Для android sdk 31 требуется явно указывать android:exported в теге activity в манифесте

[SNechaev1]

Task :app:processDevDebugMainManifest FAILED .../AndroidManifest.xml Error: android:exported needs to be explicitly specified for . Apps targeting Android 12 and higher are required to specify an explicit value for android:exported when the corresponding component has an intent filter defined. See https://developer.android.com/guide/topics/manifest/activity-element#exported for details. /home/serg/apps/easylife/app/src/main/AndroidManifest.xml Error: android:exported needs to be explicitly specified for . Apps targeting Android 12 and higher are required to specify an explicit value for android:exported when the corresponding component has an intent filter defined. See https://developer.android.com/guide/topics/manifest/activity-element#exported for details.

See http://g.co/androidstudio/manifest-merger for more information about the manifest merger.

Execution failed for task ':app:processDevDebugMainManifest'.

Manifest merger failed with multiple errors, see logs