A fragment container enabling the use of android:fitsSystemWindows in fragment layouts

WindowInsetsFrameLayout.kt

class WindowInsetsFrameLayout @JvmOverloads constructor(
  context: Context,
  attrs: AttributeSet? = null,
  defStyleAttr: Int = 0
) : FrameLayout(context, attrs, defStyleAttr) {

  init {
    setOnHierarchyChangeListener(object : OnHierarchyChangeListener {
      override fun onChildViewAdded(
        parent: View,
        child: View
      ) {
        requestApplyInsets()
      }

      override fun onChildViewRemoved(
        parent: View,
        child: View
      ) {
      }
    })
  }

  override fun dispatchApplyWindowInsets(insets: WindowInsets): WindowInsets {
    if (!insets.isConsumed) {
      val count = childCount
      for (i in 0 until count) {
        val freshInsets = WindowInsets(insets)
        getChildAt(i)?.let { safeChild ->
          if (safeChild.visibility != View.GONE) safeChild.dispatchApplyWindowInsets(freshInsets)
        }
      }
    }
    return insets
  }
}