Android图片添加水印

最终效果

参考https://github.com/echoMu/WaterMaskDemohttps://github.com/echoMu/WaterMaskDemo

首先要自定义左下角的view

WaterMaskView

import android.content.Context;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.widget.RelativeLayout;
import android.widget.TextView;
import com.enneagon.net.R;/*** 自定义水印view*/
public class WaterMaskView extends RelativeLayout {private TextView tv_date;private TextView tv_stationName;private TextView tv_long;private TextView tv_lat;private TextView tv_address;private TextView tv_date2;private TextView tv_stationName2;private TextView tv_long2;private TextView tv_lat2;private TextView tv_address2;public WaterMaskView(Context context) {this(context, null);}public WaterMaskView(Context context, AttributeSet attrs) {super(context, attrs);LayoutInflater.from(context).inflate(R.layout.layout_watermask, this, true);tv_date = (TextView) findViewById(R.id.tv_date);tv_stationName = (TextView) findViewById(R.id.tv_stationName);tv_long = (TextView) findViewById(R.id.tv_long);tv_lat = (TextView) findViewById(R.id.tv_lat);tv_address = (TextView) findViewById(R.id.tv_address);tv_date2 = (TextView) findViewById(R.id.tv_date2);tv_stationName2 = (TextView) findViewById(R.id.tv_stationName2);tv_long2 = (TextView) findViewById(R.id.tv_long2);tv_lat2 = (TextView) findViewById(R.id.tv_lat2);tv_address2 = (TextView) findViewById(R.id.tv_address2);}public void setInfoDate(String content) {tv_date.setText(content);tv_date2.setText(content);}public void setInfoAddress(String content) {tv_address.setText(content);tv_address2.setText(content);}public void setInfoLat(String content) {tv_lat.setText(content);tv_lat2.setText(content);}public void setInfoLon(String content) {tv_long.setText(content);tv_long2.setText(content);}public void setInfoStationName(String content) {tv_stationName.setText(content);tv_stationName2.setText(content);}}

layout_watermask.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="wrap_content"android:layout_height="wrap_content"><LinearLayoutandroid:paddingRight="4dp"android:layout_width="220dp"android:layout_height="wrap_content"android:alpha="0.4"android:background="@color/black"android:orientation="vertical"android:paddingTop="4dp"android:paddingLeft="4dp"android:paddingBottom="4dp"><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:orientation="horizontal"><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="日"android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="占"android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="占"android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="期："android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible" /><TextViewandroid:id="@+id/tv_date2"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="4dp"android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible"tools:text="2021-07-12 00:00:00" /></LinearLayout><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginTop="4dp"android:orientation="horizontal"><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="站点名称："android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible" /><TextViewandroid:id="@+id/tv_stationName2"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="4dp"android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible"tools:text="xxx站点" /></LinearLayout><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginTop="4dp"android:orientation="horizontal"><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="经"android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="占"android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="占"android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="度："android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible" /><TextViewandroid:id="@+id/tv_long2"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="4dp"android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible"tools:text="333333" /></LinearLayout><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginTop="4dp"android:orientation="horizontal"><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="纬"android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="占"android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="占"android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="度："android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible" /><TextViewandroid:id="@+id/tv_lat2"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="4dp"android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible"tools:text="1" /></LinearLayout><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginTop="4dp"android:orientation="horizontal"><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="地"android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="占"android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="占"android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="址："android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible" /><TextViewandroid:id="@+id/tv_address2"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="4dp"android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible"tools:text="1234" /></LinearLayout></LinearLayout><LinearLayoutandroid:layout_width="220dp"android:layout_height="wrap_content"android:orientation="vertical"android:paddingLeft="4dp"android:paddingTop="4dp"android:paddingRight="4dp"android:paddingBottom="4dp"><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:orientation="horizontal"><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="日"android:textColor="@color/white"android:textSize="14sp" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="占"android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="占"android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="期："android:textColor="@color/white"android:textSize="14sp" /><TextViewandroid:id="@+id/tv_date"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="4dp"android:textColor="@color/white"android:textSize="14sp"tools:text="2021-07-12 00:00:00" /></LinearLayout><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginTop="4dp"android:orientation="horizontal"><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="站点名称："android:textColor="@color/white"android:textSize="14sp" /><TextViewandroid:id="@+id/tv_stationName"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="4dp"android:textColor="@color/white"android:textSize="14sp"tools:text="xxx站点" /></LinearLayout><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginTop="4dp"android:orientation="horizontal"><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="经"android:textColor="@color/white"android:textSize="14sp" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="占"android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="占"android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="度："android:textColor="@color/white"android:textSize="14sp" /><TextViewandroid:id="@+id/tv_long"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="4dp"android:textColor="@color/white"android:textSize="14sp"tools:text="333333" /></LinearLayout><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginTop="4dp"android:orientation="horizontal"><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="纬"android:textColor="@color/white"android:textSize="14sp" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="占"android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="占"android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="度："android:textColor="@color/white"android:textSize="14sp" /><TextViewandroid:id="@+id/tv_lat"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="4dp"android:textColor="@color/white"android:textSize="14sp"tools:text="11F" /></LinearLayout><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginTop="4dp"android:orientation="horizontal"><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="地"android:textColor="@color/white"android:textSize="14sp" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="占"android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="占"android:textColor="@color/white"android:textSize="14sp"android:visibility="invisible" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="址："android:textColor="@color/white"android:textSize="14sp" /><TextViewandroid:id="@+id/tv_address"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="4dp"android:textColor="@color/white"android:textSize="14sp"tools:text="1234" /></LinearLayout></LinearLayout>
</RelativeLayout>

接着是水印工具类

WaterMaskUtil

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Rect;
import android.view.View;/*** <pre>*     author : echoMu*     e-mail :*     time   : 2017/07/12*     desc   :*     version:* </pre>*/
public class WaterMaskUtil {/*** 设置水印图片在左上角* @param src* @param watermark* @param paddingLeft* @param paddingTop* @return*/public static Bitmap createWaterMaskLeftTop(Context context, Bitmap src, Bitmap watermark,int paddingLeft, int paddingTop) {return createWaterMaskBitmap(src, watermark,dp2px(context, paddingLeft), dp2px(context, paddingTop));}/*** 设置水印图片在右下角* @param src* @param watermark* @param paddingRight* @param paddingBottom* @return*/public static Bitmap createWaterMaskRightBottom(Context context, Bitmap src, Bitmap watermark,int paddingRight, int paddingBottom) {return createWaterMaskBitmap(src, watermark,src.getWidth() - watermark.getWidth() - dp2px(context, paddingRight),src.getHeight() - watermark.getHeight() - dp2px(context, paddingBottom));}/*** 设置水印图片到右上角* @param src* @param watermark* @param paddingRight* @param paddingTop* @return*/public static Bitmap createWaterMaskRightTop(Context context, Bitmap src, Bitmap watermark,int paddingRight, int paddingTop) {return createWaterMaskBitmap( src, watermark,src.getWidth() - watermark.getWidth() - dp2px(context, paddingRight),dp2px(context, paddingTop));}/*** 设置水印图片到左下角* @param src* @param watermark* @param paddingLeft* @param paddingBottom* @return*/public static Bitmap createWaterMaskLeftBottom(Context context, Bitmap src, Bitmap watermark,int paddingLeft, int paddingBottom) {return createWaterMaskBitmap(src, watermark, dp2px(context, paddingLeft),src.getHeight() - watermark.getHeight() - dp2px(context, paddingBottom));}/*** 设置水印图片到中间* @param src* @param watermark* @return*/public static Bitmap createWaterMaskCenter(Bitmap src, Bitmap watermark) {return createWaterMaskBitmap(src, watermark,(src.getWidth() - watermark.getWidth()) / 2,(src.getHeight() - watermark.getHeight()) / 2);}/*** 绘制水印图片* @param src 原图* @param watermark 水印* @param paddingLeft* @param paddingTop* @return*/private static Bitmap createWaterMaskBitmap(Bitmap src, Bitmap watermark,int paddingLeft, int paddingTop) {if (src == null) {return null;}int width = src.getWidth();int height = src.getHeight();//创建一个bitmapBitmap newb = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);// 创建一个新的和SRC长度宽度一样的位图//将该图片作为画布Canvas canvas = new Canvas(newb);//在画布 0，0坐标上开始绘制原始图片canvas.drawBitmap(src, 0, 0, null);//在画布上绘制水印图片canvas.drawBitmap(watermark, paddingLeft, paddingTop, null);// 保存canvas.save();
//        canvas.save(Canvas.ALL_SAVE_FLAG);// 存储canvas.restore();return newb;}/*** 给图片添加文字到左上角* @param context* @param bitmap* @param text* @return*/public static Bitmap drawTextToLeftTop(Context context, Bitmap bitmap, String text,int size, int color, int paddingLeft, int paddingTop) {Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);paint.setColor(color);paint.setTextSize(dp2px(context, size));Rect bounds = new Rect();paint.getTextBounds(text, 0, text.length(), bounds);return drawTextToBitmap(context, bitmap, text, paint, bounds,dp2px(context, paddingLeft),dp2px(context, paddingTop) + bounds.height());}/*** 绘制文字到右下角* @param context* @param bitmap* @param text* @param size* @param color* @param paddingRight* @param paddingBottom* @return*/public static Bitmap drawTextToRightBottom(Context context, Bitmap bitmap, String text,int size, int color, int paddingRight, int paddingBottom) {Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);paint.setColor(color);paint.setTextSize(dp2px(context, size));Rect bounds = new Rect();paint.getTextBounds(text, 0, text.length(), bounds);return drawTextToBitmap(context, bitmap, text, paint, bounds,bitmap.getWidth() - bounds.width() - dp2px(context, paddingRight),bitmap.getHeight() - dp2px(context, paddingBottom));}/*** 绘制文字到右上方* @param context* @param bitmap* @param text* @param size* @param color* @param paddingRight* @param paddingTop* @return*/public static Bitmap drawTextToRightTop(Context context, Bitmap bitmap, String text,int size, int color, int paddingRight, int paddingTop) {Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);paint.setColor(color);paint.setTextSize(dp2px(context, size));Rect bounds = new Rect();paint.getTextBounds(text, 0, text.length(), bounds);return drawTextToBitmap(context, bitmap, text, paint, bounds,bitmap.getWidth() - bounds.width() - dp2px(context, paddingRight),dp2px(context, paddingTop) + bounds.height());}/*** 绘制文字到左下方* @param context* @param bitmap* @param text* @param size* @param color* @param paddingLeft* @param paddingBottom* @return*/public static Bitmap drawTextToLeftBottom(Context context, Bitmap bitmap, String text,int size, int color, int paddingLeft, int paddingBottom) {Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);paint.setColor(color);paint.setTextSize(dp2px(context, size));Rect bounds = new Rect();paint.getTextBounds(text, 0, text.length(), bounds);return drawTextToBitmap(context, bitmap, text, paint, bounds,dp2px(context, paddingLeft),bitmap.getHeight() - dp2px(context, paddingBottom+2));}/*** 绘制文字到中间* @param context* @param bitmap* @param text* @param size* @param color* @return*/public static Bitmap drawTextToCenter(Context context, Bitmap bitmap, String text,int size, int color) {Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);paint.setColor(color);paint.setTextSize(dp2px(context, size));Rect bounds = new Rect();paint.getTextBounds(text, 0, text.length(), bounds);return drawTextToBitmap(context, bitmap, text, paint, bounds,(bitmap.getWidth() - bounds.width()) / 2,(bitmap.getHeight() + bounds.height()) / 2);}//图片上绘制文字private static Bitmap drawTextToBitmap(Context context, Bitmap bitmap, String text,Paint paint, Rect bounds, int paddingLeft, int paddingTop) {Bitmap.Config bitmapConfig = bitmap.getConfig();paint.setDither(true); // 获取跟清晰的图像采样paint.setFilterBitmap(true);// 过滤一些if (bitmapConfig == null) {bitmapConfig = Bitmap.Config.ARGB_8888;}bitmap = bitmap.copy(bitmapConfig, true);Canvas canvas = new Canvas(bitmap);//        canvas.drawText(text, paddingLeft, paddingTop, paint);drawMultiLineText(text, paddingLeft, paddingTop, paint,canvas);return bitmap;}private static void drawMultiLineText(String str, float x, float y, Paint paint,Canvas canvas) {String[] lines = str.split("\n");float txtSize = -paint.ascent() + paint.descent();if (paint.getStyle() == Paint.Style.FILL_AND_STROKE|| paint.getStyle() == Paint.Style.STROKE) {txtSize += paint.getStrokeWidth(); // add stroke width to the text}float lineSpace = txtSize * 0.1f; // default line spacingfor (int i = 0; i < lines.length; ++i) {canvas.drawText(lines[i], x, y + (txtSize + lineSpace) * i, paint);}}/*** 缩放图片* @param src* @param w* @param h* @return*/public static Bitmap scaleWithWH(Bitmap src, double w, double h) {if (w == 0 || h == 0 || src == null) {return src;} else {// 记录src的宽高int width = src.getWidth();int height = src.getHeight();// 创建一个matrix容器Matrix matrix = new Matrix();// 计算缩放比例float scaleWidth = (float) (w / width);float scaleHeight = (float) (h / height);// 开始缩放matrix.postScale(scaleWidth, scaleHeight);// 创建缩放后的图片return Bitmap.createBitmap(src, 0, 0, width, height, matrix, true);}}/*** dip转pix* @param context* @param dp* @return*/public static int dp2px(Context context, float dp) {final float scale = context.getResources().getDisplayMetrics().density;return (int) (dp * scale + 0.5f);}/*** 将一个view转换为Bitmap* @param view* @return*/public static Bitmap convertViewToBitmap(View view){view.measure(View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED), View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());view.buildDrawingCache();Bitmap bitmap = view.getDrawingCache();return bitmap;}/*** 缩放Bitmap图片**/public static Bitmap zoomBitmap(Bitmap bitmap, int width, int height) {int w = bitmap.getWidth();int h = bitmap.getHeight();Matrix matrix = new Matrix();float scaleWidth = ((float) width / w);float scaleHeight = ((float) height / h);matrix.postScale(scaleWidth, scaleHeight);// 利用矩阵进行缩放不会造成内存溢出Bitmap newbmp = Bitmap.createBitmap(bitmap, 0, 0, w, h, matrix, true);return newbmp;}}

使用方式：

1、获取图片的URL，然后转成bitmap

  Bitmap sourBitmap = BitmapFactory.decodeFile(fileUrl);

2、添加水印，并转为Bitmap

//默认设置水印位置在左下
Bitmap WaterBitmap = saveWaterMask(context, 3, sourBitmap,lng, lat, address, stationName);

/*** @param position 左上为0，顺时针算起*/private static Bitmap saveWaterMask(Context context, int position, Bitmap sourBitmap,String lng, String lat, String address, String stationName) {WaterMaskView waterMaskView = new WaterMaskView(context);RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);waterMaskView.setLayoutParams(params);
//        waterMaskView.setCompanyText(address);
//        waterMaskView.setInfoText(stationName);String time = TimeUtils.getCurrentTimeInString();waterMaskView.setInfoDate(time);waterMaskView.setInfoAddress(address);waterMaskView.setInfoLat(lat);waterMaskView.setInfoLon(lng);waterMaskView.setInfoStationName(stationName);Bitmap waterBitmap = WaterMaskUtil.convertViewToBitmap(waterMaskView);//根据原图处理要生成的水印的宽高float width = sourBitmap.getWidth();float height = sourBitmap.getHeight();float be = width / height;if ((float) 16 / 9 >= be && be >= (float) 4 / 3) {//在图片比例区间内16;9~4：3内，将生成的水印bitmap设置为原图宽高各自的1/5waterBitmap = WaterMaskUtil.zoomBitmap(waterBitmap, (int) width / 5, (int) height / 5);} else if (be > (float) 16 / 9) {//生成4：3的水印waterBitmap = WaterMaskUtil.zoomBitmap(waterBitmap, (int) width / 5, (int) width * 3 / 20);} else if (be < (float) 4 / 3) {//生成4：3的水印waterBitmap = WaterMaskUtil.zoomBitmap(waterBitmap, (int) height * 4 / 15, (int) height / 5);}Bitmap watermarkBitmap = null;switch (position) {case 0:watermarkBitmap = WaterMaskUtil.createWaterMaskLeftTop(context, sourBitmap, waterBitmap, 0, 0);break;case 1:watermarkBitmap = WaterMaskUtil.createWaterMaskRightTop(context, sourBitmap, waterBitmap, 0, 0);break;case 2:watermarkBitmap = WaterMaskUtil.createWaterMaskRightBottom(context, sourBitmap, waterBitmap, 0, 0);break;case 3:watermarkBitmap = WaterMaskUtil.createWaterMaskLeftBottom(context, sourBitmap, waterBitmap, 0, 0);break;}return watermarkBitmap;}

3、将Bitmap保存到手机，获取文件URL，最后将文件上传到服务器

//保存图片
String fileName = "IMG_" + new Date().getTime() + RandomUtil.getRandom(10000) + ".png";
String targetFileUrl = saveBitmap(context, WaterBitmap, fileName);

private static String saveBitmap(Context context, Bitmap mBitmap, String name) {String appName = context.getResources().getString(R.string.app_name);String folder = Environment.getExternalStorageDirectory()+ File.separator + appName + File.separator + "photo";LogUtils.i("folder=" + folder);File folderFile = new File(folder);if (!folderFile.exists()) {boolean isSuccess = folderFile.mkdirs();LogUtils.i("创建文件夹路径是否成功=" + isSuccess);}String target = folder + File.separator + name;LogUtils.i("target=" + target);File targetFile = new File(target);try {targetFile.createNewFile();} catch (IOException e) {LogUtils.e("在保存图片时出错：" + e.toString());}FileOutputStream fOut = null;try {fOut = new FileOutputStream(targetFile);} catch (FileNotFoundException e) {e.printStackTrace();}mBitmap.compress(Bitmap.CompressFormat.PNG, 100, fOut);try {fOut.flush();} catch (IOException e) {e.printStackTrace();}try {fOut.close();} catch (IOException e) {e.printStackTrace();}return target;}

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