シークバーの非表示を停止する方法が見つかりません。曲が再生されるとすぐに、シークバーは 2 ~ 3 秒後に非表示になります。私はこれに本当に慣れていないので、この問題にどのようにアプローチできるかよくわかりません。曲の再生中に mediaController.show() をメソッドに入れてみましたが、うまくいきませんでした。以下のYoutubeチャンネルからこのコードを見つけました。コードは次のとおりです。
public class MainActivity extends ListActivity implements OnPreparedListener,
MediaController.MediaPlayerControl {
private static final String TAG = "AudioPlayer";
private ListView list;
private MainArrayAdapter adapter;
private MediaPlayer mediaPlayer;
private MediaController mediaController;
private String audioFile;
private Handler handler = new Handler();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
list = getListView();
mediaPlayer = new MediaPlayer();
mediaPlayer.setOnPreparedListener(this);
mediaController = new MediaController(this);
ArrayList<String> array_list_music = new ArrayList<String>();
array_list_music.add("Sammy Kaye And His Orchestra" + " ### "
+ "Minka (1941)" + " ### "
+ "http://incoming.jazz-on-line.com/a/mp3w/1941_149.mp3");
adapter = new MainArrayAdapter(MainActivity.this, array_list_music);
setListAdapter(adapter);
list.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
Object item = getListView().getItemAtPosition(arg2);
String the_list_item = item.toString();
Toast.makeText(MainActivity.this,
"You clicked " + the_list_item, Toast.LENGTH_LONG)
.show();
String[] aux = the_list_item.split(" ### ");
String url_to_play = aux[2];
playAudio(url_to_play);
}
});
}
private void playAudio(String url_to_play) {
//----- stop & reset
try {
mediaPlayer.stop();
mediaPlayer.reset();
} catch (Exception e) {
// TODO: handle exception
}
try {
mediaPlayer.setDataSource(url_to_play);
mediaPlayer.prepare();
mediaPlayer.start();
} catch (Exception e) {
Log.e(TAG, "Could not open file " + url_to_play + " for playback.",
e);
}
}
@Override
public boolean onTouchEvent(MotionEvent event) {
mediaController.show();
return true;
}
@Override
protected void onStop() {
super.onStop();
mediaController.hide();
mediaPlayer.stop();
mediaPlayer.release();
}
@Override
public boolean canPause() {
return true;
}
@Override
public boolean canSeekBackward() {
return true;
}
@Override
public boolean canSeekForward() {
return true;
}
@Override
public int getBufferPercentage() {
// TODO Auto-generated method stub
return 0;
}
@Override
public int getCurrentPosition() {
return mediaPlayer.getCurrentPosition();
}
@Override
public int getDuration() {
return mediaPlayer.getDuration();
}
@Override
public boolean isPlaying() {
return mediaPlayer.isPlaying();
}
@Override
public void pause() {
mediaPlayer.pause();
}
@Override
public void seekTo(int arg0) {
mediaPlayer.seekTo(arg0);
}
@Override
public void start() {
mediaPlayer.start();
}
public void onPrepared(MediaPlayer mediaPlayer) {
Log.d(TAG, "onPrepared");
mediaController.setMediaPlayer(this);
mediaController.setAnchorView(list);
mediaController.show();
handler.post(new Runnable() {
public void run() {
mediaController.setEnabled(true);
mediaController.show();
}
});
}
}