Develop Reference

Banner ad error: The ad size and ad unit ID must be set before loadAd is called

It is not a duplicate question. I already tried solutions from similiar questions but none of them worked.
My Google Ad Banner code is below:
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:ads="http://schemas.android.com/apk/res-auto"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/konstraitLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FFFFFF"
android:padding="0dp"
app:layoutDescription="#xml/activity_main_scene"
tools:context=".MainActivity">
...
<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:adSize="Banner"
ads:adUnitId="ca-app-pub-3940256099942544/6300978111"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
...
</androidx.constraintlayout.widget.ConstraintLayout>
The code in MainActivity:
adView = findViewById(R.id.adView);
AdRequest adRequest = new AdRequest.Builder().build();
adView.loadAd(adRequest);
So I added my banner in XML. I found it in java and then called it, but I guess I am missing something since I've got the following error:
The ad size and ad unit ID must be set before loadAd is called
Thanks for answer.

The adSize tag should have its value passed in capital letters. Replace this:
ads:adSize="Banner"
with this:
ads:adSize="BANNER"

Android Ads with AdMob and Firebase

I'm trying to add a smaller banner image to the bottom of one of the pages in my app. I'm running into a sort of loopy problem:
The code in the XML file is:
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/lib/com.sidekickz.myadventure.activity_hero_picture.xml"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
<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_alignParentBottom="true"
android:layout_centerHorizontal="true">
</com.google.android.gms.ads.AdView>
I've tried all variations of xmlns:app/android/ads but I either run into the issue of all the "android" tags not being supported, or something else.
MobileAds.initialize(getApplicationContext(), "appnumber");
AdView mAdView = (AdView) findViewById(R.id.adView);
mAdView.setAdSize(AdSize.SMART_BANNER);
mAdView.setAdUnitId("appnumberthing");
AdRequest adRequest = new AdRequest.Builder().build();
mAdView.loadAd(adRequest);
But at BEST my app shows an image saying that the ad size isn't set. If I follow the suggestions online to alter it, doing so results in Adsize and AdUnitId need to be set before loading.
Any help would be awesome and you would deserve a hug.
Thanks

Showing error Required XML attribute "adSize" was missing

I am implementing banner ads, but getting the error "Required XML attribute "adsize" was missing". I was using the developer.google.com link to add admob
I also visited other stackoverflow questions like as Required XML attribute 'adsize' was missing (google play service)
and I have already implemented everything but the error remains the same. Here is the code.
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context="com.example.abhishek.canddatastructureprograms.MainActivity">
<FrameLayout
android:id="#+id/sample_content_fragment"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<com.google.android.gms.ads.AdView
android:id="#+id/adView"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:layout_centerHorizontal="true"
android:layout_alignParentBottom="true"
ads:adSize="BANNER"
ads:adUnitId="#string/banner_ad_unit_id">
</com.google.android.gms.ads.AdView>
</RelativeLayout>
MainActivity.java
added the following code in onCreate() method.
AdView mAdview= (AdView) findViewById(R.id.adView);
//AdRequest mAdRequest= new AdRequest().Builder.build();
AdRequest request = new AdRequest.Builder()
.addTestDevice(AdRequest.DEVICE_ID_EMULATOR) // All emulators
.addTestDevice("9F099BD5E5700664591DEC5FDC92A40E") // An example device ID
.build();
mAdview.loadAd(request);
Please let me know if I need to add any more details or code.

Code seems to be right. Try to remove all left and right paddings or margins, maybe you get this error because you have too small screen to show add.

Fixed ad at the bottom of PrefereceActivity

I have a PreferenceActivity for a LiveWallpaper and have used the solution here (LINK) to create an Admob ad. It works, but the ad disappers when the user scrolls up or down and loads again when it comes into view. Is there a way so that the ad always stays at the bottom (or top) of the activity (like in a regular activity)?

Before
((LinearLayout)view).addView(adView);
Try setting the layoutParam like
adView.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT))
OR Change the layout like following:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:id="#+id/mainLayout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.google.android.gms.ads.AdView
android:id="#+id/adView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
ads:adSize="BANNER"
ads:adUnitId="#string/ad_unit_id"/>
</RelativeLayout>
And code part would be like this:
mAdView = (AdView) findViewById(R.id.adView);
mAdView.setAdListener(new ToastAdListener(this));
mAdView.loadAd(new AdRequest.Builder().build());

error in displaying google ads

I had declared google ads in xml as
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<com.google.ads.AdView
xmlns:ads="http://schemas.android.com/apk/lib/com.admobdemo"
android:id="#+id/adView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
ads:adSize="BANNER"
ads:adUnitId="a150cb2e31846cf"
ads:loadAdOnCreate="true"
ads:testDevices="AVD_for_4in_WVGA_Nexus_S,5554" />
</RelativeLayout>
I have declared the namespace in XML and in manifest file also.
And i am declaring in my activity as
AdView adView = (AdView) findViewById(R.id.adView);
AdRequest adRequest = new AdRequest();
adRequest.setTesting(true);
adView.loadAd(adRequest);
But when i run my app i am getting the RESPONSE as
adRequestUrlHtml: <html><head><script src="http://www.gstatic.com/afma/sdk-core-v40.js"></script><script>AFMA_buildAdURL({"preqs":0,"u_sd":1.5,"u_w":480,"simulator":1,"msid":"com.netserv.Pungry","cap":"m,a","js":"afma-sdk-a-v4.0.2","isu":"B3EEABB8EE11C2BE770B684D95219ECB","format":"320x50_mb","net":"ed","app_name":"4.0.2.android.com.netserv.Pungry","hl":"en","u_h":800,"testing":1,"u_so":"p","u_audio":4});</script></head><body></body></html>
But it's not displaying in the output and i am getting error as
03-19 13:43:46.190: E/Ads(4983): AdView missing required XML attribute adUnitId.
Can i know what is the error in my code.
Thanks:)

Take one layout in main layout when you want to show ad
<LinearLayout
android:id="#+id/addlay"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" >
</LinearLayout>
and in java file
AdView adView = new AdView(this, AdSize.BANNER, "xxxxxxxxxxxxxxx");
LinearLayout addLay = (LinearLayout) findViewById(R.id.addlay);
AdRequest adRequest = new AdRequest();
// adRequest.addTestDevice(AdRequest.TEST_EMULATOR);
addLay.addView(adView);
adView.loadAd(adRequest);
Did you check this
Also some times project clean also works ..
Are you able to see this