React Native 如何同时获取多个 API？

Question

For my project, I have to get several APIs in my projects, these APIs are linked to the others, ie they have the same data ...

Here is my code

export default class App extends React.Component {

  constructor(props) {
    super(props);
  }

  componentDidMount() {
    Promise.all([
      getData(),
      getData('?page=2'),
    ])
      .then(([dataSource1, dataSource2]) => {
        this.setState({
          isLoading: false,
          isLoading2: false,
          dataSource1,
          dataSource2,
        });
      })
      .catch((error) => {
        // handle errors
      });
  }

  render() {
    const getData = (subpath = '') => fetch(`https://api.rawg.io/api/games${subpath}`)
      .then(res => res.json())
      .then(result => result.results);
    console.log(getData)
        

  }

I tried with axios but without success ...

When I remove the comment, it shows me only the second fetch ...

Answer 1

You need two separate fetch calls for each API. To wait for both to finish, use Promise.all .

const getData = (subpath = '') => fetch(`https://api.rawg.io/api/games${subpath}`)
    .then(res => res.json())
    .then(result => result.results);

componentDidMount() {
    Promise.all([
        getData(),
        getData('?page=2'),
    ])
        .then(([dataSource1, dataSource2]) => {
            this.setState({
                isLoading: false,
                isLoading2: false,
                dataSource1,
                dataSource2,
            });
        })
        .catch((error) => {
            // handle errors
        });
}