Fix full screen bottom sheets going under the status bar, resolves #1803

bottomsheets/src/main/java/com/afollestad/materialdialogs/bottomsheets/BottomSheet.kt

@@ -18,6 +18,7 @@ package com.afollestad.materialdialogs.bottomsheets
 import android.annotation.SuppressLint
 import android.app.Activity
 import android.content.Context
+import android.graphics.Color
 import android.graphics.drawable.GradientDrawable
 import android.os.Build.VERSION.SDK_INT
 import android.view.LayoutInflater
@@ -25,7 +26,7 @@ import android.view.View.GONE
 import android.view.ViewGroup
 import android.view.Window
 import android.view.WindowManager.LayoutParams
-import android.view.WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS
+import androidx.annotation.ColorInt
 import androidx.coordinatorlayout.widget.CoordinatorLayout
 import com.afollestad.materialdialogs.DialogBehavior
 import com.afollestad.materialdialogs.LayoutMode
@@ -102,17 +103,22 @@ class BottomSheet(
     creatingActivity: Activity
   ) {
     val activityWindow = creatingActivity.window!!
-    if (SDK_INT >= 19) {
-      dialogWindow.addFlags(FLAG_TRANSLUCENT_STATUS)
+    if (SDK_INT >= 21) {
+      dialogWindow.statusBarColor = activityWindow.statusBarColor.darkenColor()
     }
     if (SDK_INT >= 21) {
-      dialogWindow.apply {
-        statusBarColor = activityWindow.statusBarColor
-        navigationBarColor = activityWindow.navigationBarColor
-      }
+      dialogWindow.navigationBarColor = activityWindow.navigationBarColor
     }
   }
 
+  @ColorInt fun Int.darkenColor(factor: Float = 0.5f): Int {
+    val color = this
+    return Color.HSVToColor(FloatArray(3).apply {
+      Color.colorToHSV(color, this)
+      this[2] *= factor
+    })
+  }
+
   private fun setupBottomSheetBehavior() {
     bottomSheetBehavior = BottomSheetBehavior.from(bottomSheetView)
         .apply {