我有一个搜索栏,需要从服务中更新。但是光标根本不动。这是代码(您可以看到很多布局,因为我只放了您需要的代码,但这些布局中还有其他视图对象):
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="top"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_alignParentBottom="true"
android:layout_marginTop="-80dp"
android:gravity="center_horizontal"
android:orientation="vertical" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_horizontal" >
<SeekBar
android:id="@+id/seekBarTime"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical" />
</LinearLayout>
</LinearLayout>
</RelativeLayout>
爪哇
public class MediaPlayerService extends Service implements Runnable {
private MediaPlayer mediaPlayer = null;
private SeekBar seekBarTime;
private Handler handler;
private Runnable runnable;
@Override
public void onCreate() {
//SET SEEKBAR
LayoutInflater inflater = ( LayoutInflater ) getSystemService( LAYOUT_INFLATER_SERVICE );
View layout = inflater.inflate( R.layout.play_song , null);
seekBarTime = (SeekBar) layout.findViewById(R.id.seekBarTime);
seekBarTime.setOnSeekBarChangeListener(this);
handler = new Handler();
runnable = this;
handler.post(runnable);
}
// Seekbar
public void run() {
if(mediaPlayer.isPlaying()) {
int currentPosition = 0;
int total = mediaPlayer.getDuration();
seekBarTime.setMax(total);
currentPosition = mediaPlayer.getCurrentPosition();
Log.w("disgustingapps", currentPosition + " / " + total);
seekBarTime.setProgress(currentPosition);
}
handler.postDelayed(runnable, 1000);
}
}
logcat 向我保证 currentPosition 和 total 不为空。然而什么也没发生。你能帮助我吗?提前致谢