I have a list that will display a certain number of images in a row. What I want is for there to be space between each image. I was trying to use padding but it has not worked.
Here is what I have:
class ImageList extends Component {
constructor(props) {
super(props);
const ds = new ListView.DataSource({rowHasChanged: (r1, r2) => r1 !== r2});
this.state = {
dataSource: ds.cloneWithRows([
require('./images/ex1.jpg'), require('./images/ex2.jpg'), require('./images/ex3.jpg')
])
};
}
render() {
return (
<View>
<ListView
contentContainerStyle={styles.list}
dataSource={this.state.dataSource}
renderRow={(rowData) => <Image source={rowData} style={styles.imageSize}/>}
/>
</View>
);
}
}
var styles = StyleSheet.create({
imageSize: {
//newWidth is the width of the device divided by 4.
//This is so that four images will display in each row.
width: newWidth,
height: newWidth,
padding: 2
},
list: {
flexDirection: 'row',
flexWrap: 'wrap'
}
});
In the main file the code is called:
class Main extends Component {
render(){
return(
<ScrollView>
<View style={{flex: 1}}>
<View>
<ImageList/>
</View>
</View>
</ScrollView>
);
}
};
I have tried putting padding in each View that I have to see if any it works. But so far nothing is working.
I have wrapped the rawData with a view like this:
render() {
return (
<View>
<ListView automaticallyAdjustContentInsets={false}
contentContainerStyle={styles.list}
dataSource={this.state.dataSource}
renderRow={(rowData) => <View style={{padding: 1}}><Image source={rowData} style={styles.imageSize}/></View>}
/>
</View>
But this has caused a problem. When I try to have more than 3 images, only the first 3 appear. The rest are nowhere to be found.
Related
When I try to load an image by using require, the image does not load but when I load the same image from a URL, the image loads. Here is the snippet of code that I am calling the image from
class Home extends React.Component {
render() {
return (
<ScrollView
noSpacer={true}
noScroll={true}
style={styles.container}
showVerticalSCrollIndicator = {false}
showHorizontalScrollIndicator = {false}
>
{this.state.loading ? (
<ActivityIndicator
style={[styles.centering, styles.gray]}
color="#5d38aa"
size="large"
/>
) : (
<div>
<Header title={this.state.user.name} />
<div id='image'>
<Image
source={require('./arrow.png')}
style={styles.image}
/>
</div>
</div>
)}
</ScrollView>
);
}
}
The image is loaded here
<Image
source={require('./arrow.png')}
style={styles.image}
/>
Please make sure that you give the right path to your image.
You can use the source as an object:
<Image source={{ uri: 'something.jpg' }} />
But what you have should work, check your path.
There were few errors here and there, I think you were trying to port ReactJS code to RN and not surprisingly there were few slip-ups like you used div instead and View and small things like that, also boxShadow was not working so I removed that.
After a few tweaks code is working and images are loading.
As I stated earlier, I have omitted the User component and sanityClient, you can implement them later.
Here is the working home.js after changes.
import React from "react";
import {
ScrollView,
ActivityIndicator,
StyleSheet,
Image,
ImageBackground,
View,
} from "react-native";
// import UserList from "./user-list";
import Header from "./header";
// import sanityClient from "";
// import BackButton from "./back-button";
// import User from "./user";
// import {Asset} from 'expo-asset';
// const imageURI = Asset.fromModule(require('./arrow.png')).uri;
// const image = require("./assets/aoeu.jpg");
class Home extends React.Component {
state = {
user: {},
loading: true,
};
componentDidMount() {
// TODO: get users
this.getUser();
}
async getUser() {
// sanityClient
// .fetch(
// `*[ _type == "user" && emailAddress.current == "dwight#viamaven.com"]`
// )
// .then((data) => {
// console.log(data);
// this.setState({ user: data[0], loading: false });
// console.log(this.state.user);
// })
// .catch((err) => console.error(err));
// const res = await fetch("https://randomuser.me/api/?results=20");
// const { results} = await res.json();
// // console.log(results)
// this.setState({users: [...results], loading: false});
}
render() {
return (
<ScrollView
noSpacer={true}
noScroll={true}
style={styles.container}
showVerticalSCrollIndicator={false}
showHorizontalScrollIndicator={false}
>
{!this.state.loading ? (
<ActivityIndicator
style={[styles.centering, styles.gray]}
color="#5d38aa"
size="large"
/>
) : (
<View>
<Header title={"Spidy"} />
<View id="image">
<Image source={require("./arrow.png")} style={styles.image} />
</View>
{/* <User /> */}
</View>
)}
</ScrollView>
);
}
}
var styles = StyleSheet.create({
container: {
backgroundColor: "white",
width: 375,
height: 812,
// top: '50px',
},
centering: {
alignItems: "center",
justifyContent: "center",
padding: 8,
height: "100vh",
},
image: {
width: 50,
height: 50,
marginRight: 20,
// boxShadow: "0px 1px 2px 0px rgba(0,0,0,0.1)",
// boxShadow: "10px 10px 17px -12px rgba(0,0,0,0.75)",
},
});
export default Home;
Zip file containing all the changes: src
Output:
After some searching online, I have found some decent code to base my requirements on. I have successfully retrieved data from my web API and display the content on a page view a FlatList. However, the image URL retrieved from the API is not being processed and I am not sure why.
This is my results
/**
* Sample React Native App
* https://github.com/facebook/react-native
* #flow
*/
import React, { Component } from 'react';
import {
Platform,
StyleSheet,
Text,
View,
FlatList,
ActivityIndicator,
Image
} from 'react-native';
//import data from './json/FetchJsonDataExample.json';
export default class App extends Component<Props> {
constructor(props) {
super(props);
this.state = {
isLoading: true, // check if json data (online) is fetching
dataSource: [], // store an object of json data
};
}
componentDidMount() {
return fetch("https://www.apakataorang.com/wp-json/wp/v2/posts?per_page=20")
.then((response) => response.json())
.then((responseJson) => {
// set state value
this.setState({
isLoading: false, // already loading
dataSource: responseJson
});
})
.catch((error) => {
ToastAndroid.show(error.toString(), ToastAndroid.SHORT);
});
}
render() {
// show waiting screen when json data is fetching
if(this.state.isLoading) {
return(
<View style={{flex: 1, padding: 20}}>
<ActivityIndicator/>
</View>
)
}
return(
<View style={{flex: 1, paddingTop:30}}>
<FlatList
data={this.state.dataSource}
renderItem={({item}) => {
return (
<View>
<Text style={styles.info}>{item.title.rendered}</Text>
<Image
source={{uri: 'item.jetpack_featured_media_url'}}
style={{width:'100%', height: 200, resizeMode : 'stretch'}}
/>
<Text style={styles.info}>{item.jetpack_featured_media_url}</Text>
</View>
)
}}
keyExtractor={(item, index) => index.toString()}
/>
</View>
);
}
}
const styles = StyleSheet.create({
info: {
fontSize: 20,
}
});
Ideally I would like the image to display on the view.
remove single quotes from the Image component's source prop like below :
<Image
source={{uri: item.jetpack_featured_media_url}}
style={{width:'100%', height: 200, resizeMode : 'stretch'}}
/>
If you set 'item.jetpack_featured_media_url' (with a single quote) to the URI it will consider it as a path itself
Here is my code:
import React, {Component} from 'react';
import {ImagePickerIOS, Image, Text, View} from 'react-native';
class Dashboard extends Component {
constructor(props) {
super(props);
this.state = {
image: ''
};
}
componentDidMount() {
ImagePickerIOS.openSelectDialog({}, imageUri => {
this.setState({ image: imageUri });
}, error => console.log(error));
}
render() {
return (
<View>
<Text>{JSON.stringify(this.state.image)}</Text>
{ this.state.image ?
<Image style={{flex: 1}} source={{uri: this.state.image}} />
: null }
</View>
);
}
}
export default Dashboard
When you run the above code, this.state.image will have "assets-library: //asset/asset.HEIC? Id = .... & ext = HEIC".
However, is not output.
And <Image style={{width: 200, height: 200}} source={{uri: this.state.image}} />
This style property puts the IOS simulator to a black screen and exits the app.
The React Native version is 0.57.4 and the simulator is iPhone X - 12.1.
Help.
I have the same problem. But I have solved this issue.
You may need add width and height to style.
{ this.state.image ? <Image style={{height: 100, width: 100}} source={{uri: this.state.image}} /> : null }
I just want to fit an image of any size to the phone screen, so it just stays there as a background. I have the same issue with a logo I'm trying to put in the footer, I can't get it to fit in the it's view container.
I've tried many solutions I found in similar questions, using resizeMode and many width/height values, but nothing seems to work. My image is always displayed the same way.
Code for the image component:
import React from 'react';
import { View, Image } from 'react-native';
const Workspace = (props) => {
return (
<View
style = {styles.workspaceStyle}>
<Image
source={props.img}
resizeMode = 'contain'/>
{props.children}
</View>
);
};
const styles = {
workspaceStyle: {
flex: 1
}
}
export default Workspace;
My app.js render and style code:
render() {
return (
<View style = {{flex: 1}}>
<Workspace
img={require('./images/quarto.png')}/>
<ScrollView>
<Header>
<HeaderItem img={require('./images/camera.png')}/>
<HeaderItem img={require('./images/camera.png')}/>
<HeaderItem img={require('./images/camera.png')}/>
<HeaderItem img={require('./images/camera.png')}/>
</Header>
</ScrollView>
<ScrollView style = {{flexDirection: 'row'}}>
{this.sideMenuShow()}
</ScrollView>
<Footer>
<View style = {styles.logoContainerStyle}>
<Image
style = {styles.logoStyle}
source = {require('./images/magicalStage.png')}
resizeMethod = "scale"
/>
</View>
<Text style = {{color: 'white', marginTop: 5, marginBottom: 2}}>teste, teste, teste, teste</Text>
</Footer>
</View>
);
}
}
const styles = {
logoContainerStyle: {
marginRight: 5,
marginLeft: 5,
marginTop: 2,
marginBottom: 3,
width: "20%"
},
logoStyle: {
paddingLeft: 2,
paddingRight: 2
}
}
Thanks in advance!
EDIT:
In app.js, your outer view need to use width and height of the screen:
width: Dimensions.get('window').width,
height: Dimensions.get('window').height
Next, in Workspace: use stretch instead of contain ( same for your footer, add resizeMode )
resizeMode: 'stretch',
I do mine like this:
BackgroundImageStyle.js
import { StyleSheet } from 'react-native'
export default StyleSheet.create({
container: {
flex: 1,
position: 'absolute',
top: 0,
left: 0,
bottom: 0,
right: 0
},
image: {
flex: 1,
resizeMode: 'cover',
}
})
BacgroundImage.js
import React, { Component } from 'react'
import { View, Image } from 'react-native'
import styles from './BackgroundImageStyle'
export default class BackgroundImage extends Component {
render() {
return (
<View style={styles.container} >
<Image
style={styles.image}
source={this.props.source}
/>
</View>
)
}
}
then you can use it like
<BackgroundImage source={your_image}/>
I hope everything is clear, the trick is to set position absolute and then top, left, bottom, and right to 0
You can use the ImageBackground component from react-native
https://facebook.github.io/react-native/docs/imagebackground
return (
<ImageBackground source={...} style={{width: '100%', height: '100%'}}>
<Text>Inside</Text>
</ImageBackground>
);
I am building my first app with React Native, an app with a long list of images. I want to show a spinner instead of image while image is loading. It is sounds trivial but i didn't found a solution.
I think for a spinner i suppose to use ActivityIndicatorIOS , but how am i combining it with an Image component?
<Image source={...}>
<ActivityIndicatorIOS />
</Image>
Is this a right direction? Am i missing something?
I will share my solution
<View>
<Image source={{uri: this.state.avatar}} style={styles.maybeRenderImage}
resizeMode={"contain"} onLoadStart={() => this.setState({loading: true})}
onLoadEnd={() => {
this.setState({loading: false})
}}/>
{this.state.loading && <LoadingView/>}
</View>
LoadingView.js
export default class LoadingView extends Component {
render() {
return (
<View style={styles.container}>
<ActivityIndicator size="small" color="#FFD700"/>
</View>
);
}
}
const styles = StyleSheet.create({
container: {
position: "absolute",
left: 0,
right: 0,
top: 0,
bottom: 0,
opacity: 0.7,
backgroundColor: "black",
justifyContent: "center",
alignItems: "center",
}
});
Here is a complete solution to providing a custom image component with a loading activity indicator centered underneath the image:
import React, { Component } from 'react';
import { StyleSheet, View, Image, ActivityIndicator } from 'react-native';
export default class LoadableImage extends Component {
state = {
loading: true
}
render() {
const { url } = this.props
return (
<View style={styles.container}>
<Image
onLoadEnd={this._onLoadEnd}
source={{ uri: url }}
/>
<ActivityIndicator
style={styles.activityIndicator}
animating={this.state.loading}
/>
</View>
)
}
_onLoadEnd = () => {
this.setState({
loading: false
})
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
},
activityIndicator: {
position: 'absolute',
left: 0,
right: 0,
top: 0,
bottom: 0,
}
})
I will share my own solution based only on CSS manipulation, which in my opinion is easy to understand, and the code is pretty clean. The solution is a little similar to other answers, but doesn't require absolute position of any component, or creating any additional components.
The idea is to switch between showing an <Image> and <ActivityIndicator>, based on some state variable (isImageLoaded in the snippet below).
<View>
<Image source={...}
onLoad={ () => this.setState({ isImageLoaded: true }) }
style={[styles.image, { display: (this.state.isImageLoaded ? 'flex' : 'none') }]}
/>
<ActivityIndicator
style={{ display: (this.state.isImageLoaded ? 'none' : 'flex') }}
/>
</View>
Also you should set image size using flex property (otherwise image will be invisible):
const styles = StyleSheet.create({
image: {
flex: 1,
}
});
Note that you don't have to initiate the isImageLoaded variable to false in the constructor, because it will have undefined value and the if conditions will act as expected.
Just ran into the same issue. So basically you have the correct approach, but the indicator should of course only be rendered when the image is loading. To keep track of that you need state. To keep it simple we assume you have just on image in the component an keep the state for it in the same component. (The cool kids will argue you should use a higher order component for that and then pass the state in via a prop ;)
The idea then is, that your image starts out loading and onLoadEnd (or onLoad, but then the spinner gets stuck on error, which is fine or course) you re-set the state.
getInitialState: function(){ return { loading: true }}
render: function(){
<Image source={...} onLoadEnd={ ()=>{ this.setState({ loading: false }) }>
<ActivityIndicatorIOS animating={ this.state.loading }/>
</Image>
}
You could also start out with { loading: false } and set it true onLoadStart, but I'm not sure what the benefit would be of that.
Also for styling reasons, depending on your layout, you might need to put the indicator in a container view that is absolutely positioned. But you get the idea.
Yes, deafultSource and loadingIndicatorSource is not working properly. Also image component cannot contain children. Try this solutions => https://stackoverflow.com/a/62510268/11302100
You can simply just add a placeholder
import { Image } from 'react-native-elements';
<Image
style={styles(colors).thumbnail}
source={{ uri: event.image }}
PlaceholderContent={<ActivityIndicator color={colors.indicator} />}
/>
const [imageLoading, setIsImageLoading] = useState(true);
<View>
<View
style={[
{justifyContent: 'center', alignItems: 'center'},
imageLoading ? {display: 'flex'} : {display: 'none'},
]}>
<ActivityIndicator />
</View>
<Image
source={{uri: ""}}
onLoadEnd={() => {setIsImageLoading(false)}}
style={[
imageStyle,
imageLoading ? {display: 'none'} : {display: 'flex'},
]}
/>
</View>