Google Mobile Ads Interstitial

Google Mobile Ads SDK — Interstitial Ads

Interstitial ads are full-page ads that cover the interface of an app. They are typically displayed at natural transition points in an app's flow.

Ad Placement Guidelines

• Place at natural app transition points (between levels, after completing a task)
• Identify target file and parent context before implementing

Implementation Steps

1. Determine the platform (Android / iOS)
2. Load the ad
3. Register for ad event callbacks
4. Show the ad
5. Verify the implementation

Code Example (Android — Kotlin)

import com.google.android.gms.ads.interstitial.InterstitialAd
import com.google.android.gms.ads.AdRequest

class MainActivity : AppCompatActivity() {
    private var interstitialAd: InterstitialAd? = null

    fun loadInterstitial() {
        val adRequest = AdRequest.Builder().build()
        InterstitialAd.load(this, "ca-app-pub-3940256099942544/1033173712", adRequest,
            object : InterstitialAdLoadCallback() {
                override fun onAdLoaded(ad: InterstitialAd) {
                    interstitialAd = ad
                }
                override fun onAdFailedToLoad(loadAdError: LoadAdError) {
                    interstitialAd = null
                }
            })
    }

    fun showInterstitial() {
        interstitialAd?.show(this)
    }
}

Common Pitfalls

• Ad not loaded before show: Always check that the ad is loaded before calling show()
• Showing too frequently: Respect user experience — don't show interstitials too often
• Missing ad unit ID: Use test ad IDs during development

Verification Checklist

• Test ad unit ID used during development
• Ad loads successfully
• Ad displays at appropriate transition points
• Production ad unit ID configured before release