react-native fetch获取数据 方法详解

1.设一个request

let myRequest = new Request(urlPath,{
            method:'POST',
            headers:{
                'Content-Type': 'application/x-www-form-urlencoded',
            },
            body:params,
        });

2.进行fetch调用

fetch(myRequest)
            .then((response) => {return response.json();})
            .then((data) => {
                this.state.dataList.push(data);
                console.log(this.state.dataList[0]);
                console.log(data);
            })
            .catch((error) => {
                console.error(error);
                Alert.alert("error!");
            });

3.在React Native Debugger中看console.log输出