2011.08.12（2）——— android MediaPlayer听筒播放

2011.08.12（2）——— android MediaPlayer听筒播放

要实现听筒播放只需在上一博客的基础上增加AudioManager即可

am.setSpeakerphoneOn(false);setVolumeControlStream(AudioManager.STREAM_VOICE_CALL);am.setMode(AudioManager.MODE_IN_CALL);

增加上面3行代码即可

完整代码如下：

package com.lp;import java.io.IOException;import android.app.Activity;import android.content.Context;import android.media.AudioManager;import android.media.MediaPlayer;import android.media.MediaPlayer.OnCompletionListener;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class MainActivity extends Activity {private Button play;private Button stop;private boolean isReleased= false;private boolean isPlaying= false;private MediaPlayer mMediaPlayer = new MediaPlayer();private AudioManager am;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        play = (Button)findViewById(R.id.main_play);        stop = (Button)findViewById(R.id.main_stop);        am = (AudioManager) getSystemService(Context.AUDIO_SERVICE);        play.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {am.setSpeakerphoneOn(false);setVolumeControlStream(AudioManager.STREAM_VOICE_CALL);am.setMode(AudioManager.MODE_IN_CALL);try{if ( !isPlaying ){/* 装载资源中的音乐 */mMediaPlayer = MediaPlayer.create(MainActivity.this, R.raw.test2);isPlaying = true;isReleased = false;/* 设置是否循环 */mMediaPlayer.setLooping(true);//mMediaPlayer.setAudioStreamType(AudioManager.STREAM_VOICE_CALL);try{mMediaPlayer.prepare();}catch (IllegalStateException e){e.printStackTrace();}catch (IOException e){e.printStackTrace();}mMediaPlayer.start();}}catch (IllegalStateException e){e.printStackTrace();}mMediaPlayer.setOnCompletionListener(new OnCompletionListener() {// @Overridepublic void onCompletion(MediaPlayer arg0){mMediaPlayer.release(); am.setMode(AudioManager.MODE_NORMAL);}});}        });                stop.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {if(isPlaying&&!isReleased){isReleased = true;mMediaPlayer.stop();mMediaPlayer.release();isPlaying = false;am.setMode(AudioManager.MODE_NORMAL);}}});    }}

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