显示播放时间，播放剩余时间

Question

我使用下面的代码播放录制的音频文件，它工作正常。我有一个显示比赛进程的搜索栏。我有两个静态文本称为开始和结束。我需要在开始文本中显示播放的持续时间（00.00到最大持续时间），并将时间从最大持续时间递减到00.00。我需要显示进展时间，剩余时间...任何建议..

 
private void playAudio() { 
     // TODO Auto-generated method stub 
     start.setVisibility(View.VISIBLE); 
     end.setVisibility(View.VISIBLE); 
     Context context = getApplicationContext(); 
     CharSequence text1 = "Your audio will play"; 
     int duration = Toast.LENGTH_SHORT; 
     Toast toast1 = Toast.makeText(context, text1, duration); 
     toast1.setGravity(Gravity.CENTER_VERTICAL, 0, 0); 
     toast1.show();
 

String newFolderName = "/ComAudioRecorder"; 
    String extstoredir = Environment.getExternalStorageDirectory() 
      .toString(); 
    String filename = "/combinedrecaudio.wav"; 
    String path1 = extstoredir + newFolderName + filename; 
    Log.d("path1", path1); 
    /* 
    * String path=path2; Log.d("path",path); 
    */ 
    mPlayer = new MediaPlayer(); 
    try { 
     mPlayer.setDataSource(path1); 
     mPlayer.prepare();   
     mPlayer.start(); 
    } 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(); 
    } 
    mSeekBar.setMax(mPlayer.getDuration()); 
    new Thread(new Runnable() { 

     @Override 
     public void run() { 
      // TODO Auto-generated method stub 
      while (mPlayer != null 
        && mPlayer.getCurrentPosition() < mPlayer.getDuration()) { 
       Log.d("Indide Run Method",Integer.toString(mPlayer.getCurrentPosition())); 
       try { 
        Thread.sleep(100); 
       } catch (InterruptedException e) { 
        // TODO Auto-generated catch block 
        e.printStackTrace(); 
       } 
       mSeekBar.setProgress(mPlayer.getCurrentPosition()); 
     start.setText(Long.toString(startTime));    
       //end.setText(Double.toString()); 
      }   
     } 

    }).start(); 
    pos=mPlayer.getCurrentPosition(); 
    mSeekBar.setProgress(mPlayer.getCurrentPosition()); 
    // mPlay.setVisibility(View.INVISIBLE); 
    pauseRecord.setVisibility(View.INVISIBLE); 
    resumeRec.setVisibility(View.VISIBLE); 
    /*start.setText(Double.toString(starttext)); 
    starttext=starttext+00.01;*/ 
    // start.setText((int) (mPlayer.getCurrentPosition()/100000.0)); 
    // end.setText(currentTime); 

    // start.setText(); 
    // mDelete.setVisibility(View.INVISIBLE); 

} 

Answer 1

您无法更新线程中的用户界面，您可以将它们发布到Runnable。

在运行方法（）中输入以下代码。

mHandler.post(updateUI); 

然后使用处理程序来更新

private final Runnable updateUI= new Runnable() 
     { 
      public void run() 
      { 
       try 
       { 
        //update ur ui here  
         start.setText((mPlayer.getCurrentPosition()/mPlayer.getDuration())*100); ‌​ end.setText(mPlayer.getDuration()-mPlayer.getCurrentPosition()) 

       } 
       catch (Exception e) 
       { 
        e.printStackTrace(); 
       } 
      } 
     }; 
     private final Handler mHandler = new Handler(); 

Answer 2

为每1秒，你可以用公式更新进度条(mPlayer.getCurrentPosition()/mPlayer.getDuration)*100;

同样可以得到剩余时间通过使用mPlayer.getDuration-mPlayer.getCurrentPosition();

你可以在onPreparedListener让您的音频文件的getDuration（）...

得到了成功的让我知道。