Admob android : Rewarded video not showing sometimes

Question

I want to implement rewarded video on my android application, the first time i click to show video, is works just fine, but after that the second or the third time i click to show it again, it doesn't work, and throws on the log :

W/MessageQueue: Handler (com.google.android.gms.ads.exoplayer2.upstream.u) {1e5487c} sending message to a Handler on a dead thread
                                                                     java.lang.IllegalStateException: Handler (com.google.android.gms.ads.exoplayer2.upstream.u) {1e5487c} sending message to a Handler on a dead thread
                                                                         at android.os.MessageQueue.enqueueMessage(MessageQueue.java:543)
                                                                         at android.os.Handler.enqueueMessage(Handler.java:631)
                                                                         at android.os.Handler.sendMessageAtTime(Handler.java:600)
                                                                         at android.os.Handler.sendMessageDelayed(Handler.java:570)
                                                                         at android.os.Handler.sendEmptyMessageDelayed(Handler.java:534)
                                                                         at android.os.Handler.sendEmptyMessage(Handler.java:519)
                                                                         at com.google.android.gms.ads.exoplayer2.upstream.u.run(:com.google.android.gms.DynamiteModulesA:212)
                                                                         at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:423)
                                                                         at java.util.concurrent.FutureTask.run(FutureTask.java:237)
                                                                         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
                                                                         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
                                                                         at java.lang.Thread.run(Thread.java:818)


Could not show rewarded video ad from adapter.
                                                          java.lang.NullPointerException: Attempt to read from field 'com.google.android.gms.ads.internal.client.bq ip.a' on a null object reference
                                                              at com.google.ads.mediation.a.g(:com.google.android.gms.DynamiteModulesA:17227)
                                                              at com.google.android.gms.ads.internal.mediation.client.u.f(:com.google.android.gms.DynamiteModulesA:436)
                                                              at com.google.android.gms.ads.internal.reward.b.a(:com.google.android.gms.DynamiteModulesA:1314)
                                                              at com.google.android.gms.ads.internal.reward.client.e.onTransact(:com.google.android.gms.DynamiteModulesA:65)
                                                              at android.os.Binder.transact(Binder.java:387)
                                                              at com.google.android.gms.internal.zznu$zza$zza.show(Unknown Source)
                                                              at com.google.android.gms.internal.zzoc.show(Unknown Source)
                                                              at com.reperfection.monopoly.MainActivity$1.onClick(MainActivity.java:70)
                                                              at android.view.View.performClick(View.java:5702)
                                                              at android.view.View$PerformClick.run(View.java:22546)
                                                              at android.os.Handler.handleCallback(Handler.java:739)
                                                              at android.os.Handler.dispatchMessage(Handler.java:95)
                                                              at android.os.Looper.loop(Looper.java:158)
                                                              at android.app.ActivityThread.main(ActivityThread.java:7237)
                                                              at java.lang.reflect.Method.invoke(Native Method)
                                                              at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
                                                              at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
Could not call showVideo.
                                                          android.os.RemoteException
                                                              at com.google.android.gms.ads.internal.mediation.client.u.f(:com.google.android.gms.DynamiteModulesA:439)
                                                              at com.google.android.gms.ads.internal.reward.b.a(:com.google.android.gms.DynamiteModulesA:1314)
                                                              at com.google.android.gms.ads.internal.reward.client.e.onTransact(:com.google.android.gms.DynamiteModulesA:65)
                                                              at android.os.Binder.transact(Binder.java:387)
                                                              at com.google.android.gms.internal.zznu$zza$zza.show(Unknown Source)
                                                              at com.google.android.gms.internal.zzoc.show(Unknown Source)
                                                              at com.reperfection.monopoly.MainActivity$1.onClick(MainActivity.java:70)
                                                              at android.view.View.performClick(View.java:5702)
                                                              at android.view.View$PerformClick.run(View.java:22546)
                                                              at android.os.Handler.handleCallback(Handler.java:739)
                                                              at android.os.Handler.dispatchMessage(Handler.java:95)
                                                              at android.os.Looper.loop(Looper.java:158)
                                                              at android.app.ActivityThread.main(ActivityThread.java:7237)
                                                              at java.lang.reflect.Method.invoke(Native Method)
                                                              at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
                                                              at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)

This is my code :

public class MainActivity extends AppCompatActivity implements RewardedVideoAdListener {

TextView counterTV;
ImageView clickerBoard;
int counter;
int step = 1;
RelativeLayout parentRl;
LinearLayout ln1;
LinearLayout ln2;
private RewardedVideoAd mAd;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    overridePendingTransition(R.anim.slide_in_left, R.anim.slide_out_left);
    setContentView(R.layout.activity_main);

    counterTV = (TextView) findViewById(R.id.counter);
    parentRl = (RelativeLayout) findViewById(R.id.parentRl);
    clickerBoard = (ImageView) findViewById(R.id.clickerBoard);
    ln1 = (LinearLayout) findViewById(R.id.ln1);
    ln2 = (LinearLayout) findViewById(R.id.ln2);

    // Init rewarded video
    mAd = MobileAds.getRewardedVideoAdInstance(this);
    mAd.setRewardedVideoAdListener(this);
    loadRewardedVideoAd();

    ln1.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            if (mAd.isLoaded()) {
                mAd.show();
            }
        }
    });
}

private void loadRewardedVideoAd() {
    mAd.loadAd("ca-app-pub-3940256099942544/5224354917", new AdRequest.Builder().build());
}
@Override
public void onRewarded(RewardItem reward) {
    Toast.makeText(this, "onRewarded! currency: " + reward.getType() + "  amount: " +
            reward.getAmount(), Toast.LENGTH_SHORT).show();
    // Reward the user.
}

// The following listener methods are optional.
@Override
public void onRewardedVideoAdLeftApplication() {
    Toast.makeText(this, "onRewardedVideoAdLeftApplication",
            Toast.LENGTH_SHORT).show();
}

@Override
public void onRewardedVideoAdClosed() {
    Toast.makeText(this, "onRewardedVideoAdClosed", Toast.LENGTH_SHORT).show();
    loadRewardedVideoAd();
}

@Override
public void onRewardedVideoAdFailedToLoad(int errorCode) {
    Toast.makeText(this, "onRewardedVideoAdFailedToLoad", Toast.LENGTH_SHORT).show();
}

@Override
public void onRewardedVideoAdLoaded() {
    Toast.makeText(this, "onRewardedVideoAdLoaded", Toast.LENGTH_SHORT).show();
}

@Override
public void onRewardedVideoAdOpened() {
    Toast.makeText(this, "onRewardedVideoAdOpened", Toast.LENGTH_SHORT).show();
}

@Override
public void onRewardedVideoStarted() {
    Toast.makeText(this, "onRewardedVideoStarted", Toast.LENGTH_SHORT).show();
}

@Override
public void onResume() {
    mAd.resume(this);
    super.onResume();
}

@Override
public void onPause() {
    mAd.pause(this);
    super.onPause();
}

@Override
public void onDestroy() {
    mAd.destroy(this);
    super.onDestroy();
}}

Can you help to figure out what is wrong ? Thanks

Answer 1

SOLUTION

I faced the same issue and looking to the official example I found that they are not calling

RewardedVideoAd.destroy(Context)

Although they tell to call it in their official tutorial. So after removing it, it worked.

Answer 2

I'm placing an admob video, which is executed when you enter the activity, I had the same problem when entering the activity for the second time. In my case I put an executable loop to start the video when it is already loaded.

if (mRewardedVideoAd.isLoaded()) {
        mRewardedVideoAd.show();
    }else{
        loadRewardedVideoAd();
    }

This is part of all my code

private boolean started = false;
private Handler handler = new Handler();

private void initializeAdMob() {
    mRewardedVideoAd = MobileAds.getRewardedVideoAdInstance(this);
    mRewardedVideoAd.setRewardedVideoAdListener(this);
    loadRewardedVideoAd();
}

private void loadRewardedVideoAd() {
    if (!mRewardedVideoAd.isLoaded()) {
        mRewardedVideoAd.loadAd(getString(R.string.id_block_activity), new AdRequest.Builder().build());
    }
}

private void showRewardedVideoAd() {
    if (BaseInteractor.isNetworkAvailable(this)) {
        showProgressBar(true);
        start();
    }
}

private Runnable runnable = new Runnable() {
    @Override
    public void run() {
        if (mRewardedVideoAd.isLoaded()) {
            mRewardedVideoAd.show();
        }else{
            loadRewardedVideoAd();
        }
        if (started) {
            start();
        }
    }
};

public void stop() {
    started = false;
    handler.removeCallbacks(runnable);
}

public void start() {
    started = true;
    handler.postDelayed(runnable, 2000);
}

finally I stop the runnable in

@Override
public void onRewardedVideoAdOpened() {
    showProgressBar(false);
    stop();
}

I hope this helps you.