在Android中的自定义本机UI组件react-native 0.21.0中，如何将属性从react-native传递给ViewManager中的setter方法？

Question

I followed the directions at https://facebook.github.io/react-native/docs/native-components-android.html that explain how to call a native component from React Native. However, the property setters in the ViewManager class are not called.

Answer 1

One of the steps described in https://facebook.github.io/react-native/docs/native-components-android.html is this: "Properties that are to be reflected in JavaScript needs to be exposed as setter method annotated with @ReactProp (or @ReactPropGroup".

The import of ReactProp needs to be from the uimanager.annotations package, not from the uimanager package.

Correct import: import com.facebook.react.uimanager.annotations.ReactProp;

Previously, I had used

Incorrect import: import com.facebook.react.uimanager.ReactProp

I found the solution here: https://github.com/facebook/react-native/issues/5649