How to create Interstitial Ad for AdMob in Ionic Cordova app?

You might have encountered an error like, when requesting an ad from AdMob using Cordova AdMob Plugin: interstitialAd is null, call createInterstitialView first

Chances are you are doing it wrong. To create an Interstitial Ad you need to take of three things:

1. Use interstitialAdId as the key to pass you ad unit id in your options object
2. First create a Interstitial view using createInterstitialView
3. In success callback from createInterstitialView use requestInterstitialAd to request an ad

Below is the complete code snippet:

if (window.plugins && window.plugins.AdMob) {
    var admob_key = device.platform == "Android" ? "XXXXX" : "YYYYYYYYY";
    var admob = window.plugins.AdMob;
    var options = {
        interstitialAdId: admob_key,
        autoShow: true
    };
    admob.createInterstitialView(options, function() {
            admob.requestInterstitialAd({
                    'isTesting': false
                },
                function() {
                    admob.showAd(true);
                },
                function(error) {
                    console.log('failed to request ad ' + error);
                }
            );
        },
        function() {
            console.log('failed to create Interstitial view');
        });
} else {
    console.log("Admob plugin not available");
}