java.lang.RuntimeException: Unable to get provider com.google.android.gms.ads.MobileAdsInitProvider: java.lang.IllegalStateException:

 just give a check meta-data tag is out of activity tag

if it is like this

<manifest>
    <application>
        <activity>
            <meta-data> 
                android:name="com.google.android.gms.ads.APPLICATION_ID" 
                android:value="ca-app-pub-4347201915048498~6120388314"/>
        </activity>
    </application>
</manifest>

this should be changed to this

<manifest>
    <application>
        <activity>
        </activity>
        <meta-data 
            android:name="com.google.android.gms.ads.APPLICATION_ID" 
            android:value="ca-app-pub-4347201915048498~6120388314"/>
    </application>
</manifest>







                                   OR

Only add this code to the manifest on your app and thats it

<meta-data
            android:name="com.google.android.gms.ads.AD_MANAGER_APP"
            android:value="true"/>







                                         OR

Note:- Make sure you don't have your meta-data tag inside activity...been there, done that.

<application>
   ...
   ...
   < meta-data 
        android:name="com.google.android.gms.ads.APPLICATION_ID" 
        android:value="ca-app-pub-################~##########"/> 
</application>

The solution is to put the meta data lines at Last (means below all other meta-data present in your android manifest file but just before closing application tag).

Don't get confused with APPLICATION_ID. You should not replace it with your application ID for ex. com.example.myapp. Just keep it as it is.

<application>
...
      <meta-data 
           android:name="com.google.android.gms.ads.APPLICATION_ID" 
           android:value="ca-app-pub-################~##########"/>
...
</application>