Question

    const ACCESS_TOKEN = 'auth_token';

    var api = {

    async removeToken(){
        try {
            await AsyncStorage.removeItem(ACCESS_TOKEN);
            this.getToken(ACCESS_TOKEN);
        } catch (error) {
            console.log("something went wrong remove token")
        }
    },

    async storeToken(accessToken){
        try {
            await AsyncStorage.setItem(ACCESS_TOKEN, accessToken);
            this.getToken(ACCESS_TOKEN);
        } catch (error) {
            console.log("something went wrong store token")
        }
    },

    async getToken(){
        try {
            let token = await AsyncStorage.getItem(ACCESS_TOKEN);
            var parsedToken = JSON.parse(token).auth_token;
            console.log("getToken: " + parsedToken);
            return parsedToken;
        } catch (error) {
            console.log("something went wrong gettoken")
            return null;
        }
    },

    getTasks(){
        var url = "http://doit.unicrow.com/api/v1/tasks/";
        return fetch(url, {
            method: 'GET',
            headers: {
                'Authorization': "Token" + this.getToken()
            }
        }).then(response => response.json())
    }
}

module.exports = api;

大家好，我正在做一个反应js的项目，我遇到了问题。在getTasks方法的上面代码片段中，我想调用从getToken方法返回的标记值。使用“this”我无法做到这一点。我该怎么做？提前谢谢。

Answer 1

你可以使用州

来做到这一点

维持本地状态为

{ 令牌：＆＃34;＆＃34; } 将令牌置于状态为

async getToken(){
        try {
            let token = await AsyncStorage.getItem(ACCESS_TOKEN);
            var parsedToken = JSON.parse(token).auth_token;
            console.log("getToken: " + parsedToken);
           // return parsedToken;
this.setState({
token:parsedToken
})
        } catch (error) {
            console.log("something went wrong gettoken")
            return null;
        }
    },

并在你的getTasks方法中从状态

访问它

   getTasks(){
        var url = "http://doit.unicrow.com/api/v1/tasks/";
        return fetch(url, {
            method: 'GET',
            headers: {
                'Authorization': "Token" + this.state.token
            }
        }).then(response => response.json())
    }
}

React js - 从另一个方法调用方法

1 个答案: