workaround issue with dispatching window insets on Android API < 30 (f…

…ixes #6030)

app/src/main/java/de/westnordost/streetcomplete/view/RelativeLayoutFix.kt

@@ -0,0 +1,27 @@
+package de.westnordost.streetcomplete.view
+
+import android.content.Context
+import android.os.Build
+import android.os.Build.VERSION_CODES
+import android.util.AttributeSet
+import android.view.WindowInsets
+import android.widget.RelativeLayout
+
+class RelativeLayoutFix @JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null,
+    defStyleAttr: Int = 0,
+) : RelativeLayout(context, attrs, defStyleAttr) {
+
+    // always dispatch window insets to children, see #6030
+    override fun dispatchApplyWindowInsets(insets: WindowInsets): WindowInsets {
+        if (Build.VERSION.SDK_INT >= VERSION_CODES.R) {
+            return super.dispatchApplyWindowInsets(insets)
+        } else {
+            for (i in 0 until childCount) {
+                getChildAt(i).dispatchApplyWindowInsets(insets)
+            }
+            return insets
+        }
+    }
+}

app/src/main/res/layout/activity_main.xml

@@ -1,4 +1,4 @@
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<de.westnordost.streetcomplete.view.RelativeLayoutFix xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/main"
     android:layout_width="match_parent"
@@ -31,4 +31,4 @@
         android:layout_height="match_parent"
         android:clipChildren="false" />
 
- </RelativeLayout >
+ </de.westnordost.streetcomplete.view.RelativeLayoutFix >