MediaRecorder 崩溃答案

【问题标题】：MediaRecorder CrashingMediaRecorder 崩溃
【发布时间】：2020-07-26 19:16:55
【问题描述】：

当我将输出文件设置为自定义目录时，MediaRecorder 使我的应用程序崩溃。如果我将其设置为

Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MUSIC) ，完全没问题。

我的代码：

                    recorder = new MediaRecorder();
                    recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
                    recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
                    recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
                    recorder.setAudioEncodingBitRate(16*44100);
                    recorder.setAudioSamplingRate(44100);
                    Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MUSIC)
                    file = new File(Environment.getExternalStorageDirectory().getAbsolutePath()+"/My App/Voice/", new Date().getTime() + ".3gp");
                    recorder.setOutputFile(file.getAbsoluteFile());

我确保我的麦克风以及我在存储空间中的读写权限是允许的。任何帮助将不胜感激。

编辑：

错误日志：

E/MediaRecorder: stop called in an invalid state: 4
E/InputEventReceiver: Exception dispatching input event.
E/MessageQueue-JNI: Exception in MessageQueue callback: handleReceiveCallback
E/MessageQueue-JNI: java.lang.IllegalStateException
        at android.media.MediaRecorder._stop(Native Method)
        at android.media.MediaRecorder.stop(MediaRecorder.java:1378)
        at com.example.criminalscurse.Home$6.onTouch(Home.java:328)
        at android.view.View.dispatchTouchEvent(View.java:13480)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3222)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2904)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3222)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2904)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3222)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2904)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3222)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2904)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3222)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2904)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3222)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2904)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3222)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2904)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3222)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2904)
        at com.android.internal.policy.DecorView.superDispatchTouchEvent(DecorView.java:697)
        at com.android.internal.policy.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1879)
        at android.app.Activity.dispatchTouchEvent(Activity.java:3487)
        at androidx.appcompat.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:69)
        at com.android.internal.policy.DecorView.dispatchTouchEvent(DecorView.java:655)
        at android.view.View.dispatchPointerEvent(View.java:13732)
        at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:6131)
        at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:5909)
        at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5358)
        at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5411)
        at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5377)
        at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:5536)
        at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5385)
        at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:5593)
        at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5358)
        at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5411)
        at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5377)
        at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5385)
        at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5358)
        at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:8420)
        at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:8353)
        at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:8306)
        at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:8535)
        at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:198)
        at android.os.MessageQueue.nativePollOnce(Native Method)
        at android.os.MessageQueue.next(MessageQueue.java:326)
        at android.os.Looper.loop(Looper.java:181)
        at android.app.ActivityThread.main(ActivityThread.java:7050)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:965)
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.criminalscurse, PID: 5259
    java.lang.IllegalStateException
        at android.media.MediaRecorder._stop(Native Method)
        at android.media.MediaRecorder.stop(MediaRecorder.java:1378)
        at com.example.criminalscurse.Home$6.onTouch(Home.java:328)
        at android.view.View.dispatchTouchEvent(View.java:13480)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3222)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2904)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3222)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2904)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3222)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2904)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3222)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2904)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3222)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2904)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3222)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2904)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3222)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2904)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3222)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2904)
        at com.android.internal.policy.DecorView.superDispatchTouchEvent(DecorView.java:697)
        at com.android.internal.policy.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1879)
        at android.app.Activity.dispatchTouchEvent(Activity.java:3487)
        at androidx.appcompat.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:69)
        at com.android.internal.policy.DecorView.dispatchTouchEvent(DecorView.java:655)
        at android.view.View.dispatchPointerEvent(View.java:13732)
        at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:6131)
        at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:5909)
        at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5358)
        at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5411)
        at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5377)
        at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:5536)
        at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5385)
        at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:5593)
        at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5358)
        at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5411)
        at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5377)
        at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5385)
        at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5358)
        at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:8420)
        at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:8353)
        at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:8306)
        at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:8535)
        at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:198)
        at android.os.MessageQueue.nativePollOnce(Native Method)
        at android.os.MessageQueue.next(MessageQueue.java:326)
        at android.os.Looper.loop(Looper.java:181)
        at android.app.ActivityThread.main(ActivityThread.java:7050)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:965)

【问题讨论】：

发布错误...
我认为错误在MediaRecorder.stop()。您确定问题出在存储路径上吗？
是的，正如我将存储路径设置为 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MUSIC) 时所说的，效果很好

标签： java android mediarecorder

【解决方案1】：

试试这是否有帮助

                    recorder = new MediaRecorder();
                    recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
                    recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
                    recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
                    recorder.setAudioEncodingBitRate(16*44100);
                    recorder.setAudioSamplingRate(44100);
                    file = new File(Environment.getExternalStorageDirectory(),"MyApp"+File.seperator+"Voice", new Date().getTime() + ".3gp");

                    
                    recorder.setOutputFile(file.getAbsoluteFile());

【讨论】：

问题是我不希望它在 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MUSIC) 中。我希望文件位于 Environment.getExternalStorageDirectory().getAbsolutePath()+"/My App/Voice/", new Date().getTime() + ".3gp"