我的应用程序崩溃了致命异常无法添加窗口

Question

我对 Android 开发非常陌生，我创建了这个问答游戏。我的问题是应用程序在打开几分钟后随机崩溃。崩溃是随机发生的，所以我无法弄清楚导致崩溃的原因。以下是应用程序崩溃时的 logcat 错误代码

11-16 18:39:10.573 19023-19023/com.noxeternal.quizgame E/AndroidRuntime: FATAL EXCEPTION: main
                                                                     Process: com.noxeternal.quizgame, PID: 19023
                                                                     android.view.WindowManager$BadTokenException: Unable to add window -- token android.os.BinderProxy@d70d3e4 is not valid; is your activity running?
                                                                         at android.view.ViewRootImpl.setView(ViewRootImpl.java:679)
                                                                         at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:342)
                                                                         at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:94)
                                                                         at android.app.Dialog.show(Dialog.java:322)
                                                                         at com.noxeternal.quizgame.MainActivity.gameOver(MainActivity.java:287)
                                                                         at com.noxeternal.quizgame.MainActivity.access$300(MainActivity.java:19)
                                                                         at com.noxeternal.quizgame.MainActivity$9.onFinish(MainActivity.java:307)
                                                                         at android.os.CountDownTimer$1.handleMessage(CountDownTimer.java:127)
                                                                         at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                         at android.os.Looper.loop(Looper.java:154)
                                                                         at android.app.ActivityThread.main(ActivityThread.java:6176)
                                                                         at java.lang.reflect.Method.invoke(Native Method)
                                                                         at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:888)
                                                                         at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:778)

这里是logcat中提到的代码。

private void gameOver(){
    AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(MainActivity.this);
    alertDialogBuilder
            .setMessage("Game over! Your score is " + mScore + " points.")
            .setCancelable(false)
            .setPositiveButton("NEW GAME",
                    new DialogInterface.OnClickListener(){
                        @Override
                        public void onClick(DialogInterface dialogInterface, int i){
                            finish();
                            startActivity(new Intent(getApplicationContext(),MainActivity.class));
                        }
                    })
            .setNegativeButton("Exit",
                    new DialogInterface.OnClickListener(){
                        @Override
                        public void onClick(DialogInterface dialogInterface, int i){
                            Intent intent = new Intent(MainActivity.this, MainMenu.class);
                            startActivity(intent);
                            finish();
                        }
                    });
    AlertDialog alertDialog = alertDialogBuilder.create();
    alertDialog.show();
}

private void startTimer(){
    long millisInFuture = 60000;
    long countDownInterval = 1000;

    timer.setText("Time remaining: " + timer);
    countDownTimer = new CountDownTimer(millisInFuture, countDownInterval) {
        @Override
        public void onTick(long millisUntilFinished) {
            if(isPaused){
                cancel();
            } else {
                timer.setText("Time remaining: " + millisUntilFinished / 1000);
                remainingTime = millisUntilFinished;
            }
        }
        @Override
        public void onFinish() {
            gameOver();
        }
    };
    countDownTimer.start();
}

谢谢！

Answer 1

当您查看错误时，您可能会从给出错误的行中找到一些“链接”，您可以单击查找。在您的情况下，错误出现在：

第 287 行的 MainActivity.class：MainActivity.java:287

第 19 行的 MainActivity.class：MainActivity.java:19

第 307 行的 MainActivity.class：MainActivity.java:307

我认为这可能有助于识别错误。

Answer 2

尝试修改这段代码：

 @Override
 public void onClick(DialogInterface dialogInterface, int i){
     finish();
     startActivity(new Intent(getApplicationContext(),MainActivity.class));
 }

到这里：

@Override
public void onClick(DialogInterface dialogInterface, int i) {         
     startActivity(new Intent(getApplicationContext(),MainActivity.class));
     finish();
}