Expo React Native encountering a network request failure while trying to fetch API and load a local JSON

I am attempting to load a static json file from a local source in my Expo managed application using the following code snippet.

useEffect(()=>{

getData()},['']);

function getData(){


fetch('../Audio/AudiosObj.json',{'Content-Type':'application/json','Accept': application/json'}).then((data)=>(console.log(data)).catch((err)=>(console.log(err)) }

Upon running the application, I encountered an error message stating "Network request failed". Can you provide any insights into what may be causing this issue?

javascriptjsonreact-nativeexpofetch-api

Answer №1

Instead of using fetch to retrieve JSON data, you can simply import the JSON file directly with an import statement.

import AudiosObjJSON from '../Audio/AudiosObj.json';

If you do choose to use fetch, make sure to provide the proper headers like this:

fetch('../Audio/AudiosObj.json',{
   headers: { 
     'Content-Type': 'application/json',
     'Accept': 'application/json'
   }
})
.then(...)
.catch(...);

However, I recommend utilizing the import statement as it is more efficient and easier to read compared to using fetch.

Additionally, the fetch method may not work correctly after compiling the app and including all assets due to potential issues with relative paths.

On the other hand, when using the import statement, the file will be integrated into the bundle itself and should not cause any problems post-compilation.

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