fixed compiling

android/app/src/main/java/com/reactnativenavigation/layouts/BottomTabsLayout.java

 package com.reactnativenavigation.layouts;
 
-import android.content.Context;
 import android.graphics.Color;
+import android.support.v7.app.AppCompatActivity;
 import android.view.View;
 import android.widget.RelativeLayout;
 
 
 public class BottomTabsLayout extends RelativeLayout implements Layout, AHBottomNavigation.OnTabSelectedListener {
 
+    private final AppCompatActivity activity;
     private ActivityParams params;
     private BottomTabs bottomTabs;
     private ArrayList<ScreenStack> screenStacks;
     private int currentStackIndex = 0;
 
-    public BottomTabsLayout(Context context, ActivityParams params) {
-        super(context);
+    public BottomTabsLayout(AppCompatActivity activity, ActivityParams params) {
+        super(activity);
+        this.activity = activity;
         this.params = params;
         screenStacks = new ArrayList<>();
         createLayout();
 
     private void addTabs() {
         for (ScreenParams screenParams : params.tabParams) {
-            ScreenStack stack = new ScreenStack(getContext(), screenParams);
+            ScreenStack stack = new ScreenStack(activity, screenParams);
             screenStacks.add(stack);
 
             AHBottomNavigationItem item = new AHBottomNavigationItem(screenParams.title, screenParams.tabIcon,
         currentScreenStack.destroy();
         removeView(currentScreenStack);
 
-        ScreenStack newStack = new ScreenStack(getContext(), params);
+        ScreenStack newStack = new ScreenStack(activity, params);
         screenStacks.set(currentStackIndex, newStack);
         addView(newStack, 0, new RelativeLayout.LayoutParams(MATCH_PARENT, MATCH_PARENT));
     }

android/app/src/main/java/com/reactnativenavigation/layouts/LayoutFactory.java

         return new SingleScreenLayout(activity, params.screenParams);
     }
 
-    private static Layout createBottomTabsScreenLayout(Activity activity, ActivityParams params) {
+    private static Layout createBottomTabsScreenLayout(AppCompatActivity activity, ActivityParams params) {
         return new BottomTabsLayout(activity, params);
     }
 //