Show screen after RN view has rendered

android/app/src/main/java/com/reactnativenavigation/screens/FragmentScreen.java

@@ -121,4 +121,9 @@ public class FragmentScreen extends Screen {
     public void preventMountAfterReattachedToWindow() {
         // nothing
     }
+
+    @Override
+    public void setOnDisplayListener(OnDisplayListener onContentViewDisplayedListener) {
+        // nothing
+    }
 }

android/app/src/main/java/com/reactnativenavigation/screens/Screen.java

@@ -24,6 +24,10 @@ import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT;
 
 public abstract class Screen extends RelativeLayout {
 
+    public interface OnDisplayListener {
+        void onDisplay();
+    }
+
     protected final AppCompatActivity activity;
     protected final ScreenParams screenParams;
     protected TopBar topBar;
@@ -163,6 +167,8 @@ public abstract class Screen extends RelativeLayout {
         }
     }
 
+    public abstract void setOnDisplayListener(OnDisplayListener onContentViewDisplayedListener);
+
     public void show() {
         screenAnimator.show(screenParams.animateScreenTransitions);
     }

android/app/src/main/java/com/reactnativenavigation/screens/ScreenStack.java

@@ -62,13 +62,18 @@ public class ScreenStack {
         }
     }
 
-    private void pushScreenToVisibleStack(ScreenParams params, RelativeLayout.LayoutParams layoutParams,
-                                          Screen nextScreen, final Screen previousScreen) {
+    private void pushScreenToVisibleStack(final ScreenParams params, RelativeLayout.LayoutParams layoutParams,
+                                          final Screen nextScreen, final Screen previousScreen) {
         addScreen(nextScreen, layoutParams);
-        nextScreen.show(params.animateScreenTransitions, new Runnable() {
+        nextScreen.setOnDisplayListener(new Screen.OnDisplayListener() {
             @Override
-            public void run() {
-                removePreviousWithoutUnmount(previousScreen);
+            public void onDisplay() {
+                nextScreen.show(params.animateScreenTransitions, new Runnable() {
+                    @Override
+                    public void run() {
+                        removePreviousWithoutUnmount(previousScreen);
+                    }
+                });
             }
         });
     }

android/app/src/main/java/com/reactnativenavigation/screens/SingleScreen.java

@@ -41,4 +41,9 @@ public class SingleScreen extends Screen {
     public void preventMountAfterReattachedToWindow() {
         contentView.preventMountAfterReattachedToWindow();
     }
+
+    @Override
+    public void setOnDisplayListener(OnDisplayListener onContentViewDisplayedListener) {
+        contentView.setOnDisplayListener(onContentViewDisplayedListener);
+    }
 }

android/app/src/main/java/com/reactnativenavigation/screens/ViewPagerScreen.java

@@ -82,4 +82,9 @@ public class ViewPagerScreen extends Screen {
             contentView.preventMountAfterReattachedToWindow();
         }
     }
+
+    @Override
+    public void setOnDisplayListener(OnDisplayListener onContentViewDisplayedListener) {
+        contentViews.get(0).setOnDisplayListener(onContentViewDisplayedListener);
+    }
 }

android/app/src/main/java/com/reactnativenavigation/views/ContentView.java

@@ -2,10 +2,13 @@ package com.reactnativenavigation.views;
 
 import android.content.Context;
 import android.os.Bundle;
+import android.view.View;
 
 import com.facebook.react.ReactRootView;
 import com.reactnativenavigation.NavigationApplication;
 import com.reactnativenavigation.react.ReactViewHacks;
+import com.reactnativenavigation.screens.SingleScreen;
+import com.reactnativenavigation.utils.ViewUtils;
 
 public class ContentView extends ReactRootView {
 
@@ -13,6 +16,9 @@ public class ContentView extends ReactRootView {
     private String navigatorEventId;
     private final Bundle navigationParams;
 
+    boolean isContentVisible = false;
+    private SingleScreen.OnDisplayListener onDisplayListener;
+
     public ContentView(Context context, String screenId, Bundle navigationParams) {
         this(context, screenId, navigationParams, null);
     }
@@ -41,7 +47,32 @@ public class ContentView extends ReactRootView {
         ReactViewHacks.preventMountAfterReattachedToWindow(this);
     }
 
+    @Override
+    public void onViewAdded(final View child) {
+        super.onViewAdded(child);
+        detectContentViewVisible(child);
+    }
+
+    private void detectContentViewVisible(View child) {
+        if (onDisplayListener != null) {
+            ViewUtils.runOnPreDraw(child, new Runnable() {
+                @Override
+                public void run() {
+                    if (!isContentVisible) {
+                        isContentVisible = true;
+                        onDisplayListener.onDisplay();
+                        onDisplayListener = null;
+                    }
+                }
+            });
+        }
+    }
+
     private void attachToJS() {
         startReactApplication(NavigationApplication.instance.getReactGateway().getReactInstanceManager(), screenId, navigationParams);
     }
+
+    public void setOnDisplayListener(SingleScreen.OnDisplayListener onDisplayListener) {
+        this.onDisplayListener = onDisplayListener;
+    }
 }