ReactNative网络请求

1.GET请求

requestToTest() {
        return fetch(apiURL, {
            method: 'GET',
        }) 
        .then((response) => response.json())
        .then((data) => {
            console.log(data);
            return data;
        }).catch((err) => {
            console.log(err);
        });
    }

2.POST请求

requestToGetApplyId() {
        return fetch(apiURL, {
            method: 'POST',
            headers: {
                'Authorization': 'Bearer ' + token,
                'Accept': 'application/json',
                'Content-Type': 'application/json',
            },
            body: JSON.stringify({
                'name': 'userName',
                'telephone': '18088888888'
            })
        }) 
        .then((response) => response.json())
        .then((data) => {
            console.log(data);
            return data;
        }).catch((err) => {
            console.log(err);
        });
    }

3.PUT请求

requestToLogin(account, password) {

        return fetch(apiURL, {
            method: 'PUT',
            headers: {
                'Accept': 'application/json',
                "Content-Type": "application/x-www-form-urlencoded"
            },
            body: `userName=${userName}&passWord=${passWord}`
        })
        .then((response) => response.json())
        .then((data) => {
            console.log(data);
            return data;
        }).catch((err) => {
            console.log(err);
     

案例：

import React, {Component} from 'react';
import {
  StyleSheet, 
  Text, 
  Image,
  View
} from 'react-native';

var REQUEST_URL =
  "https://raw.githubusercontent.com/facebook/react-native/0.51-stable/docs/MoviesExample.json";

export default class App extends Component {
  constructor(props) {
    super(props);
    this.state = {
      movies: null,
    };
    this.fetchData = this.fetchData.bind(this);
  }

  componentDidMount() {
    this.fetchData();
  }

  fetchData() {
    fetch(REQUEST_URL)
      .then((response) => response.json())
      .then((responseData) => {
        this.setState({
          movies: responseData.movies,
        });
      });
  }

  render() {
    if(!this.state.movies) {
      return this.renderLoadingView();
    }
    var movie = this.state.movies[0];
    return this.renderMovie(movie);
  }

  renderLoadingView() {
    return (
      <View style = {styles.container}>
        <Text>loading...</Text>
      </View>
    );
  }

  renderMovie(movie) {
    return(
      <View style = {styles.container}>
        <Image 
          style = {styles.thumbnail}
          source = {{uri: movie.posters.thumbnail}}
        />

        <View style = {styles.rightContainer}>
          <Text style = {styles.title}>{movie.title}</Text>
          <Text style = {styles.year}>{movie.year}</Text>
        </View>

      </View>
    );
  }
  
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    flexDirection: 'row',
    justifyContent: 'center',
    alignItems: 'center',
    backgroundColor: '#F5FCFF',
  },
  thumbnail: {
    width: 100,
    height: 80
  },
  rightContainer: {
    flex: 1
  },
  title: {
    fontSize: 20,
    marginBottom: 8,
    textAlign: 'center'
  },
  year: {
    textAlign:'center'
  }
});