音乐播放
问题描述:
我做Android上背景音乐播放小的模拟,但它不工作...有代码:音乐播放
[我的活动,在的onCreate]
Intent music = new Intent(this, MusicService.class);
startService(music);
[音乐服务类]
public class MusicService extends Service implements MediaPlayer.OnErrorListener {
private final IBinder mBinder = new ServiceBinder();
MediaPlayer mPlayer;
private int length = 0;
public class ServiceBinder extends Binder {
MusicService getService()
{
return MusicService.this;
}
}
@Override
public IBinder onBind(Intent arg0){
return mBinder;
}
@Override
public void onCreate() {
super.onCreate();
mPlayer = MediaPlayer.create(this, R.raw.song1);
mPlayer.setOnErrorListener(this);
if(mPlayer!= null)
{
mPlayer.setLooping(true);
mPlayer.setVolume(100,100);
}
mPlayer.setOnErrorListener(new OnErrorListener() {
public boolean onError(MediaPlayer mp, int what, int extra){
onError(mPlayer, what, extra);
return true;
}
});
}
@Override
public int onStartCommand (Intent intent, int flags, int startId)
{
mPlayer.start();
return START_STICKY;
}
public void pauseMusic()
{
if(mPlayer.isPlaying())
{
mPlayer.pause();
length=mPlayer.getCurrentPosition();
}
}
public void resumeMusic()
{
if(mPlayer.isPlaying()==false)
{
mPlayer.seekTo(length);
mPlayer.start();
}
}
public void stopMusic()
{
mPlayer.stop();
mPlayer.release();
mPlayer = null;
}
@Override
public void onDestroy()
{
super.onDestroy();
if(mPlayer != null)
{
try{
mPlayer.stop();
mPlayer.release();
}
finally {
mPlayer = null;
}
}
}
public boolean onError(MediaPlayer mp, int what, int extra) {
Toast.makeText(this, "music player failed", Toast.LENGTH_SHORT).show();
if(mPlayer != null)
{
try{
mPlayer.stop();
mPlayer.release();
}
finally {
mPlayer = null;
}
}
return false;
}
}
我在模拟器中听不到任何歌曲。我没有完成清单文件是这样的:
<service
android:name="MusicService"
android:enabled="true">
</service>
有别的添加到清单,有没有我的代码或者用我的模拟器有问题? 谢谢!
答
我正在剪切Android上的背景音乐播放代码。这将解决你的问题。
我头创建了两个类,第一个是MainActivity,第二个是MyService。
MainActivity代码是
公共类MainActivity延伸活动实现OnClickListener {
}
现在为MyService代码是
公共类为MyService延伸服务{
private static final String TAG = "MyService";
MediaPlayer player;
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onCreate() {
Toast.makeText(this, "My Service Created", Toast.LENGTH_LONG).show();
Log.d(TAG, "onCreate");
player = MediaPlayer.create(this, R.raw.braincandy);
player.setLooping(false); // Set looping
}
@Override
public void onDestroy() {
Toast.makeText(this, "My Service Stopped", Toast.LENGTH_LONG).show();
Log.d(TAG, "onDestroy");
player.stop();
}
@Override
public void onStart(Intent intent, int startid) {
Toast.makeText(this, "My Service Started", Toast.LENGTH_LONG).show();
Log.d(TAG, "onStart");
player.start();
}
}
您必须在您的“res”文件夹中创建一个“原始”文件夹,而不是将您的音乐文件粘贴到该原始文件夹中。
+0
并在您的manifest.xml中添加以下代码
logcat中的任何错误? – Deva 2012-02-09 19:31:23
我想我有一个与频道有关的错误 - 已损坏。它会影响吗? – Madrugada 2012-02-09 19:47:00