Admob Ads Are Not Showing Up But A Simple Button Is

i have this manifest.xml

Solution 1:

Two possibilities:

1. You didn't replace "my_unit_id" with your actual admob publisher id.
2. There is no ad to show. Keep in mind that the fill rate on ad requests is not 100%. Check your Logcat output. If you see a message saying something like "Ad Request successful, but no ad returned due to lack of inventory", then it means no ad is available.

Solution 2:

When you're testing this all out to make sure it works appropriately, you can turn on "testMode" for the ad. You'll have better luck in development with that on.

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