com.facebook.react.bridge.Arguments#makeNativeMap ( )源码实例Demo

@ReactMethod(isBlockingSynchronousMethod = true)
public @Nullable WritableMap getConstantsForViewManager(final String viewManagerName) {
  ViewManager targetView =
      viewManagerName != null ? mUIImplementation.resolveViewManager(viewManagerName) : null;
  if (targetView == null) {
    return null;
  }

  SystraceMessage.beginSection(
          Systrace.TRACE_TAG_REACT_JAVA_BRIDGE, "UIManagerModule.getConstantsForViewManager")
      .arg("ViewManager", targetView.getName())
      .arg("Lazy", true)
      .flush();
  try {
    Map<String, Object> viewManagerConstants =
        UIManagerModuleConstantsHelper.createConstantsForViewManager(
            targetView, null, null, null, mCustomDirectEvents);
    if (viewManagerConstants != null) {
      return Arguments.makeNativeMap(viewManagerConstants);
    }
    return null;
  } finally {
    SystraceMessage.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE).flush();
  }
}
 

@ReactMethod(isBlockingSynchronousMethod = true)
public WritableMap getDefaultEventTypes() {
  return Arguments.makeNativeMap(UIManagerModuleConstantsHelper.getDefaultExportableEventTypes());
}