AppBarLayoutManager.java 文件源码

@Override
public void onOffsetChanged(AppBarLayout appBarLayout, int verticalOffset) {
    WritableMap event = Arguments.createMap();
    event.putDouble("offset", verticalOffset);
    ReactContext reactContext = (ReactContext) appBarLayout.getContext();
    reactContext.getJSModule(RCTEventEmitter.class).receiveEvent(appBarLayout.getId(), "topOffsetChanged", event);
}