我正在制作一个记录未压缩（波形格式）音频的应用程序。我正在使用this class实际录制音频。目前，我的应用程序可以正常录制（我可以播放文件），但是，当我单击按钮停止录制时，该应用程序挂起10秒钟左右，没有日志输出或任何生命迹象。终于解决了，将大量错误转储到日志中，更新了UI等。我正在使用AsyncTasks尝试避免这种情况，但是它不起作用。这是我的代码：
//Called on clicks of the record button. rar is the instance of RehearsalAudioRecorder
private OnClickListener RecordListener = new OnClickListener(){
@Override
public void onClick(View v) {
Log.d("Record","Click");
if (recording){
new stopRecordingTask().execute(rar,null,null);
startStop.setText("Record");
statusBar.setText("Recording Finished, ready to Encode");
}else{
recording = true;
new startRecordingTask().execute(rar,null,null);
startStop.setText("Stop");
statusBar.setText("Recording Started");
}
}
};
private class startRecordingTask extends AsyncTask<RehearsalAudioRecorder,Void,Void>{
@Override
protected Void doInBackground(RehearsalAudioRecorder... rs) {
RehearsalAudioRecorder r = rs[0];
r.setOutputFile("/sdcard/rarOut.wav");
r.prepare();
r.start();
return null;
}
}
private class stopRecordingTask extends AsyncTask<RehearsalAudioRecorder,Void,Void>{
@Override
protected Void doInBackground(RehearsalAudioRecorder... rs) {
RehearsalAudioRecorder r = rs[0];
r.stop();
r.reset();
return null;
}
}
在Logcat中，我总是得到这样的输出，这让我很困惑。我不知道是什么原因引起的（我正在记录RehearsalAudioRecorder类，并且通过单击按钮可以正确启动/停止它。此输出发生在按钮单击和正确的stop（）方法调用的日志输出之后）
12-19 11:59:11.172: ERROR/AudioRecord-JNI(22662): Unable to retrieve AudioRecord object, can't record
12-19 11:59:11.172: ERROR/uk.ac.cam.tfmw2.steg.RehearsalAudioRecorder(22662): Error occured in updateListener, recording is aborted
12-19 11:59:11.172: ERROR/uk.ac.cam.tfmw2.steg.RehearsalAudioRecorder(22662): stop() called on illegal state: STOPPED
12-19 11:59:11.172: ERROR/AudioRecord-JNI(22662): Unable to retrieve AudioRecord object, can't record
12-19 11:59:11.172: ERROR/uk.ac.cam.tfmw2.steg.RehearsalAudioRecorder(22662): Error occured in updateListener, recording is aborted
12-19 11:59:11.172: ERROR/uk.ac.cam.tfmw2.steg.RehearsalAudioRecorder(22662): stop() called on illegal state: ERROR
12-19 11:59:11.172: ERROR/AudioRecord-JNI(22662): Unable to retrieve AudioRecord object, can't record
12-19 11:59:11.172: ERROR/uk.ac.cam.tfmw2.steg.RehearsalAudioRecorder(22662): Error occured in updateListener, recording is aborted
12-19 11:59:11.172: ERROR/uk.ac.cam.tfmw2.steg.RehearsalAudioRecorder(22662): stop() called on illegal state: ERROR
... 10 or more times
我整天都在摆弄，但我什么都没走，任何输入将不胜感激。
更新资料
我已将AsyncTasks替换为Threads，但仍然无法正常工作，当我单击record时，该应用程序完全挂起，尽管Log指示主线程中没有任何事件。仍然完全陷入困境。
最佳答案
您已授予应用程序RECORD_AUDIO权限？
您还应该更改RehearsalAudioRecorder中的catch块以记录实际的异常，而不是仅记录现在记录的“ updateListener中发生错误，记录被中止”。