covas_mobile_new/android/app/build.gradle.kts

@@ -13,6 +13,7 @@ android {
     compileOptions {
         sourceCompatibility = JavaVersion.VERSION_11
         targetCompatibility = JavaVersion.VERSION_11
+	isCoreLibraryDesugaringEnabled = true
     }
 
     kotlinOptions {
@@ -39,6 +40,10 @@ android {
     }
 }
 
+dependencies {
+    coreLibraryDesugaring("com.android.tools:desugar_jdk_libs:2.1.4")
+}
+
 flutter {
     source = "../.."
 }

covas_mobile_new/android/app/src/main/AndroidManifest.xml

@@ -3,6 +3,10 @@
         android:label="covas_mobile_new"
         android:name="${applicationName}"
         android:icon="@mipmap/ic_launcher">
+	     <meta-data
+            android:name="com.google.android.gms.ads.APPLICATION_ID"
+            android:value="ca-app-pub-4855855675386260~3438207239"/>
+
         <activity
             android:name=".MainActivity"
             android:exported="true"