@Override
  protected void onActivityResult(int requestCode, int resultCode, Intent data) {

    super.onActivityResult(requestCode, resultCode, data);

    if (resultCode == Activity.RESULT_OK) {
      String sdStatus = Environment.getExternalStorageState();
      if (!sdStatus.equals(Environment.MEDIA_MOUNTED)) { // 检测sd是否可用
        Log.i("TestFile", "SD card is not avaiable/writeable right now.");
        return;
      }
      String name =
          new DateFormat().format("yyyyMMdd_hhmmss", Calendar.getInstance(Locale.CHINA)) + ".jpg";
      Toast.makeText(this, name, Toast.LENGTH_LONG).show();
      Bundle bundle = data.getExtras();
      Bitmap bitmap = (Bitmap) bundle.get("data"); // 获取相机返回的数据,并转换为Bitmap图片格式

      FileOutputStream b = null;
      File file = new File("/sdcard/myImage/");
      if (!file.exists()) file.mkdirs(); // 创建文件夹

      String fileName = "/sdcard/myImage/" + name;
      File photofile = new File(fileName);
      if (!photofile.exists()) {
        try {
          photofile.createNewFile();
        } catch (IOException e) {
          e.printStackTrace();
        }
      }
      try {
        b = new FileOutputStream(photofile);
        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, b); // 把数据写入文件
      } catch (Exception e) {
        e.printStackTrace();
      } finally {
        try {
          b.flush();
          b.close();
        } catch (IOException e) {
          e.printStackTrace();
        }
      }
      // 动态的改变gridview中的一个Item的内容
      bitmapList.set(currentIndex, bitmap);
      myGalleryAdapter.notifyDataSetChanged();
      updatePhoto(
          Long.valueOf(phoneNumberToId.get(phoneNumber.get(currentIndex))), bitmapToBytes(bitmap));
      //            ((ImageView) findViewById(R.id.imageView)).setImageBitmap(bitmap);//
      // 将图片显示在ImageView里
      Intent intent = new Intent(ContactActivity.this, ContactActivity.class);
      this.startActivity(intent);
      this.finish();
    }
  }