Android-将编码的base64图像，添加水印，转换成File存储到手机

一、将图片file转换成bitmap

Bitmap bitmap = BitmapFactory.decodeFile(file.getAbsolutePath());

二、给图片添加水印

 String[] content = new String[]{"纬度：" + latitude, "经度：" + longitude, "地址：" + signAddress, "时间：" + DateTimeUtils.getYMD_HM_Date(), "记录人：" + userInfo.userName, "项目：" + currProjectName};Bitmap resultBitmap = WaterMarkUtils.drawTextToLeftBottomSignIn(SignProjectWebActivity.this, bitmap, content, 12, Color.parseColor("#ffffff"), 20, 20);

循环添加几行文字： 

 public static Bitmap drawTextToLeftBottomSignIn(Context context, Bitmap bitmap, String[] array, int size, int color, int paddingLeft, int paddingBottom) {Bitmap.Config bitmapConfig = bitmap.getConfig();if (bitmapConfig == null) {bitm