通知系统相册收录新图片

private void galleryAddPic() {    Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);    File f = new File(mCurrentPhotoPath);    Uri contentUri = Uri.fromFile(f);    mediaScanIntent.setData(contentUri);    this.sendBroadcast(mediaScanIntent);}

Note: If you saved your photo to the directory provided by getExternalFilesDir(), the media scanner cannot access the files because they are private to your app.

官网地址：http://developer.android.com/training/camera/photobasics.html