Android Media Player play/pause Button

问题:

In my project, I am playing music file in android media player by using the following code

MediaPlayer mPlayer = MediaPlayer.create(MyActivity.this, R.raw.myfile);
mPlayer.start();

the above is coded in the onclick of the play button. I want to pause the playback by clicking the same button again.ie) single button for play/pause. How shall i do this.

回答1:

You could use simple if-check to handle the pausing. Try this:

if(mPlayer.isPlaying()){
    mPlayer.pause();
} else {
    mPlayer.start();
}

回答2:

Please try this::

final Button bPlay = (Button) findViewById(R.id.bPlay);
MediaPlayer song1 = MediaPlayer.create(tutorialFour.this, R.raw.fluet);
Button bStop = (Button) findViewById(R.id.bStop);
bPlay.setWidth(10);

song1.setOnCompletionListener(new OnCompletionListener() {

        public void onCompletion(MediaPlayer mp) {

            bPlay.setText("Play");


        }
    });

bPlay.setOnClickListener(new View.OnClickListener() {

        public void onClick(View v) {
            // TODO Auto-generated method stub
            b = true;

            if (bPlay.getText().equals("Play") && b == true) {

                song1.start();

                bPlay.setText("Pause");
                b = false;
            } else if (bPlay.getText().equals("Pause")) {
                x = song1.getCurrentPosition();
                song1.pause();
                bPlay.setText("Resume");
                Log.v("log", "" + x);
                b = false;
            } else if (bPlay.getText().equals("Resume") && b == true) {
                song1.seekTo(x);
                song1.start();
                bPlay.setText("Pause");
                b = false;
            }


        }

    });

回答3:

Inside the button click check for mediaPlayer.isPlaying(). This will return true if the media player is playing else false.

So now with this, flag value you can make a if statement and switch to play or pause like this,

button.setOnClickListener(new View.OnClickListener() {

        public void onClick(View view) {

            if (mediaplayer.isPlaying()) {
                mediaplayer.pause();
            } else {
                mediaplayer.start();
            }
        }
    });

回答4:

Below code takes care of your play/pause button click event along with forward and backward buttons for forward and backward seek on the seekbar provided (which is synchronized with the media track). Currently it plays just ONE song. However, you can add to that. This is my first media player using mediaplayer class, so you might find it a bit primitive. However if you need you can also check out the VideoView examples. It's apparently easier with VideoView as the standard media console is already present in the form of pre-defined widgets. so that makes designing the player much easier.

package in.org.Test;

import android.app.Activity;
import android.media.MediaPlayer;

import android.os.Bundle;

import android.view.View;
import android.view.View.OnClickListener;

import android.widget.ImageButton;

import android.widget.ProgressBar;
import android.widget.SeekBar;

import android.widget.Toast;

public class Test12Activity extends Activity implements OnClickListener,Runnable {

    private static final String isPlaying = "Media is Playing"; 
    private static final String notPlaying = "Media has stopped Playing"; 

    private SeekBar seek;

    MediaPlayer player = new MediaPlayer();
     private ImageButton plus,minus;

    ImageButton im;

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

        plus = (ImageButton) findViewById(R.id.imageButton2);
        minus = (ImageButton) findViewById(R.id.imageButton3);


        player = MediaPlayer.create(this, R.raw.sound2);


        player.setLooping(false); 
        im = (ImageButton) this.findViewById(R.id.imageButton1);


        seek = (SeekBar) findViewById(R.id.seekBar1);
        seek.setVisibility(ProgressBar.VISIBLE);
        seek.setProgress(0);
        seek.setMax(player.getDuration());
        new Thread(this).start();


        im.setOnClickListener(this);
        player.start(); 

        Toast.makeText(this, isPlaying, Toast.LENGTH_LONG).show();


        plus.setOnClickListener(new OnClickListener()   {
            @Override
            public void onClick(View v) { int cu = player.getCurrentPosition();  player.seekTo(cu-5000); }});
        minus.setOnClickListener(new OnClickListener()  {
            @Override
            public void onClick(View v) {int cu = player.getCurrentPosition();  player.seekTo(cu+5000);}});


    }


    @Override
    public void onClick(View arg0) {
        if (arg0.getId() == R.id.imageButton1) {
        if(player.isPlaying())  {
        player.pause();

        Toast.makeText(this, notPlaying, Toast.LENGTH_LONG).show();
        ImageButton img1=(ImageButton) this.findViewById(R.id.imageButton1);

        img1.setImageResource(R.drawable.play);

         }
        else
        {
            player.start();
            Toast.makeText(this, isPlaying, Toast.LENGTH_LONG).show();

            ImageButton img1=(ImageButton) this.findViewById(R.id.imageButton1);
            img1.setImageResource(R.drawable.pause);
        }   
        }
      }

    @Override
    public void run() {
        int currentPosition= 0; String s;
        int total = player.getDuration();
        while (player!=null && currentPosition<total) {
            try {
                Thread.sleep(1000);
                currentPosition= player.getCurrentPosition();
            } catch (InterruptedException e) {
                return;
            } catch (Exception e) {
                return;
            }            

            seek.setProgress(currentPosition);


        }


    }
}

回答5:

 MediaPlayer mpE = MediaPlayer.create(GuitarTuner.this, R.raw.test2 );

    play.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            if (mpE.isPlaying()) {
                mpE.pause();
                play.setBackgroundResource(R.drawable.play);
            } else {

                mpE.start();
                play.setBackgroundResource(R.drawable.pause);
            }

        }
    });

回答6:

For pausing the Mediaplayer:

Mediaplayer.pause();
length = Mediaplayer.getCurrentPosition();

and for resuming the player from the position where it stopped lately is done by:

Mediaplayer.seekTo(length);
Mediaplayer.start();

回答7:

public class MainActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

//the song was previously saved in the raw folder. The name of the song is mylife (it's an mp3 file) final MediaPlayer mMediaPlayer = MediaPlayer.create(MainActivity.this, R.raw.mylife);

    //      Play song
    Button playButton = (Button) findViewById(R.id.play);
    playButton.setOnClickListener(new View.OnClickListener() {
        public void onClick(View view) {
            mMediaPlayer.start(); // no need to call prepare(); create() does that for you
        }
    });
    //      Pause song
    Button pauseButton = (Button) findViewById(R.id.pause);
    pauseButton.setOnClickListener(new View.OnClickListener() {
        public void onClick(View view) {
            mMediaPlayer.pause();
        }
    });

    //      Stop song - when you stop a song, you can't play it again. First you need to prepare it.

    Button stopButton = (Button) findViewById(R.id.stop);
    stopButton.setOnClickListener(new View.OnClickListener() {
        public void onClick(View view) {
            mMediaPlayer.stop();
            mMediaPlayer.prepareAsync();
        }
    });

}

}