Retrieving Information from an API with Custom Headers in React Native

Question

Retrieving Information from an API with Custom Headers in React Native

I have an API that necessitates specific headers for access.

Without these headers, a browser displays the following error:

Code: 4101
Message: Header X-Candy-Platform is required

However, when the headers are provided, the API returns a json response. I'm attempting to retrieve this json in a react Native application using the following function:

getPostsFromApiAsync(number) {
    return fetch('http://THEAPI?api_key=APIKEY', {method: 'GET', headers: {
                'x-candy-platform': 'desktop',
                'x-candy-audience': 'domestic',
                accept: 'application/json'
            }})
        .then((response) => response.json())
        .then((responseJson) => {
            var ds = new ListView.DataSource({rowHasChanged: (r1, r2) => r1 != r2})
            this.setState({peopleDataSource: ds.cloneWithRows(responseJson)});
        })
        .catch((error) => {
            console.error(error);
        });
}

Despite this, I'm receiving a "Network request failed" error.

If I use a locally stored file within the 'fetch' function, it works without any issues.

The API requires the following three headers:

x-candy-platform - desktop
x-candy-audience - domestic
Accept - application/json

Any suggestions or ideas on how to resolve this issue? Thank you.

javascript react-native fetch

Answer 1

Answer №1

It's important to include the Content-Type header in your API request. Give this code a try to see if it resolves the issue:

fetchPostsFromApiAsync(number) {
    return fetch('http://YOURAPIURL?api_key=APIKEY', {method: 'GET',
      headers: {
                'Content-Type'    : 'application/json',
                'Accept'          : 'application/json',
                'x-candy-platform': 'desktop',
                'x-candy-audience': 'domestic'
            }})
        .then((response) => response.json())
        .then((responseJson) => {
            var dataSource = new ListView.DataSource({rowHasChanged: (r1, r2) => r1 != r2})
            this.setState({data: dataSource.cloneWithRows(responseJson)});
        })
        .catch((error) => {
            console.error(error);
        });
}

Answer 2

It's important to include the Content-Type header in your API request. Give this code a try to see if it resolves the issue:

fetchPostsFromApiAsync(number) {
    return fetch('http://YOURAPIURL?api_key=APIKEY', {method: 'GET',
      headers: {
                'Content-Type'    : 'application/json',
                'Accept'          : 'application/json',
                'x-candy-platform': 'desktop',
                'x-candy-audience': 'domestic'
            }})
        .then((response) => response.json())
        .then((responseJson) => {
            var dataSource = new ListView.DataSource({rowHasChanged: (r1, r2) => r1 != r2})
            this.setState({data: dataSource.cloneWithRows(responseJson)});
        })
        .catch((error) => {
            console.error(error);
        });
}

Retrieving Information from an API with Custom Headers in React Native

Answer №1

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