What is the method to retrieve response headers in React Native for Android development?

Question

What is the method to retrieve response headers in React Native for Android development?

Hey there! I'm trying to figure out how to access the response header after making a POST request. I've been using console.log(response) to see what's inside the response object, and while I can retrieve the response body from responseData, I'm struggling to find a way to access the header as well. Can someone please provide guidance on how to retrieve both the header and body of the response? Thanks so much!

Below is an example of my current approach:

   fetch(URL_REGISTER, {
      method: 'POST',
      body: formData
    })
      .then((response) => response.json())
      .then((responseData) => {
        if(responseData.success == 1){
          this.setState({
            message1: responseData.msg,
          });
        }
        else{
          this.setState({
            message1: responseData.msg,
          });
        }
      })
      .done();
    },

javascript android xmlhttprequest react-native response

Answer 1

Answer №1

you can achieve this by following these steps

  fetchData() {
  var URL_NEW = 'https://www.example.com';
  fetch(URL_NEW, {method: 'POST',body: formData})
      .then(
          function(response) {
              console.log(response.headers.get('Content-Type'));
              console.log(response.headers.get('Date'));

              console.log(response.status);
              console.log(response.statusText);
              console.log(response.type);
              console.log(response.url);
              if (response.status !== 200) {
                  console.log('Status Code: ' + response.status);
                  return;
              }

              // Analyze the data received in the response
              response.json().then(function(data) {
                  console.log(data);
              });
          }
      )
      .catch(function(err) {
          console.log('An Error Occurred While Fetching Data', err);
      });
}

Explore more about fetch: Introduction to fetch()

Answer 2

you can achieve this by following these steps

  fetchData() {
  var URL_NEW = 'https://www.example.com';
  fetch(URL_NEW, {method: 'POST',body: formData})
      .then(
          function(response) {
              console.log(response.headers.get('Content-Type'));
              console.log(response.headers.get('Date'));

              console.log(response.status);
              console.log(response.statusText);
              console.log(response.type);
              console.log(response.url);
              if (response.status !== 200) {
                  console.log('Status Code: ' + response.status);
                  return;
              }

              // Analyze the data received in the response
              response.json().then(function(data) {
                  console.log(data);
              });
          }
      )
      .catch(function(err) {
          console.log('An Error Occurred While Fetching Data', err);
      });
}

Explore more about fetch: Introduction to fetch()

Answer 3

Answer №2

Extract the headers using response.headers

fetch(URL_REGISTER, {
  method: 'POST',
  body: formData
})
  .then((res) => {
    console.log(res.headers); //Access Headers{} object
}

Answer 4

Extract the headers using response.headers

fetch(URL_REGISTER, {
  method: 'POST',
  body: formData
})
  .then((res) => {
    console.log(res.headers); //Access Headers{} object
}

Answer 5

Answer №3

It is recommended to use
return response.json();

Answer 6

It is recommended to use
return response.json();

What is the method to retrieve response headers in React Native for Android development?

Answer №1

Answer №2

Answer №3

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