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public abstract class FragmentInjectActivity extends AppCompatActivity
        implements HasAndroidInjector {

    @Inject DispatchingAndroidInjector<Object> androidInjector;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        AndroidInjection.inject(this);
        beforeOnCreate(); // <-- expose here for child to do things before onCreate
        super.onCreate(savedInstanceState);

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class DummyFragment @Inject constructor(
    private val repo: AppRepo
) : DaggerFragment() {
    // ...
}

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class MainActivity : FragmentInjectActivity() {

    @Inject lateinit var vmFactory: ViewModelProvider.Factory
    private val viewModel by viewModels<MainViewModel> { vmFactory }

    @Inject lateinit var fragmentFactory: FragmentFactory

    override fun beforeOnCreate() {
        supportFragmentManager.fragmentFactory = fragmentFactory
    }

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view.addOnLayoutChangeListener(object : View.OnLayoutChangeListener {
    override fun onLayoutChange(
        view: View,
        left: Int, top: Int, right: Int, bottom: Int,
        oldLeft: Int, oldTop: Int, oldRight: Int, oldBottom: Int
    ) {
        view.removeOnLayoutChangeListener(this)
        // now you can do something on the view
    }
})

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suspend fun View.awaitLayout() = suspendCancellableCoroutine<Unit>{
    // use suspendCancellableCoroutine so that 
    // we can remove this listener when the job is cancelled
}

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suspend fun View.awaitLayout() = suspendCancellableCoroutine<Unit>{ cont ->
    if (isLaidOut) {
        // if view is laid out, just resume coroutine
        cont.resume(Unit)
        return@suspendCancellableCoroutine
    }
    val listener = object : View.OnLayoutChangeListener {
        override fun onLayoutChange(
            view: View,
            left: Int,

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override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
    viewLifecycleOwner.lifecycleScope.launchWhenCreated {
        // before view laid out
        requireView().awaitLayout() // coroutine suspended
        // now view is laid out, we can get the size of view
    }
}

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viewLifecycleOwner.lifecycleScope.launchWhenResumed {
    context?.hideKeyboard(searchView)
    awaitKeyboardHidden() // wait for keyboard dismissed
    activity?.supportFragmentManager?.popBackStack()
}

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suspend fun Fragment.awaitKeyboardHidden() = suspendCancellableCoroutine<Unit> { cont ->
    if (!KeyboardVisibilityEvent.isKeyboardVisible(activity)) {
        cont.resume(Unit)
        return@suspendCancellableCoroutine
    }

    var unRegistrar: Unregistrar? = null
    unRegistrar = KeyboardVisibilityEvent.registerEventListener(activity) { open ->
        if (!open) { 
            // keyboard dismissed, time to resume coroutine

diousk

@Module
abstract class ActivityBuilder {
 @PerActivity
 @ContributesAndroidInjector(modules = [SomeModule::class])
 abstract fun bindSomeActivity(): SomeActivity
}

@Module
abstract class SomeModule {
 @Provides