AdMob Interstitial 和错误 isLoaded 必须在主 UI 线程上调用

Question

在用户 William 建议我更改显示插页式广告的代码后

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
    //setDebugMode(true);
    initialiseAccelerometer();

    interstitial = new InterstitialAd(this);
    interstitial.setAdUnitId(getResources().getString(R.string.InterstitialAd_unit_id));

    interstitial.setAdListener(new AdListener() {
        public void onAdClosed() {
            // Create another ad request.
            final AdRequest adRequest = new AdRequest.Builder()
                .addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
                .build();
            interstitial.loadAd(adRequest);
        }
    });
    // Create ad request.
    final AdRequest adRequest = new AdRequest.Builder()
            .addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
            .build();
    interstitial.loadAd(adRequest);
}

为了展示这个广告：

public synchronized void GameOver() {
    if (lives_left > 0) {
        //success! - game passed - save score
        ScoreManager.save_localscore_simple(score_times[currentLevel], "" + currentLevel, false);

        if (Level_Buttons.length >= currentLevel + 1)
            ScoreManager.save_localscore_simple(unlocked, "unlock" + (currentLevel + 1));

        if (sound_success != 0 && !sound_muted)
            sp.play(sound_success, 1, 1, 0, 0, 1);

        //open interstitial ad
        if (interstitial.isLoaded()) {
            interstitial.show();
        }


    } else {
        //game not passed
        if (sound_gameover != 0 && !sound_muted)
            sp.play(sound_gameover, 1, 1, 0, 0, 1);
    }


    //open interstitial ad
    if (interstitial.isLoaded()) {
        interstitial.show();
    }

    StopMusic();
    state = GAMEOVER;

}

在游戏的每次游戏结束时，我都会收到此错误：

W/dalvikvm(20469): threadid=11: thread exiting with uncaught exception      (group=0x4180bda0)
E/AndroidRuntime(20469): FATAL EXCEPTION: Thread-67543
E/AndroidRuntime(20469): Process: com.test.mygame, PID: 20469
E/AndroidRuntime(20469): java.lang.IllegalStateException: isLoaded must be      called on the main UI thread.
E/AndroidRuntime(20469):    at     com.google.android.gms.common.internal.bh.b(SourceFile:251)
E/AndroidRuntime(20469):    at  com.google.android.gms.ads.internal.b.e(SourceFile:345)
E/AndroidRuntime(20469):    at com.google.android.gms.ads.internal.client.m.onTransact(SourceFile:66)
E/AndroidRuntime(20469):    at android.os.Binder.transact(Binder.java:361)
E/AndroidRuntime(20469):    at com.google.android.gms.internal.ap$a$a.isReady(Unknown Source)
E/AndroidRuntime(20469):    at com.google.android.gms.internal.au.isLoaded(Unknown Source)
E/AndroidRuntime(20469):    at com.google.android.gms.ads.InterstitialAd.isLoaded(Unknown Source)
E/AndroidRuntime(20469):    at com.test.mygame.MainGame.GameOver(MainGame.java:1128)
E/AndroidRuntime(20469):    at com.test.mygame.MainGame.Step(MainGame.java:773)
E/AndroidRuntime(20469):    at com.test.nudge.Screen.run(Screen.java:207)
E/AndroidRuntime(20469):    at java.lang.Thread.run(Thread.java:841)

这里有什么问题？请尽可能简单地解释我，因为我是新手，之前没有任何编程知识:) 谢谢！

Answer 1

这可能不是完整的答案，但很难说出正确的答案，因为从上面的代码中看不清楚。你没有显示你在哪里使用 GameOver()，但我认为你在错误的地方调用它，我认为你在任何后台线程中调用它，因为在 GameOver 中你调用 interstitial.isLoaded() 导致你的问题。就像堆栈跟踪所说的那样，在主 ui 线程中调用它。例如，在你的 GameOver() 中调用它：

   runOnUiThread(new Runnable() {
        @Override public void run() {
            if (interstitial.isLoaded()) {
              interstitial.show();
         }
        }
    });

可能您必须使用 activity 引用来调用它，这取决于您从何处调用 GameOver():

    mYourActivity.runOnUiThread(new Runnable() {
        @Override public void run() {
            if (interstitial.isLoaded()) {
              interstitial.show();
         }
        }
    });

Answer 2

分享我的案例和解决方案。

我创建了新线程并调用了 isLoaded()。它得到了同样的错误。所以我使用 Messager 通过下面的代码解决了它。

希望对您有所帮助。

代码如下。

主线程：

public void onCreate() {

        mHandler = new Handler(Looper.getMainLooper()) {
            @Override
            public void handleMessage(Message message) {
                switch (message.what) {
                    case ACTION_ADMOB_IS_LOADED:
                        MainActivity.logForDebug(TAG,"AdMob : Check for loaded");
                        if(mIAds.isLoaded()) {
                            MainActivity.logForDebug(TAG,"AdMob : Loaded ...... OK");
                            mIAds.show();
                        }
                        break;
                }


            }
        };

}

其他线程

    public void run(){

        while(true){
                Message message;
                // ------  For AdMob ------
                Message message = mHandler.obtainMessage(ACTION_ADMOB_IS_LOADED,null);
                message.sendToTarget();
                   }
        }

AdMob Interstitial 和错误 isLoaded 必须在主 UI 线程上调用

AdMob Interstitial and error isLoaded must be called on the main UI thread

java

android

admob

interstitial