public  void saveImageToGallery(Context context, Bitmap bmp) {
    /*// 首先儲存圖片
    File appDir = new File(Environment.getExternalStorageDirectory(), "Boohee");
    if (!appDir.exists()) {
        appDir.mkdir();
    }
    String fileName = System.currentTimeMillis() + ".jpg";
    File file = new File(appDir, fileName);
    try {
        FileOutputStream fos = new FileOutputStream(file);
        bmp.compress(Bitmap.CompressFormat.JPEG, 100, fos);
        fos.flush();
        fos.close();
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

    // 其次把檔案插入到系統圖庫
    try {
        MediaStore.Images.Media.insertImage(context.getContentResolver(),
                file.getAbsolutePath(), fileName, null);
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }
    // 最後通知相簿更新
    context.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.parse("file://" + path)));*/
    File file = new File(Environment.getExternalStorageDirectory(),System.currentTimeMillis()
            + ".jpg");

    try {
        FileOutputStream stream = new FileOutputStream(file);

        bmp.compress(Bitmap.CompressFormat.JPEG, 100, stream);

        //傳送廣播讓系統重新重新整理指定圖片
        Intent intent =new Intent();
        intent.setAction(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);

        Uri uri=Uri.fromFile(file);
        intent.setData(uri);
        sendBroadcast(intent);
        Toast.makeText(getApplicationContext(), "儲存路徑："+file.getAbsolutePath(),
                Toast.LENGTH_SHORT).show();

    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }
}