Required Xml Attribute 'adsize' Was Missing (google Play Service)

There are so question like that but it's not duplicate because i have already used xmlns:ads='http://schemas.android.com/apk/res-auto' and i have done code mostly in java

Solution 1:

Change the namespace to

xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads"

Ad.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><com.google.android.gms.ads.AdViewandroid:id="@+id/adview"android:layout_width="match_parent"android:layout_height="wrap_content"ads:adSize="BANNER" /></LinearLayout>

NOTE :

Use this Namespace for new SDK

xmlns:ads="http://schemas.android.com/apk/res-auto"

Solution 2:

Try add "ads:adSize" to XML like below:

<com.google.android.gms.ads.AdView
    xmlns:ads="http://schemas.android.com/apk/res-auto"
    android:id="@+id/adview"
    ads:adSize="SMART_BANNER"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
     />

Solution 3:

Remove "adView.setAdSize(AdSize.SMART_BANNER);" from your java file.

Refer below:

Here is the XML layout

<?xml version="1.0" encoding="utf-8"?><LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"xmlns:ads="http://schemas.android.com/apk/res-auto"android:orientation="vertical"android:layout_width="match_parent"android:layout_height="match_parent"><TextViewandroid:layout_width="match_parent"android:layout_height="wrap_content"android:text="@string/hello"/><com.google.android.gms.ads.AdViewandroid:id="@+id/adView"android:layout_width="match_parent"android:layout_height="wrap_content"ads:adSize="BANNER"ads:adUnitId="INSERT_YOUR_AD_UNIT_ID_HERE"/></LinearLayout>

And here is your java file

package com.google.example.gms.ads.xml;

import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.AdView;

import android.app.Activity;
import android.os.Bundle;

/**
 * A simple {@link Activity} which embeds an AdView in its layout XML.
 */publicclassBannerXMLSampleextendsActivity {

  privatestaticfinalStringTEST_DEVICE_ID="INSERT_YOUR_TEST_DEVICE_ID_HERE";

  /** Called when the activity is first created. */@OverridepublicvoidonCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    // The "loadAdOnCreate" and "testDevices" XML attributes no longer available.AdViewadView= (AdView) this.findViewById(R.id.adView);
    AdRequestadRequest=newAdRequest.Builder()
        .addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
        .addTestDevice(TEST_DEVICE_ID)
        .build();
    adView.loadAd(adRequest);
  }
}

Refer the example here https://github.com/googleads/googleads-mobile-android-examples/tree/master/admob/banner-xml