插页式错误android无法暂停活动

Question

我对插页式广告有一个问题。 当我尝试处理 onAdClosed() 方法时出现错误，无法暂停活动

这里我用的是片段

我在这里发布我的 logcat 输出

03-18 19:28:50.169: E/AndroidRuntime(26349): FATAL EXCEPTION: main
03-18 19:28:50.169: E/AndroidRuntime(26349): java.lang.RuntimeException: Unable to pause  
activity {com.social_sweep.app/com.google.android.gms.ads.AdActivity}:
java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState

03-18 19:28:50.169: E/AndroidRuntime(26349):at
android.app.ActivityThread.performPauseActivity(ActivityThread.java:2846)

03-18 19:28:50.169: E/AndroidRuntime(26349): at
android.app.ActivityThread.performPauseActivity(ActivityThread.java:2802)
03-18 19:28:50.169: E/AndroidRuntime(26349): at
android.app.ActivityThread.handlePauseActivity(ActivityThread.java:2780)
03-18 19:28:50.169: E/AndroidRuntime(26349):at
android.app.ActivityThread.access$800(ActivityThread.java:133)
 03-18 19:28:50.169: E/AndroidRuntime(26349):at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1220)
03-18 19:28:50.169: E/AndroidRuntime(26349):at
android.os.Handler.dispatchMessage(Handler.java:99)
03-18 19:28:50.169: E/AndroidRuntime(26349):    at
android.os.Looper.loop(Looper.java:137)
03-18 19:28:50.169: E/AndroidRuntime(26349):    at
android.app.ActivityThread.main(ActivityThread.java:4794)
03-18 19:28:50.169: E/AndroidRuntime(26349):    at
java.lang.reflect.Method.invokeNative(Native Method)
03-18 19:28:50.169: E/AndroidRuntime(26349):    at
java.lang.reflect.Method.invoke(Method.java:511)
03-18 19:28:50.169: E/AndroidRuntime(26349):    at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
03-18 19:28:50.169: E/AndroidRuntime(26349):    at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)
03-18 19:28:50.169: E/AndroidRuntime(26349):    at
dalvik.system.NativeStart.main(Native Method)
03-18 19:28:50.169: E/AndroidRuntime(26349): Caused by: java.lang.IllegalStateException:
Can not perform this action after onSaveInstanceState
03-18 19:28:50.169: E/AndroidRuntime(26349):    at
android.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1280)
03-18 19:28:50.169: E/AndroidRuntime(26349):    at
android.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1291)
03-18 19:28:50.169: E/AndroidRuntime(26349):    at
android.app.BackStackRecord.commitInternal(BackStackRecord.java:548)
03-18 19:28:50.169: E/AndroidRuntime(26349):    at
android.app.BackStackRecord.commit(BackStackRecord.java:532)
03-18 19:28:50.169: E/AndroidRuntime(26349):    at
com.social_sweep.app.SelectEvent$3$1.onAdClosed(SelectEvent.java:461)
03-18 19:28:50.169: E/AndroidRuntime(26349):    at
com.google.android.gms.internal.t.onAdClosed(Unknown Source)
03-18 19:28:50.169: E/AndroidRuntime(26349):    at
com.google.android.gms.internal.ab$a.onTransact(Unknown Source)
03-18 19:28:50.169: E/AndroidRuntime(26349):    at
android.os.Binder.transact(Binder.java:326)
android.os.Binder.transact(Binder.java:326)
03-18 19:28:50.169: E/AndroidRuntime(26349):    at
com.google.android.gms.internal.bs$a$a.onPause(Unknown Source)
03-18 19:28:50.169: E/AndroidRuntime(26349):    at
com.google.android.gms.ads.AdActivity.onPause(Unknown Source)
03-18 19:28:50.169: E/AndroidRuntime(26349):    at
android.app.Activity.performPause(Activity.java:5219)
03-18 19:28:50.169: E/AndroidRuntime(26349):    at
android.app.Instrumentation.callActivityOnPause(Instrumentation.java:1225)
03-18 19:28:50.169: E/AndroidRuntime(26349):    at
android.app.ActivityThread.performPauseActivity(ActivityThread.java:2833)
03-18 19:28:50.169: E/AndroidRuntime(26349):    ... 12 more

这是我正在做的代码，

 if (fragment != null) {
             interstitial.setAdListener(new AdListener() {

             public void onAdLoaded() {

             displayInterstitial();

             }

             public void onAdClosed() {
            FragmentManager fragmentManager = getFragmentManager();
            fragmentManager
                    .beginTransaction()
                    .setCustomAnimations(R.animator.slide_in_left,
                            R.animator.slide_out_right,
                            R.animator.slide_in_left,
                            R.animator.slide_out_right)
                    .replace(R.id.frame_container, fragment)..commitAllowingStateLoss();

            // update selected item and title, then close the
            // drawer

            getActivity().getActionBar().setTitle(Title);
             };

             });

提前致谢。

Answer 1

您遇到的错误是由于您在 Activity 上调用 #onSaveInstanceState 之后尝试执行片段操作。即您的 Activity 已停止并可能被销毁，这无疑是因为 Ad Activity 已显示。当广告关闭时，您的 Activity 将重新启动（甚至可能重新创建），因此此时可以进行任何您想要的 UI 操作。

附注：

请勿从 AdListener#onAdLoaded 调用 displayInterstitial。

这将提供非常糟糕的用户体验，并在您最不期望的时候（例如在您的 Activity 存在之后）显示广告，从而导致您出现大量问题。

而是在应用的自然断点处调用 DisplayInterstitial。

Answer 2

在 onAdClosed() 中添加此代码：-

if(!isAdded()) { return; }