最近做了個留言板的功能，可以發送視頻，圖片，文字，表情，畫板和語音；其中圖片和視頻的效果要跟微信中的效果一樣。不知道其他人是怎么做的，我是在圖片加載成功后又對圖片做了處理，加了個遮罩效果；

adapter中的代碼：

ImageLoader.getInstance().displayImage(picPath,holder.image,options,new SimpleImageLoadingListener(){   @Override   public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage){      finalHolder.image.setImageBitmap(MsgUtil.addBigFrame(loadedImage,R.drawable.message_bg,0,displaySize));   }});
MsgUtil.java中的代碼；
PRivate static final String TAG = "MsgUtil";    //給圖片添加蒙版    public static Bitmap addBigFrame(Bitmap bm,int res,int videoPic,int[] display){        //Bitmap frameBitmap = BitmapFactory.decodeResource(getResources(),res);        Bitmap frameBitmap = readBitMap(res);        Drawable[] array = new Drawable[2];//        float scale;//        if(bm.getWidth()>=bm.getHeight()){//            scale = display[0]/(float)bm.getWidth();//        }else{//            scale = display[1]/(float)bm.getHeight();//        }////        Matrix matrix = new Matrix();//        matrix.setScale(scale, scale);////        bm = Bitmap.createBitmap(bm,0,0,bm.getWidth(),bm.getHeight(),matrix,true);//        if(videoPic == 1){//            frameBitmap = Bitmap.createScaledBitmap(frameBitmap,bm.getWidth()*3,bm.getHeight()*3,false);//        }else{
	//用原來圖片的大小創建遮罩圖            frameBitmap = Bitmap.createScaledBitmap(frameBitmap,bm.getWidth(),bm.getHeight(),false);//        }        LogUtil.d(TAG,"frameBitmap.getWidth()="+frameBitmap.getWidth()+",frameBitmap.getHeight()="+frameBitmap.getHeight());        array[0] = new BitmapDrawable(bm);        array[1] = new BitmapDrawable(frameBitmap);        LayerDrawable layerDrawable = new LayerDrawable(array);        layerDrawable.setLayerInset(0, 0, 0, 0, 0);        // layerDrawable.setBounds();        return drawableToBitmap(layerDrawable);    }    //將Drawable轉換成Bitmap    public static Bitmap drawableToBitmap(Drawable drawable){//        Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(),//                drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565);        Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(),                Bitmap.Config.RGB_565);        Canvas canvas = new Canvas(bitmap);        drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());        drawable.draw(canvas);        return bitmap;    }    //以最省內在的方式創建Bitmap    public static Bitmap readBitMap(int resId){        BitmapFactory.Options options = new BitmapFactory.Options();        options.inPreferredConfig = Bitmap.Config.RGB_565;        options.inPurgeable=true;        options.inInputShareable = true;        InputStream is = HaierApp.getContext().getResources().openRawResource(resId);//        InputStream is = getImg(Environment.getExternalStorageDirectory()+"/download_test/downloadtest.jpg");        return BitmapFactory.decodeStream(is,null,options);    }
下面是用來遮罩的圖片