Rex's BaseActivity

前言

写任何代码，当你想简化代码的时候，封装之后自己方便用的时候便是你最有心得时候，用的时候更是愉悦，久而久之都有自己的一套快速开发，常见的有会封装 application，activity 亦或是万能的adapter 。泛型，不定长数组，接口，等等都是很好的方法，注解，现在便以activity 总结一些个人的base系列，或者大家可以留言想封装任何自己觉得很重复的代码。
为什么想出这个呢，只鉴于我的同事，宁愿复制几十遍相同代码说这样快，也不愿意封装一下下。现在提供自己封装的一些很基础常用的小玩意儿

所以以下代码都是封装在BaseActivity中，使用场景都是extends BaseActivity

封装内容

1. startActivityForResult +onActivityResult

2. 精准位置 log and toast

3. Build.VERSION_CODES.M 动态权限申请

4. 更新中

* 略简化findViewById （Butterknife使用者可以无视此行哈哈~~~~）

1.startActivityForResult +onActivityResult

一般开启一个activity呢，回来想来传值或者即时回调呢需要实现这个两个方法甚至还有一个定义final的int，作为接头暗号,十分麻烦，尤其是这两个方法使用的地方距离较远 onActivityResult 一般在偏底部的位置。而startActivityForResult 可能哪里都会在，代码多的时候查看很跳跃，不方便，但两者的逻辑确实的关联在一起写的。
假设我们不需要传什么code。能够写出类似Onclick回调多好

使用效果，（虽然本身是不需要传code的）

    startActivityWithCallback(new Intent(MainActivity.this, Activity2.class), new ResultActivityAdaptor.ResultActivityListener() {@Overridepublic void onResult(int requestCode, int resultCode, Intent intent) {}});

实现代码
1.public abstract class BaseActivity extends Activity

public void startActivityWithCallback(Intent intent, ResultActivityAdaptor.ResultActivityListener listener) {mResultActivityAdaptor.startActivityForResult(intent, listener);}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {mResultActivityAdaptor.onResult(requestCode, resultCode, data);}

2.ResultActivityAdaptor

package baseframe.rex.com.utils.base;import android.app.Activity;
import android.content.Intent;
import android.util.SparseArray;/*** Created by  Rex on 2017/4/10.*/public class ResultActivityAdaptor {private static final int REQUEST_CODE_START = 20000;private SparseArray requests = new SparseArray();private Activity mActivity;private int currentReqCode = 20000;public ResultActivityAdaptor(Activity activity) {this.mActivity = activity;}public void startActivityForResult(Intent i, ResultActivityListener listener) {++this.currentReqCode;this.requests.put(this.currentReqCode, listener);this.mActivity.startActivityForResult(i, this.currentReqCode);}public boolean onResult(int requestCode, int resultCode, Intent data) {ResultActivityListener listener = (ResultActivityListener)this.requests.get(requestCode);if(listener != null) {listener.onResult(requestCode, resultCode, data);this.requests.remove(requestCode);return true;} else {return false;}}public interface ResultActivityListener {void onResult(int requestCode, int resultCode, Intent intent);}
}

log and toast

public abstract class BaseActivity extends Activity

 public static final String LOG_TAG = "rex";//输出的简化//精准到 类 方法名 行 log输出public static String buildHeader() {StackTraceElement stack = Thread.currentThread().getStackTrace()[4];return String.format("%s->%s->%d", new Object[]{stack.getClassName(), stack.getMethodName(), Integer.valueOf(stack.getLineNumber())}) + ":<--->:";}public void ToastSHORT(String msg) {Toast.makeText(BaseActivity.this, msg, Toast.LENGTH_SHORT);}public void ToastLONG(String msg) {Toast.makeText(BaseActivity.this, msg, Toast.LENGTH_LONG);}public void LogI(String msg) {Log.i(LOG_TAG, buildHeader() +""+ msg);}

动态权限申请

使用效果
extends BaseActivity

//如果谁能做到不用手动指定Manifest.permission.WRITE_EXTERNAL_STORAGE
//通过系统自动拒绝自动获取再去申请请告诉我CheckPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE, new BaseActivity.CheckPermissionOk() {@Overridepublic void ok() {//实行需要高权限的方法}@Overridepublic void denied() {ToastSHORT("该功能需要XX权限已被拒绝，需在设置重新开启！");}@Overridepublic void nok() {ToastSHORT("已成功禁止，相关功能将不可用！");}});

实现代码
BaseActivity extends Activity

private final int REQUEST_CODE = 0x123;public interface CheckPermissionOk {void ok();void denied();void nok();}private CheckPermissionOk okImpls;public void CheckPermission(String permission, CheckPermissionOk okImpl) {okImpls = okImpl;if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {//无需要检查权限if (okImpls != null) {okImpls.ok();}return;}//检查权限if (ContextCompat.checkSelfPermission(this, permission)!= PackageManager.PERMISSION_GRANTED) {//进入到这里代表没有权限.if (ActivityCompat.shouldShowRequestPermissionRationale(this, permission)) {//已经禁止提示了if (okImpls != null) {okImpls.denied();}} else {ActivityCompat.requestPermissions(this, new String[]{permission}, REQUEST_CODE);}} else {//有权限if (okImpls != null) {okImpls.ok();}}}@Overridepublic void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {super.onRequestPermissionsResult(requestCode, permissions, grantResults);switch (requestCode) {case REQUEST_CODE:if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {//用户同意授权if (okImpls != null) {okImpls.ok();}} else {//用户拒绝授权okImpls.nok();}break;}}

findViewById

这个东西在 Butterknife之后就太小儿科了….233

public abstract class BaseActivity extends Activity

 //fid的简化public <T extends View> T Fid(int id) {T tView = (T) findViewById(id);return tView;}/*** like Cid(textView1,R.id.tv1).Cid(textView2,R.id.tv2)* @param tVIew* @param id* @param <T>* @return*/public <T extends View> BaseActivity Cid(T tVIew, int id) {tVIew = Fid(id);return this;}

更新中