Close #2 and #3 by setting insetForeground to transparent

app/src/main/AndroidManifest.xml

@@ -11,7 +11,7 @@
         <activity
             android:name="com.rom4ek.sample.arcnavigationview.MainActivity"
             android:label="@string/app_name"
-            android:theme="@style/AppTheme">
+            android:theme="@style/AppTheme.NoActionBar">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
 

app/src/main/res/values-v21/styles.xml

@@ -1,9 +1,9 @@
 <resources>
 
-    <style name="AppTheme.NoActionBar">
+    <style name="AppTheme.NoActionBar" parent="AppTheme">
         <item name="windowActionBar">false</item>
         <item name="windowNoTitle">true</item>
-        <item name="android:windowDrawsSystemBarBackgrounds">true</item>
-        <item name="android:statusBarColor">@android:color/transparent</item>
+        <item name="android:windowTranslucentNavigation">true</item>
+        <item name="android:windowTranslucentStatus">true</item>
     </style>
 </resources>

app/src/main/res/values/styles.xml

@@ -6,11 +6,9 @@
         <item name="colorPrimary">@color/colorPrimary</item>
         <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
         <item name="colorAccent">@color/colorAccent</item>
-        <item name="windowActionBar">false</item>
-        <item name="windowNoTitle">true</item>
     </style>
 
-    <style name="AppTheme.NoActionBar">
+    <style name="AppTheme.NoActionBar" parent="AppTheme">
         <item name="windowActionBar">false</item>
         <item name="windowNoTitle">true</item>
     </style>

arcnavigationview/src/main/java/com/rom4ek/arcnavigationview/ArcNavigationView.java

@@ -8,9 +8,11 @@
 import android.graphics.Path;
 import android.graphics.PathMeasure;
 import android.graphics.Rect;
+import android.graphics.drawable.ColorDrawable;
 import android.os.Build;
 import android.support.annotation.RequiresApi;
 import android.support.design.internal.NavigationMenuView;
+import android.support.design.internal.ScrimInsetsFrameLayout;
 import android.support.design.widget.NavigationView;
 import android.support.v4.view.ViewCompat;
 import android.support.v4.widget.DrawerLayout;
@@ -22,6 +24,8 @@
 import android.view.ViewOutlineProvider;
 import android.widget.TextView;
 
+import java.lang.reflect.Field;
+
 /**
  * Created by rom4ek on 10.01.2017.
  */
@@ -62,9 +66,23 @@ public void init(Context context, AttributeSet attrs) {
             setLayerType(View.LAYER_TYPE_SOFTWARE, null);
         }
         setBackgroundColor(Color.TRANSPARENT);
+        setInsetsColor(Color.TRANSPARENT);
         THRESHOLD = Math.round(ArcViewSettings.dpToPx(getContext(), 15)); //some threshold for child views while remeasuring them
     }
 
+    private void setInsetsColor(int color) {
+        try {
+            Field insetForegroundField = ScrimInsetsFrameLayout.class.getDeclaredField("mInsetForeground");
+            insetForegroundField.setAccessible(true);
+            ColorDrawable colorDrawable = new ColorDrawable(color);
+            insetForegroundField.set(this, colorDrawable);
+        } catch (NoSuchFieldException e) {
+            e.printStackTrace();
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+    }
+
     @SuppressLint("RtlHardcoded")
     private Path createClipPath() {
         final Path path = new Path();
@@ -251,7 +269,7 @@ private Rect locateView(View view) {
     protected void dispatchDraw(Canvas canvas) {
         canvas.save();
 
-        canvas.clipPath(clipPath);
+        canvas.clipPath(clipPath);;
         super.dispatchDraw(canvas);
 
         canvas.restore();

build.gradle

@@ -23,6 +23,6 @@ ext {
     sdk = 25
     buildTools = "25.0.2"
     minSdk = 14
-    libraryVersion = "1.0.2"
+    libraryVersion = "1.0.3"
     supportVersion = "25.3.0"
 }