Android工作室。仅使用 onTouchListener 单击 button/imageview 时应用程序崩溃

Question

您好，我正在开发一个可以跟踪每个用户位置的应用程序，作为其中的一部分，该应用程序可以在将语音消息发送到 mysql 服务器之前录制语音消息。该应用程序很好，当用户保持记录 button/imageview 时运行。但是当一些用户只点击 button/imageview 而没有按住它来录制他们的声音时会崩溃。

如何防止此应用崩溃？如果用户只单击按钮并发出警告但没有使应用程序崩溃，我该如何处理。谢谢

mFileName = Environment.getExternalStorageDirectory() + "/"+user_id+".3gp";
        recordBtn.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {


                if(checkPermissionFromDevice()){

                    if(event.getAction() == MotionEvent.ACTION_DOWN){
                        startRecording();
                        recordLabel.setText("Recording Started...");
                    }else if(event.getAction() == MotionEvent.ACTION_UP){
                        stopRecording();
                        recordLabel.setText("Recording Stoped...");
                    }

                }
                else{
                    requestPermission();
                }
                return false;
            }
        });


    }

Logcat:

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: www.teamruby.com.capstoneproject, PID: 3679
    java.lang.RuntimeException: stop failed.
        at android.media.MediaRecorder.stop(Native Method)
        at www.teamruby.com.capstoneproject.INeedHelp.stopRecording(INeedHelp.java:383)
        at www.teamruby.com.capstoneproject.INeedHelp.access0(INeedHelp.java:69)
        at www.teamruby.com.capstoneproject.INeedHelp.onTouch(INeedHelp.java:194)
        at android.view.View.dispatchTouchEvent(View.java:9290)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2553)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2553)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2553)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2553)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2553)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2553)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2553)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2553)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2553)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2553)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2553)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
        at com.android.internal.policy.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2403)
        at com.android.internal.policy.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1737)
        at android.app.Activity.dispatchTouchEvent(Activity.java:2765)
        at android.support.v7.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:68)
        at com.android.internal.policy.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2364)
        at android.view.View.dispatchPointerEvent(View.java:9514)
        at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:4230)
        at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:4096)
        at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3642)
        at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3695)
        at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3661)
        at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3787)
        at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3669)
        at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3844)
        at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3642)
        at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3695)
        at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3661)
        at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3669)
        at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3642)
        at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:5922)
        at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:5896)
        at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:5857)
        at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:6025)
        at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:185)
        at android.os.MessageQueue.nativePollOnce(Native Method)
        at android.os.MessageQueue.next(Me

Answer 1

我认为错误确实发生了，因为用户立即开始录制并停止得太快所以媒体录制器可能在它开始之前就停止了，因为它说 MediaRecorder.stop 失败。现在一个简单的解决方案是将它包装在一个 try catch 中，如果发生错误，则显示你的警告 toast，如下所示：

try {
    stopRecording();
} catch(RunTimeException e) {
    e.printstack();
    //your toast
}

Android工作室。仅使用 onTouchListener 单击 button/imageview 时应用程序崩溃

Android Studio. App crashes when only clicking button/imageview with onTouchListener

java

android

mediarecorder