从useEffect

时间:2019-09-24 10:55:10

标签: react-native hook react-hooks

我正在从useEffect调用一个函数,在该函数中我正在检查更新的道具,但它显示的是初始道具而不是更新的道具。 但是当我在功能之外管理道具时,它会显示更新的道具,而不是功能内部。

useEffect(() => {
TrackScreen('Sign up');
props
  .dispatch(fetchQualifications())
  .then((response: any) => {
    if (response) {
      const qualifications = response.map((data: any) => {
        return { value: data.name, label: data.name };
      });
      setQualificationList(qualifications);
    }
  })
  .catch((error: string) => {
    Toast.show({
      duration: toastTimer,
      text: error,
    });
  });
const listener = Navigation.events().bindComponent(
  {
    navigationButtonPressed: ({ buttonId }: NavigationButtonPressedEvent) => {
      if (buttonId === 'BACK') {
        isFormFilled();
      }
    },
  } as any,
  props.componentId,
);
return () => listener.remove();
}, []);

功能:

  const isFormFilled = () => {
    console.log('props in isForm filled', props);
  };

0 个答案:

没有答案
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