Android: AdMob not working

Question

AdMob won\'t show in my app. Every time I invoke loadAd(..) I get the following errors:

Requesting resource 0x7f0b000e failed because it

Answer 1

You used wrong ads:adUnitId="pub-***************". It must looks like ca-app-pub-3940256099942544/6300978111 format. You can take it after creating banner by url https://apps.admob.com/#monetize/adunit:create