Admob Bottom Text Ad for Flutter android

ad_badge.xml

<!--
  drawable/ad_badge.xml
-->
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <solid android:color="#1A000000" />
    <corners android:radius="10dp" />
</shape>

bottom_text_ad.xml

<?xml version="1.0" encoding="utf-8"?>
<com.google.android.gms.ads.nativead.NativeAdView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/native_ad_view"
    android:layout_width="match_parent"
    android:layout_height="35dp">

    <Button
        android:id="@+id/ad_call_to_action"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:alpha="0"
        android:background="#00FFFFFF"
        tools:text="Click" />

    <LinearLayout
        android:id="@+id/content_container"
        android:layout_width="wrap_content"
        android:layout_height="54dp"
        android:layout_gravity="center_horizontal"
        android:gravity="center_vertical"
        android:orientation="horizontal">

        <TextView
            android:id="@+id/adButton"
            android:layout_width="wrap_content"
            android:layout_height="20dp"
            android:paddingStart="10dp"
            android:paddingEnd="10dp"
            android:background="@drawable/ad_badge"
            android:text="AD"
            android:textColor="#333333"
            android:textSize="11sp"
            android:gravity="center" />

        <TextView
            android:id="@+id/ad_headline"
            android:layout_width="wrap_content"
            android:layout_height="20dp"
            android:gravity="center_vertical"
            android:layout_marginStart="8dp"
            android:ellipsize="end"
            android:includeFontPadding="false"
            android:maxLines="1"
            android:text="Ad Title"
            android:textColor="#000000"
            android:textSize="12sp" />
    </LinearLayout>
</com.google.android.gms.ads.nativead.NativeAdView>

BottomTextAdFactory.kt

package com.example.app

import android.content.Context
import android.view.LayoutInflater
import android.widget.Button
import android.widget.ImageView
import android.widget.TextView
import com.google.android.gms.ads.nativead.NativeAd
import com.google.android.gms.ads.nativead.NativeAdView
import io.flutter.plugins.googlemobileads.GoogleMobileAdsPlugin

class BottomTextAdFactory(private val context: Context) : GoogleMobileAdsPlugin.NativeAdFactory {
    override fun createNativeAd(
        nativeAd: NativeAd,
        customOptions: MutableMap<String, Any>?
    ): NativeAdView {
        val adView = LayoutInflater.from(context).inflate(R.layout.bottom_text_ad, null) as NativeAdView
        adView.headlineView = adView.findViewById(R.id.ad_headline)
        adView.callToActionView = adView.findViewById(R.id.ad_call_to_action)
        (adView.headlineView as TextView).text = nativeAd.headline
        (adView.callToActionView as Button).text = nativeAd.callToAction
        adView.setNativeAd(nativeAd)
        return adView
    }
}

Configuration.md

1. Add the com.google.android.gms.ads.APPLICATION_ID meta-data to your AndroidManifest.xml

<meta-data
  android:name="com.google.android.gms.ads.APPLICATION_ID"
  android:value="ca-app-pub-XXXXXXXXX"/>

2. implementation "com.google.android.gms:play-services-ads"

• The latest version recommends Kotlin 2.1.0.

implementation "com.google.android.gms:play-services-ads:24.3.0"

MainActivity.kt

package com.example.app

import io.flutter.embedding.android.FlutterActivity
import io.flutter.embedding.engine.FlutterEngine
import io.flutter.plugins.googlemobileads.GoogleMobileAdsPlugin

class MainActivity: FlutterActivity() {
    override fun configureFlutterEngine(flutterEngine: FlutterEngine) {
        super.configureFlutterEngine(flutterEngine)
        GoogleMobileAdsPlugin.registerNativeAdFactory(
            flutterEngine,
            "bottomTextAd",
            BottomTextAdFactory(this),
        )
    }

    override fun cleanUpFlutterEngine(flutterEngine: FlutterEngine) {
        GoogleMobileAdsPlugin.unregisterNativeAdFactory(flutterEngine, "bottomTextAd")
        super.cleanUpFlutterEngine(flutterEngine)
    }
}