我正在做react-native-modal,用户单击并查看不同的汽车模型,然后选择一个。在onPress
的{{1}}中,我将id传递给a函数,然后使用Touchableopacity
。
id从touchbleopacity传递给函数,并且被打印出来,但是当我使用setSelectedCarModelID
时,它不会更新状态。
setSelectedCarModelID
答案 0 :(得分:0)
这怎么样?通常,我使用构造函数来初始化状态
// this is where I initiated the state
constructor(props) {
super(props);
this.state = {
selectedCarModelID: null,
setSelectedCarModelID: null
};
}
// the function that is supposed to handle state update
const changeSelectedCarModelId = (id) => {
console.log(id, ":: id")
// setSelectedCarModelID(id)
this.setState({ setSelectedCarModelID: id})
}
//
<TouchableOpacity
onPress={() => {
changeSelectedCarModelId(carModel.id);
}}
key={carModel.id.toString()}
style={{ width: 50, height: 80 }}
>