我刚开始用Typescript在React Native上做了一个项目,为了在我的应用程序中构建表单,我沿着Formik。
我做了很棒的formik tutorial guide,看到了formik with RN section in JS的使用。
然而,当我试图将这个例子翻译成typescript时,我在Button's onPress attribute
上得到了以下输入错误:
No overload matches this call.
Overload 1 of 2, '(props: Readonly<ButtonProps>): Button', gave the following error.
Type '(e?: FormEvent<HTMLFormElement>) => void' is not assignable to type '(ev: NativeSyntheticEvent<NativeTouchEvent>) => void'.
Types of parameters 'e' and 'ev' are incompatible.
Type 'NativeSyntheticEvent<NativeTouchEvent>' is not assignable to type 'FormEvent<HTMLFormElement>'.
Types of property 'nativeEvent' are incompatible.
Type 'NativeTouchEvent' is missing the following properties from type 'Event': bubbles, cancelBubble, cancelable, composed, and 17 more.
Overload 2 of 2, '(props: ButtonProps, context?: any): Button', gave the following error.
Type '(e?: FormEvent<HTMLFormElement>) => void' is not assignable to type '(ev: NativeSyntheticEvent<NativeTouchEvent>) => void'.ts(2769)
index.d.ts(6926, 5): The expected type comes from property 'onPress' which is declared here on type 'IntrinsicAttributes & IntrinsicClassAttributes<Button> & Readonly<ButtonProps> & Readonly<{ children?: ReactNode; }>'
index.d.ts(6926, 5): The expected type comes from property 'onPress' which is declared here on type 'IntrinsicAt...
据我所知,handleSubmit
函数(e?: FormEvent<HTMLFormElement>) => void
,接受来自表单提交的事件(form
元素的onSubmit
属性)。由于RN中没有Form等价物,它会抱怨从RN Button's onPress
属性接收(ev: NativeSyntheticEvent<NativeTouchEvent>) => void
。
为了摆脱错误并继续前进,我使用了以下解决方案,但我并不满意:
<Button
title="Do it !"
color={colors.red}
onPress={
(handleSubmit as unknown) as (
ev: NativeSyntheticEvent<NativeTouchEvent>
) => void
}
/>
我想知道我应该怎样正确地解决这个打字错误。
CodeSandbox: App.tsx:32
谢谢你的帮助。
2条答案
按热度按时间ttisahbt1#
你可以这样描述你的类型:
(event: GestureResponderEvent) => void;
Code sample
ldxq2e6h2#
我通常这样做: