/**     * 壓縮圖片（質量壓縮）     * @param bitmap     */    public static File comPRessImage(Bitmap bitmap) {        ByteArrayOutputStream baos = new ByteArrayOutputStream();        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);//質量壓縮方法，這里100表示不壓縮，把壓縮后的數據存放到baos中        int options = 100;        while (baos.toByteArray().length / 1024 > 500) {  //循環判斷如果壓縮后圖片是否大于500kb,大于繼續壓縮            baos.reset();//重置baos即清空baos            options -= 10;//每次都減少10            bitmap.compress(Bitmap.CompressFormat.JPEG, options, baos);//這里壓縮options%，把壓縮后的數據存放到baos中            long length = baos.toByteArray().length;        }        SimpleDateFormat format = new SimpleDateFormat("yyyyMMddHHmmss");        Date date = new Date(System.currentTimeMillis());        String filename = format.format(date);        File file = new File(Environment.getExternalStorageDirectory(),filename+".png");        try {            FileOutputStream fos = new FileOutputStream(file);            try {                fos.write(baos.toByteArray());                fos.flush();                fos.close();            } catch (IOException e) {                BAFLogger.e(TAG,e.getMessage());                e.printStackTrace();            }        } catch (FileNotFoundException e) {            BAFLogger.e(TAG,e.getMessage());            e.printStackTrace();        }        recycleBitmap(bitmap);        return file;    }
//釋放
public static void recycleBitmap(Bitmap... bitmaps) {        if (bitmaps==null) {            return;        }        for (Bitmap bm : bitmaps) {            if (null != bm && !bm.isRecycled()) {                bm.recycle();            }        }    }