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@@ -1,5 +1,6 @@
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package com.reactnativenavigation.presentation;
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+import android.support.annotation.Nullable;
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import android.view.ViewGroup;
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import com.reactnativenavigation.utils.CommandListener;
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@@ -10,7 +11,11 @@ import java.util.HashMap;
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public class OverlayManager {
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private final HashMap<String, ViewController> overlayRegistry = new HashMap<>();
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- public void show(ViewGroup root, ViewController overlay, CommandListener listener) {
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+ public void show(@Nullable ViewGroup root, ViewController overlay, CommandListener listener) {
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+ if (root == null) {
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+ listener.onError("Can't show Overlay before setRoot is called. This will be resolved in #3899");
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+ return;
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+ }
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overlayRegistry.put(overlay.getId(), overlay);
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overlay.setOnAppearedListener(() -> listener.onSuccess(overlay.getId()));
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root.addView(overlay.getView());
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