React Native AsyncStorage 未获取数据 [英] React Native AsyncStorage not getting data

问题描述

我使用以下代码来存储和检索数据.但它不能如我所愿.

I am using following code for storing and retrieving data. But it isn't working as I want.

设置数据:

async setDataFromApi(token, json) {
const {goBack} = this.props.navigation; // Navigation
let iext_inf = {
  token: token,
  userid: json.data.id,
  username: json.data.username,
  image: json.data.profile_picture,
};
console.log(iext_inf);
try {
  await AsyncStorage.setItem('iext_inf', JSON.stringify(iext_inf) ); // Stuck here
  goBack();
} catch (error) {
  console.log("Error");
}
}

获取数据:

async componentWillMount() {
    try {
      const value = await AsyncStorage.getItem("iext_inf"); //Stuck here
console.log(value);

  if (value !== null){
    this.setState({
      data : value
    })
  }

  if ( this.state.data !== null ) {
    this.props.navigation.navigate('Home', {'access_token': value});
  }

} catch (error) {
  console.log(error);
}
}

我做错了什么?我尝试添加单个数据并检索它并且由于某种原因它起作用了.现在不是了.提前致谢.

What am I doing wrong? I tried adding single data and retrieving it and it worked for some reason. Now it's not. Thank you in advance.

推荐答案

AsyncStorage 只接受字符串作为值和键.

AsyncStorage only takes string as a value and key.

您正在传递一个对象，尝试设置字符串而不是一个对象.我不确定 JSON.stringfy() 是否适用于 AsyncStorage.

You are passing an object try to set string not an object. I am not sure JSON.stringfy() works for AsyncStorage.

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