android 调用相机保存拍照后的图片

Intent intent = new Intent();
intent.setAction("android.media.action.IMAGE_CAPTURE");
 File out = new File(Environment.getExternalStorageDirectory(), "camera.jpg");
Uri uri = Uri.fromFile(out);
intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);	 
startActivityForResult(intent, MEDIA);