[FIXED] How To play radio app in background and show Widget on notification bar?

Issue

Considering this code:

package com.radio.radiostar;

import android.app.Activity;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnBufferingUpdateListener;
import android.media.MediaPlayer.OnPreparedListener;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ProgressBar;

import java.io.IOException;


 public class MainActivity extends Activity implements OnClickListener {

private final static String RADIO_STATION_URL = "http://178.32.137.180:8665/stream";

private ProgressBar playSeekBar;

private Button buttonPlay;

private Button buttonStopPlay;

private MediaPlayer player;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    initializeUIElements();

    initializeMediaPlayer();
}

private void initializeUIElements() {

    playSeekBar = (ProgressBar) findViewById(R.id.progressBar1);
    playSeekBar.setMax(100);
    playSeekBar.setVisibility(View.INVISIBLE);

    buttonPlay = (Button) findViewById(R.id.buttonPlay);
    buttonPlay.setOnClickListener(this);

    buttonStopPlay = (Button) findViewById(R.id.buttonStopPlay);
    buttonStopPlay.setEnabled(false);
    buttonStopPlay.setOnClickListener(this);

}

public void onClick(View v) {
    if (v == buttonPlay) {
        startPlaying();
    } else if (v == buttonStopPlay) {
        stopPlaying();

    }
}

private void startPlaying() {
    buttonStopPlay.setEnabled(true);
    buttonPlay.setEnabled(false);

    playSeekBar.setVisibility(View.VISIBLE);

    player.prepareAsync();

    player.setOnPreparedListener(new OnPreparedListener() {

        public void onPrepared(MediaPlayer mp) {
            player.start();
        }
    });

}

private void stopPlaying() {
    if (player.isPlaying()) {
        player.stop();
        player.release();
        initializeMediaPlayer();
    }

    buttonPlay.setEnabled(true);
    buttonStopPlay.setEnabled(false);
    playSeekBar.setVisibility(View.INVISIBLE);

}

private void initializeMediaPlayer() {
    player = new MediaPlayer();
    try {
        player.setDataSource(RADIO_STATION_URL);
    } catch (IllegalArgumentException e) {
        e.printStackTrace();
    } catch (IllegalStateException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

    player.setOnBufferingUpdateListener(new OnBufferingUpdateListener() {

        public void onBufferingUpdate(MediaPlayer mp, int percent) {
            playSeekBar.setSecondaryProgress(percent);
            Log.i("Buffering", "" + percent);
        }
    });
}

@Override
protected void onPause() {
    super.onPause();
    if (player.isPlaying()) {
        player.stop();
    }
}


};

I want to enable the background play, with a widget on notification bar like "apollo" or any other media player (with only play/pause button and the "x" to close streaming and background). Can you help me, writing the code that I must use, and in which part of code? Thanks in advance. Fabio.

EDIT: I have deleted

if (player.isPlaying()) {
        player.p();

From

@Override
protected void onPause() {
   super.onPause();


}

And now works in background u.u I only need to show the widget on notification bar :)

Solution

You want to play the stream while the app is minimized? Then you have to user the Service. You should move your code to the service. And you will be able to handle notification bar from the service as well.

When you do this, you will probably ask yourself "how can I now update the UI since the player is handled in the service". The answer to this is usage of BroadcastService where your Service will broadcast all important data (like timer ticks while stream is active) and your Activity has to catch those data and use it to fill its own UI.

Since the code for what I described here is huge, you should try implementing a service and broadcast logic first, and if you are stuck, come back here with a concrete question.

Answered By - sandalone
Answer Checked By - Robin (JavaFixing Admin)