Question

我正在开发一个Android项目。我BaseActivity扩展了AppCompatActivity，而我的另一个活动StartActivity扩展了BaseActivity。我在BaseActivity中有AlertDialog，我正在调用它。

AlertDialog.Builder alertDialog = new AlertDialog.Builder(this);

        alertDialog.setCancelable(false);
        alertDialog.setTitle(getResources().getString(R.string.title_attention));
        alertDialog.setMessage(getResources().getString(R.string.message_permission_denied));

        alertDialog.setPositiveButton(getResources().getString(R.string.button_settings), new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Intent myAppSettings = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS,
                        Uri.parse("package:" + getApplicationContext().getPackageName()));

                myAppSettings.addCategory(Intent.CATEGORY_DEFAULT);
                myAppSettings.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

                getApplicationContext().startActivity(myAppSettings);
            }
        });
        alertDialog.setNegativeButton(getResources().getString(R.string.button_exit),
                new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {

                aDialog.dismiss();
                finish();

            }
        });
        aDialog = alertDialog.create();

        aDialog.setOnShowListener(new DialogInterface.OnShowListener() {
            @Override
            public void onShow(DialogInterface dialog) {
                aDialog.getButton(AlertDialog.BUTTON_POSITIVE).setTextColor(getResources().getColor(R.color.colorButtonPositive));
                aDialog.getButton(AlertDialog.BUTTON_NEGATIVE).setTextColor(getResources().getColor(R.color.colorButtonNegative));
            }
        });

        if (!aDialog.isShowing())
            aDialog.show();

我也在BaseActivity中覆盖onDestroy方法，

@Override
    protected void onDestroy() {
super.onDestroy();
        try{
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    if (aDialog != null && aDialog.isShowing()) {
                        aDialog.dismiss();
                    }
                }
            });
        }catch (Exception e){
            new ErrorPrinter(e.toString());
        }
    }

StackTrace /错误日志，

01-13 08:38:59.928 5501-5501/com.company.android E/WindowManager: android.view.WindowLeaked: Activity com.company.android.activities.StartActivity has leaked window com.android.internal.policy.PhoneWindow$DecorView{7a59bc1 V.E...... R......D 0,0-1160,413} that was originally added here
                                                                                        at android.view.ViewRootImpl.<init>(ViewRootImpl.java:368)
                                                                                        at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:299)
                                                                                        at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:85)
                                                                                        at android.app.Dialog.show(Dialog.java:319)
                                                                                        at com.company.android.activities.BaseActivity.permissionDenied(BaseActivity.java:216)
                                                                                        at com.company.android.activities.BaseActivity.onRequestPermissionsResult(BaseActivity.java:160)
                                                                                        at android.app.Activity.dispatchRequestPermissionsResult(Activity.java:6582)
                                                                                        at android.app.Activity.dispatchActivityResult(Activity.java:6460)
                                                                                        at android.app.ActivityThread.deliverResults(ActivityThread.java:3695)
                                                                                        at android.app.ActivityThread.handleSendResult(ActivityThread.java:3742)
                                                                                        at android.app.ActivityThread.-wrap16(ActivityThread.java)
                                                                                        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1393)
                                                                                        at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                                        at android.os.Looper.loop(Looper.java:148)
                                                                                        at android.app.ActivityThread.main(ActivityThread.java:5417)
                                                                                        at java.lang.reflect.Method.invoke(Native Method)
                                                                                        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
                                                                                        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

但我在Android Monitor中遇到异常，StartActivity已经泄露了最初添加的窗口。谁能告诉我怎样才能解决这个错误？

我扩展到BaseActivity的原因是我想为所有活动使用一些功能，所以我可以编写或删除一次代码，它将用于所有活动。

感谢。

Answer 1

由于活动暂停时，它是垃圾收集的，但由于对话框仍然没有被解除，警报对话框仍然有对活动的引用。

您需要覆盖BaseActivity中的onPause（）和onStop（）：

@Override
  public void onPause() {
      super.onPause();

      if(aDialog != null)
          aDialog.dismiss();
  }

@Override
protected void onStop() {
    super.onStop();

    if(aDialog != null)
        aDialog.dismiss();
}

当其他活动开始时，同时关闭对话框并在alertDialog.setPositiveButton()中的此行之后完成活动：

getApplicationContext().startActivity(myAppSettings);
aDialog.dismiss();
finish();

Answer 2

我必须覆盖finish()方法并通过获取进程ID来终止我的进程。

@Override
    public void finish() {
        super.finish();
        android.os.Process.killProcess(android.os.Process.myPid());
    }

谢谢大家的帮助和支持！

为什么Android在超级活动中创建的对话框的扩展活动中泄漏窗口，甚至调用？

2 个答案: