从Listview中的URI播放音频,但Seekbar未在Android Listview项中更新 我正在播放Uri的音频,它工作正常 单击每个Listview项目中的按钮
问题:音频正在Listview中播放,但Seekbar仍没有移动(更新) 编辑:1 1.音频在每个Listview项目中完美播放,但Seekbar不工作(不更新) 请帮我解决这个问题 我的列表视图阵列适配器类: 适配器类从Listview中的URI播放音频,但Seekbar未在Android Listview项中更新 我正在播放Uri的音频,它工作正常 单击每个Listview项目中的按钮,android,listview,audio,android-mediaplayer,Android,Listview,Audio,Android Mediaplayer,问题:音频正在Listview中播放,但Seekbar仍没有移动(更新) 编辑:1 1.音频在每个Listview项目中完美播放,但Seekbar不工作(不更新) 请帮我解决这个问题 我的列表视图阵列适配器类: 适配器类 private static final int UPDATE_FREQUENCY = 500; int progress=0; public View getView(final int position, View view, ViewGro
private static final int UPDATE_FREQUENCY = 500;
int progress=0;
public View getView(final int position, View view, ViewGroup parent) {
LayoutInflater inflater = context.getLayoutInflater();
View rowView = inflater.inflate(R.layout.audio_listview, null, true);
ListenAUdioButton = (Button) rowView.findViewById(R.id.ListenAudiobuttonxml);
seek_bar_view = (SeekBar) rowView.findViewById(R.id.seek_bar);
ListenAUdioButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// text_shown.setText("Playing...");
try {
try {
// get Internet status
isInternetPresent = cd1.isConnectingToInternet();
// check for Internet status
if (isInternetPresent) {
if (!itemname3_AUDIO_FILE[position].equals("") || !itemname3_AUDIO_FILE[position].equals("null")) {
System.out.println(" AUDIO FILE :-)" + itemname3_AUDIO_FILE[position]);
player = new MediaPlayer();
player.setAudioStreamType(AudioManager.STREAM_MUSIC);
player.setDataSource(context, Uri.parse(itemname3_AUDIO_FILE[position]));
player.prepareAsync();
player.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
try {
mp.start();
seek_bar_view.setMax(player.getDuration());
updatePosition();
} catch (Exception e) {
e.printStackTrace();
}
}
});
player.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp) {
stopPlay();
}
});
MediaPlayer.OnErrorListener onError = new MediaPlayer.OnErrorListener() {
@Override
public boolean onError(MediaPlayer mp, int what, int extra) {
// returning false will call the OnCompletionListener
return false;
}
};
} else {
Toast.makeText(getContext(), "Audio Not Found..!", Toast.LENGTH_SHORT).show();
}
} else {
Toast.makeText(getContext(), "Please Check Your Internet Connection..!", Toast.LENGTH_SHORT).show();
}
} catch (Exception e) {
e.printStackTrace();
Toast.makeText(getContext(), "Audio Not Found..!", Toast.LENGTH_SHORT).show();
}
} catch (Exception e) {
e.printStackTrace();
}
}
});
return rowView;
}
private void stopPlay() {
player.stop();
player.reset();
// playButton.setImageResource(android.R.drawable.ic_media_play);
handler.removeCallbacks(updatePositionRunnable);
seek_bar_view.setProgress(0);
// isStarted = false;
}
private final Handler handler = new Handler();
private final Runnable updatePositionRunnable = new Runnable() {
public void run() {
updatePosition();
}
};
private void updatePosition()
{
handler.removeCallbacks(updatePositionRunnable);
seek_bar_view.setProgress(progress);
progress=getProgressPercentage(player.getCurrentPosition(),player.getDuration();
notifyDataSetChanged();
handler.postDelayed(updatePositionRunnable, UPDATE_FREQUENCY);
}
见此:
seek_bar_view.setProgress(player.getCurrentPosition());
这里player.getCurrentPosition()以毫秒为单位返回时间,您需要将其转换为int,然后将进度设置为seekBar
试试这个:
public static int getProgressPercentage(long currentDuration, long totalDuration){
Double percentage = (double) 0;
long currentSeconds = (int) (currentDuration / 1000);
long totalSeconds = (int) (totalDuration / 1000);
// calculating percentage
percentage =(((double)currentSeconds)/totalSeconds)*100;
// return percentage
return percentage.intValue();
}
现在获取SeekBar的百分比,如下所示:
int currentProgress=getProgressPercentage(player.getCurrentPosition(), player.getDuration());
seek_bar_view.setProgress(currentProgress);
编辑:
对于您的特定情况,在ListView项目中:
每次更改seekbar的位置时,都需要通知适配器。
为此,最简单的方法是在用于设置适配器的POJO类中获取一个变量
在你的POJO班里
int progress=0;
在适配器中,设置seekbar进度
seekbar.setProgress(progress);
在适配器中,更改progress和notifyadapter的值
progress=getProgressPercentage(player.getCurrentPosition(), player.getDuration());
notifyDataSetChanged()
//重新编辑:
seekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress,boolean fromUser) {
// TODO Auto-generated method stub
notifyDataSetChanged();
}
});
您需要每秒更新seekbar位置(值) 要设置seekbar最大值
seek_bar_view.setMax((int) player.getDuration());
并每秒钟更新一次以显示进度
Handler mHandler = new Handler();
runOnUiThread(new Runnable() {
@Override
public void run() {
seek_bar_view.setProgress((int) player.getCurrentPosition());
}
mHandler.postDelayed(this,1000);
}
);
对不起,我现在无法测试您的代码。请参阅本教程,。这肯定会有帮助。在Listview中仍然无法正常工作,但Seekbar仍然保持不变。我指的是当前代码,即您使用POJO类解决方案尝试的代码。请检查我的updatePosition方法,我没有任何POJOclass@Kumar,问题在于适配器需要通知它正在观察的数据已更改。您没有使用POJO类,因此请尝试在我的代码中添加seekbar change listner并在其中调用notifyDataSetChanged(),我必须在其中进行此更改