Rewarded ads not working properly in Android

Question

Here is mine MainActivity -

class MainActivity() : AppCompatActivity() {

    private var btn1: Button? = null
    private var mRewardedAd: RewardedAd? = null

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)



        btn1 = findViewById<View>(R.id.button1) as Button

        btn1?.setOnClickListener {

            loadAd()
            showAd()

            if (mRewardedAd != null) {
                val intent: Intent = Intent(this, SecondActivity::class.java)
                startActivity(intent)
                Toast.makeText(this, " Ad completed", Toast.LENGTH_SHORT).show()
            }
        }
    }

    private fun showAd() {
        if (mRewardedAd != null) {
            mRewardedAd?.show(this, OnUserEarnedRewardListener() {
                fun onUserEarnedReward(rewardItem: RewardItem) {
                    var rewardAmount = rewardItem.getAmount()
                    var rewardType = rewardItem.getType()
                    Log.d(TAG, "User earned the reward.")
                    Toast.makeText(this, "User earned the reward.", Toast.LENGTH_SHORT).show()
                }
            })
        } else {
            Log.d(TAG, "The rewarded ad wasn't ready yet.")
            Toast.makeText(this, "The rewarded ad wasn't ready yet.", Toast.LENGTH_SHORT).show()
        }

    }


    private fun loadAd() {
        var adRequest = AdRequest.Builder().build()

        RewardedAd.load(
            this,
            "ca-app-pub-3940256099942544/5224354917",
            adRequest,
            object : RewardedAdLoadCallback() {
                override fun onAdFailedToLoad(adError: LoadAdError) {
                    Log.d(TAG, adError?.message)
                    mRewardedAd = null
                }

                override fun onAdLoaded(rewardedAd: RewardedAd) {
                    Log.d(TAG, "Ad was loaded.")
                    mRewardedAd = rewardedAd
                }
            })
    }
}

MainActivity.xml -

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="224dp"
        android:backgroundTint="#9C27B0"
        android:text="Button main Screen"
        android:textColor="@color/white"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.589"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:ignore="MissingConstraints" />

</androidx.constraintlayout.widget.ConstraintLayout>

Reward ad is not loading everything. Sometime when I press back then ads come. No idea How it work. I want when I press button in MainActivity , then It will show rewarded ads & after it goes to next Activity. please help me on this.

I am using Android Intent to go to nextActivity. sometimes its go to nextActivity without showing Ads. rewarded ads not loading everytime. Rightnow I am checking with text ads.

Answer 1

You are calling loadAd() and showAd() at the same time, when the user taps on the button.

You need to have an ad in the memory to show it. You have to call loadAd() just after you initialize your MobileAds SDK, so you always have a loaded ad in the memory, which you can show later on a button click or any other event.

Remove loadAd() call from btn1?.setOnClickListener and move it to onCreate() , you also have to intitialize MobileAds SDK

override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        MobileAds.initialize(this) {}
        loadAd()

        //here goes your remaining code
}

Inside showAd() method, set the fullScreenContentCallback , after null check of mRewarededAd , to load a new ad, after the user watches a rewarded ad.

mRewardedAd?.fullScreenContentCallback = object : FullScreenContentCallback() {
    override fun onAdDismissedFullScreenContent() {
      Log.d(TAG, "Ad was dismissed.")
      // Don't forget to set the ad reference to null so you
      // don't show the ad a second time.
      mRewardedAd = null

      // Reload rewarded ad
      loadAd()
    }

    override fun onAdFailedToShowFullScreenContent(adError: AdError?) {
      Log.d(TAG, "Ad failed to show.")
      // Don't forget to set the ad reference to null so you
      // don't show the ad a second time.
      mRewardedAd = null
    }

    override fun onAdShowedFullScreenContent() {
      Log.d(TAG, "Ad showed fullscreen content.")
      // Called when ad is dismissed.
    }
  }