Call `MobileAds.initialize` on background thread

[blaugold]

The Google Ads team now recommends calling MobileAds.initialize on a background thread to avoid ANRs.

Currently, this Plugin calls MobileAds.initialize on the UI thread.

https://github.com/googleads/googleads-mobile-flutter/blob/8e0834ee7f9b8f0ac1b886c5b3cae8937835c605/packages/google_mobile_ads/android/src/main/java/io/flutter/plugins/googlemobileads/GoogleMobileAdsPlugin.java#L349

https://github.com/googleads/googleads-mobile-flutter/blob/8e0834ee7f9b8f0ac1b886c5b3cae8937835c605/packages/google_mobile_ads/android/src/main/java/io/flutter/plugins/googlemobileads/FlutterMobileAdsWrapper.java#L39

[malandr2]

Hi @blaugold, thanks for flagging. I've shared this with engineering to determine next steps.

[Gilianp]

Is there any workaround we can do on the flutter side while this lib is not updated? Can we call MobileAds.initialize in another Isolate safely?

[malandr2]

Hi @Gilianp, we have a PR in the works https://github.com/googleads/googleads-mobile-flutter/pull/1165 that will be included in the next version. Please see until it's submitted

[Gilianp]

Hi @Gilianp, we have a PR in the works #1165 that will be included in the next version. Please see until it's submitted

Thanks @malandr2 , I will wait the next update!

[marcellocamara]

I saw that this is implemented on all the examples folders:

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

1. AppOpen: https://github.com/googleads/googleads-mobile-flutter/pull/1172/files#diff-ce2cacda361f60f008608daec0de85463f9c41d2b6ed8279242ff65b0b27c099

2. Banner: https://github.com/googleads/googleads-mobile-flutter/pull/1172/files#diff-065422729ac6c9b5950ec50e23c96293adb847f5b1317ba0f807a9ee4a14e07d

3. Interstitial: https://github.com/googleads/googleads-mobile-flutter/pull/1172/files#diff-edfadc71f4943e251704336e4e4c3e685c0844261a37ac8aa08b86be13345948

4. Mediation: https://github.com/googleads/googleads-mobile-flutter/pull/1172/files#diff-e56b43ee67852aaeb05046321fcebb7f988ebbe61d71812caa9f5f786fcbbaf9

5, 6, 7 e 8 is the same thing...

This shouldn't be added into the plugin android manifest too ? Otherwise everyone will have to implement this manually.

[malandr2]

Hi @marcellocamara, those flags are optional. They are needed if you're not calling MobileAds.initialize on a background thread. When the google_mobile_ads plugin adds the background thread functionality, these flags will no longer be needed in our samples. See https://developers.google.com/admob/android/optimize-initialization#update_your_manifest_file for more details

[malandr2]

This has been resolved in https://github.com/googleads/googleads-mobile-flutter/pull/1179 and will be included in the next release .5.2.0

[peterweb2005]

@LTPhantom thanks is that, seems there is InitializationStatus return, or related, so the (my) app shouldn't await MobileAds.instance.initialize()? thanks

update

thanks, resolved i knew that is about the platform