Add Interstitial Ad(插頁廣告)

ref:https://developers.google.com/mobile-ads-sdk/docs/admob/android/interstitial#interstitialad

匯入 com.google.android.gms.ads.*

宣告執行個體

建立插頁廣告，並指定 AdMob 廣告單元編號 (不能與橫幅廣告所用的編號重複)

再次提醒您，最好在應用程式的 Activity 內執行這些操作。

need dependency:

compile 'com.google.android.gms:play-services:8.1.0'

step1 prepare

// Create the InterstitialAd and set the adUnitId.

       mInterstitialAd = new InterstitialAd(this);

       // Defined in res/values/strings.xml

       mInterstitialAd.setAdUnitId(getString(R.string.ad_unit_id));//ca-app-pub-3940256099942544/1033173712

Srtep2 set the action when the ad closed

mInterstitialAd.setAdListener(new AdListener() {

           @Override

           public void onAdClosed() {

              //do something here

           }

       });

Step3 Load the AD and set the after loaded action

if (!mInterstitialAd.isLoading() && !mInterstitialAd.isLoaded()) {

           AdRequest adRequest = new AdRequest.Builder().build();

           mInterstitialAd.loadAd(adRequest);

       }

mRetryButton.setVisibility(View.INVISIBLE);

       resumeGame(GAME_LENGTH_MILLISECONDS);

explain:

it is becasue load the AD need time,showwe set only finsih load,tham show the retry button or do other.

Step4 show it

if AD is load,than can show

if (mInterstitialAd != null && mInterstitialAd.isLoaded()) {

           mInterstitialAd.show();

       }