fitsSystemWindows effect gone for fragments added via FragmentTransaction

Question

I have an Activity with navigation drawer and full-bleed Fragment (with image in the top that must appear behind translucent system bar on Lollipop). While I had an interim

Answer 1

Another approach written in Kotlin,

The problem:

The FrameLayout you are using does not propagate fitsSystemWindows="true" to his childs:

A solution:

Extend FrameLayout class and override the function onApplyWindowInsets() to propagate the window insets to attached fragments:

@TargetApi(Build.VERSION_CODES.LOLLIPOP)
class BetterFrameLayout : FrameLayout {

    constructor(context: Context) : super(context)

    constructor(context: Context, attrs: AttributeSet) : super(context, attrs)

    constructor(context: Context, attrs: AttributeSet, defStyle: Int) : super(context, attrs, defStyle)

    override fun onApplyWindowInsets(windowInsets: WindowInsets): WindowInsets {
        childCount.let {
            // propagates window insets to children's
            for (index in 0 until it) {
                getChildAt(index).dispatchApplyWindowInsets(windowInsets)
            }
        }
        return windowInsets
    }
}

Use this layout as a fragment container instead of the standard FrameLayout:

Extra:

If you want to know more about this checkout Chris Banes blog post Becoming a master window fitter.