嘗試在setOnTouchListener上錄製音頻時，應用程序崩潰

Question

此問題已被問到，但無法找到我的解決方案。

我在做什麼，MotionEvent.ACTION_DOWN的OnTouchListener我開始錄製音頻，並在MotionEvent.ACTION_UP我停止錄音。

長時間觸摸該圖標時，它工作正常，但onclick應用程序崩潰。 這裏是我的

audio.setOnClickListener(new View.OnClickListener(){ 
     @Override 
     public void onClick(View v) { 
      Toast.makeText(Chat.this, "You Have to hold the Button for audio recording.", Toast.LENGTH_LONG).show(); 
     } 
    }); 

audio.setOnTouchListener(new View.OnTouchListener() { 
     @Override 
     public boolean onTouch(View v, MotionEvent event) { 
      if (event.getAction() == MotionEvent.ACTION_DOWN) { 
       MediaRecorderReady(); 
       try { 
        mediaRecorder.prepare(); 
        mediaRecorder.start(); 
       } catch (IllegalStateException e) { 
        e.printStackTrace(); 
       } catch (IOException e) { 
        e.printStackTrace(); 
       } 

      } else if (event.getAction() == MotionEvent.ACTION_UP) { 
       if (mediaRecorder != null) { 
        mediaRecorder.stop(); 
       } 
      } 
      return true; 
     } 
    }); 

public void MediaRecorderReady() { 
    mediaRecorder = new MediaRecorder(); 
    mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); 
    mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); 
    mediaRecorder.setAudioEncoder(MediaRecorder.OutputFormat.AMR_NB); 
    mediaRecorder.setOutputFile(AudioSavePathInDevice); 
} 

這裏是我的問題，當我點擊該按鈕的應用程序崩潰

Answer 1

檢查這個答案 Android mediarecorder stop failed 也閱讀mediaRecorder及其狀態的官方文檔。 https://developer.android.com/reference/android/media/MediaRecorder.html 由於您停止媒體播放器和媒體播放器未處於錄製狀態而導致崩潰。 未處於錄製狀態時無法直接呼叫停止。

try { 
    mRecorder.stop(); 
    } 
    catch(RuntimeException e) { 
    } 
     finally { 
       mRecorder.release(); 
       mRecorder = null; 
    } 

Answer 2

做像下面。

private MediaRecorder myAudioRecorder; 
    private MediaPlayer mPlayer; 

audio.setOnTouchListener(new View.OnTouchListener() { 
     @Override 
     public boolean onTouch(View v, MotionEvent event) { 
      if (event.getAction() == MotionEvent.ACTION_DOWN) { 
       initializeRecorder();     
       recordFile(); 

      } else if (event.getAction() == MotionEvent.ACTION_UP) { 
       stopRecording(); 
      } 
      return true; 
     } 
    }); 

private void initializeRecorder() { 
     File cacheDir = new File(Utils.SD_CARD, Utils.RECORDING_CACHE); 
     if (!(cacheDir.exists())) { 
      cacheDir.mkdirs(); 
     } 

     outputFile = cacheDir + "/" + String.format("%s.m4a", System.currentTimeMillis()); 

     mPlayer = new MediaPlayer(); 
     myAudioRecorder = new MediaRecorder(); 
     myAudioRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); 

     //original 
     myAudioRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4); 
     myAudioRecorder.setAudioEncoder(MediaRecorder.OutputFormat.AMR_NB); 
     myAudioRecorder.setOutputFile(outputFile); 

    } 

private void recordFile() { 
     try { 
      myAudioRecorder.prepare(); 
      myAudioRecorder.start(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 
    } 

private void stopRecording(){ 
    myAudioRecorder.stop(); 
    myAudioRecorder.release(); 
}