action.MEDIA_BUTTON controle lecture

**michelp3** · 09/03/2016, 13h39

Bonjour,

Je teste actuellement la partie Media

Voici un code qui teste la lecture d'un morceau de musique

J'ai 4 buttons que j'ai ajouté au code et qui fonctionnent bien mais normalement je dois voir

apparaitre aussi les boutons contrôle de lecture qui sont en rapport ave le receiver MediaControlReceiver définit ds le Manifest

Seul le bouton de contrôle du volume est accessible .

Si une idée est disponible , je suis preneur, Merci

Voici le code AudioPlayerActivity.java et le Manifest

Code :

Sélectionner tout - Visualiser dans une fenêtre à part

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[
 package com.paad.mediaplayer;
import java.io.IOException;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.graphics.Bitmap;
import android.media.AudioManager;
import android.media.AudioManager.OnAudioFocusChangeListener;
import android.media.MediaMetadataRetriever;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.media.RemoteControlClient;
import android.media.RemoteControlClient.MetadataEditor;
import android.media.audiofx.BassBoost;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
@SuppressLint("NewApi")
public class AudioPlayerActivity extends Activity {
  static final String TAG = "PlayerActivity";
  //Bitmap pochette = audio.png;
  Bitmap pochette = null;
  
  private ActivityMediaControlReceiver activityMediaControlReceiver;
  private MediaPlayer mediaPlayer;
  private RemoteControlClient myRemoteControlClient;
  
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.audioplayer);
    /**
     * Listing 15-6: Setting the volume control stream for an Activity
     */
    setVolumeControlStream(AudioManager.STREAM_MUSIC);
    registerRemoteControlClient();
    configureAudio();
    
    Button buttonPlay = (Button)findViewById(R.id.buttonPlay);
    buttonPlay.setOnClickListener(new OnClickListener() {
      public void onClick(View v) {
        play();
      }
    });
    
    Button buttonBass = (Button)findViewById(R.id.buttonBassBoost);
    buttonBass.setOnClickListener(new OnClickListener() {
      public void onClick(View v) {
        bassBoost();
      }
    });
    
    Button buttonPause = (Button)findViewById(R.id.buttonPause);
    buttonPause.setOnClickListener(new OnClickListener() {
      public void onClick(View v) {
       pause();
      }
    });
    
    Button buttonStop = (Button)findViewById(R.id.buttonStop);
    buttonStop.setOnClickListener(new OnClickListener() {
      public void onClick(View v) {
        stop();
      }
    });
  }
  
  /**
   * Listing 15-9: Media button press Broadcast Receiver implementation
   */
  public class ActivityMediaControlReceiver extends BroadcastReceiver {
   public ActivityMediaControlReceiver() {
  // TODO Auto-generated constructor stub
        super ();
        Log.d("BROADReceiver","broad");
 }
     
    @Override
    public void onReceive(Context context, Intent intent) {
      Log.d("ONReceiver", intent.toString()); 
      if (MediaControlReceiver.ACTION_MEDIA_BUTTON.equals(
          intent.getAction())) {
        KeyEvent event =
          (KeyEvent)intent.getParcelableExtra(Intent.EXTRA_KEY_EVENT);
        
         Log.d("Receiver", event.toString());
      
        switch (event.getKeyCode()) {
          case (KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE) : 
            if (mediaPlayer.isPlaying())
              pause();
            else
              play();
            break;
          case (KeyEvent.KEYCODE_MEDIA_PLAY) : 
            play(); break;
          case (KeyEvent.KEYCODE_MEDIA_PAUSE) : 
            pause(); break;
          case (KeyEvent.KEYCODE_MEDIA_NEXT) : 
            skip(); break;
          case (KeyEvent.KEYCODE_MEDIA_PREVIOUS) : 
            previous(); break;
          case (KeyEvent.KEYCODE_MEDIA_STOP) : 
            stop(); break;
          default: break;
        }
      }
    }
  }
  
  @Override
  protected void onResume() {
    super.onResume();
    /**
     * Listing 15-10: Media button press Receiver manifest declaration
     */
    Log.d("RESUME", "resume");
    // Register the Media Button Event Receiver to 
    // listen for media button presses.
    AudioManager am = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
    
    ComponentName component = new ComponentName(this, MediaControlReceiver.class);
    am.registerMediaButtonEventReceiver(component);
    // Register a local Intent Receiver that receives media button
    // presses from the Receiver registered in the manifest.
    activityMediaControlReceiver = new ActivityMediaControlReceiver();
    IntentFilter filter = 
      new IntentFilter(MediaControlReceiver.ACTION_MEDIA_BUTTON);
    registerReceiver(activityMediaControlReceiver, filter);
    //
    
    IntentFilter noiseFilter = new IntentFilter(AudioManager.ACTION_AUDIO_BECOMING_NOISY);
    registerReceiver(new NoisyAudioStreamReceiver(), noiseFilter);
  }
  
  public void play() {    
    /**
     * Listing 15-11: Requesting the audio focus
     */
 Log.d("PLAY", "play");
    AudioManager am = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
    // Request audio focus for playback
    int result = am.requestAudioFocus(focusChangeListener,
                   // Use the music stream.
                   AudioManager.STREAM_MUSIC,
                   // Request permanent focus.
                   AudioManager.AUDIOFOCUS_GAIN);
       
    if (result == AudioManager.AUDIOFOCUS_REQUEST_GRANTED) {
      mediaPlayer.start();
    }
    
    if (result == AudioManager.AUDIOFOCUS_REQUEST_GRANTED) myRemoteControlClient.setPlaybackState(RemoteControlClient.PLAYSTATE_PLAYING);
    //if (result == AudioManager.AUDIOFOCUS_REQUEST_GRANTED) myRemoteControlClient.setPlaybackState(RemoteControlClient.PLAYSTATE_BUFFERING);
  }
  
  /**
   * Listing 15-12: Responding to the loss of audio focus
   */
  private OnAudioFocusChangeListener focusChangeListener = 
    new OnAudioFocusChangeListener() {
    
    public void onAudioFocusChange(int focusChange) {
      AudioManager am = 
        (AudioManager)getSystemService(Context.AUDIO_SERVICE);
      
      switch (focusChange) {
        case (AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK) :
          // Lower the volume while ducking.
          mediaPlayer.setVolume(0.2f, 0.2f);
          break;
        case (AudioManager.AUDIOFOCUS_LOSS_TRANSIENT) : 
          pause();
          break;
        case (AudioManager.AUDIOFOCUS_LOSS) :
          stop();
          ComponentName component = 
            new ComponentName(AudioPlayerActivity.this,
              MediaControlReceiver.class);
          am.unregisterMediaButtonEventReceiver(component);
          break;
        case (AudioManager.AUDIOFOCUS_GAIN) : 
          // Return the volume to normal and resume if paused.
          mediaPlayer.setVolume(1f, 1f);
          mediaPlayer.start();
          break;
        default: break;
      }
    }
  };
  
  public void stop() {
    mediaPlayer.stop();
    myRemoteControlClient.setPlaybackState(RemoteControlClient.PLAYSTATE_STOPPED);
    
    /**
     * Listing 15-13: Abandoning audio focus
     */
    Log.d("STOP", "stop");
    AudioManager am = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
    am.abandonAudioFocus(focusChangeListener);
  }
  
  /**
   * Listing 15-14: Pausing output when the headset is disconnected
   */
  private class NoisyAudioStreamReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
      if (AudioManager.ACTION_AUDIO_BECOMING_NOISY.equals
        (intent.getAction())) {
        pause();
      }
    }
  }
  
  private void registerRemoteControlClient() {
    /**
     * Listing 15-15: Registering a Remote Control Client
     */
    AudioManager am = 
      (AudioManager)getSystemService(Context.AUDIO_SERVICE);
    // Create a Pending Intent that will broadcast the 
    // media button press action. Set the target component 
    // to your Broadcast Receiver. 
    Intent mediaButtonIntent = new Intent(Intent.ACTION_MEDIA_BUTTON);
    ComponentName component = 
      new ComponentName(this, MediaControlReceiver.class);
    mediaButtonIntent.setComponent(component);
    PendingIntent mediaPendingIntent =
       PendingIntent.getBroadcast(getApplicationContext(), 0,    
                                  mediaButtonIntent, 0);
    // Create a new Remote Control Client using the
    // Pending Intent and register it with the
    // Audio Manager
    myRemoteControlClient = 
      new RemoteControlClient(mediaPendingIntent);
    am.registerRemoteControlClient(myRemoteControlClient);
    
    /**
     * Listing 15-16: Configuring the Remote Control Client playback controls
     */
    myRemoteControlClient.setTransportControlFlags(
      RemoteControlClient.FLAG_KEY_MEDIA_PLAY|
      RemoteControlClient.FLAG_KEY_MEDIA_PLAY_PAUSE|
      RemoteControlClient.FLAG_KEY_MEDIA_REWIND|
      RemoteControlClient.FLAG_KEY_MEDIA_FAST_FORWARD |
      RemoteControlClient.FLAG_KEY_MEDIA_STOP);
  }
  private void setRemoteControlMetadata(Bitmap artwork, 
      String album, String artist, long trackNumber) {
    /**
     * Listing 15-17: Applying changes to the Remote Control Client metadata
     */
    MetadataEditor editor = myRemoteControlClient.editMetadata(false);
    editor.putBitmap(MetadataEditor.BITMAP_KEY_ARTWORK, artwork);
    editor.putString(MediaMetadataRetriever.METADATA_KEY_ALBUM, album);
    editor.putString(MediaMetadataRetriever.METADATA_KEY_ARTIST, artist);
    editor.putLong(MediaMetadataRetriever.METADATA_KEY_CD_TRACK_NUMBER, 
                   trackNumber);
    editor.apply();
  }
  
  private void bassBoost() {
    /**
     * Listing 15-22: Applying audio effects
     */
    int sessionId = mediaPlayer.getAudioSessionId();
    short boostStrength = 500;
    int priority = 0;
    BassBoost bassBoost = new BassBoost (priority, sessionId);
    bassBoost.setStrength(boostStrength);
    bassBoost.setEnabled(true);
  }
  
  private void configureAudio() {
    try {      
      mediaPlayer = new MediaPlayer();
      mediaPlayer.setDataSource("/sdcard/test.mp3");
      mediaPlayer.prepare();
      
      // TODO setRemoteControlMetadata();
      setRemoteControlMetadata(pochette,"Sleep Away","Bobo Acri", 320);
      
      mediaPlayer.setOnCompletionListener(new OnCompletionListener() {
        public void onCompletion(MediaPlayer mp) {
          AudioManager am = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
          am.abandonAudioFocus(focusChangeListener);
        }
      });
    } catch (IllegalArgumentException e) {
      Log.d(TAG, "Illegal Argument Exception: " + e.getMessage());
    } catch (SecurityException e) {
      Log.d(TAG, "Security Exception: " + e.getMessage());
    } catch (IllegalStateException e) {
      Log.d(TAG, "Illegal State Exception: " + e.getMessage());
    } catch (IOException e) {
      Log.d(TAG, "IO Exception: " + e.getMessage());
    }
  }
  
  public void pause() {
    mediaPlayer.pause();
    myRemoteControlClient.setPlaybackState(RemoteControlClient.PLAYSTATE_PAUSED);
    Log.d("PAUSE", "pause");
  }
  
  public void skip() {
    // TODO Move to the next audio file.
    // TODO Use setRemoteControlMetadata to update the remote control metadata.
  }
  
  public void previous() {
    // TODO Move to the previous audio file.
    // TODO Use setRemoteControlMetadata to update the remote control metadata.
  }
}

Code :

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<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="<a href="http://schemas.android.com/apk/res/android" target="_blank">http://schemas.android.com/apk/res/android</a>"
  package="com.paad.mediaplayer"
  android:versionCode="1"
  android:versionName="1.0" >
  <uses-sdk android:targetSdkVersion="17" />
 
  <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
  <application
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name" android:debuggable="true">
 <receiver android:name=".MediaControlReceiver">
   <intent-filter android:priority="1000000000000000">
     <action android:name="android.intent.action.MEDIA_BUTTON"/>
   </intent-filter>
 </receiver>
    <activity
      android:label="AudioPlayer"
      android:name=".AudioPlayerActivity" >
      <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
      </intent-filter>
    </activity>
 
 
  </application>
</manifest>

**michelp3** · 10/03/2016, 11h54

Pas de musicien à bord ??

action.MEDIA_BUTTON controle lecture

Android

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