I am trying to capture, and upload an image to a server from react native, however I get the following error when I make the http request:

[TypeError: Network request failed]

Here is my code, I have followed this tutorial:

import React from 'react';
import {View, Image, Button} from 'react-native';
import ImagePicker from 'react-native-image-picker';

export default class App extends React.Component {
  state = {
    photo: null,
  };

  createFormData = (photo) => {
    const data = new FormData();

    data.append('photo', {
      name: photo.fileName,
      type: photo.type,
      uri:
        Platform.OS === 'android'
          ? photo.uri
          : photo.uri.replace('file://', ''),
    });

    data.append('id', 1);
    return data;
  };

  handleChoosePhoto = () => {
    const options = {
      noData: true,
    };
    ImagePicker.launchImageLibrary(options, (response) => {
      if (response.uri) {
        this.setState({photo: response});
      }
    });
  };

  handleUploadPhoto = () => {
    fetch('http://192.168.1.104:3000/', {
      method: 'POST',
      body: this.createFormData(this.state.photo),
    })
      .then((response) => response.text())
      .then((response) => {
        console.log('upload success', response);
      })
      .catch((error) => {
        console.log('upload error', error);
      });
  };

  render() {
    const {photo} = this.state;
    return (
      <View style={{flex: 1, alignItems: 'center', justifyContent: 'center'}}>
        {photo && (
          <React.Fragment>
            <Image
              source={{uri: photo.uri}}
              style={{width: 300, height: 300}}
            />
            <Button title="Upload" onPress={this.handleUploadPhoto} />
          </React.Fragment>
        )}
        <Button title="Choose Photo" onPress={this.handleChoosePhoto} />
      </View>
    );
  }
}

I've tried:

• Add "Content: multipart/form-data" to http request headers
• Add Accept: Accept: application/json" to http request headers

I have noticed that the request fails, only when I add the photo object to the "FormData", that is, the http request runs correctly when I remove the following code:

data.append('photo', {
      name: photo.fileName,
      type: photo.type,
      uri:
        Platform.OS === 'android'
          ? photo.uri
          : photo.uri.replace('file://', ''),
    });

Edit 02-07-2020

I finally found the solution here:

I am trying to capture, and upload an image to a server from react native, however I get the following error when I make the http request:

[TypeError: Network request failed]

Here is my code, I have followed this tutorial:

https://heartbeat.fritz.ai/how-to-upload-images-in-a-react-native-app-4cca03ded855

import React from 'react';
import {View, Image, Button} from 'react-native';
import ImagePicker from 'react-native-image-picker';

export default class App extends React.Component {
  state = {
    photo: null,
  };

  createFormData = (photo) => {
    const data = new FormData();

    data.append('photo', {
      name: photo.fileName,
      type: photo.type,
      uri:
        Platform.OS === 'android'
          ? photo.uri
          : photo.uri.replace('file://', ''),
    });

    data.append('id', 1);
    return data;
  };

  handleChoosePhoto = () => {
    const options = {
      noData: true,
    };
    ImagePicker.launchImageLibrary(options, (response) => {
      if (response.uri) {
        this.setState({photo: response});
      }
    });
  };

  handleUploadPhoto = () => {
    fetch('http://192.168.1.104:3000/', {
      method: 'POST',
      body: this.createFormData(this.state.photo),
    })
      .then((response) => response.text())
      .then((response) => {
        console.log('upload success', response);
      })
      .catch((error) => {
        console.log('upload error', error);
      });
  };

  render() {
    const {photo} = this.state;
    return (
      <View style={{flex: 1, alignItems: 'center', justifyContent: 'center'}}>
        {photo && (
          <React.Fragment>
            <Image
              source={{uri: photo.uri}}
              style={{width: 300, height: 300}}
            />
            <Button title="Upload" onPress={this.handleUploadPhoto} />
          </React.Fragment>
        )}
        <Button title="Choose Photo" onPress={this.handleChoosePhoto} />
      </View>
    );
  }
}

I've tried:

• Add "Content: multipart/form-data" to http request headers
• Add Accept: Accept: application/json" to http request headers

I have noticed that the request fails, only when I add the photo object to the "FormData", that is, the http request runs correctly when I remove the following code:

data.append('photo', {
      name: photo.fileName,
      type: photo.type,
      uri:
        Platform.OS === 'android'
          ? photo.uri
          : photo.uri.replace('file://', ''),
    });

Edit 02-07-2020

I finally found the solution here:

https://github.com/facebook/react-native/issues/28551#issuecomment-610652110

• javascript
• node.js
• react-native
• fetch

• I'm usign the follow packages "react": "16.11.0", "react-native": "0.62.2", "react-native-image-picker": "^2.3.1" The phone I'm developing is a Xiaomi Redmi Note 5 – Juan Diego Cardona Marin Commented Jun 18, 2020 at 13:56
• Have you tried adding 'file://' + photo.path as androird's uri? – Chathurika Senani Commented Nov 21, 2020 at 6:54
• people arriving here due to the "network request failed" error might be interested in reading this – otaku Commented Nov 3, 2021 at 18:21

6 Answers 6

The first issue is with the imageUri itself. If let’s say photo path is /user/.../path/to/file.jpg. Then file picker in android would give imageUri value as file:/user/.../path/to/file.jpg whereas file picker in iOS would give imageUri value as file:///user/.../path/to/file.jpg.

The solution for the first issue is to use file:// instead of file: in the formData in android.

The second issue is that we are not using proper mime-type. It is working fine on iOS but not on Android. What makes this worse is that the file-picker package gives the type of the file as “image” and it does not give proper mime-type.

The solution is to use proper mime-type in the formData in the field type. Ex: mime-type for .jpg file would be image/jpeg and for .png file would be image/png. We do not have to do this manually. Instead, you can use a very famous npm package called mime.

import mime from "mime";

const newImageUri =  "file:///" + imageUri.split("file:/").join("");

const formData = new FormData();
formData.append('image', {
 uri : newImageUri,
 type: mime.getType(newImageUri),
 name: newImageUri.split("/").pop()
}); 

This solution also works:

I had same this issue in my project with react-native version 0.62. I updated flipper to "0.41.0" and it worked.

In gradle.properities

FLIPPER_VERSION=0.41.0

gradle.properties is located at PROJECT_ROOT/android

const URL = "ANY_SERVER/upload/image"
  const xhr = new XMLHttpRequest();
  xhr.open('POST', url); // the address really doesnt matter the error occures before the network request is even made.
  const data = new FormData();
  data.append('image', { uri: image.path, name: 'image.jpg', type: 'image/jpeg' });

  xhr.send(data);
  xhr.onreadystatechange = e => {
    if (xhr.readyState !== 4) {
      return;
    }

    if (xhr.status === 200) {
      console.log('success', xhr.responseText);
    } else {
      console.log('error', xhr.responseText);
    }
  };

had a similar issue a few days ago. The problem for me was that photo.type return an incorrect type. So i just add it manually.

fd.append('documentImages', {
      name: getImgId(img.uri) + '.jpg',
      type: 'image/jpeg',
      uri: Constants.platform.android
        ? img.uri
        : img.uri.replace('file://', ''),
    })

const launchCamera = () => {
  let options = {
    storageOptions: {
      skipBackup: true,
      path: "images",
    },
  };
  ImagePicker.launchCamera(options, (response) => {
    console.log("Response = ", response);
    if (response.didCancel) {
      console.log("User cancelled image picker");
    } else if (response.error) {
      console.log("ImagePicker Error: ", response.error);
    } else if (response.customButton) {
      console.log("User tapped custom button: ", response.customButton);
      alert(response.customButton);
    } else {
      const source = { uri: response.uri };
      console.log(
        "response in image pleae chec nd xcjn",
        JSON.stringify(response)
      );
      this.setState({
        filePath: response,
        fileData: response.data,
        fileUri: response.uri,
      });
    }
    imageUpload(response);
  });
};

const imageUpload = (imageUri) => {
  console.log('imageuril',imageUri);
  const newImageUri =  "file:///" + imageUri.assets[0].uri.split("file:/").join("");
  const imageData = new FormData()
  imageData.append("file", {
    uri: newImageUri,
    type: mime.getType(newImageUri),
    name: newImageUri.split("/").pop()
  })
  console.log("form data", imageData)
  axios({
    method: 'post',
    url: 'https://example.com/admin/api/v1/upload_reminder/1',
    data: imageData
  })
    .then(function (response) {
      console.log("image upload successfully", response.data)
    }).then((error) => {
      console.log("error riased", error)
    })

}

Use this code 100% working

After struggling for almost 2 days i got the solutions. Some Mobile devices doesn't add file:// before the image uri which is causing the issue. So you have to hardcode that before the image uri.

formData1.append('photo', {
          uri: "file://"+formData.photo,
          name: `photo.${fileType}`,
          type: `image/${fileType}`,
        });