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Unable to show Admob ads in android activity

I am trying to implement Admob ads in android activity but after everything done as per instruction given on firebase-Admob ads integration guide there is problem in showing ads in activity.What I have done so far is:
AndroidManifest.XML
<meta-data
android:name="com.google.android.gms.ads.APPLICATION_ID"
android:value="MY_APP_ID" />
XML
<com.google.android.gms.ads.AdView
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:id="#+id/ad_View"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_alignParentBottom="true"
ads:adSize="SMART_BANNER"
ads:adUnitId="MY_ADUNIT_ID">
</com.google.android.gms.ads.AdView>
Java
public class Ad extends AppCompatActivity {
AdView ad_View;
AdRequest adRequest;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_ad);
MobileAds.initialize(this,#string/appid);
ad_View = findViewById(R.id.adView);
ad_View = new AdView(this);
ad_View.setAdSize(AdSize.SMART_BANNER);
ad_View.setAdUnitId(#string/adunit);
MobileAds.initialize(this, new OnInitializationCompleteListener() {
#Override
public void onInitializationComplete(InitializationStatus initializationStatus) {
}
});
adRequest = new AdRequest.Builder().build();
ad_View.loadAd(adRequest);
}
}
Someone please let me know what I am doing. Any help would be appreciated.
THANKS

Please try to remove this lines from your code,
ad_View = new AdView(this);
ad_View.setAdSize(AdSize.SMART_BANNER);
ad_View.setAdUnitId(#string/adunit);
because you have already set in XML
So try this,
public class Ad extends AppCompatActivity {
AdView ad_View;
AdRequest adRequest;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_ad);
MobileAds.initialize(this,#string/appid);
ad_View = findViewById(R.id.adView);
MobileAds.initialize(this, new OnInitializationCompleteListener() {
#Override
public void onInitializationComplete(InitializationStatus initializationStatus) {
}
});
adRequest = new AdRequest.Builder().build();
ad_View.loadAd(adRequest);
}
}
Note : Please make sure to add Internet Permission in AndroidManifest.xml

My application does not appear admob ads

In my application AdMob ads do not appear please help and here is my code.
thank you.
code:
public class ViewHolderAdMob extends RecyclerView.ViewHolder {
public AdView mAdView;
public ViewHolderAdMob(View view) {
super(view);
MobileAds.initialize(getContext(),"ca-app-pub-3790716330382724~3051722333");
mAdView = (AdView) view.findViewById(R.id.adView);
AdRequest adRequest = new AdRequest.Builder()
.build();
mAdView.loadAd(adRequest);
}
}

Unable to display ads ErrorCode: 0 in ads android

I integrate google admob ads but it's displaying an error as,
W/Ads: There was a problem getting an ad response. ErrorCode: 0
08-09 16:05:43.933 24002-24002/com.locationtracking W/Ads: Failed to load ad: 0
I created a new ad id and copied the interstital ad unit id and app id but it's not working.
But when I used testing interstial id, it's displaying an ad. But when i copy and use the interstital id created, it's not displaying the ads. For past few days, I am struggling in this. I created new account and checked. Still same error.
MobileAds.initialize(this, "ca-app-pub-9172823052987868~3234462570");
mInterstitialAd = new InterstitialAd(this);
mInterstitialAd.setAdUnitId("ca-app-pub-9172823052987868/8576265071");
AdRequest adRequestInterstitial = new AdRequest.Builder().addTestDevice("deviceid").build();
mInterstitialAd.loadAd(adRequestInterstitial);
mInterstitialAd.setAdListener(new AdListener() {
#Override
public void onAdClosed() {
}
#Override
public void onAdLoaded() {
mAdIsLoading = false;
showInterstitial();
}
#Override
public void onAdFailedToLoad(int errorCode) {
mAdIsLoading = false;
}
});
}
private void showInterstitial() {
if (mInterstitialAd.isLoaded()) {
mInterstitialAd.show();
AdRequest adRequest = new AdRequest.Builder().addTestDevice("deviceid").build();
mInterstitialAd.loadAd(adRequest);
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.google.android.gms:play-services-ads:9.2.1'
compile 'com.google.android.gms:play-services-analytics:9.2.1'
}

Common Error! There is no fault in your code. It's all good.
You just need to wait a little. Your ad id is newly created so it will take some time to fetch ads from google servers. You can verify this by adding banner/interstitial ad id you creating for earlier applications and you'll see that they work. So give it some time and it will work soon. At least for me, it happens all the time.
W/Ads: There was a problem getting an ad response. ErrorCode: 0 08-09 16:05:43.933 24002-24002/com.locationtracking W/Ads: Failed to load ad: 0
remove addTestDevice("deviceid"); from your code display real ads
AdRequest adRequestInterstitial = new AdRequest.Builder().addTestDevice("deviceid").build();
to
AdRequest adRequestInterstitial = new AdRequest.Builder().build();
try bellow code its running well:
public class MainActivity extends AppCompatActivity {
InterstitialAd mInterstitialAd;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
////////////////////////// banner/////////////////////////
AdView mAdView = (AdView) findViewById(R.id.adView);
//AdRequest adRequest = new AdRequest.Builder().addTestDevice("7339C0A9091FA2D6AA9A2BF29077B5EA").build();
AdRequest adRequest = new AdRequest.Builder().build();
mAdView.loadAd(adRequest);
///////////////////////////////////////////////////////////
mInterstitialAd = new InterstitialAd(this);
mInterstitialAd.setAdUnitId(getResources().getString(R.string.interstitial_unit_id));
mInterstitialAd.setAdListener(new AdListener() {
#Override
public void onAdClosed() {
loadAdd();
}
});
loadAdd();
}
#Override
protected void onStart() {
super.onStart();
showInterstitial();
}
#Override
protected void onStop() {
super.onStop();
showInterstitial();
}
//////////////////////////////////add Interstitial section//////////////////////////////////////////////
private void showInterstitial() {
// Show the ad if it's ready. Otherwise toast and restart the game.
if (mInterstitialAd != null && mInterstitialAd.isLoaded()) {
mInterstitialAd.show();
} else {
//Toast.makeText(this, "Ad did not load", Toast.LENGTH_SHORT).show();
loadAdd();
}
}
private void loadAdd() {
// Request a new ad if one isn't already loaded, hide the button, and kick off the timer.
if (!mInterstitialAd.isLoading() && !mInterstitialAd.isLoaded()) {
//AdRequest adRequest = new AdRequest.Builder().addTestDevice("7339C0A9091FA2D6AA9A2BF29077B5EA").build();
AdRequest adRequest = new AdRequest.Builder().build();
mInterstitialAd.loadAd(adRequest);
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
}
compile 'com.google.android.gms:play-services-ads:8.3.0'

You can not display real ad in the test device, so you should remove the test device code when you upload your apk=> change your code as this
AdRequest adRequestInterstitial = new AdRequest.Builder().build();

Admob banner hidden

I was able to put together the code from Libgdx and Google play to add Ads from adMob but I cannot seem to bring the banner on top of the game screen and the banner only shows once I hit the back bottom and exit the app.
My code is below
any help would be appreciated
Android main class
public class MainActivity extends AndroidApplication {
static AdView adView;
private static final String AD_UNIT_ID = "my id";
AndroidApplicationConfiguration cfg = new AndroidApplicationConfiguration();
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
RelativeLayout layout = new RelativeLayout(this);
//cfg.useGL20 = false;
//initialize(new GameActivity(), false);
// Do the stuff that initialize() would do for you
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
View gameView = initializeForView(new GameActivity(), true);
AdRequest adRequest = new AdRequest.Builder()
.addTestDevice("my device")
.build();
adView = new AdView(this);
adView.setAdSize(AdSize.FULL_BANNER);
adView.setAdUnitId(AD_UNIT_ID);
adView.loadAd(adRequest);
RelativeLayout.LayoutParams gameParams =
new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
gameParams.bottomMargin = 1;
layout.addView(gameView, gameParams);
RelativeLayout.LayoutParams adParams =
new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
adParams.addRule(RelativeLayout.ALIGN_PARENT_TOP);
adParams.addRule(RelativeLayout.ALIGN_PARENT_TOP);
layout.addView(adView, adParams);
setContentView(layout);
}
#Override
protected void onDestroy() {
if (adView != null) {
adView.destroy();
}
super.onDestroy();
}
#Override
protected void onPause() {
if (adView != null) {
adView.pause();
}
super.onPause();
}
#Override
protected void onResume() {
if (adView != null) {
adView.resume();
}
super.onResume();
}
}

Solved see Edited code, added LayoutParams to the game view

I found it:
I just had to change
adView.setAdSize(AdSize.FULL_BANNER);
to
adView.setAdSize(AdSize.BANNER);

Admob + Andengine showing ad only on second request

the issue is: the ad doesn't show on first request, but when it makes the second request, it shows right. About 2 seconds before it make the second request, the ad of the first request shows up. Any ideas?
Thanks,
EDIT: I changed the gravity to TOP, and now it shows on the first time, but is showing just the top half of the ad, bizarre, any ideas?
#Override
protected void onSetContentView() {
if(adView != null){
return;
}
final FrameLayout frameLayout = new FrameLayout(this);
final FrameLayout.LayoutParams frameLayoutLayoutParams =
new FrameLayout.LayoutParams(FrameLayout.LayoutParams.MATCH_PARENT,
FrameLayout.LayoutParams.MATCH_PARENT);
final FrameLayout.LayoutParams adViewLayoutParams =
new FrameLayout.LayoutParams(FrameLayout.LayoutParams.MATCH_PARENT,
FrameLayout.LayoutParams.WRAP_CONTENT,
Gravity.CENTER_HORIZONTAL|Gravity.BOTTOM);
adView = new AdView(this);
adView.setAdSize(AdSize.BANNER);
adView.setAdUnitId(getResources().getString(R.string.ad_unit_id));
adView.setAdListener(new ToastAdListener(this));
adView.loadAd(new AdRequest.Builder().build());
this.mRenderSurfaceView = new RenderSurfaceView(this);
mRenderSurfaceView.setRenderer(mEngine,this);
final android.widget.FrameLayout.LayoutParams surfaceViewLayoutParams =
new FrameLayout.LayoutParams(super.createSurfaceViewLayoutParams());
frameLayout.addView(this.mRenderSurfaceView, surfaceViewLayoutParams);
frameLayout.addView(adView, adViewLayoutParams);
this.setContentView(frameLayout, frameLayoutLayoutParams);
}
#Override
protected void onPause() {
if(adView!=null){
adView.pause();
}
super.onPause();
}
#Override
protected void onResume() {
super.onResume();
if(adView!=null){
adView.resume();
}
}
#Override
protected void onDestroy() {
if(adView!=null){
adView.destroy();
}
super.onDestroy();
}

The problem was solved for me by adding the line
adView.setBackgroundColor(android.graphics.Color.TRANSPARENT);

The way I have done is as follows:
In the method which changes the visibility, I first check is the ad was loaded. If it was not, I don't change the visibility
Set an AdListener for the AdView. in the onReceivedAd(), I check the condition to hide it - if it should be hidden, I hide.
Works fine this way.

I have got the same problem, I solved this way:
Advertisement class:
public class Advertisement {
private AdView adView;
private final Handler adsHandler = new Handler();
public Advertisement(final Activity activity) {
adView = (AdView)activity.findViewById(R.id.adView);
}
//show the ads.
private void showAds () {
adView.loadAd(new AdRequest.Builder().build());
adView.setVisibility(android.view.View.VISIBLE);
adView.setEnabled(true);
}
//hide ads.
private void unshowAds () {
adView.loadAd(new AdRequest.Builder().build());
adView.setVisibility(android.view.View.INVISIBLE);
adView.setEnabled(false);
}
final Runnable unshowAdsRunnable = new Runnable() {
public void run() {
unshowAds();
}
};
final Runnable showAdsRunnable = new Runnable() {
public void run() {
showAds();
}
};
public void showAdvertisement() {
adsHandler.post(showAdsRunnable);
}
public void hideAdvertisement() {
adsHandler.post(unshowAdsRunnable);
}
}
In code:
...
public static Advertisement advertisement = new Advertisement(this);
...
public static void showAd()
{
if (advertisement != null)
advertisement.showAdvertisement();
}
public static void hideAd()
{
if (gangsterAdvertisement != null)
advertisement.hideAdvertisement();
}