Hey i had the same problem as you. I don't know if it will work but i think it's worth a try. I just put android:configChanges="orientation|keyboardhidden"
in all my activities i had declared in my AndroidManifest.xml
so i had something like this :
<activity
android:name=".appActivity"
android:configChanges="keyboard|orientation" />
<activity android:name=".app1Activity"
android:configChanges="keyboard|orientation" />
<activity android:name=".app2Activity"
android:configChanges="keyboard|orientation" />
<activity android:name=".app3Activity"
android:configChanges="keyboard|orientation" />
I tried toggling a breakpoint inside the method and it worked so you might want to try that as well, you never know!
Sorry if this doesn't help!