Add android log when trying to add a view into a non viewGroup

Summary:
Easy diff to add extra logging when Fabric tries to add a view inside a view that is not a ViewGroup

changelog: [internal]

Reviewed By: JoshuaGross

Differential Revision: D19737506

fbshipit-source-id: ecb858820de7befc385e725c45b537359e39c0e7

ReactAndroid/src/main/java/com/facebook/react/fabric/mounting/MountingManager.java

@@ -18,6 +18,7 @@
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.UiThread;
+import com.facebook.common.logging.FLog;
 import com.facebook.infer.annotation.Assertions;
 import com.facebook.infer.annotation.ThreadConfined;
 import com.facebook.react.bridge.ReactNoCrashSoftException;
@@ -113,6 +114,17 @@ private void dropView(@NonNull View view) {
  public void addViewAt(int parentTag, int tag, int index) {
  UiThreadUtil.assertOnUiThread();
  ViewState parentViewState = getViewState(parentTag);
+ if (!(parentViewState.mView instanceof ViewGroup)) {
+ String message =
+ "Unable to add a view into a view that is not a ViewGroup. ParentTag: "
+ + parentTag
+ + " - Tag: "
+ + tag
+ + " - Index: "
+ + index;
+ FLog.e(TAG, message);
+ throw new IllegalStateException(message);
+ }
  final ViewGroup parentView = (ViewGroup) parentViewState.mView;
  ViewState viewState = getViewState(tag);
  final View view = viewState.mView;