Trying to load JSON via url in react-native but not getting correct response

You are using the arrow function wrong. Instead of this:

fetch("http://bitcfeedcms.rf.gd/script.php")
  .then(response => {
    console.log(response);
    response.json();
  })
  .then(responseJson => {
    this.setState({ data: responseJson });
  })

You should return the response.json()

fetch("http://bitcfeedcms.rf.gd/script.php")
   .then(response => {
     console.log(response);
     return response.json();
   })
   .then(responseJson => {
     this.setState({ data: responseJson });
   })

This way you can reach responseJson in the next then.

Also, if your app complains about fetch() network request failed probably it's about Info.plist or Manifest configuration error. See this topic.

For iOS, you can try the same request with this https dummy json url: https://jsonplaceholder.typicode.com/posts/1

http://bitcfeedcms.rf.gd/script.php , this link returns multiple sets of JSON.

([{"FeedTitle":"Debotos","FeedDescription":"First Feed Testing....."},{"FeedTitle":"Akash","FeedDescription":"Creating a clan named \"Khulna Sparkers\""},{"FeedTitle":"Ripon","FeedDescription":"My brother and my one of the closest individual"}])

try this . . .

getData() {
 fetch("http://bitcfeedcms.rf.gd/script.php")
  .then(response => {
    console.log(response);
    response.json();
  })
  .then(responseJson => {
        var length = responseJson.length;
        for (var a = 0; a<length;a++) {
            var FeedTitle = responseJson[a].FeedTitle; //<-variable from your response json
            var FeedDescription = responseJson[a].FeedDescription; //<-from your response json
            console.log(FeedTitle);
            console.log(FeedDescription);
        }
  })
  .catch(error => {
    console.error(error);
  });
}

try axios

npm install --save axios

state = {data:[]};
    componentWillMount() {
                 axios.get('http://bitcfeedcms.rf.gd/script.php')
                 .then(response =>this.setState({data:response.data}));
    }