Ad Size and Ad unit id must be set before loadAd is called

JavaAndroidAdmob

Java Problem Overview

I have this in my main xml file:

<com.google.android.gms.ads.AdView
	xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        ads:adUnitId="******************"
        ads:adSize="BANNER"
        android:id="@+id/adView"/>

I have already set the ad size and unit id, but when this is run (from MainActivity.java),

AdView adView = (AdView)this.findViewById(com.example.lovetestactual.R.id.adView);
AdRequest adRequest = new AdRequest.Builder().build();
adView.loadAd(adRequest);

It threw an exception of what is in the title.

Java Solutions

Solution 1 - Java

I found solution in the github example, that is:

instead of

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

delete the xmlns:ads*** tag and add

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

tag to your LinearLayout tag as follow:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns: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">
<TextView android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:text="@string/hello"/>
<com.google.android.gms.ads.AdView android: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>

That's it :)

github link for this xml

Solution 2 - Java

Warning: Make sure you set the ad size and ad unit ID in the same manner (i.e. set both in XML or both programmatically).

https://developers.google.com/admob/android/banner

Solution 3 - Java

This is going to be vague as you have not stated what type of view your XML file is (Relative, Linear etc.)

In my application with a scrollable relative layout I have included:

<RelativeLayout
    android:id="@+id/test"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:layout_below="@+id/TextView07"
    android:paddingTop="20dp" >
</RelativeLayout>

Now inside my actual class that I wan't the ad I have included:

private AdView adView;

/* Your ad unit id. Replace with your actual ad unit id. */
private static final String AD_UNIT_ID = "ca-app-pub-xxxxxx/yyyyyy";

/**
 * Simply loads the xml about page layout to display the text.
 */

public void onCreate(Bundle start) {
	super.onCreate(start);
	setContentView(R.layout.about);

	final TelephonyManager tm = (TelephonyManager) getBaseContext()
			.getSystemService(Context.TELEPHONY_SERVICE);

	//String deviceid = tm.getDeviceId();

	adView = new AdView(this);
	adView.setAdSize(AdSize.SMART_BANNER);
	adView.setAdUnitId(AD_UNIT_ID);

	// Add the AdView to the view hierarchy. The view will have no size
	// until the ad is loaded.
	RelativeLayout layout = (RelativeLayout) findViewById(R.id.test);
	layout.addView(adView);

	// Create an ad request. Check logcat output for the hashed device ID to
	// get test ads on a physical device.
	AdRequest adRequest = new AdRequest.Builder()
	.build();
			//.addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
			//.addTestDevice(deviceid).build();

	// Start loading the ad in the background.
	adView.loadAd(adRequest);
}

Now ideally you want to use a smart banner to optimise your layout for all devices, as I have above, this is standard now.

If this is no help head over to here

Solution 4 - Java

A lot of people Migrating existing applications to the google play services method are incorrectly adding the wrong information.

Something that I would like to point out is that many people with the same question have been using this as a template

<com.google.android.gms.ads.AdView
    xmlns:ads="http://schemas.android.com/apk/lib-auto"
    android:id="@+id/adView"
    android:layout_width="match_parent"
    android:layout_height="50dp"
    ads:adSize="BANNER"
    ads:adUnitId="ca-app-pub-XXXXXXXXXXXXXXXX/XXXXXXXXXX"
    ads:loadAdOnCreate="true" >
</com.google.android.gms.ads.AdView>

This is incorrect as xmlns:ads should be change to:- xmlns:ads="http://schemas.android.com/apk/res-auto"

Like so

<com.google.android.gms.ads.AdView
    xmlns:ads="http://schemas.android.com/apk/res-auto"
    android:id="@+id/adView"
    android:layout_width="match_parent"
    android:layout_height="50dp"
    ads:adSize="BANNER"
    ads:adUnitId="ca-app-pub-XXXXXXXXXXXXXXXX/XXXXXXXXXX"
    ads:loadAdOnCreate="true" >
</com.google.android.gms.ads.AdView>

Solution 5 - Java

remove xmlns:ads="http://schemas.android.com/tools" from root view

then add AdView

<com.google.android.gms.ads.AdView
        xmlns:ads="http://schemas.android.com/apk/res-auto"
        android:id="@+id/adView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_alignParentBottom="true"
        ads:adSize="BANNER"
        ads:adUnitId="ca-app-pub-3940256099942544/6300978111">
    </com.google.android.gms.ads.AdView>

Remember these steps:

  1. You can define xmlns:ads="http://schemas.android.com/apk/res-auto" on root view it self .

  2. if you have not defined xmlns:ads="http://schemas.android.com/apk/res-auto" inside rootView then you must need to add xmlns:ads="http://schemas.android.com/apk/res-auto" inside AdView.

  3. if you have defined adSize inside your AdView xml file then don't set dynamically, like : adView.setAdSize(AdSize.BANNER); or else it will through an exception java.lang.IllegalStateException: The ad size can only be set once on AdView.

  4. xmlns:ads="http://schemas.android.com/apk/res-auto" and xmlns:app="http://schemas.android.com/apk/res-auto" are looking same but there is a difference which is xmlns:ads and xmlns:app so don't get confuse.

I think it will resolve your issue ... Happy to help :)

Solution 6 - Java

I faced that same problem because i do not add this line on xmlns:ads="http://schemas.android.com/apk/res-auto" top of . Then i change my xml code like this

    <com.google.android.gms.ads.AdView
    xmlns:ads="http://schemas.android.com/apk/res-auto"
    android:id="@+id/adView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    ads:layout_constraintLeft_toLeftOf="parent"
    ads:layout_constraintRight_toRightOf="parent"
    ads:layout_constraintTop_toTopOf="parent"
    ads:layout_constraintBottom_toTopOf="@+id/headerText"
    android:layout_marginTop="@dimen/_2sdp"
    ads:adSize="BANNER"
    ads:adUnitId="ca-app-pub-3940256099942544/6300978111"
    android:visibility="visible">
</com.google.android.gms.ads.AdView>

after that i add this 3 line in onCreate method

AdView mAdView = (AdView)findViewById(R.id.adView);
    MobileAds.initialize(this, "ca-app-pub-3940256099942544~3347511713");
    AdRequest adRequest = new AdRequest.Builder().build();
    mAdView.loadAd(adRequest);

Solution 7 - Java

you have to replace the xmlns:ads in your parent layout

        xmlns:ads="http://schemas.android.com/tools"

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

Solution 8 - Java

I tried changing the namespace declaration but it just doesn't work. I fixed this by specifying a height value for the adView instead of wrap_content. It works for me

<com.google.android.gms.ads.AdView
    android:id="@+id/adView2"
    android:layout_width="match_parent"
    android:layout_height="50dp"
    android:layout_alignParentBottom="true"
    android:layout_centerHorizontal="true"
    android:layout_gravity="center|bottom"
    ads:adSize="BANNER"
    ads:adUnitId="@string/banner_ad_unit_id" />

Solution 9 - Java

For anyone interested here is a Kotlin version.

<RelativeLayout
    android:id="@+id/adContainer"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerHorizontal="true"
    android:layout_alignParentBottom="true">
</RelativeLayout>

And inside the code behind

//create a new AdView    
val adView = AdView(this)
adView.adSize = AdSize.SMART_BANNER
adView.adUnitId = "your adUnitID goes here or you can use a function"
adView.visibility = View.GONE

//add it to the layout
val layout = adContainer
layout.addView(adView)

//profit
MobileAds.initialize(this) {}
val adRequest = AdRequest.Builder().build()
adView.loadAd(adRequest)
adView.adListener = object : AdListener(){
    override fun onAdLoaded() {
        adView.visibility = View.VISIBLE
        super.onAdLoaded()
    }
}
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