我正在播放来自SD卡的歌曲。
它播放得很好。我尝试实现一个进度条,以便当用户移动进度条时,根据进度条的位置向前或向后调整歌曲。
以下是代码:
public class ViewAudio extends Activity implements OnSeekBarChangeListener,OnSeekCompleteListener,OnCompletionListener,OnPreparedListener{
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.audio_player);
System.gc();
Intent i = getIntent();
Bundle extras = i.getExtras();
filename = extras.getString("audiofilename");
try {
mPlayer.setDataSource(filename);
} catch (IllegalArgumentException 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 {
mPlayer.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mPlayer.setOnCompletionListener(this);
mPlayer.setOnPreparedListener(this);
mPlayer.setOnSeekCompleteListener((OnSeekCompleteListener) this);
mPlayer.start();
TextView tv=(TextView) findViewById(R.id.file);
tv.setText("Playing "+filename);
seekbar = (SeekBar)findViewById(R.id.seekBar1);
mPlay = (Button)findViewById(R.id.play);
mPause = (Button)findViewById(R.id.pause);
seekbar.setProgress(0);
seekbar.setOnSeekBarChangeListener(this);
total = mPlayer.getDuration();
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
Log.d("Progres changed",""+progress);
if(fromUser){
mPlayer.seekTo(progress);
seekbar.setProgress(progress);
}
}
}
现在,无论我在进度条上点击哪里,歌曲都会从开头播放,而不是从我点击的位置开始播放。并且它不会根据歌曲移动。
请有人帮忙解决。