Android开发 几个常用工具类
本文出自【张鸿洋的博客】并 做了部分修改。
转载请标明出处:http://blog.csdn.net/lmj623565791/article/details/38965311
打开大家手上的项目,基本都会有一大批的辅助类,今天特此整理出10个基本每个项目中都会使用的工具类,用于快速开发~~
在此感谢群里给我发项目中工具类的兄弟/姐妹~
1、日志工具类L.java
- package com.zhy.utils;
- import android.util.Log;
- /**
- * Log统一管理类
- *
- *
- *
- */
- public class L
- {
- private L()
- {
- /* cannot be instantiated */
- throw new UnsupportedOperationException("cannot be instantiated");
- }
- public static boolean isDebug = true;// 是否需要打印bug,可以在application的onCreate函数里面初始化
- private static final String TAG = "way";
- // 下面四个是默认tag的函数
- public static void i(String msg)
- {
- if (isDebug)
- Log.i(TAG, msg);
- }
- public static void d(String msg)
- {
- if (isDebug)
- Log.d(TAG, msg);
- }
- public static void e(String msg)
- {
- if (isDebug)
- Log.e(TAG, msg);
- }
- public static void v(String msg)
- {
- if (isDebug)
- Log.v(TAG, msg);
- }
- // 下面是传入自定义tag的函数
- public static void i(String tag, String msg)
- {
- if (isDebug)
- Log.i(tag, msg);
- }
- public static void d(String tag, String msg)
- {
- if (isDebug)
- Log.i(tag, msg);
- }
- public static void e(String tag, String msg)
- {
- if (isDebug)
- Log.i(tag, msg);
- }
- public static void v(String tag, String msg)
- {
- if (isDebug)
- Log.i(tag, msg);
- }
- }
网上看到的类,注释上应该原创作者的名字,很简单的一个类;网上也有很多提供把日志记录到SDCard上的,不过我是从来没记录过,所以引入个最简单的,大家可以进行评价是否需要扩充~~
2、Toast统一管理类
- package com.zhy.utils;
- import android.content.Context;
- import android.widget.Toast;
- /**
- * Toast统一管理类
- *
- */
- public class T
- {
- private T()
- {
- /* cannot be instantiated */
- throw new UnsupportedOperationException("cannot be instantiated");
- }
- public static boolean isShow = true;
- /**
- * 短时间显示Toast
- *
- * @param context
- * @param message
- */
- public static void showShort(Context context, CharSequence message)
- {
- if (isShow)
- Toast.makeText(context, message, Toast.LENGTH_SHORT).show();
- }
- /**
- * 短时间显示Toast
- *
- * @param context
- * @param message
- */
- public static void showShort(Context context, int message)
- {
- if (isShow)
- Toast.makeText(context, message, Toast.LENGTH_SHORT).show();
- }
- /**
- * 长时间显示Toast
- *
- * @param context
- * @param message
- */
- public static void showLong(Context context, CharSequence message)
- {
- if (isShow)
- Toast.makeText(context, message, Toast.LENGTH_LONG).show();
- }
- /**
- * 长时间显示Toast
- *
- * @param context
- * @param message
- */
- public static void showLong(Context context, int message)
- {
- if (isShow)
- Toast.makeText(context, message, Toast.LENGTH_LONG).show();
- }
- /**
- * 自定义显示Toast时间
- *
- * @param context
- * @param message
- * @param duration
- */
- public static void show(Context context, CharSequence message, int duration)
- {
- if (isShow)
- Toast.makeText(context, message, duration).show();
- }
- /**
- * 自定义显示Toast时间
- *
- * @param context
- * @param message
- * @param duration
- */
- public static void show(Context context, int message, int duration)
- {
- if (isShow)
- Toast.makeText(context, message, duration).show();
- }
- }
也是非常简单的一个封装,能省则省了~~
3、SharedPreferences封装类SPUtils
- package com.zhy.utils;
- import java.lang.reflect.InvocationTargetException;
- import java.lang.reflect.Method;
- import java.util.Map;
- import android.content.Context;
- import android.content.SharedPreferences;
- public class SPUtils
- {
- /**
- * 保存在手机里面的文件名
- */
- public static final String FILE_NAME = "share_data";
- /**
- * 保存数据的方法,我们需要拿到保存数据的具体类型,然后根据类型调用不同的保存方法
- *
- * @param context
- * @param key
- * @param object
- */
- public static void put(Context context, String key, Object object)
- {
- SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
- Context.MODE_PRIVATE);
- SharedPreferences.Editor editor = sp.edit();
- if (object instanceof String)
- {
- editor.putString(key, (String) object);
- } else if (object instanceof Integer)
- {
- editor.putInt(key, (Integer) object);
- } else if (object instanceof Boolean)
- {
- editor.putBoolean(key, (Boolean) object);
- } else if (object instanceof Float)
- {
- editor.putFloat(key, (Float) object);
- } else if (object instanceof Long)
- {
- editor.putLong(key, (Long) object);
- } else
- {
- editor.putString(key, object.toString());
- }
- SharedPreferencesCompat.apply(editor);
- }
- /**
- * 得到保存数据的方法,我们根据默认值得到保存的数据的具体类型,然后调用相对于的方法获取值
- *
- * @param context
- * @param key
- * @param defaultObject
- * @return
- */
- public static Object get(Context context, String key, Object defaultObject)
- {
- SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
- Context.MODE_PRIVATE);
- if (defaultObject instanceof String)
- {
- return sp.getString(key, (String) defaultObject);
- } else if (defaultObject instanceof Integer)
- {
- return sp.getInt(key, (Integer) defaultObject);
- } else if (defaultObject instanceof Boolean)
- {
- return sp.getBoolean(key, (Boolean) defaultObject);
- } else if (defaultObject instanceof Float)
- {
- return sp.getFloat(key, (Float) defaultObject);
- } else if (defaultObject instanceof Long)
- {
- return sp.getLong(key, (Long) defaultObject);
- }
- return null;
- }
- /**
- * 移除某个key值已经对应的值
- * @param context
- * @param key
- */
- public static void remove(Context context, String key)
- {
- SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
- Context.MODE_PRIVATE);
- SharedPreferences.Editor editor = sp.edit();
- editor.remove(key);
- SharedPreferencesCompat.apply(editor);
- }
- /**
- * 清除所有数据
- * @param context
- */
- public static void clear(Context context)
- {
- SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
- Context.MODE_PRIVATE);
- SharedPreferences.Editor editor = sp.edit();
- editor.clear();
- SharedPreferencesCompat.apply(editor);
- }
- /**
- * 查询某个key是否已经存在
- * @param context
- * @param key
- * @return
- */
- public static boolean contains(Context context, String key)
- {
- SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
- Context.MODE_PRIVATE);
- return sp.contains(key);
- }
- /**
- * 返回所有的键值对
- *
- * @param context
- * @return
- */
- public static Map<String, ?> getAll(Context context)
- {
- SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
- Context.MODE_PRIVATE);
- return sp.getAll();
- }
- /**
- * 创建一个解决SharedPreferencesCompat.apply方法的一个兼容类
- *
- * @author zhy
- *
- */
- private static class SharedPreferencesCompat
- {
- private static final Method sApplyMethod = findApplyMethod();
- /**
- * 反射查找apply的方法
- *
- * @return
- */
- @SuppressWarnings({ "unchecked", "rawtypes" })
- private static Method findApplyMethod()
- {
- try
- {
- Class clz = SharedPreferences.Editor.class;
- return clz.getMethod("apply");
- } catch (NoSuchMethodException e)
- {
- }
- return null;
- }
- /**
- * 如果找到则使用apply执行,否则使用commit
- *
- * @param editor
- */
- public static void apply(SharedPreferences.Editor editor)
- {
- try
- {
- if (sApplyMethod != null)
- {
- sApplyMethod.invoke(editor);
- return;
- }
- } catch (IllegalArgumentException e)
- {
- } catch (IllegalAccessException e)
- {
- } catch (InvocationTargetException e)
- {
- }
- editor.commit();
- }
- }
- }
对SharedPreference的使用做了建议的封装,对外公布出put,get,remove,clear等等方法;
注意一点,里面所有的commit操作使用了SharedPreferencesCompat.apply进行了替代,目的是尽可能的使用apply代替commit
首先说下为什么,因为commit方法是同步的,并且我们很多时候的commit操作都是UI线程中,毕竟是IO操作,尽可能异步;
所以我们使用apply进行替代,apply异步的进行写入;
但是apply相当于commit来说是new API呢,为了更好的兼容,我们做了适配;
SharedPreferencesCompat也可以给大家创建兼容类提供了一定的参考~~
4、单位转换类 DensityUtils
- package com.zhy.utils;
- import android.content.Context;
- import android.util.TypedValue;
- /**
- * 常用单位转换的辅助类
- *
- *
- *
- */
- public class DensityUtils
- {
- private DensityUtils()
- {
- /* cannot be instantiated */
- throw new UnsupportedOperationException("cannot be instantiated");
- }
- /**
- * dp转px
- *
- * @param context
- * @param val
- * @return
- */
- public static int dp2px(Context context, float dpVal)
- {
- return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
- dpVal, context.getResources().getDisplayMetrics());
- }
- /**
- * sp转px
- *
- * @param context
- * @param val
- * @return
- */
- public static int sp2px(Context context, float spVal)
- {
- return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP,
- spVal, context.getResources().getDisplayMetrics());
- }
- /**
- * px转dp
- *
- * @param context
- * @param pxVal
- * @return
- */
- public static float px2dp(Context context, float pxVal)
- {
- final float scale = context.getResources().getDisplayMetrics().density;
- return (pxVal / scale);
- }
- /**
- * px转sp
- *
- * @param fontScale
- * @param pxVal
- * @return
- */
- public static float px2sp(Context context, float pxVal)
- {
- return (pxVal / context.getResources().getDisplayMetrics().scaledDensity);
- }
- }
5、SD卡相关辅助类 SDCardUtils
- package com.zhy.utils;
- import java.io.File;
- import android.os.Environment;
- import android.os.StatFs;
- /**
- * SD卡相关的辅助类
- *
- *
- *
- */
- public class SDCardUtils
- {
- private SDCardUtils()
- {
- /* cannot be instantiated */
- throw new UnsupportedOperationException("cannot be instantiated");
- }
- /**
- * 判断SDCard是否可用
- *
- * @return
- */
- public static boolean isSDCardEnable()
- {
- return Environment.getExternalStorageState().equals(
- Environment.MEDIA_MOUNTED);
- }
- /**
- * 获取SD卡路径
- *
- * @return
- */
- public static String getSDCardPath()
- {
- return Environment.getExternalStorageDirectory().getAbsolutePath()
- + File.separator;
- }
- /**
- * 获取SD卡的剩余容量 单位byte
- *
- * @return
- */
- public static long getSDCardAllSize()
- {
- if (isSDCardEnable())
- {
- StatFs stat = new StatFs(getSDCardPath());
- // 获取空闲的数据块的数量
- long availableBlocks = (long) stat.getAvailableBlocks() - 4;
- // 获取单个数据块的大小(byte)
- long freeBlocks = stat.getAvailableBlocks();
- return freeBlocks * availableBlocks;
- }
- return 0;
- }
- /**
- * 获取指定路径所在空间的剩余可用容量字节数,单位byte
- *
- * @param filePath
- * @return 容量字节 SDCard可用空间,内部存储可用空间
- */
- public static long getFreeBytes(String filePath)
- {
- // 如果是sd卡的下的路径,则获取sd卡可用容量
- if (filePath.startsWith(getSDCardPath()))
- {
- filePath = getSDCardPath();
- } else
- {// 如果是内部存储的路径,则获取内存存储的可用容量
- filePath = Environment.getDataDirectory().getAbsolutePath();
- }
- StatFs stat = new StatFs(filePath);
- long availableBlocks = (long) stat.getAvailableBlocks() - 4;
- return stat.getBlockSize() * availableBlocks;
- }
- /**
- * 获取系统存储路径
- *
- * @return
- */
- public static String getRootDirectoryPath()
- {
- return Environment.getRootDirectory().getAbsolutePath();
- }
- }
6、屏幕相关辅助类 ScreenUtils
- package com.zhy.utils;
- import android.app.Activity;
- import android.content.Context;
- import android.graphics.Bitmap;
- import android.graphics.Rect;
- import android.util.DisplayMetrics;
- import android.view.View;
- import android.view.WindowManager;
- /**
- * 获得屏幕相关的辅助类
- *
- *
- *
- */
- public class ScreenUtils
- {
- private ScreenUtils()
- {
- /* cannot be instantiated */
- throw new UnsupportedOperationException("cannot be instantiated");
- }
- /**
- * 获得屏幕高度
- *
- * @param context
- * @return
- */
- public static int getScreenWidth(Context context)
- {
- WindowManager wm = (WindowManager) context
- .getSystemService(Context.WINDOW_SERVICE);
- DisplayMetrics outMetrics = new DisplayMetrics();
- wm.getDefaultDisplay().getMetrics(outMetrics);
- return outMetrics.widthPixels;
- }
- /**
- * 获得屏幕宽度
- *
- * @param context
- * @return
- */
- public static int getScreenHeight(Context context)
- {
- WindowManager wm = (WindowManager) context
- .getSystemService(Context.WINDOW_SERVICE);
- DisplayMetrics outMetrics = new DisplayMetrics();
- wm.getDefaultDisplay().getMetrics(outMetrics);
- return outMetrics.heightPixels;
- }
- /**
- * 获得状态栏的高度
- *
- * @param context
- * @return
- */
- public static int getStatusHeight(Context context)
- {
- int statusHeight = -1;
- try
- {
- Class<?> clazz = Class.forName("com.android.internal.R$dimen");
- Object object = clazz.newInstance();
- int height = Integer.parseInt(clazz.getField("status_bar_height")
- .get(object).toString());
- statusHeight = context.getResources().getDimensionPixelSize(height);
- } catch (Exception e)
- {
- e.printStackTrace();
- }
- return statusHeight;
- }
- /**
- * 获取当前屏幕截图,包含状态栏
- *
- * @param activity
- * @return
- */
- public static Bitmap snapShotWithStatusBar(Activity activity)
- {
- View view = activity.getWindow().getDecorView();
- view.setDrawingCacheEnabled(true);
- view.buildDrawingCache();
- Bitmap bmp = view.getDrawingCache();
- int width = getScreenWidth(activity);
- int height = getScreenHeight(activity);
- Bitmap bp = null;
- bp = Bitmap.createBitmap(bmp, 0, 0, width, height);
- view.destroyDrawingCache();
- return bp;
- }
- /**
- * 获取当前屏幕截图,不包含状态栏
- *
- * @param activity
- * @return
- */
- public static Bitmap snapShotWithoutStatusBar(Activity activity)
- {
- View view = activity.getWindow().getDecorView();
- view.setDrawingCacheEnabled(true);
- view.buildDrawingCache();
- Bitmap bmp = view.getDrawingCache();
- Rect frame = new Rect();
- activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
- int statusBarHeight = frame.top;
- int width = getScreenWidth(activity);
- int height = getScreenHeight(activity);
- Bitmap bp = null;
- bp = Bitmap.createBitmap(bmp, 0, statusBarHeight, width, height
- - statusBarHeight);
- view.destroyDrawingCache();
- return bp;
- }
- }
7、App相关辅助类
- package com.zhy.utils;
- import android.content.Context;
- import android.content.pm.PackageInfo;
- import android.content.pm.PackageManager;
- import android.content.pm.PackageManager.NameNotFoundException;
- /**
- * 跟App相关的辅助类
- *
- *
- *
- */
- public class AppUtils
- {
- private AppUtils()
- {
- /* cannot be instantiated */
- throw new UnsupportedOperationException("cannot be instantiated");
- }
- /**
- * 获取应用程序名称
- */
- public static String getAppName(Context context)
- {
- try
- {
- PackageManager packageManager = context.getPackageManager();
- PackageInfo packageInfo = packageManager.getPackageInfo(
- context.getPackageName(), 0);
- int labelRes = packageInfo.applicationInfo.labelRes;
- return context.getResources().getString(labelRes);
- } catch (NameNotFoundException e)
- {
- e.printStackTrace();
- }
- return null;
- }
- /**
- * [获取应用程序版本名称信息]
- *
- * @param context
- * @return 当前应用的版本名称
- */
- public static String getVersionName(Context context)
- {
- try
- {
- PackageManager packageManager = context.getPackageManager();
- PackageInfo packageInfo = packageManager.getPackageInfo(
- context.getPackageName(), 0);
- return packageInfo.versionName;
- } catch (NameNotFoundException e)
- {
- e.printStackTrace();
- }
- return null;
- }
- }
8、软键盘相关辅助类KeyBoardUtils
- package com.zhy.utils;
- import android.content.Context;
- import android.view.inputmethod.InputMethodManager;
- import android.widget.EditText;
- /**
- * 打开或关闭软键盘
- *
- * @author zhy
- *
- */
- public class KeyBoardUtils
- {
- /**
- * 打卡软键盘
- *
- * @param mEditText
- * 输入框
- * @param mContext
- * 上下文
- */
- public static void openKeybord(EditText mEditText, Context mContext)
- {
- InputMethodManager imm = (InputMethodManager) mContext
- .getSystemService(Context.INPUT_METHOD_SERVICE);
- imm.showSoftInput(mEditText, InputMethodManager.RESULT_SHOWN);
- imm.toggleSoftInput(InputMethodManager.SHOW_FORCED,
- InputMethodManager.HIDE_IMPLICIT_ONLY);
- }
- /**
- * 关闭软键盘
- *
- * @param mEditText
- * 输入框
- * @param mContext
- * 上下文
- */
- public static void closeKeybord(EditText mEditText, Context mContext)
- {
- InputMethodManager imm = (InputMethodManager) mContext
- .getSystemService(Context.INPUT_METHOD_SERVICE);
- imm.hideSoftInputFromWindow(mEditText.getWindowToken(), 0);
- }
- }
9、网络相关辅助类 NetUtils
- package com.zhy.utils;
- import android.app.Activity;
- import android.content.ComponentName;
- import android.content.Context;
- import android.content.Intent;
- import android.net.ConnectivityManager;
- import android.net.NetworkInfo;
- /**
- * 跟网络相关的工具类
- *
- *
- *
- */
- public class NetUtils
- {
- private NetUtils()
- {
- /* cannot be instantiated */
- throw new UnsupportedOperationException("cannot be instantiated");
- }
- /**
- * 判断网络是否连接
- *
- * @param context
- * @return
- */
- public static boolean isConnected(Context context)
- {
- ConnectivityManager connectivity = (ConnectivityManager) context
- .getSystemService(Context.CONNECTIVITY_SERVICE);
- if (null != connectivity)
- {
- NetworkInfo info = connectivity.getActiveNetworkInfo();
- if (null != info && info.isConnected())
- {
- if (info.getState() == NetworkInfo.State.CONNECTED)
- {
- return true;
- }
- }
- }
- return false;
- }
- /**
- * 判断是否是wifi连接
- */
- public static boolean isWifi(Context context)
- {
- ConnectivityManager cm = (ConnectivityManager) context
- .getSystemService(Context.CONNECTIVITY_SERVICE);
- if (cm == null)
- return false;
- return cm.getActiveNetworkInfo().getType() == ConnectivityManager.TYPE_WIFI;
- }
- /**
- * 打开网络设置界面
- */
- public static void openSetting(Activity activity)
- {
- Intent intent = new Intent("/");
- ComponentName cm = new ComponentName("com.android.settings",
- "com.android.settings.WirelessSettings");
- intent.setComponent(cm);
- intent.setAction("android.intent.action.VIEW");
- activity.startActivityForResult(intent, 0);
- }
- }
10、Http相关辅助类 HttpUtils
- package com.zhy.utils;
- import java.io.BufferedReader;
- import java.io.ByteArrayOutputStream;
- import java.io.IOException;
- import java.io.InputStream;
- import java.io.InputStreamReader;
- import java.io.PrintWriter;
- import java.net.HttpURLConnection;
- import java.net.URL;
- /**
- * Http请求的工具类
- *
- * @author zhy
- *
- */
- public class HttpUtils
- {
- private static final int TIMEOUT_IN_MILLIONS = 5000;
- public interface CallBack
- {
- void onRequestComplete(String result);
- }
- /**
- * 异步的Get请求
- *
- * @param urlStr
- * @param callBack
- */
- public static void doGetAsyn(final String urlStr, final CallBack callBack)
- {
- new Thread()
- {
- public void run()
- {
- try
- {
- String result = doGet(urlStr);
- if (callBack != null)
- {
- callBack.onRequestComplete(result);
- }
- } catch (Exception e)
- {
- e.printStackTrace();
- }
- };
- }.start();
- }
- /**
- * 异步的Post请求
- * @param urlStr
- * @param params
- * @param callBack
- * @throws Exception
- */
- public static void doPostAsyn(final String urlStr, final String params,
- final CallBack callBack) throws Exception
- {
- new Thread()
- {
- public void run()
- {
- try
- {
- String result = doPost(urlStr, params);
- if (callBack != null)
- {
- callBack.onRequestComplete(result);
- }
- } catch (Exception e)
- {
- e.printStackTrace();
- }
- };
- }.start();
- }
- /**
- * Get请求,获得返回数据
- *
- * @param urlStr
- * @return
- * @throws Exception
- */
- public static String doGet(String urlStr)
- {
- URL url = null;
- HttpURLConnection conn = null;
- InputStream is = null;
- ByteArrayOutputStream baos = null;
- try
- {
- url = new URL(urlStr);
- conn = (HttpURLConnection) url.openConnection();
- conn.setReadTimeout(TIMEOUT_IN_MILLIONS);
- conn.setConnectTimeout(TIMEOUT_IN_MILLIONS);
- conn.setRequestMethod("GET");
- conn.setRequestProperty("accept", "*/*");
- conn.setRequestProperty("connection", "Keep-Alive");
- if (conn.getResponseCode() == 200)
- {
- is = conn.getInputStream();
- baos = new ByteArrayOutputStream();
- int len = -1;
- byte[] buf = new byte[128];
- while ((len = is.read(buf)) != -1)
- {
- baos.write(buf, 0, len);
- }
- baos.flush();
- return baos.toString();
- } else
- {
- throw new RuntimeException(" responseCode is not 200 ... ");
- }
- } catch (Exception e)
- {
- e.printStackTrace();
- } finally
- {
- try
- {
- if (is != null)
- is.close();
- } catch (IOException e)
- {
- }
- try
- {
- if (baos != null)
- baos.close();
- } catch (IOException e)
- {
- }
- conn.disconnect();
- }
- return null ;
- }
- /**
- * 向指定 URL 发送POST方法的请求
- *
- * @param url
- * 发送请求的 URL
- * @param param
- * 请求参数,请求参数应该是 name1=value1&name2=value2 的形式。
- * @return 所代表远程资源的响应结果
- * @throws Exception
- */
- public static String doPost(String url, String param)
- {
- PrintWriter out = null;
- BufferedReader in = null;
- String result = "";
- try
- {
- URL realUrl = new URL(url);
- // 打开和URL之间的连接
- HttpURLConnection conn = (HttpURLConnection) realUrl
- .openConnection();
- // 设置通用的请求属性
- conn.setRequestProperty("accept", "*/*");
- conn.setRequestProperty("connection", "Keep-Alive");
- conn.setRequestMethod("POST");
- conn.setRequestProperty("Content-Type",
- "application/x-www-form-urlencoded");
- conn.setRequestProperty("charset", "utf-8");
- conn.setUseCaches(false);
- // 发送POST请求必须设置如下两行
- conn.setDoOutput(true);
- conn.setDoInput(true);
- conn.setReadTimeout(TIMEOUT_IN_MILLIONS);
- conn.setConnectTimeout(TIMEOUT_IN_MILLIONS);
- if (param != null && !param.trim().equals(""))
- {
- // 获取URLConnection对象对应的输出流
- out = new PrintWriter(conn.getOutputStream());
- // 发送请求参数
- out.print(param);
- // flush输出流的缓冲
- out.flush();
- }
- // 定义BufferedReader输入流来读取URL的响应
- in = new BufferedReader(
- new InputStreamReader(conn.getInputStream()));
- String line;
- while ((line = in.readLine()) != null)
- {
- result += line;
- }
- } catch (Exception e)
- {
- e.printStackTrace();
- }
- // 使用finally块来关闭输出流、输入流
- finally
- {
- try
- {
- if (out != null)
- {
- out.close();
- }
- if (in != null)
- {
- in.close();
- }
- } catch (IOException ex)
- {
- ex.printStackTrace();
- }
- }
- return result;
- }
- }
如果大家在使用过程中出现什么错误,或者有更好的建议,欢迎大家留言提出~~可以不断的改进这些类~
源码点击下载
11. Android 进度提示圆圈
protected AlertDialog mProgressDialog;public void showDialog(){mProgressDialog = createProgressDialog(this);if((mProgressDialog != null) && !mProgressDialog.isShowing()){try{mProgressDialog.show();LayoutInflater inflater = LayoutInflater.from(this);View v = inflater.inflate(R.layout.xct_lthj_layout_dialog_progressbar,null);Window window = mProgressDialog.getWindow();WindowManager.LayoutParams lp = window.getAttributes();// 设置透明度为0.3lp.alpha = 1.0f;// 设置暗色度lp.dimAmount = 0.0f;lp.gravity = Gravity.CENTER;window.setAttributes(lp);window.setContentView(v);mProgressDialog.setOnKeyListener(MyKeyListener);}catch(BadTokenException e){// TODO check WHY!e.printStackTrace();}} }public OnKeyListener MyKeyListener = new OnKeyListener() {@Overridepublic boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {if (keyCode == KeyEvent.KEYCODE_SEARCH) {return true;}return false;}};protected AlertDialog createProgressDialog(Context pContext) {AlertDialog.Builder builder = new AlertDialog.Builder(pContext);final AlertDialog progressDialog = builder.create();progressDialog.setCanceledOnTouchOutside(false);return progressDialog;}public void closeDialog(){if(mProgressDialog != null && mProgressDialog.isShowing()){mProgressDialog.dismiss();}}
12、Toast工具类2
package com.zftlive.android.tools;import android.content.Context;
import android.graphics.Color;
import android.graphics.drawable.GradientDrawable;
import android.os.Handler;
import android.util.TypedValue;
import android.view.Gravity;
import android.widget.LinearLayout;
import android.widget.LinearLayout.LayoutParams;
import android.widget.TextView;
import android.widget.Toast;import com.zftlive.android.MApplication;/*** 自定义Toast控件* @author 曾繁添* @version 1.0*/
public class ToolToast {private static Toast mToast;private static Handler mHandler = new Handler();private static Runnable r = new Runnable() {public void run() {mToast.cancel();}}; /*** 弹出较长时间提示信息* @param context 上下文对象* @param msg 要显示的信息*/public static void showLong(Context context, String msg){buildToast(context,msg,Toast.LENGTH_LONG).show();}/*** 弹出较长时间提示信息* @param msg 要显示的信息*/public static void showLong(String msg){buildToast(MApplication.gainContext(),msg,Toast.LENGTH_LONG).show();}/*** 弹出较短时间提示信息* @param context 上下文对象* @param msg 要显示的信息*/public static void showShort(Context context, String msg){buildToast(context,msg,Toast.LENGTH_SHORT).show();}/*** 弹出较短时间提示信息* @param msg 要显示的信息*/public static void showShort(String msg){buildToast(MApplication.gainContext(),msg,Toast.LENGTH_SHORT).show();}/*** 构造Toast* @param context 上下文* @return*/private static Toast buildToast(Context context,String msg,int duration){return buildToast(context,msg,duration,"#000000",16);}/*** 构造Toast* @param context 上下文* @param msg 消息* @param duration 显示时间* @param bgColor 背景颜色* @return*/public static Toast buildToast(Context context,String msg,int duration,String bgColor){return buildToast(context,msg,duration,bgColor,16);}/*** 构造Toast* @param context 上下文* @param msg 消息* @param duration 显示时间* @param bgColor 背景颜色* @param textSp 文字大小* @return*/public static Toast buildToast(Context context,String msg,int duration,String bgColor,int textSp){return buildToast(context,msg,duration,bgColor,textSp,10);}/*** 构造Toast* @param context 上下文* @param msg 消息* @param duration 显示时间* @param bgColor 背景颜色* @param textSp 文字大小* @param cornerRadius 四边圆角弧度* @return*/public static Toast buildToast(Context context,String msg,int duration,String bgColor,int textSp,int cornerRadius){mHandler.removeCallbacks(r);if(null == mToast){//构建ToastmToast = Toast.makeText(context, null, duration);mToast.setGravity(Gravity.CENTER, 0, 0);//取消toastmHandler.postDelayed(r, duration);}//设置Toast文字TextView tv = new TextView(context);int dpPadding = ToolUnit.dipTopx(10);tv.setPadding(dpPadding, dpPadding, dpPadding, dpPadding);tv.setGravity(Gravity.CENTER);tv.setText(msg);tv.setTextColor(Color.WHITE);tv.setTextSize(TypedValue.COMPLEX_UNIT_SP, textSp);//Toast文字TextView容器LinearLayout mLayout = new LinearLayout(context);GradientDrawable shape = new GradientDrawable();shape.setColor(Color.parseColor(bgColor));shape.setCornerRadius(cornerRadius);shape.setStroke(1, Color.parseColor(bgColor));shape.setAlpha(180);mLayout.setBackground(shape);mLayout.setOrientation(LinearLayout.VERTICAL);LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.WRAP_CONTENT); //设置layout_gravityparams.gravity = Gravity.CENTER; mLayout.setLayoutParams(params);//设置gravitymLayout.setGravity(Gravity.CENTER);mLayout.addView(tv);//将自定义View覆盖Toast的ViewmToast.setView(mLayout);return mToast;}
}
13、图片工具类
package com.zftlive.android.tools;import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Hashtable;
import java.util.Random;import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.ColorMatrix;
import android.graphics.ColorMatrixColorFilter;
import android.graphics.LinearGradient;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.PixelFormat;
import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Shader.TileMode;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.NinePatchDrawable;
import android.media.ExifInterface;
import android.view.View;import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.QRCodeWriter;
import com.zftlive.android.config.SysEnv;/*** 图片工具类* @author 曾繁添* @version 1.0*/
public class ToolPicture {/*** 截取应用程序界面(去除状态栏)* @param activity 界面Activity* @return Bitmap对象*/public static Bitmap takeScreenShot(Activity activity){ View view =activity.getWindow().getDecorView(); view.setDrawingCacheEnabled(true); view.buildDrawingCache(); Bitmap bitmap = view.getDrawingCache(); Rect rect = new Rect(); activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(rect); int statusBarHeight = rect.top; /*** *WindowManager windowMgr = (WindowManager)context.getSystemService(Context.WINDOW_SERVICE);windowMgr.getDefaultDisplay().getMetrics(mDisplayMetrics);return mDisplayMetrics;*/Bitmap bitmap2 = Bitmap.createBitmap(bitmap,0,statusBarHeight, SysEnv.SCREEN_WIDTH, SysEnv.SCREEN_HEIGHT - statusBarHeight); view.destroyDrawingCache(); return bitmap2; }/*** 截取应用程序界面* @param activity 界面Activity* @return Bitmap对象*/public static Bitmap takeFullScreenShot(Activity activity){ activity.getWindow().getDecorView().setDrawingCacheEnabled(true);Bitmap bmp = activity.getWindow().getDecorView().getDrawingCache();View view = activity.getWindow().getDecorView();Bitmap bmp2 = Bitmap.createBitmap(480, 800, Bitmap.Config.ARGB_8888);//view.draw(new Canvas(bmp2));//bmp就是截取的图片了,可通过bmp.compress(CompressFormat.PNG, 100, new FileOutputStream(file));把图片保存为文件。//1、得到状态栏高度Rect rect = new Rect();view.getWindowVisibleDisplayFrame(rect);int statusBarHeight = rect.top;System.out.println("状态栏高度:" + statusBarHeight);//2、得到标题栏高度int wintop = activity.getWindow().findViewById(android.R.id.content).getTop();int titleBarHeight = wintop - statusBarHeight;System.out.println("标题栏高度:" + titleBarHeight);// //把两个bitmap合到一起
// Bitmap bmpall=Biatmap.createBitmap(width,height,Config.ARGB_8888);
// Canvas canvas=new Canvas(bmpall);
// canvas.drawBitmap(bmp1,x,y,paint);
// canvas.drawBitmap(bmp2,x,y,paint);return bmp; }/*** 根据指定内容生成自定义宽高的二维码图片 * @param content 需要生成二维码的内容* @param width 二维码宽度* @param height 二维码高度* @throws WriterException 生成二维码异常*/public static Bitmap makeQRImage(String content, int width, int height)throws WriterException {// 判断URL合法性if (!ToolString.isNoBlankAndNoNull(content))return null;Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");// 图像数据转换,使用了矩阵转换BitMatrix bitMatrix = new QRCodeWriter().encode(content,BarcodeFormat.QR_CODE, width, height, hints);int[] pixels = new int[width * height];// 按照二维码的算法,逐个生成二维码的图片,两个for循环是图片横列扫描的结果for (int y = 0; y < height; y++) {for (int x = 0; x < width; x++) {if (bitMatrix.get(x, y))pixels[y * width + x] = 0xff000000;elsepixels[y * width + x] = 0xffffffff;}}// 生成二维码图片的格式,使用ARGB_8888Bitmap bitmap = Bitmap.createBitmap(width, height,Bitmap.Config.ARGB_8888);bitmap.setPixels(pixels, 0, width, 0, 0, width, height);return bitmap;}/*** 读取图片属性:旋转的角度* * @param path 图片绝对路径* @return degree 旋转的角度* @throws IOException*/public static int gainPictureDegree(String path) throws Exception {int degree = 0;try {ExifInterface exifInterface = new ExifInterface(path);int orientation = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION,ExifInterface.ORIENTATION_NORMAL);switch (orientation) {case ExifInterface.ORIENTATION_ROTATE_90:degree = 90;break;case ExifInterface.ORIENTATION_ROTATE_180:degree = 180;break;case ExifInterface.ORIENTATION_ROTATE_270:degree = 270;break;}} catch (Exception e) {throw(e);}return degree;}/*** 旋转图片 * @param angle 角度* @param bitmap 源bitmap* @return Bitmap 旋转角度之后的bitmap*/ public static Bitmap rotaingBitmap(int angle,Bitmap bitmap) { //旋转图片 动作 Matrix matrix = new Matrix();; matrix.postRotate(angle); //重新构建BitmapBitmap resizedBitmap = Bitmap.createBitmap(bitmap,0,0,bitmap.getWidth(),bitmap.getHeight(),matrix, true); return resizedBitmap; }/*** Drawable转成Bitmap * @param drawable* @return*/public static Bitmap drawableToBitmap(Drawable drawable) {if (drawable instanceof BitmapDrawable) {return ((BitmapDrawable) drawable).getBitmap();} else if (drawable instanceof NinePatchDrawable) {Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(),drawable.getIntrinsicHeight(),drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888: Bitmap.Config.RGB_565);Canvas canvas = new Canvas(bitmap);drawable.setBounds(0, 0, drawable.getIntrinsicWidth(),drawable.getIntrinsicHeight());drawable.draw(canvas);return bitmap;} else {return null;}}/*** 从资源文件中获取图片* @param context 上下文* @param drawableId 资源文件id* @return*/public static Bitmap gainBitmap(Context context,int drawableId){Bitmap bmp = BitmapFactory.decodeResource(context.getResources(), drawableId);return bmp;}/*** 灰白图片(去色)* @param bitmap 需要灰度的图片* @return 去色之后的图片*/public static Bitmap toBlack(Bitmap bitmap) {Bitmap resultBMP = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(),Bitmap.Config.RGB_565);Canvas c = new Canvas(resultBMP);Paint paint = new Paint();ColorMatrix cm = new ColorMatrix();cm.setSaturation(0);ColorMatrixColorFilter f = new ColorMatrixColorFilter(cm);paint.setColorFilter(f);c.drawBitmap(bitmap, 0, 0, paint);return resultBMP;}/*** 将bitmap转成 byte数组* * @param bitmap* @return*/public static byte[] toBtyeArray(Bitmap bitmap) {ByteArrayOutputStream baos = new ByteArrayOutputStream();bitmap.compress(Bitmap.CompressFormat.PNG, 100, baos);return baos.toByteArray();}/*** 将byte数组转成 bitmap* * @param b* @return*/public static Bitmap bytesToBimap(byte[] b) {if (b.length != 0) {return BitmapFactory.decodeByteArray(b, 0, b.length);} else {return null;}}/*** 将Bitmap转换成指定大小* * @param bitmap 需要改变大小的图片* @param width 宽* @param height 高* @return*/public static Bitmap createBitmapBySize(Bitmap bitmap, int width, int height) {return Bitmap.createScaledBitmap(bitmap, width, height, true);}/*** 在图片右下角添加水印* @param srcBMP 原图* @param markBMP 水印图片* @return 合成水印后的图片*/public static Bitmap composeWatermark(Bitmap srcBMP, Bitmap markBMP) {if (srcBMP == null) {return null;}// 创建一个新的和SRC长度宽度一样的位图Bitmap newb = Bitmap.createBitmap(srcBMP.getWidth(), srcBMP.getHeight(), Config.ARGB_8888);Canvas cv = new Canvas(newb);// 在 0,0坐标开始画入原图cv.drawBitmap(srcBMP, 0, 0, null);// 在原图的右下角画入水印cv.drawBitmap(markBMP, srcBMP.getWidth() - markBMP.getWidth() + 5, srcBMP.getHeight() - markBMP.getHeight() + 5, null);// 保存cv.save(Canvas.ALL_SAVE_FLAG);// 存储cv.restore();return newb;}/*** 将图片转成指定弧度(角度)的图片* * @param bitmap 需要修改的图片* @param pixels 圆角的弧度* @return 圆角图片*/public static Bitmap toRoundCorner(Bitmap bitmap, int pixels) {Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888);//根据图片创建画布Canvas canvas = new Canvas(output);final Paint paint = new Paint();final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());final RectF rectF = new RectF(rect);final float roundPx = pixels;paint.setAntiAlias(true);canvas.drawARGB(0, 0, 0, 0);paint.setColor(0xff424242);canvas.drawRoundRect(rectF, roundPx, roundPx, paint);paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));canvas.drawBitmap(bitmap, rect, rect, paint);return output;}/*** 缩放图片* * @param bmp 需要缩放的图片源* @param newW 需要缩放成的图片宽度* @param newH 需要缩放成的图片高度* @return 缩放后的图片*/public static Bitmap zoom(Bitmap bmp, int newW, int newH) {// 获得图片的宽高int width = bmp.getWidth();int height = bmp.getHeight();// 计算缩放比例float scaleWidth = ((float) newW) / width;float scaleHeight = ((float) newH) / height;// 取得想要缩放的matrix参数Matrix matrix = new Matrix();matrix.postScale(scaleWidth, scaleHeight);// 得到新的图片Bitmap newbm = Bitmap.createBitmap(bmp, 0, 0, width, height, matrix,true);return newbm;}/*** 获得倒影的图片* @param bitmap 原始图片* @return 带倒影的图片*/public static Bitmap makeReflectionImage(Bitmap bitmap){ final int reflectionGap = 4; int width = bitmap.getWidth(); int height = bitmap.getHeight(); Matrix matrix = new Matrix(); matrix.preScale(1, -1); Bitmap reflectionImage = Bitmap.createBitmap(bitmap, 0, height/2, width, height/2, matrix, false); Bitmap bitmapWithReflection = Bitmap.createBitmap(width, (height + height/2), Config.ARGB_8888); Paint deafalutPaint = new Paint(); Canvas canvas = new Canvas(bitmapWithReflection); canvas.drawBitmap(bitmap, 0, 0, null); canvas.drawRect(0, height,width,height + reflectionGap, deafalutPaint); canvas.drawBitmap(reflectionImage, 0, height + reflectionGap, null); Paint paint = new Paint(); LinearGradient shader = new LinearGradient(0,bitmap.getHeight(),0,bitmapWithReflection.getHeight()+reflectionGap,0x70ffffff,0x00ffffff,TileMode.CLAMP); paint.setShader(shader); paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN)); canvas.drawRect(0,height,width,bitmapWithReflection.getHeight()+reflectionGap,paint); return bitmapWithReflection; } /*** 获取验证码图片* @param width 验证码宽度* @param height 验证码高度* @return 验证码Bitmap对象*/public synchronized static Bitmap makeValidateCode(int width, int height){return ValidateCodeGenerator.createBitmap(width, height);}/*** 获取验证码值* @return 验证码字符串*/public synchronized static String gainValidateCodeValue(){return ValidateCodeGenerator.getCode();}/*** 随机生成验证码内部类**/final static class ValidateCodeGenerator{private static final char[] CHARS = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9','a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z','A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'};//default settingsprivate static final int DEFAULT_CODE_LENGTH = 4;private static final int DEFAULT_FONT_SIZE = 20;private static final int DEFAULT_LINE_NUMBER = 3;private static final int BASE_PADDING_LEFT = 5, RANGE_PADDING_LEFT = 10, BASE_PADDING_TOP = 15, RANGE_PADDING_TOP = 10;private static final int DEFAULT_WIDTH = 60, DEFAULT_HEIGHT = 30;//variablesprivate static String value;private static int padding_left, padding_top;private static Random random = new Random();public static Bitmap createBitmap(int width,int height) {padding_left = 0;//创建画布Bitmap bp = Bitmap.createBitmap(width, height, Config.ARGB_8888); Canvas c = new Canvas(bp);//随机生成验证码字符StringBuilder buffer = new StringBuilder();for (int i = 0; i < DEFAULT_CODE_LENGTH; i++) {buffer.append(CHARS[random.nextInt(CHARS.length)]);}value = buffer.toString();//设置颜色c.drawColor(Color.WHITE);//设置画笔大小Paint paint = new Paint();paint.setTextSize(DEFAULT_FONT_SIZE);for (int i = 0; i < value.length(); i++) {//随机样式randomTextStyle(paint);padding_left += BASE_PADDING_LEFT + random.nextInt(RANGE_PADDING_LEFT);padding_top = BASE_PADDING_TOP + random.nextInt(RANGE_PADDING_TOP);c.drawText(value.charAt(i) + "", padding_left, padding_top, paint);}for (int i = 0; i < DEFAULT_LINE_NUMBER; i++) {drawLine(c, paint);}//保存 c.save(Canvas.ALL_SAVE_FLAG);c.restore();return bp;}public static String getCode() {return value;}private static void randomTextStyle(Paint paint) {int color = randomColor(1);paint.setColor(color);paint.setFakeBoldText(random.nextBoolean());//true为粗体,false为非粗体float skewX = random.nextInt(11) / 10;skewX = random.nextBoolean() ? skewX : -skewX;paint.setTextSkewX(skewX); //float类型参数,负数表示右斜,整数左斜paint.setUnderlineText(true); //true为下划线,false为非下划线paint.setStrikeThruText(true); //true为删除线,false为非删除线}private static void drawLine(Canvas canvas, Paint paint) {int color = randomColor(1);int startX = random.nextInt(DEFAULT_WIDTH);int startY = random.nextInt(DEFAULT_HEIGHT);int stopX = random.nextInt(DEFAULT_WIDTH);int stopY = random.nextInt(DEFAULT_HEIGHT);paint.setStrokeWidth(1);paint.setColor(color);canvas.drawLine(startX, startY, stopX, stopY, paint);}private static int randomColor(int rate) {int red = random.nextInt(256) / rate;int green = random.nextInt(256) / rate;int blue = random.nextInt(256) / rate;return Color.rgb(red, green, blue);}}
}
14、Properties文件 工具类
package com.zftlive.android.tools;import java.io.InputStream;
import java.util.Properties;import android.content.Context;import com.zftlive.android.MApplication;/*** 配置文件工具类* * @author 曾繁添* @version 1.0* */
public final class ToolProperties extends Properties {private static Properties property = new Properties();public static String readAssetsProp(String fileName, String key) {String value = "";try {InputStream in = MApplication.gainContext().getAssets().open(fileName);property.load(in);value = property.getProperty(key);} catch (Exception e1) {e1.printStackTrace();}return value;}public static String readAssetsProp(Context context,String fileName, String key) {String value = "";try {InputStream in = context.getAssets().open(fileName);property.load(in);value = property.getProperty(key);} catch (Exception e1) {e1.printStackTrace();}return value;}public static String readAssetsProp(String fileName, String key,String defaultValue) {String value = "";try {InputStream in = MApplication.gainContext().getAssets().open(fileName);property.load(in);value = property.getProperty(key, defaultValue);} catch (Exception e1) {e1.printStackTrace();}return value;}public static String readAssetsProp(Context context,String fileName, String key,String defaultValue) {String value = "";try {InputStream in = context.getAssets().open(fileName);property.load(in);value = property.getProperty(key, defaultValue);} catch (Exception e1) {e1.printStackTrace();}return value;}
}
15、网络工具类2:network
package com.zftlive.android.tools;import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.provider.Settings;
import android.util.Log;/*** 基于静态内部类实现的单例,保证线程安全的网络信息工具类 <per> 使用该工具类之前,记得在AndroidManifest.xml添加权限许可 <xmp>* <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />* </xmp> </per>* * 安卓判断网络状态,只需要在相应的Activity的相关方法(onCreat/onResum)调用一行代码即可* NetWorkUtils.getInstance(getActivity()).validateNetWork();* * @author 曾繁添* @version 1.0*/
public class ToolNetwork {public final static String NETWORK_CMNET = "CMNET";public final static String NETWORK_CMWAP = "CMWAP";public final static String NETWORK_WIFI = "WIFI";public final static String TAG = "ToolNetwork";private static NetworkInfo networkInfo = null;private Context mContext = null;private ToolNetwork() {}public static ToolNetwork getInstance() {return SingletonHolder.instance;}public ToolNetwork init(Context context){this.mContext = context;return this;}/*** 判断网络是否可用* * @return 是/否*/public boolean isAvailable() {ConnectivityManager manager = (ConnectivityManager) mContext.getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE);if (null == manager) {return false;}networkInfo = manager.getActiveNetworkInfo();if (null == networkInfo || !networkInfo.isAvailable()) {return false;}return true;}/*** 判断网络是否已连接* * @return 是/否*/public boolean isConnected() {if (!isAvailable()) {return false;}if (!networkInfo.isConnected()) {return false;}return true;}/*** 检查当前环境网络是否可用,不可用跳转至开启网络界面,不设置网络强制关闭当前Activity*/public void validateNetWork() {if (!isConnected()) {Builder dialogBuilder = new AlertDialog.Builder(mContext);dialogBuilder.setTitle("网络设置");dialogBuilder.setMessage("网络不可用,是否现在设置网络?");dialogBuilder.setPositiveButton(android.R.string.ok,new DialogInterface.OnClickListener() {public void onClick(DialogInterface dialog, int which) {((Activity) mContext).startActivityForResult(new Intent(Settings.ACTION_SETTINGS),which);}});dialogBuilder.setNegativeButton(android.R.string.cancel,new DialogInterface.OnClickListener() {public void onClick(DialogInterface dialog, int which) {dialog.cancel();}});dialogBuilder.create();dialogBuilder.show();}}/*** 获取网络连接信息</br> 无网络:</br> WIFI网络:WIFI</br> WAP网络:CMWAP</br>* NET网络:CMNET</br>* * @return*/public String getNetworkType() {if (isConnected()) {int type = networkInfo.getType();if (ConnectivityManager.TYPE_MOBILE == type) {Log.i(TAG,"networkInfo.getExtraInfo()-->"+ networkInfo.getExtraInfo());if (NETWORK_CMWAP.equals(networkInfo.getExtraInfo().toLowerCase())) {return NETWORK_CMWAP;} else {return NETWORK_CMNET;}} else if (ConnectivityManager.TYPE_WIFI == type) {return NETWORK_WIFI;}}return "";}private static class SingletonHolder {private static ToolNetwork instance = new ToolNetwork();}
}
16、调用系统服务(打电话,发短信,获取相册,调用浏览器。。。)
package com.zftlive.android.tools;import java.io.File;
import java.util.ArrayList;
import java.util.List;import android.app.Activity;
import android.app.PendingIntent;
import android.content.ActivityNotFoundException;
import android.content.BroadcastReceiver;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.pm.ResolveInfo;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.net.Uri;
import android.provider.ContactsContract;
import android.provider.MediaStore;
import android.provider.Settings;
import android.telephony.PhoneNumberUtils;
import android.telephony.SmsManager;
import android.util.Log;
import android.widget.Toast;/*** 手机相关操作API* @author 曾繁添* @version 1.0**/
public class ToolPhone {/*** 直接呼叫指定的号码(需要<uses-permission android:name="android.permission.CALL_PHONE"/>权限)* @param mContext 上下文Context* @param phoneNumber 需要呼叫的手机号码*/public static void callPhone(Context mContext,String phoneNumber){Uri uri = Uri.parse("tel:" + phoneNumber);Intent call = new Intent(Intent.ACTION_CALL, uri);mContext.startActivity(call);}/*** 跳转至拨号界面* @param mContext 上下文Context* @param phoneNumber 需要呼叫的手机号码*/public static void toCallPhoneActivity(Context mContext,String phoneNumber){Uri uri = Uri.parse("tel:" + phoneNumber);Intent call = new Intent(Intent.ACTION_DIAL, uri);mContext.startActivity(call);}/*** 直接调用短信API发送信息(设置监听发送和接收状态)* @param strPhone 手机号码* @param strMsgContext 短信内容*/public static void sendMessage(final Context mContext,final String strPhone,final String strMsgContext){//处理返回的发送状态 String SENT_SMS_ACTION = "SENT_SMS_ACTION";Intent sentIntent = new Intent(SENT_SMS_ACTION);PendingIntent sendIntent= PendingIntent.getBroadcast(mContext, 0, sentIntent,0);// register the Broadcast ReceiversmContext.registerReceiver(new BroadcastReceiver() {@Overridepublic void onReceive(Context _context, Intent _intent) {switch (getResultCode()) {case Activity.RESULT_OK:Toast.makeText(mContext,"短信发送成功", Toast.LENGTH_SHORT).show();break;case SmsManager.RESULT_ERROR_GENERIC_FAILURE:break;case SmsManager.RESULT_ERROR_RADIO_OFF:break;case SmsManager.RESULT_ERROR_NULL_PDU:break;}}}, new IntentFilter(SENT_SMS_ACTION));//处理返回的接收状态 String DELIVERED_SMS_ACTION = "DELIVERED_SMS_ACTION";// create the deilverIntent parameterIntent deliverIntent = new Intent(DELIVERED_SMS_ACTION);PendingIntent backIntent= PendingIntent.getBroadcast(mContext, 0,deliverIntent, 0);mContext.registerReceiver(new BroadcastReceiver() {@Overridepublic void onReceive(Context _context, Intent _intent) {Toast.makeText(mContext,strPhone+"已经成功接收", Toast.LENGTH_SHORT).show();}}, new IntentFilter(DELIVERED_SMS_ACTION));//拆分短信内容(手机短信长度限制)SmsManager smsManager = SmsManager.getDefault();ArrayList<String> msgList = smsManager.divideMessage(strMsgContext);for (String text : msgList) {smsManager.sendTextMessage(strPhone, null, text, sendIntent, backIntent);}}/*** 跳转至发送短信界面(自动设置接收方的号码)* @param mActivity Activity* @param strPhone 手机号码* @param strMsgContext 短信内容*/public static void toSendMessageActivity(Context mContext,String strPhone,String strMsgContext){if(PhoneNumberUtils.isGlobalPhoneNumber(strPhone)){Uri uri = Uri.parse("smsto:" + strPhone);Intent sendIntent = new Intent(Intent.ACTION_VIEW, uri);sendIntent.putExtra("sms_body", strMsgContext);mContext.startActivity(sendIntent);}}/*** 跳转至联系人选择界面* @param mContext 上下文* @param requestCode 请求返回区分代码*/public static void toChooseContactsList(Activity mContext,int requestCode){Intent intent = new Intent(Intent.ACTION_PICK,ContactsContract.Contacts.CONTENT_URI);mContext.startActivityForResult(intent, requestCode);}/*** 获取选择的联系人的手机号码* @param mContext 上下文* @param resultCode 请求返回Result状态区分代码* @param data onActivityResult返回的Intent* @return*/public static String getChoosedPhoneNumber(Activity mContext,int resultCode,Intent data) {//返回结果String phoneResult = "";if (Activity.RESULT_OK == resultCode) {Uri uri = data.getData();Cursor mCursor = mContext.managedQuery(uri, null, null, null, null);mCursor.moveToFirst(); int phoneColumn = mCursor.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER);int phoneNum = mCursor.getInt(phoneColumn);if (phoneNum > 0) {// 获得联系人的ID号int idColumn = mCursor.getColumnIndex(ContactsContract.Contacts._ID);String contactId = mCursor.getString(idColumn);// 获得联系人的电话号码的cursor;Cursor phones = mContext.getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,null,ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = "+ contactId, null, null);if (phones.moveToFirst()) {// 遍历所有的电话号码for (; !phones.isAfterLast(); phones.moveToNext()) {int index = phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);int typeindex = phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.TYPE);int phone_type = phones.getInt(typeindex);String phoneNumber = phones.getString(index);switch (phone_type) {case 2:phoneResult = phoneNumber;break;}}if (!phones.isClosed()) {phones.close();}}}//关闭游标mCursor.close();}return phoneResult;}/*** 跳转至拍照程序界面* @param mContext 上下文* @param requestCode 请求返回Result区分代码*/public static void toCameraActivity(Activity mContext,int requestCode){Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);mContext.startActivityForResult(intent, requestCode);}/*** 跳转至相册选择界面* @param mContext 上下文* @param requestCode */public static void toImagePickerActivity(Activity mContext,int requestCode){Intent intent = new Intent(Intent.ACTION_PICK, null);intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,"image/*");mContext.startActivityForResult(intent, requestCode);}/*** 获得选中相册的图片* @param mContext 上下文* @param data onActivityResult返回的Intent* @return*/public static Bitmap getChoosedImage(Activity mContext,Intent data){if (data == null) {return null;}Bitmap bm = null;// 外界的程序访问ContentProvider所提供数据 可以通过ContentResolver接口ContentResolver resolver = mContext.getContentResolver();// 此处的用于判断接收的Activity是不是你想要的那个try {Uri originalUri = data.getData(); // 获得图片的uribm = MediaStore.Images.Media.getBitmap(resolver, originalUri); // 显得到bitmap图片// 这里开始的第二部分,获取图片的路径:String[] proj = {MediaStore.Images.Media.DATA};// 好像是android多媒体数据库的封装接口,具体的看Android文档Cursor cursor = mContext.managedQuery(originalUri, proj, null, null, null);// 按我个人理解 这个是获得用户选择的图片的索引值int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);// 将光标移至开头 ,这个很重要,不小心很容易引起越界cursor.moveToFirst();// 最后根据索引值获取图片路径String path = cursor.getString(column_index);//不用了关闭游标cursor.close();} catch (Exception e) {Log.e("ToolPhone", e.getMessage());}return bm;}/*** 调用本地浏览器打开一个网页* @param mContext 上下文* @param strSiteUrl 网页地址*/public static void openWebSite(Context mContext,String strSiteUrl){Intent webIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(strSiteUrl)); mContext.startActivity(webIntent);}/*** 跳转至系统设置界面* @param mContext 上下文*/public static void toSettingActivity(Context mContext){Intent settingsIntent = new Intent(Settings.ACTION_SETTINGS); mContext.startActivity(settingsIntent); }/*** 跳转至WIFI设置界面* @param mContext 上下文*/public static void toWIFISettingActivity(Context mContext){Intent wifiSettingsIntent = new Intent(Settings.ACTION_WIFI_SETTINGS); mContext.startActivity(wifiSettingsIntent); }/*** 启动本地应用打开PDF* @param mContext 上下文* @param filePath 文件路径*/public static void openPDFFile(Context mContext, String filePath) {try {File file = new File(filePath);if (file.exists()) {Uri path = Uri.fromFile(file);Intent intent = new Intent(Intent.ACTION_VIEW);intent.setDataAndType(path, "application/pdf");intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);mContext.startActivity(intent);}} catch (Exception e) {Toast.makeText(mContext, "未检测到可打开PDF相关软件", Toast.LENGTH_SHORT).show();}}/*** 启动本地应用打开PDF* @param mContext 上下文* @param filePath 文件路径*/public static void openWordFile(Context mContext, String filePath) {try {File file = new File(filePath);if (file.exists()) {Uri path = Uri.fromFile(file);Intent intent = new Intent("android.intent.action.VIEW");intent.addCategory("android.intent.category.DEFAULT");intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);intent.setDataAndType(path, "application/msword");mContext.startActivity(intent);}} catch (Exception e) {Toast.makeText(mContext, "未检测到可打开Word文档相关软件", Toast.LENGTH_SHORT).show();}}/*** 调用WPS打开office文档* http://bbs.wps.cn/thread-22349340-1-1.html* @param mContext 上下文* @param filePath 文件路径*/public static void openOfficeByWPS(Context mContext, String filePath){try {//文件存在性检查File file = new File(filePath);if (!file.exists()) {Toast.makeText(mContext, filePath+"文件路径不存在", Toast.LENGTH_SHORT).show();return;}//检查是否安装WPSString wpsPackageEng = "cn.wps.moffice_eng";//普通版与英文版一样
// String wpsActivity = "cn.wps.moffice.documentmanager.PreStartActivity";String wpsActivity2 = "cn.wps.moffice.documentmanager.PreStartActivity2";//默认第三方程序启动Intent intent = new Intent();intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);intent.addCategory(Intent.CATEGORY_DEFAULT);intent.setClassName(wpsPackageEng,wpsActivity2);Uri uri = Uri.fromFile(new File(filePath));intent.setData(uri);mContext.startActivity(intent);}catch (ActivityNotFoundException e){Toast.makeText(mContext, "本地未安装WPS", Toast.LENGTH_SHORT).show();} catch (Exception e) {Toast.makeText(mContext, "打开文档失败", Toast.LENGTH_SHORT).show();}}/*** 判断是否安装指定包名的APP* @param mContext 上下文* @param packageName 包路径* @return*/public static boolean isInstalledApp(Context mContext, String packageName) {if (packageName == null || "".equals(packageName)) {return false;}try {ApplicationInfo info = mContext.getPackageManager().getApplicationInfo(packageName,PackageManager.GET_UNINSTALLED_PACKAGES);return true;} catch (NameNotFoundException e) {return false;}}/*** 判断是否存在指定的Activity* @param mContext 上下文* @param packageName 包名* @param className activity全路径类名* @return*/public static boolean isExistActivity(Context mContext, String packageName,String className) {Boolean result = true;Intent intent = new Intent();intent.setClassName(packageName, className);if (mContext.getPackageManager().resolveActivity(intent, 0) == null) {result = false;} else if (intent.resolveActivity(mContext.getPackageManager()) == null) {result = false;} else {List<ResolveInfo> list = mContext.getPackageManager().queryIntentActivities(intent, 0);if (list.size() == 0) {result = false;}}return result;}}
17、文件操作工具 包括sdcard等
package com.zftlive.android.tools;import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import android.content.Context;
import android.content.SharedPreferences;
import android.graphics.Bitmap;
import android.os.Environment;
import android.os.StatFs;
import android.util.Log;/*** 文件工具类* * @author 曾繁添* @version 1.0*/
public class ToolFile {private static final String TAG = ToolFile.class.getSimpleName();/*** 检查是否已挂载SD卡镜像(是否存在SD卡)* * @return*/public static boolean isMountedSDCard() {if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) {return true;} else {Log.w(TAG, "SDCARD is not MOUNTED !");return false;}}/*** 获取SD卡剩余容量(单位Byte)* * @return*/public static long gainSDFreeSize() {if (isMountedSDCard()) {// 取得SD卡文件路径File path = Environment.getExternalStorageDirectory();StatFs sf = new StatFs(path.getPath());// 获取单个数据块的大小(Byte)long blockSize = sf.getBlockSize();// 空闲的数据块的数量long freeBlocks = sf.getAvailableBlocks();// 返回SD卡空闲大小return freeBlocks * blockSize; // 单位Byte} else {return 0;}}/*** 获取SD卡总容量(单位Byte)* * @return*/public static long gainSDAllSize() {if (isMountedSDCard()) {// 取得SD卡文件路径File path = Environment.getExternalStorageDirectory();StatFs sf = new StatFs(path.getPath());// 获取单个数据块的大小(Byte)long blockSize = sf.getBlockSize();// 获取所有数据块数long allBlocks = sf.getBlockCount();// 返回SD卡大小(Byte)return allBlocks * blockSize;} else {return 0;}}/*** 获取可用的SD卡路径(若SD卡不没有挂载则返回"")* * @return*/public static String gainSDCardPath() {if (isMountedSDCard()) {File sdcardDir = Environment.getExternalStorageDirectory();if (!sdcardDir.canWrite()) {Log.w(TAG, "SDCARD can not write !");}return sdcardDir.getPath();}return "";}/*** 以行为单位读取文件内容,一次读一整行,常用于读面向行的格式化文件* @param filePath 文件路径*/public static String readFileByLines(String filePath) throws IOException{BufferedReader reader = null;StringBuffer sb = new StringBuffer();try{reader = new BufferedReader(new InputStreamReader(new FileInputStream(filePath),System.getProperty("file.encoding")));String tempString = null;while ((tempString = reader.readLine()) != null){sb.append(tempString);sb.append("\n");}reader.close();} catch (IOException e){e.printStackTrace();} finally{if (reader != null){reader.close();}}return sb.toString();}/*** 以行为单位读取文件内容,一次读一整行,常用于读面向行的格式化文件* @param filePath 文件路径* @param encoding 写文件编码*/public static String readFileByLines(String filePath,String encoding) throws IOException{BufferedReader reader = null;StringBuffer sb = new StringBuffer();try{reader = new BufferedReader(new InputStreamReader(new FileInputStream(filePath),encoding));String tempString = null;while ((tempString = reader.readLine()) != null){sb.append(tempString);sb.append("\n");}reader.close();} catch (IOException e){e.printStackTrace();} finally{if (reader != null){reader.close();}}return sb.toString();}/*** 保存内容* @param filePath 文件路径* @param content 保存的内容* @throws IOException*/public static void saveToFile(String filePath,String content) throws IOException{saveToFile(filePath,content,System.getProperty("file.encoding"));}/*** 指定编码保存内容* @param filePath 文件路径* @param content 保存的内容* @param encoding 写文件编码* @throws IOException*/public static void saveToFile(String filePath,String content,String encoding) throws IOException{BufferedWriter writer = null;File file = new File(filePath);try{if(!file.getParentFile().exists()){file.getParentFile().mkdirs();}writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file, false), encoding));writer.write(content);} finally{if (writer != null){writer.close();}}}/*** 追加文本* @param content 需要追加的内容* @param file 待追加文件源* @throws IOException*/public static void appendToFile(String content, File file) throws IOException{appendToFile(content, file, System.getProperty("file.encoding"));}/*** 追加文本* @param content 需要追加的内容* @param file 待追加文件源* @param encoding 文件编码* @throws IOException*/public static void appendToFile(String content, File file, String encoding) throws IOException{BufferedWriter writer = null;try{if(!file.getParentFile().exists()){file.getParentFile().mkdirs();}writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file, true), encoding));writer.write(content);} finally{if (writer != null){writer.close();}}}/*** 判断文件是否存在* @param filePath 文件路径* @return 是否存在* @throws Exception*/public static Boolean isExsit(String filePath){Boolean flag = false ;try{File file = new File(filePath);if(file.exists()){flag = true;}}catch(Exception e){System.out.println("判断文件失败-->"+e.getMessage()); } return flag;}/*** 快速读取程序应用包下的文件内容* * @param context* 上下文* @param filename* 文件名称* @return 文件内容* @throws IOException*/public static String read(Context context, String filename) throws IOException {FileInputStream inStream = context.openFileInput(filename);ByteArrayOutputStream outStream = new ByteArrayOutputStream();byte[] buffer = new byte[1024];int len = 0;while ((len = inStream.read(buffer)) != -1) {outStream.write(buffer, 0, len);}byte[] data = outStream.toByteArray();return new String(data);}/*** 读取指定目录文件的文件内容* * @param fileName* 文件名称* @return 文件内容* @throws Exception*/public static String read(String fileName) throws IOException {FileInputStream inStream = new FileInputStream(fileName);ByteArrayOutputStream outStream = new ByteArrayOutputStream();byte[] buffer = new byte[1024];int len = 0;while ((len = inStream.read(buffer)) != -1) {outStream.write(buffer, 0, len);}byte[] data = outStream.toByteArray();return new String(data);}/**** 以行为单位读取文件内容,一次读一整行,常用于读面向行的格式化文件* * @param fileName* 文件名称* @param encoding* 文件编码* @return 字符串内容* @throws IOException*/public static String read(String fileName, String encoding)throws IOException {BufferedReader reader = null;StringBuffer sb = new StringBuffer();try {reader = new BufferedReader(new InputStreamReader(new FileInputStream(fileName), encoding));String tempString = null;while ((tempString = reader.readLine()) != null) {sb.append(tempString);}} catch (IOException e) {e.printStackTrace();} finally {if (reader != null) {reader.close();}}return sb.toString();}/*** 读取raw目录的文件内容* * @param context* 内容上下文* @param rawFileId* raw文件名id* @return*/public static String readRawValue(Context context, int rawFileId) {String result = "";try {InputStream is = context.getResources().openRawResource(rawFileId);int len = is.available();byte[] buffer = new byte[len];is.read(buffer);result = new String(buffer, "UTF-8");is.close();} catch (Exception e) {e.printStackTrace();}return result;}/*** 读取assets目录的文件内容* * @param context* 内容上下文* @param fileName* 文件名称,包含扩展名* @return*/public static String readAssetsValue(Context context, String fileName) {String result = "";try {InputStream is = context.getResources().getAssets().open(fileName);int len = is.available();byte[] buffer = new byte[len];is.read(buffer);result = new String(buffer, "UTF-8");is.close();} catch (Exception e) {e.printStackTrace();}return result;}/*** 读取assets目录的文件内容* * @param context* 内容上下文* @param fileName* 文件名称,包含扩展名* @return*/public static List<String> readAssetsListValue(Context context, String fileName) {List<String> list = new ArrayList<String>();try {InputStream in = context.getResources().getAssets().open(fileName);BufferedReader br = new BufferedReader(new InputStreamReader(in,"UTF-8"));String str = null;while ((str = br.readLine()) != null) {list.add(str);}} catch (IOException e) {e.printStackTrace();}return list;}/*** 获取SharedPreferences文件内容* * @param context* 上下文* @param fileNameNoExt* 文件名称(不用带后缀名)* @return*/public static Map<String, ?> readShrePerface(Context context,String fileNameNoExt) {SharedPreferences preferences = context.getSharedPreferences(fileNameNoExt, Context.MODE_PRIVATE);return preferences.getAll();}/*** 写入SharedPreferences文件内容* * @param context* 上下文* @param fileNameNoExt* 文件名称(不用带后缀名)* @param values* 需要写入的数据Map(String,Boolean,Float,Long,Integer)* @return*/public static void writeShrePerface(Context context, String fileNameNoExt,Map<String, ?> values) {try {SharedPreferences preferences = context.getSharedPreferences(fileNameNoExt, Context.MODE_PRIVATE);SharedPreferences.Editor editor = preferences.edit();for (Iterator iterator = values.entrySet().iterator(); iterator.hasNext();) {Map.Entry<String, ?> entry = (Map.Entry<String, ?>) iterator.next();if (entry.getValue() instanceof String) {editor.putString(entry.getKey(), (String) entry.getValue());} else if (entry.getValue() instanceof Boolean) {editor.putBoolean(entry.getKey(),(Boolean) entry.getValue());} else if (entry.getValue() instanceof Float) {editor.putFloat(entry.getKey(), (Float) entry.getValue());} else if (entry.getValue() instanceof Long) {editor.putLong(entry.getKey(), (Long) entry.getValue());} else if (entry.getValue() instanceof Integer) {editor.putInt(entry.getKey(),(Integer) entry.getValue());}}editor.commit();} catch (Exception e) {e.printStackTrace();}}/*** 写入应用程序包files目录下文件* * @param context* 上下文* @param fileName* 文件名称* @param content* 文件内容*/public static void write(Context context, String fileName, String content) {try {FileOutputStream outStream = context.openFileOutput(fileName,Context.MODE_PRIVATE);outStream.write(content.getBytes());outStream.close();} catch (Exception e) {e.printStackTrace();}}/*** 写入应用程序包files目录下文件* * @param context* 上下文* @param fileName* 文件名称* @param content* 文件内容*/public static void write(Context context, String fileName, byte[] content) {try {FileOutputStream outStream = context.openFileOutput(fileName,Context.MODE_PRIVATE);outStream.write(content);outStream.close();} catch (Exception e) {e.printStackTrace();}}/*** 写入应用程序包files目录下文件* * @param context* 上下文* @param fileName* 文件名称* @param modeType* 文件写入模式(Context.MODE_PRIVATE、Context.MODE_APPEND、Context.* MODE_WORLD_READABLE、Context.MODE_WORLD_WRITEABLE)* @param content* 文件内容*/public static void write(Context context, String fileName, byte[] content,int modeType) {try {FileOutputStream outStream = context.openFileOutput(fileName,modeType);outStream.write(content);outStream.close();} catch (Exception e) {e.printStackTrace();}}/*** 指定编码将内容写入目标文件* * @param target* 目标文件* @param content* 文件内容* @param encoding* 写入文件编码* @throws Exception*/public static void write(File target, String content, String encoding)throws IOException {BufferedWriter writer = null;try {if (!target.getParentFile().exists()) {target.getParentFile().mkdirs();}writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(target, false), encoding));writer.write(content);} finally {if (writer != null) {writer.close();}}}/*** 指定目录写入文件内容* @param filePath 文件路径+文件名* @param content 文件内容* @throws IOException*/public static void write(String filePath, byte[] content)throws IOException {FileOutputStream fos = null;try {File file = new File(filePath);if (!file.getParentFile().exists()) {file.getParentFile().mkdirs();}fos = new FileOutputStream(file);fos.write(content);fos.flush();} finally {if (fos != null) {fos.close();}}}/*** 写入文件* * @param inputStream下载文件的字节流对象* @param filePath文件的存放路径(带文件名称)* @throws IOException */public static File write(InputStream inputStream, String filePath) throws IOException {OutputStream outputStream = null;// 在指定目录创建一个空文件并获取文件对象File mFile = new File(filePath);if (!mFile.getParentFile().exists())mFile.getParentFile().mkdirs();try {outputStream = new FileOutputStream(mFile);byte buffer[] = new byte[4 * 1024];int lenght = 0 ;while ((lenght = inputStream.read(buffer)) > 0) {outputStream.write(buffer,0,lenght);}outputStream.flush();return mFile;} catch (IOException e) {Log.e(TAG, "写入文件失败,原因:"+e.getMessage());throw e;}finally{try {inputStream.close();outputStream.close();} catch (IOException e) {}}}/*** 指定目录写入文件内容* @param filePath 文件路径+文件名* @param content 文件内容* @throws IOException*/public static void saveAsJPEG(Bitmap bitmap,String filePath)throws IOException {FileOutputStream fos = null;try {File file = new File(filePath);if (!file.getParentFile().exists()) {file.getParentFile().mkdirs();}fos = new FileOutputStream(file);bitmap.compress(Bitmap.CompressFormat.JPEG, 100,fos);fos.flush();} finally {if (fos != null) {fos.close();}}}/*** 指定目录写入文件内容* @param filePath 文件路径+文件名* @param content 文件内容* @throws IOException*/public static void saveAsPNG(Bitmap bitmap,String filePath)throws IOException {FileOutputStream fos = null;try {File file = new File(filePath);if (!file.getParentFile().exists()) {file.getParentFile().mkdirs();}fos = new FileOutputStream(file);bitmap.compress(Bitmap.CompressFormat.PNG, 100,fos);fos.flush();} finally {if (fos != null) {fos.close();}}}
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