How to show interstitial ads after uploading the home screen?

[kalena]

I need help, I would like to display an interstitial ad after the initial screen loads, but my code is giving the following failure:

java.lang.IllegalStateException: isLoaded must be called on the main UI thread.

Here's my code:

public class SplashScreenActivity extends AppCompatActivity {
InterstitialAd mInterstitialAd;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_splash_screen);

    // FIREBASE INTERSTICIAL
    mInterstitialAd = new InterstitialAd(this);
    mInterstitialAd.setAdUnitId("ca-app-pub-2565065222479596/3931476543");

    mInterstitialAd.setAdListener(new AdListener() {
        @Override
        public void onAdClosed() {
            requestNewInterstitial();
        }
    });

    requestNewInterstitial();

    Toast.makeText(this,"* Necessário Acesso a Internet *",Toast.LENGTH_LONG).show();

    Thread timerThread = new Thread() {
        public void run() {
            try {
                sleep(5000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            } finally {

                if (mInterstitialAd.isLoaded()) {
                    mInterstitialAd.show();
                    Intent intent = new Intent(SplashScreenActivity.this, MainActivity.class);
                    startActivity(intent);
                }
                else
                {
                    Intent intent = new Intent(SplashScreenActivity.this, MainActivity.class);
                }
            }

        }
    };
    timerThread.start();

}

// FIREBASE INTERSTICIAL
private void requestNewInterstitial() {
    AdRequest adRequest = new AdRequest.Builder()
            .addTestDevice("SEE_YOUR_LOGCAT_TO_GET_YOUR_DEVICE_ID")
            .build();

    mInterstitialAd.loadAd(adRequest);
}

}

DEBUG:

    01-22 16:27:03.048 13840-13970/? E/AndroidRuntime: FATAL EXCEPTION: Thread-6

Process: idea.tisco.pepavideos, PID: 13840

java.lang.IllegalStateException: isLoaded must be called on the main UI thread.

at oc.b(:com.google.android.gms.DynamiteModulesA@11951448:20)

at com.google.android.gms.ads.internal.a.d(:com.google.android.gms.DynamiteModulesA@11951448:98)

at com.google.android.gms.ads.internal.client.ak.onTransact(:com.google.android.gms.DynamiteModulesA@11951448:14)

at android.os.Binder.transact(Binder.java:499)

at com.google.android.gms.internal.zzep$zza$zza.isReady(Unknown Source)

at com.google.android.gms.internal.zzfa.isLoaded(Unknown Source)

at com.google.android.gms.ads.InterstitialAd.isLoaded(Unknown Source)

at company.ts.SplashScreenActivity$2.run(SplashScreenActivity.java:50)

Even after the debugging, I couldn't understand the reason for the mistake.

I would just display an interstitial right after the home screen or when I open the main activity.

Thank you so much!

[emerson]

When you create a thread on Android, you No can modify the thread user interface directly. It is necessary to use the method https://developer.android.com/reference/android/app/Activity.html#runOnUiThread(java.lang.Runnable) .

This way:

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

And to carry InterstitialAd, just add the code below in your method onCreate

mInterstitialAd = new InterstitialAd(this);
mInterstitialAd.setAdUnitId("ca-app-pub-2565065222479596/3931476543");
mInterstitialAd.loadAd(new AdRequest.Builder().build());