React-native: Images not showing in android device; but shows perfectly in emulator

Question

I am working on a sample react native project. And almost all features except the <Image source=''/> work well with it. The image shows well in android emulator supplied with android studio and genymotion, but does not work on any real devices (moto G3 turbo, nexus 5, galaxy s4 etc...). I don't know what went wrong with my code. Here is my code

import React, { Component } from 'react';
import {
  AppRegistry,
  StyleSheet,
  Text,
  View,
  Image
} from 'react-native';

class ImageTester extends Component {
  render() {
    return (
      <View style={styles.container}>
        <Text style={styles.welcome}>
          Welcome to React Native!
        </Text>
        <Text style={styles.instructions}>
          To get started, edit index.android.js
        </Text>
        <Text style={styles.instructions}>
          Double tap R on your keyboard to reload,{'\n'}
          Shake or press menu button for dev menu
        </Text>
        <Image source={require('./img/first_image.png')}></Image>
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
    backgroundColor: '#F5FCFF',
  },
  welcome: {
    fontSize: 20,
    textAlign: 'center',
    margin: 10,
  },
  instructions: {
    textAlign: 'center',
    color: '#333333',
    marginBottom: 5,
  },
});

AppRegistry.registerComponent('ImageTester', () => ImageTester);

project structure:

React-native version: react-native: 0.32.1

Answer 1

The problem was with my bundle packaging command. As @luwu said in his comment, I checked this , and surprised that there is no difference with mine. Then only I noticed a message while running the command

"Assets destination folder is not set, skipping..."

That message was bit confusing since bundle was already created in the assets folder. The 'Assets' in that messages actually indicates my images. And I solved the issues with the following command:

react-native bundle --platform android --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --dev false --reset-cache --assets-dest android/app/src/main/res/

Answer 2

Another solution for the same issue of assets not bundled in development.

Add the following line to your app/build.gradle file in the section project.ext.react :

project.ext.react = [
    ... other properties
    bundleInDebug: true // <-- add this line
]

From the docs in the starter project gradle file:

By default, bundleDebugJsAndAssets is skipped, as in debug/dev mode we prefer to load the bundle directly from the development server.

Answer 3

I was having a similar issue on my project. My problem was that the Image is displaying ok on iOS but not showing on android (devices).

So my issue got fixed by adding the following header to my Image:

  <Image
    source={{
      uri: 'https://imageurladdress/img.png',
      headers: {
        Accept: '*/*',
      },
    }}
    style={styles.imageStyle}
  />

So, for some reason the iOS was already working without the need to add this header in the request. But the point is that after add the headers field, the Image is showing correct on both iOS and android devices.

Answer 4

What helped me personally (none of the solutions here worked) is opening external image from the https://.... and it worked. So I decided to give a try to use 'file://' + DocumentDirectoryPath + '/' + item.image and it worked.

Answer 5

i had the same issue. turns out i had import image component from react-native-elements instead of rect-native.fixed my case

Answer 6

In my case two things were causing problems

First

I run my backend at http://localhost:3000 and any image asset would have URI similar to

http://localhost:3000/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOns

but the android simulator exposes it as

http://10.0.2.2:3000/.....

So http://localhost:3000 is inaccessible in simulator. So I made sure appropriate host is set from backend looking which device is requesting the API.

Second

In params supplied to <Image> component, I used url key(property) which was working fine in IOS but I needed to change it to uri for android.