如何在Android中一次录制多个音频曲目
我一直在开发一个应用程序，该应用程序需要能够同时从麦克风录制两个不同的文件，但我不断收到非法状态异常，我的应用程序崩溃 当我一次只录制一条时，代码运行良好，但我希望能够同时录制这两条代码 活动代码如何在Android中一次录制多个音频曲目,android,audio,illegalstateexception,mediarecorder,Android,Audio,Illegalstateexception,Mediarecorder,我一直在开发一个应用程序，该应用程序需要能够同时从麦克风录制两个不同的文件，但我不断收到非法状态异常，我的应用程序崩溃 当我一次只录制一条时，代码运行良好，但我希望能够同时录制这两条代码 活动代码 rec_sound_1 = (Button) findViewById(R.id.rec_sound_1); rec_sound_1.animate().setDuration(105); rec_sound_1.setOnTouchListener(new View.
rec_sound_1 = (Button) findViewById(R.id.rec_sound_1);
rec_sound_1.animate().setDuration(105);
rec_sound_1.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View arg0, MotionEvent arg1) {
if (arg1.getAction() == MotionEvent.ACTION_DOWN) {
//begin recording
try {
RecordingHandler.beginRecording1(SOUND_ONE);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
rec_sound_1.animate().setInterpolator(sDecelerator)
.scaleX(.85f).scaleY(.85f);
} else if (arg1.getAction() == MotionEvent.ACTION_UP) {
rec_sound_1.animate().setInterpolator(sOvershooter)
.scaleX(1f).scaleY(1f);
//stop recording
RecordingHandler.stopRecording1();
}
return false;
}
});
rec_sound_2 = (Button) findViewById(R.id.rec_sound_2);
rec_sound_2.animate().setDuration(105);
rec_sound_2.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View arg0, MotionEvent arg1) {
if (arg1.getAction() == MotionEvent.ACTION_DOWN) {
//begin recording
try {
RecordingHandler.beginRecording2(SOUND_TWO);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
rec_sound_2.animate().setInterpolator(sDecelerator)
.scaleX(.85f).scaleY(.85f);
} else if (arg1.getAction() == MotionEvent.ACTION_UP) {
rec_sound_2.animate().setInterpolator(sOvershooter)
.scaleX(1f).scaleY(1f);
//stop recording
RecordingHandler.stopRecording2();
}
return false;
}
});
rec_sound_3 = (Button) findViewById(R.id.rec_sound_3);
rec_sound_3.animate().setDuration(105);
rec_sound_3.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View arg0, MotionEvent arg1) {
if (arg1.getAction() == MotionEvent.ACTION_DOWN) {
//begin recording
try {
RecordingHandler.beginRecording3(SOUND_THREE);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
rec_sound_3.animate().setInterpolator(sDecelerator)
.scaleX(.85f).scaleY(.85f);
} else if (arg1.getAction() == MotionEvent.ACTION_UP) {
rec_sound_3.animate().setInterpolator(sOvershooter)
.scaleX(1f).scaleY(1f);
//stop recording
RecordingHandler.stopRecording3();
}
return false;
}
});
rec_sound_4 = (Button) findViewById(R.id.rec_sound_4);
rec_sound_4.animate().setDuration(105);
rec_sound_4.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View arg0, MotionEvent arg1) {
if (arg1.getAction() == MotionEvent.ACTION_DOWN) {
//begin recording
try {
RecordingHandler.beginRecording4(SOUND_FOUR);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
rec_sound_4.animate().setInterpolator(sDecelerator)
.scaleX(.85f).scaleY(.85f);
} else if (arg1.getAction() == MotionEvent.ACTION_UP) {
rec_sound_4.animate().setInterpolator(sOvershooter)
.scaleX(1f).scaleY(1f);
//stop recording
RecordingHandler.stopRecording4();
}
return false;
}
});
public class RecordingHandler {
private static MediaRecorder recorder1;
private static MediaRecorder recorder2;
private static MediaRecorder recorder3;
private static MediaRecorder recorder4;
static void beginRecording1(String output) throws Exception {
ditchMediaRecorder1();
File outFile = new File(output);
if(outFile.exists())
outFile.delete();
recorder1 = new MediaRecorder();
recorder1.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder1.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
recorder1.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_WB);
recorder1.setAudioEncodingBitRate(16);
recorder1.setAudioSamplingRate(44100);
recorder1.setOutputFile(output);
recorder1.prepare();
recorder1.start();
}
private static void ditchMediaRecorder1() {
//if we have the recorder, release it
if(recorder1 != null)
recorder1.release(); }
static void stopRecording1() {
if(recorder1 != null)
recorder1.stop(); }
static void beginRecording2(String output) throws Exception {
ditchMediaRecorder2();
File outFile = new File(output);
if(outFile.exists())
outFile.delete();
recorder2 = new MediaRecorder();
recorder2.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder2.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
recorder2.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_WB);
recorder2.setAudioEncodingBitRate(16);
recorder2.setAudioSamplingRate(44100);
recorder2.setOutputFile(output);
recorder2.prepare();
recorder2.start();
}
private static void ditchMediaRecorder2() {
//if we have the recorder, release it
if(recorder2 != null)
recorder2.release(); }
static void stopRecording2() {
if(recorder2 != null)
recorder2.stop(); }
static void beginRecording3(String output) throws Exception {
ditchMediaRecorder3();
File outFile = new File(output);
if(outFile.exists())
outFile.delete();
recorder3 = new MediaRecorder();
recorder3.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder3.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
recorder3.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_WB);
recorder3.setAudioEncodingBitRate(16);
recorder3.setAudioSamplingRate(44100);
recorder3.setOutputFile(output);
recorder3.prepare();
recorder3.start();
}
private static void ditchMediaRecorder3() {
//if we have the recorder, release it
if(recorder3 != null)
recorder3.release(); }
static void stopRecording3() {
if(recorder3 != null)
recorder3.stop(); }
static void beginRecording4(String output) throws Exception {
ditchMediaRecorder4();
File outFile = new File(output);
if(outFile.exists())
outFile.delete();
recorder4 = new MediaRecorder();
recorder4.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder4.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
recorder4.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_WB);
recorder4.setAudioEncodingBitRate(16);
recorder4.setAudioSamplingRate(44100);
recorder4.setOutputFile(output);
recorder4.prepare();
recorder4.start();
}
private static void ditchMediaRecorder4() {
//if we have the recorder, release it
if(recorder4 != null)
recorder4.release(); }
static void stopRecording4() {
if(recorder4 != null)
recorder4.stop(); }
04-14 20:34:01.676: E/MediaRecorder(21510): stop called in an invalid state: 0
04-14 20:34:01.676: E/InputEventReceiver(21510): Exception dispatching input event.
04-14 20:34:01.676: E/MessageQueue-JNI(21510): Exception in MessageQueue callback: handleReceiveCallback
04-14 20:34:01.686: E/MessageQueue-JNI(21510): java.lang.IllegalStateException
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.media.MediaRecorder.stop(Native Method)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at com.appulse.audiomate.RecordingHandler.stopRecording2(RecordingHandler.java:62)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at com.appulse.audiomate.SoundRecord$2.onTouch(SoundRecord.java:101)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.View.dispatchTouchEvent(View.java:7701)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2238)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2068)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1515)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.app.Activity.dispatchTouchEvent(Activity.java:2458)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2016)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.View.dispatchPointerEvent(View.java:7886)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:3954)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:3833)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3399)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3449)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3418)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3525)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3426)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3582)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3399)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3449)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3418)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3426)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3399)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:5602)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:5582)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:5553)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:5682)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:185)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.os.MessageQueue.nativePollOnce(Native Method)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.os.MessageQueue.next(MessageQueue.java:138)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.os.Looper.loop(Looper.java:123)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at android.app.ActivityThread.main(ActivityThread.java:5017)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at java.lang.reflect.Method.invokeNative(Native Method)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at java.lang.reflect.Method.invoke(Method.java:515)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
04-14 20:34:01.686: E/MessageQueue-JNI(21510): at dalvik.system.NativeStart.main(Native Method)
大多数Android设备在任何给定时间都不允许多个录制活动。您可能需要在应用程序中实现流拆分器（即，使用单个
录音