Im building a react-native app and the screen so far loads an image from a uri into a BackgroundImage and there is also some text loading on top of the image, please see the attached image:
So what i want is to get this image and text downloaded to the device, merge them if you will?
Any suggestions are welcome..
Thanks
I would recommend you to use the ViewShot component from here.
Here's an example of how you would be able to integrate it with your project (keep in mind this uses the ES6 arrow function syntax):
class CaptureImage extends Component {
capturePic = () => {
this.refs.viewShot.capture().then(uri => {
console.log("Path to the image: ", uri); // do what you want with the url
})
};
render() {
return (
<View
<ViewShot ref="viewShot">
// your background image components go here (the image with the text you want to capture)
</ViewShot>
// rest of your code goes here
<Button onClick= {() => capturePic()} /> // button just for demonstration purpose
</View>
);
}
}
Hope you understood :)
I'm trying to replace the send icon on the WebChat. I'm able to change the colors of the existing icon but how could I replace the SVG image by another one?
If you aren't looking to fork and build the repo, an alternative is to change the element directly in the html. Generally speaking, changing the DOM directly in a React environment is not best practice, however, in this case, the results appear to be stable.
There is also an open issue on the BotFramework-WebChat repo (#1839) that is discussing making the sendBox customizable. No ETA on when that might happen, but something to keep in mind.
To include this on your page, add the code starting at const parent. Be sure to set your image size to 28x28 if you want to maintain the same size as the current arrow.
<script>
( async function () {
const res = await fetch( 'http://somesite/directline/token', { method: 'POST' } );
const { token } = await res.json();
[...]
document.querySelector( '#webchat > *' ).focus();
const parent = document.getElementsByClassName( 'main' )
const child = parent[0].children[2].getElementsByTagName('svg');
const svg = document.createElementNS("http://www.w3.org/2000/svg", "svg");
const img = document.createElement("img");
img.src= 'bot - small.png';
svg.setAttribute('height', '28');
svg.setAttribute('width', '28');
svg.appendChild(img);
child[0].replaceWith(img);
}
)().catch( err => console.error( err ) );
</script>
Hope of help!
It looks like the icon cannot be changed as a setting currently.
But you can still fork the repository and change the icon, its definition is located here: https://github.com/microsoft/BotFramework-WebChat/blob/master/packages/component/src/SendBox/Assets/SendIcon.js
import React from 'react';
const SendIcon = () => (
<svg height={28} viewBox="0 0 45.7 33.8" width={28}>
<path clipRule="evenodd" d="M8.55 25.25l21.67-7.25H11zm2.41-9.47h19.26l-21.67-7.23zm-6 13l4-11.9L5 5l35.7 11.9z" />
</svg>
);
export default SendIcon;
i have encountered an issue, when making a text editor with support of image based tags. There is a need to move those tags around freely in the text, which is being made impractical by this issue.
Basically when I start dragging an image, and then drop it on desired location, one of two results can happen: A) it works as intended and B) the image is dropped to the end/beginning of the sentence. You can see the behaviour in attached gif. Resulting behavior
I'm using react and typescript combination for creating the page with quill being inserted in a component.
// TextEditor/index.tsx
import * as React from 'react';
import * as Quill from 'quill';
import { TextEditorState, TextEditorProps } from '../#types';
import { generateDelta } from '../#utils/generateDelta';
const formats = [
'image'
];
class TextEditor extends React.Component<TextEditorProps, TextEditorState> {
constructor(props: TextEditorProps) {
super(props);
this.state = {
Editor: undefined
}
}
componentDidMount() {
const self = this;
this.setState({Editor: new Quill('#editor-container', {formats: formats, debug: 'warn'})});
}
changeText(text: string) {
if(typeof(this.state.Editor) !== 'undefined') {
this.state.Editor.setContents(generateDelta(text), 'api');
}
}
render() {
return (
<div id="editor-container"></div>
);
}
}
export default TextEditor;
And the usage of this component in another component is just
// editor.tsx
import TextEditor from '../QuillEditor/TextEditor';
...
onUpdate(text: string) {
this.refs.targetEditor.changeText(text);
}
...
render() {
return (
...
<TextEditor
ref={'targetEditor'}
/>
...
)
}
I have tried to change the text editor to just contentEditable div and that worked flawlessly, so it shouldn't be because of some css glitch.
Has anyone some idea of what could be causing this?
EDIT Feb 6:
I have found out, that this issue is manifesting only in Chrome, as IE and MS Edge did not encountered this issue. I have tried to switch off all extensions, yet the issue is still there. Private mode also didn't help.
After few days of research I have figured out what is causing the issue.
The combination of Quill and React won't work, because of the way React 'steals' input events, while creating the shadow DOM. Basically, because it tries to process my input in contenteditable div created by Quill, it causes some actions to not fire, resulting in the weird behaviour. And because Quill tries to do it by itself, outside of React DOM.
This I have proved in my simple testing project, where adding a simple input tag anywhere on the page broke down the Quill editor.
Possible solution would be to use react-quill or some other component container, however I haven't managed to make it successfully work, or write some yourself, which would incorporate Quill to React in its DOM compatible way.
I followed the Angular2 tutorial to setup a local development environment with the quick start seed [1], which worked well. Then I decided to test animations using a shortened version of the first example in [2]. The app.component.ts looks like this and it toggles the background color by clicking:
import {
Component, trigger, state, style, transition, animate
} from '#angular/core';
#Component({
selector: 'my-app',
template: `<div [#heroState]="state" (click)="toggleState()">
<h1>TourOfHeroes</h1>
</div>
`,
animations: [
trigger('heroState', [
state('inactive', style({
backgroundColor: '#eee'
})),
state('active', style({
backgroundColor: '#cfd8dc'
})),
transition('inactive => active', animate('1000ms ease-in')),
transition('active => inactive', animate('1000ms ease-out'))
])
]
})
export class AppComponent {
state = 'active';
toggleState(){
this.state = (this.state === 'active' ? 'inactive' : 'active');
}
}
This works well in Chrome and Firefox, but not in IE11. There is no transition is IE11, the background changes instantly (see [3])
I did no project setup of my own and pretty much no coding either except for the inserted animation code. Is there any way to say why this doesn't work?
Thank you!
[1]: github .com/angular/quickstart/archive/master.zip
[2]: angular .io/docs/ts/latest/guide/animations.html
[3]: i.imgur .com/WU3rvEW.gif
PS: Stackoverflow doesn't let me post more than two links, you have to copy them yourselves ...
Angular animations use web animations API and IE does not support it.
http://caniuse.com/#feat=web-animation
https://angular.io/docs/ts/latest/guide/animations.html
You can add polyfill to get it working
https://github.com/web-animations/web-animations-js
Try these steps to perform animation in IE11:
Run npm install --save web-animations-js.
Add import 'web-animations-js in polyfills.ts add it yourself;
Your animation will work in IE10+, IE11 etc, browsers.
for more details refer below link -->
https://angular.io/guide/browser-support
I'm currently building a test app using React Native. The Image module thus far has been working fine.
For example, if I had an image named avatar, the below code snippet works fine.
<Image source={require('image!avatar')} />
But if I change it to a dynamic string, I get
<Image source={require('image!' + 'avatar')} />
I get the error:
Requiring unknown module "image!avatar". If you are sure the module is there, try restarting the packager.
Obviously, this is a contrived example, but dynamic image names are important. Does React Native not support dynamic image names?
This is covered in the documentation under the section "Static Resources":
The only allowed way to refer to an image in the bundle is to literally write require('image!name-of-the-asset') in the source.
// GOOD
<Image source={require('image!my-icon')} />
// BAD
var icon = this.props.active ? 'my-icon-active' : 'my-icon-inactive';
<Image source={require('image!' + icon)} />
// GOOD
var icon = this.props.active ? require('image!my-icon-active') : require('image!my-icon-inactive');
<Image source={icon} />
However you also need to remember to add your images to an xcassets bundle in your app in Xcode, though it seems from your comment you've done that already.
http://facebook.github.io/react-native/docs/image.html#adding-static-resources-to-your-app-using-images-xcassets
This worked for me :
I made a custom image component which takes in a boolean to check if the image is from web or is being passed from a local folder.
// In index.ios.js after importing the component
<CustomImage fromWeb={false} imageName={require('./images/logo.png')}/>
// In CustomImage.js which is my image component
<Image style={styles.image} source={this.props.imageName} />
If you see the code, instead of using one of these:
// NOTE: Neither of these will work
source={require('../images/'+imageName)}
var imageName = require('../images/'+imageName)
I'm just sending the entire require('./images/logo.png') as a prop. It works!
RELEVANT IF YOU HAVE KNOWN IMAGES (URLS):
The way I hacked my way through this problem:
I created a file with an object that stored the image and the name of the image:
export const ANIMAL_IMAGES = {
dog: {
imgName: 'Dog',
uri: require('path/to/local/image')
},
cat: {
imgName: 'Cat on a Boat',
uri: require('path/to/local/image')
}
}
Then I imported the object into the component where I want to use it and just do my conditional rendering like so:
import { ANIMAL_IMAGES } from 'path/to/images/object';
let imgSource = null;
if (condition === 'cat') {
imgSource = ANIMAL_IMAGES.cat.uri;
}
<Image source={imgSource} />
I know it is not the most efficient way but it is definitely a workaround.
Hope it helps!
If you're looking for a way to create a list by looping through a JSON array of your images and descriptions for example, this will work for you.
Create a file (to hold our JSON database) e.g ProfilesDB.js:
const Profiles = [
{
id: '1',
name: 'Peter Parker',
src: require('../images/user1.png'),
age: '70',
},
{
id: '2',
name: 'Barack Obama',
src: require('../images/user2.png'),
age: '19',
},
{
id: '3',
name: 'Hilary Clinton',
src: require('../images/user3.png'),
age: '50',
},
];
export default Profiles;
Then import the data in our component and loop through the list using a FlatList:
import Profiles from './ProfilesDB.js';
<FlatList
data={Profiles}
keyExtractor={(item, index) => item.id}
renderItem={({item}) => (
<View>
<Image source={item.src} />
<Text>{item.name}</Text>
</View>
)}
/>
Good luck!
As the React Native Documentation says, all your images sources needs to be loaded before compiling your bundle
So another way you can use dynamic images it's using a switch statement. Let's say you want to display a different avatar for a different character, you can do something like this:
class App extends Component {
state = { avatar: "" }
get avatarImage() {
switch (this.state.avatar) {
case "spiderman":
return require('./spiderman.png');
case "batman":
return require('./batman.png');
case "hulk":
return require('./hulk.png');
default:
return require('./no-image.png');
}
}
render() {
return <Image source={this.avatarImage} />
}
}
Check the snack: https://snack.expo.io/#abranhe/dynamic-images
Also, remember if your image it's online you don't have any problems, you can do:
let superhero = "spiderman";
<Image source={{ uri: `https://some-website.online/${superhero}.png` }} />
First, create a file with image required - React native images must be loaded this way.
assets/index.js
export const friendsandfoe = require('./friends-and-foe.png');
export const lifeanddeath = require('./life-and-death.png');
export const homeandgarden = require('./home-and-garden.png');
Now import all your assets
App.js
import * as All from '../../assets';
You can now use your image as an interpolated value where imageValue (coming in from backend) is the same as named local file ie: 'homeandgarden':
<Image style={styles.image} source={All[`${imageValue}`]}></Image>
Important Part here:
We cannot concat the image name inside the require like [require('item'+vairable+'.png')]
Step 1: We create a ImageCollection.js file with the following collection of image properties
ImageCollection.js
================================
export default images={
"1": require("./item1.png"),
"2": require("./item2.png"),
"3": require("./item3.png"),
"4": require("./item4.png"),
"5": require("./item5.png")
}
Step 2: Import image in your app and manipulate as necessary
class ListRepoApp extends Component {
renderItem = ({item }) => (
<View style={styles.item}>
<Text>Item number :{item}</Text>
<Image source={Images[item]}/>
</View>
);
render () {
const data = ["1","2","3","4","5"]
return (
<FlatList data={data} renderItem={this.renderItem}/>
)
}
}
export default ListRepoApp;
If you want a detailed explanation you could follow the link below
Visit https://www.thelearninguy.com/react-native-require-image-using-dynamic-names
Courtesy : https://www.thelearninguy.com
you can use
<Image source={{uri: 'imagename'}} style={{width: 40, height: 40}} />
to show image.
from:
https://facebook.github.io/react-native/docs/images.html#images-from-hybrid-app-s-resources
import React, { Component } from 'react';
import { Image } from 'react-native';
class Images extends Component {
constructor(props) {
super(props);
this.state = {
images: {
'./assets/RetailerLogo/1.jpg': require('../../../assets/RetailerLogo/1.jpg'),
'./assets/RetailerLogo/2.jpg': require('../../../assets/RetailerLogo/2.jpg'),
'./assets/RetailerLogo/3.jpg': require('../../../assets/RetailerLogo/3.jpg')
}
}
}
render() {
const { images } = this.state
return (
<View>
<Image
resizeMode="contain"
source={ images['assets/RetailerLogo/1.jpg'] }
style={styles.itemImg}
/>
</View>
)}
}
To dynamic image using require
this.state={
//defualt image
newimage: require('../../../src/assets/group/kids_room3.png'),
randomImages=[
{
image:require('../../../src/assets/group/kids_room1.png')
},
{
image:require('../../../src/assets/group/kids_room2.png')
}
,
{
image:require('../../../src/assets/group/kids_room3.png')
}
]
}
when press the button-(i select image random number betwenn 0-2))
let setImage=>(){
//set new dynamic image
this.setState({newimage:this.state.randomImages[Math.floor(Math.random() * 3)];
})
}
view
<Image
style={{ width: 30, height: 30 ,zIndex: 500 }}
source={this.state.newimage}
/>
I know this is old but I'm going to add this here as I've found this question, whilst searching for a solution. The docs allow for a uri: 'Network Image'
https://facebook.github.io/react-native/docs/images#network-images
For me I got images working dynamically with this
<Image source={{uri: image}} />
<StyledInput text="NAME" imgUri={require('../assets/userIcon.png')} ></StyledInput>
<Image
source={this.props.imgUri}
style={{
height: 30,
width: 30,
resizeMode: 'contain',
}}
/>
in my case i tried so much but finally it work StyledInput component name
image inside the StyledInput if you still not understand let me know
Say if you have an application that has similar functionality as that of mine. Where your app is mostly offline and you want to render the Images one after the other. Then below is the approach that worked for me in React Native version 0.60.
First create a folder named Resources/Images and place all your images there.
Now create a file named Index.js (at Resources/Images) which is responsible for Indexing all the images in the Resources/Images folder.
const Images = {
'image1': require('./1.png'),
'image2': require('./2.png'),
'image3': require('./3.png')
}
Now create a Component named ImageView in your choice of folder. One can create functional, class or constant component. I have used the Const component. This file is responsible for returning the Image depending on the Index.
import React from 'react';
import { Image, Dimensions } from 'react-native';
import Images from './Index';
const ImageView = ({ index }) => {
return (
<Image
source={Images['image' + index]}
/>
)
}
export default ImageView;
Now from the component wherever you want to render the Static Images dynamically, just use the ImageView component and pass the index.
< ImageView index={this.qno + 1} />
Create a constant where you save the image path including require, then in source put the name of that constant.
const image = condition ? require("../img/image1.png") : require('../img/image2.png');
<Image source={image} />
Here is a simple and truly dynamic solution to the problem if you have a bigger no of files.
[Won't work for Expo Managed]
Although the question is old I think this is the simpler solution and might be helpful. But I beg a pardon for any terminological mistakes, correct me please if I do any.
INSTEAD OF USING REQUIRE WE CAN USE THE URI WITH NATIVE APP ASSETS FOR ANDROID (AND/OR iOS). HERE WE WILL DISCUSS ABOUT ANDROID ONLY
URI can easily be manipulated as per the requirement but normally it's used for network/remote assets only but works for local and native assets too. Whereas require can not be used for dynamic file names and dirs
STEPS
Open android/app/src/main/assets folder from your App.js or index.js containing directory, if the assets folder doesn't exist create one.
Make a folder named images or any NAME of your choice inside assets, and paste all the images there.
Create a file named react-native.config.js in the main app folder containing App.js or index.js.
Add these lines to the new js file:
module.exports = {
project: {
ios: {},
android: {},
},
assets: ['./assets/YOUR_FOLDER_NAME/'],
};
at the place of YOUR_FOLDER_NAME use the newly created folder's name images or any given NAME
Now run npx react-native link in your terminal from main app folder, this will link/add the assets folder in the android bundle. Then rebuild the debug app.
From now on you can access all the files from inside android/app/src/main/assets in your react-native app.
For example:
<Image
style={styles.ImageStyle}
source={{ uri: 'asset:/YOUR_FOLDER_NAME/img' + Math.floor(Math.random() * 100) + '.png' }}
/>
You should use an object for that.
For example, let's say that I've made an AJAX request to an API and it returns an image link that I'll save to state as imageLink:
source={{uri: this.state.imageLink}}