React-Native：访问JSON

Question

Currently I want to use the JSON data I fetched. My data looks like this:

{

"0": {
    "date": "2018-12-06T20:49:02.489000",
    "encoded": "B64Encoded",
    "height": "390",
    "name": "image2.jpg",
    "width": "390"
},
"1": {
    "date": "2018-12-06T20:49:02.489000",
    "encoded": "B64Encoded",
    "height": "136",
    "name": "index.jpg",
    "width": "371"
}
}

My problem lays in accessing the JSON Data. All then time, when I try

fetch('http://127.0.0.1:8888')
    .then((response) => response.json())
    .then((responseJson) => {
        this.setState({
            jsonData: responseJson[0].name
        })
    });

I end up with an undefined object. I believe the problem is in how the JSON is defined. How can I access it correctly?

Answer 1

fetch('http://127.0.0.1:8888')
.then((response) => response.json())
.then((responseJson) => {
    this.setState({
        jsonData: responseJson['0'].name
    })
});

notice the quotes '0' around the 0