Android音频不能播放问题

[u012137644]

 public boolean playmusic(int listPosition) {
		//playBtn.setBackgroundResource(R.drawable.play_selector);
		Mp3Info mp3Info = mp3Infos.get(listPosition);
		//musicTitle.setText(mp3Info.getTitle());
		/*Intent intent = new Intent(this.getActivity(),PlayerService.class);
		intent.setAction("com.wyj.media.MUSIC_SERVICE");
		intent.putExtra("listPosition",listPosition);
		intent.putExtra("url", mp3Info.getUrl());
		intent.putExtra("MSG", AppConstant.PlayerMsg.PLAY_MSG);
		this.getActivity().startService(intent);*/
		path=mp3Info.getUrl();
		try {
			//initLrc();
			mediaPlayer.reset();// 把各项参数恢复到初始状态
			mediaPlayer.setDataSource(path);
			mediaPlayer.prepare(); // 进行缓冲
			mediaPlayer.start(); // 开始播放
		} catch (Exception e) {
			e.printStackTrace();
		}
		Log.d(TAG,"method playmusic()has been called!");
		Log.d(TAG,"the path of this song is that:"+path);
		return true;
	}

不知这段代码是否有问题，经过测试，这个方法在歌曲条目被点击的时候是会被调用的，但是却没有播放音乐，求各位指点迷津

[友谊路一霸]

音乐播放的方法调用顺序没有问题，检查音乐文件的路径是否正确，看看播放音乐时候打印的Log (catch的异常是什么？)

[罗博士]

支持1楼，把log放到catch里面，打印一下e。

[u012137644]

引用 1 楼 u010697537 的回复:

音乐播放的方法调用顺序没有问题，检查音乐文件的路径是否正确，看看播放音乐时候打印的Log (catch的异常是什么？)

public boolean playmusic(int listPosition) {
		//playBtn.setBackgroundResource(R.drawable.play_selector);
		Mp3Info mp3Info = mp3Infos.get(listPosition);
		//musicTitle.setText(mp3Info.getTitle());
		/*Intent intent = new Intent(this.getActivity(),PlayerService.class);
		intent.setAction("com.wyj.media.MUSIC_SERVICE");
		intent.putExtra("listPosition",listPosition);
		intent.putExtra("url", mp3Info.getUrl());
		intent.putExtra("MSG", AppConstant.PlayerMsg.PLAY_MSG);
		this.getActivity().startService(intent);*/
		path=mp3Info.getUrl();
		
			//initLrc();
			mediaPlayer.reset();// 把各项参数恢复到初始状态
			try {
				mediaPlayer.setDataSource(path);
			} catch (IllegalArgumentException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (SecurityException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (IllegalStateException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			try {
				mediaPlayer.prepare();
			} catch (IllegalStateException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} // 进行缓冲
			mediaPlayer.start(); // 开始播放
		
		Log.d(TAG,"method playmusic()has been called!");
		Log.d(TAG,"the path of this song is that:"+path);
		return true;
	}

我改成这样，结果运行后Logcat显示这样


定位到Testfragement.java第100行是这样的

mediaPlayer.reset();// 把各项参数恢复到初始状态

不知错在哪里？

[lovelife_821106]

mediaPlayer没实例化吧

[u012137644]

引用 2 楼 u012061345 的回复:

支持1楼，把log放到catch里面，打印一下e。

public boolean playmusic(int listPosition) {
		//playBtn.setBackgroundResource(R.drawable.play_selector);
		Mp3Info mp3Info = mp3Infos.get(listPosition);
		//musicTitle.setText(mp3Info.getTitle());
		/*Intent intent = new Intent(this.getActivity(),PlayerService.class);
		intent.setAction("com.wyj.media.MUSIC_SERVICE");
		intent.putExtra("listPosition",listPosition);
		intent.putExtra("url", mp3Info.getUrl());
		intent.putExtra("MSG", AppConstant.PlayerMsg.PLAY_MSG);
		this.getActivity().startService(intent);*/
		path=mp3Info.getUrl();
		
			//initLrc();
			mediaPlayer.reset();// 把各项参数恢复到初始状态
			try {
				mediaPlayer.setDataSource(path);
			} catch (IllegalArgumentException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (SecurityException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (IllegalStateException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			try {
				mediaPlayer.prepare();
			} catch (IllegalStateException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} // 进行缓冲
			mediaPlayer.start(); // 开始播放
		
		Log.d(TAG,"method playmusic()has been called!");
		Log.d(TAG,"the path of this song is that:"+path);
		return true;
	}

我改成这样，结果运行后Logcat显示这样 定位到Testfragement.java第100行是这样的

mediaPlayer.reset();// 把各项参数恢复到初始状态

不知错在哪里？

[u012137644]

引用 4 楼 lovelife_821106 的回复:

mediaPlayer没实例化吧

一语惊醒梦中人，我果然犯了这种丢人的错误

[友谊路一霸]

mediaPlayer没实例化~...