MediaScanner example

MediaScannerNotifier.java

public class MediaScannerNotifier implements MediaScannerConnectionClient, Handler.Callback {

	private static final String TAG = "MediaScannerNotifier";

	public static boolean submit(Context context, File file, String type) {
		if (needScan(type)) {
			new MediaScannerNotifier(context, file);
			return true;
		}
		return false;
	}

	public static boolean submit(Activity activity, File file, Intent intent, OnViewErrorListener listener,
			Object cookie) {
		if (needScan(intent.getType())) {
			new MediaScannerNotifier(activity, file, intent, listener, cookie);
			return true;
		}
		return false;
	}

	public interface OnViewErrorListener {
		public void OnViewError(Object cookie);
	}

	private static boolean needScan(String type) {
		if (Build.VERSION.SDK_INT >= 11) {
			return true;
		}

		return type != null && (type.startsWith("image") || type.startsWith("video"));
	}

	private MediaScannerNotifier(Context context, File file) {
		mFile = file;
		mContext = context.getApplicationContext();
		mConnection = new MediaScannerConnection(mContext, this);
		connect();
	}

	private MediaScannerNotifier(Activity activity, File file, Intent intent, OnViewErrorListener listener,
			Object cookie) {
		mFile = file;
		mIntent = intent;
		mListener = listener;
		mCookie = cookie;
		mActivity = activity;
		mHandler = new Handler(this);
		mConnection = new MediaScannerConnection(activity, this);
		connect();
	}

	@Override
	public void onMediaScannerConnected() {
		MyLog.i(TAG, "Submitting %s for scanning", mFile);
		mConnection.scanFile(mFile.getAbsolutePath(), null);
	}

	@Override
	public void onScanCompleted(String path, Uri uri) {
		MyLog.i(TAG, "Scan complete", mFile);
		if (mIntent != null) {
			mHandler.sendEmptyMessage(0);
		}
		mConnection.disconnect();
	}

	@Override
	public boolean handleMessage(Message msg) {
		try {
			mActivity.startActivity(mIntent);
		} catch (ActivityNotFoundException x) {
			if (mListener != null) {
				mListener.OnViewError(mCookie);
			}
		}
		return true;
	}

	private void connect() {
		MyLog.i(TAG, "Connecting to media scanner service");
		mConnection.connect();
	}

	private Context mContext;
	private Activity mActivity;

	private File mFile;

	private MediaScannerConnection mConnection;

	private Intent mIntent;
	private OnViewErrorListener mListener;
	private Object mCookie;
	private Handler mHandler;
}