react native share image url - react-native

there are two part of codes, the first : a page with list of touchable image and the second: with onPress the image open in new page in full size.
till now every thing is fin. but in new page when I want to share image url, it doesn't work!!!
here is some part of my code:
part one:
const Images = [
{ url: require("../Images/dress.jpg") },
{ url: require("../Images/111.jpg") },
{ url: require("../Images/222.jpg") },
...
]
export class Dress extends Component {
render() {
return (
...
<View>
{Images.map((image, index) => (
<TouchableOpacity
key={index}
onPress={() => this.props.navigation.navigate("ShowImage", {url:image.url})}
>
<Image source={image.url}/>
</TouchableOpacity>
))}
</View>...
part two (above onPress direct to new page)
export class ShowImage extends Component {
shareMessage = async (PhotoLink) => {
console.log('myUrl'+PhotoLink)
const result = await Share.share({
title: "title goes here",
message: ("hi"+PhotoLink),
});
render() {
return (
...
<TouchableOpacity
onPress={()=>this.shareMessage(this.props.route.params.url)}
>
...
when I use local image the result is: "hi3" or "hi4" or ...
when I use web image from internet the result is: "hi[object Object]"
I don't know where is the problem!! plz help me :)

Edit your Part1 code like this:
const Images = [
{ url: "../Images/dress.jpg" },
{ url: "../Images/111.jpg" },
{ url: "../Images/222.jpg" },
]
export class Dress extends Component {
render() {
return (
<View>
{Images.map((image, index) => (
<TouchableOpacity
key={index}
onPress={() => this.props.navigation.navigate("ShowImage", {url:image.url})}>
<Image source={require(image.url)}/>
</TouchableOpacity>
))}
</View>
)
}
}
and Part2 like this:
export class ShowImage extends Component {
shareMessage = async (PhotoLink) => {
console.log('myUrl'+PhotoLink)
const result = await Share.share({
title: "title goes here",
message: ("hi"+PhotoLink),
});
render() {
return (
...
<TouchableOpacity
onPress={()=>this.shareMessage(this.props.route.params.url)}
>
...
and try again. when you require an image it is converted to an object.
and if you want to use web image url, you can simply edit Part1 like this:
const Images = [
{ url: "https://en.wikipedia.org/wiki/File:Image_created_with_a_mobile_phone.png" },
]
export class Dress extends Component {
render() {
return (
<View>
{Images.map((image, index) => (
<TouchableOpacity
key={index}
onPress={() => this.props.navigation.navigate("ShowImage", {url:image.url})}>
<Image source={{uri: image.url}}/>
</TouchableOpacity>
))}
</View>
)
}
}

Related

How to get ref in flat list item onpress?

I am trying to capture screen with react-native-view-shot. On press this.refs.viewShot.capture showing undefined.
Here is my code
Flat list code:
<FlatList
ref={(list) => this.myFlatList = list}
data={this.state.newsListArray}
keyExtractor={this._keyExtractor}
renderItem={this.renderRowItem}
/>
render on press link:
<TouchableOpacity onPress={ () => {
Platform.OS === 'ios' ?
this._captureScreenIos('5c63f7307518134a2aa288ce') :
this._captureScreenAndroid('5c63f7307518134a2aa288ce')
}}>
<View style={{flexDirection:'row'}}>
<Icon name="share-alt" size={16} color="#ffb6cf" />
<Text style={{paddingLeft:6,fontSize:12,fontWeight:'500'}}>Share News</Text>
</View>
</TouchableOpacity>
And that's the function:
_captureScreenIos = (refId) => {
console.log("Clicked for IOS");
this.changeLoaderStatus();
var thisFun = this;
var viewShotRef = 'viewShot-5c63f7307518134a2aa288ce';
this.myFlatList.viewShot.capture({width: 2048 / PixelRatio.get(), height: 2048 / PixelRatio.get()}).then(res => {
RNFetchBlob.fs.readFile(res, 'base64').then((base64data) => {
console.log("base64data",base64data)
let base64Image = `data:image/jpeg;base64,${base64data}`;
const shareOptions = {
title: "My Beauty Squad",
//message: "Download my beauty squad with below link."+ "\n" + "https://itunes.apple.com/uk/app/my-beauty-squad/id1454212046?mt=8" ,
url: base64Image,
subject: "Share news feed"
};
Share.open(shareOptions);
thisFun.changeLoaderStatus();
})
}).catch(error => {
console.log(error, 'this is error');
this.changeLoaderStatus();
})
}
Please let me know if anyone having a solution for the same.
**This is my app screen **
It's blur when we have long list items.
Try this:
import { captureRef } from react-native-view-shot
constructor(props) {
super(props);
this.refs = {};
}
renderItem = ({item, index}) => (
<TouchableOpacity
onPress={ () => {
captureRef(this.refs[`${index}`], options).then(.....)
}
>
<View
style={{flexDirection:'row'}}
ref={shot => this.refs[`${index}`] = shot}
>
...........
</View>
</TouchableOpacity>
)
React Native View Shot
I hope it help you.
That is a good amount of code. Try https://reactnativecode.com/take-screenshot-of-app-programmatically/
setting the state and try passing in the object you are referencing.
export default class App extends Component {
constructor(){
super();
this.state={
imageURI : 'https://reactnativecode.com/wp-content/uploads/2018/02/motorcycle.jpg'
}
}
captureScreenFunction=()=>{
captureScreen({
format: "jpg",
quality: 0.8
})
.then(
uri => this.setState({ imageURI : uri }),
error => console.error("Oops, Something Went Wrong", error)
);
}
Here is answer:
constructor(props) {
this.screenshot = {};
}
This is my function:
_captureScreenIos(itemId) {
this.changeLoaderStatus();
var thisFun = this;
var viewShotRef = itemId;
captureRef(this.screenshot[itemId],{format: 'jpg',quality: 0.8}).then(res => {
RNFetchBlob.fs.readFile(res, 'base64').then((base64data) => {
console.log("base64data",base64data)
let base64Image = `data:image/jpeg;base64,${base64data}`;
const shareOptions = {
title: "My Beauty Squad",
//message: "Download my beauty squad with below link."+ "\n" + "https://itunes.apple.com/uk/app/my-beauty-squad/id1454212046?mt=8" ,
url: base64Image,
subject: "Share news feed"
};
Share.open(shareOptions);
thisFun.changeLoaderStatus();
})
}).catch(error => {
console.log(error, 'this is error');
this.changeLoaderStatus();
})
}
This is the view:
<View collapsable={false} ref={(shot) => { this.screenshot[itemId] = shot; }} >
//some content here
<TouchableOpacity onPress={ () => {
Platform.OS === 'ios' ?
this._captureScreenIos(itemData.item._id) :
this._captureScreenAndroid(itemData.item._id)
}}>
<View style={{flexDirection:'row'}}>
<Icon name="share-alt" size={16} color="#ffb6cf" />
<Text style={{paddingLeft:6,fontSize:12,fontWeight:'500'}}>Share News</Text>
</View>
</TouchableOpacity>
</View>

View inside curly braces not showing

I'm new in ReactNative. I'm following a tutorial from Udemy. I've been trying to show a value from a variable. its working in the instructor's video but not in my code. the code is given below:
export default class App extends React.Component {
state = {
placeName: '',
places: []
}
placeNameChangedHandler = val => {
this.setState({
placeName: val
})
}
placeSubmitHandler = () => {
if (this.state.placeName.trim() === "") {
return;
}
this.setState(prevState => {
return {
places: prevState.places.concat(prevState.placeName)
}
})
}
render() {
const placesOutput = this.state.places.map(place => {
<Text>{place}</Text>
})
return (
<View style={styles.container}>
<View style={styles.inputContainer}>
<TextInput
placeholder="Type something"
style={styles.placeInput}
value={this.state.placeName}
onChangeText={this.placeNameChangedHandler}/>
<Button
style={styles.placeButton}
onPress={this.placeSubmitHandler}
title="Add"/>
</View>
<View>
{this.placesOutput}
</View>
</View>
);
}
}
but the {placeOutput} is not showing anything. its working in the instructor's video but not in my code. What am I doing wrong?
You aren't returning anything in your map() function. Your render function should look like this:
render() {
const placesOutput = this.state.places.map(place => {
return <Text>{place}</Text> //Added return statement
})
return (
<View style={styles.container}>
<View style={styles.inputContainer}>
<TextInput
placeholder="Type something"
style={styles.placeInput}
value={this.state.placeName}
onChangeText={this.placeNameChangedHandler}/>
<Button
style={styles.placeButton}
onPress={this.placeSubmitHandler}
title="Add"/>
</View>
<View>
{this.placesOutput}
</View>
</View>
);
}
All I did was add a return statement in your this.state.places.map() function.

Shoutem fetch data not displaying

First I want to start by saying I am a total noob at React Native and Shoutem. I am not sure if I should write Shoutem or React Native in the subject of my questions, but here is my problem.
I have two screens:
Screen1.js
Screen2.js
Screen1 displays a list of items returned from a fetch. Once I click on the item, it will open the second screen which is the details screen.
I am passing data from screen1 to screen2. In screen2 I need to make another fetch call for different data, but it does not work. I am doing exactly the same thing on both screens.
Here is my code for Screen1:
import React, {
Component
} from 'react';
import {
ActivityIndicator,
TouchableOpacity
} from 'react-native';
import {
View,
ListView,
Text,
Image,
Tile,
Title,
Subtitle,
Overlay,
Screen
} from '#shoutem/ui';
import {
NavigationBar
} from '#shoutem/ui/navigation';
import {
navigateTo
} from '#shoutem/core/navigation';
import {
ext
} from '../extension';
import {
connect
} from 'react-redux';
export class List extends Component {
constructor(props) {
super(props);
this.renderRow = this.renderRow.bind(this);
this.state = {
isLoading: true,
content: null,
}
}
componentDidMount() {
return fetch('https://www.cannabisreports.com/api/v1.0/strains').then((response) => response.json()).then((responseData) => {
this.setState({
isLoading: false,
content: responseData
});
}).done();
}
renderRow(rowData) {
const { navigateTo } = this.props;
return (
//<Text>{rowData.name}, {rowData.createdAt.datetime}</Text>
<TouchableOpacity onPress={() => navigateTo({
screen: ext('Strain'),
props: { rowData }
})}>
<Image styleName="large-banner" source={{ uri: rowData.image &&
rowData.image ? rowData.image : undefined }}>
<Tile>
<Title>{rowData.name}</Title>
<Subtitle>none</Subtitle>
</Tile>
</Image>
</TouchableOpacity>
);
}
render() {
if (this.state.isLoading) {
return (
<View style={{flex: 1, paddingTop: 20}}>
<ActivityIndicator />
</View>
);
}
return (
<View style={{flex: 1, paddingTop: 20}}>
<ListView
data={this.state.content.data}
renderRow={rowData => this.renderRow(rowData)}
/>
</View>
);
}
}
// connect screen to redux store
export default connect(
undefined,
{ navigateTo }
)(List);
I am passing rowData to Screen2. I then need to make another fetch calling using data from rowData as it is a path parameter needed for the API call in Screen2.
So basically I need to make a fetch call in Screen2 like this:
fetch('https://mywebsite.com/'+rowData.something+'/myotherdata')
.then((response) => response.json())
.then((responseJson) => {
this.setState({
content: responseJson.data
})
})
.catch((error) => {
console.error(error);
});
Here is my code for screen2:
export default class Strain extends Component {
constructor(props) {
super(props);
this.state = {
content: null,
}
}
componentDidMount() {
return fetch('https://mywebsite.com/'+rowData.something+'/myotherdata')
.then((response) => response.json())
.then((responseJson) => {
this.setState({
content: responseJson.data
})
})
.catch((error) => {
console.error(error);
});
}
renderRow(dataContent) {
return (
<Text>{dataContent.name}</Text>
// This does not work either -> <Text>{dataContent}</Text>
);
}
render() {
const { rowData } = this.props; //This is coming from screen1.js
return (
<ScrollView style = {{marginTop:-70}}>
<Image styleName="large-portrait" source={{ uri: rowData.image &&
rowData.image ? rowData.image : undefined }}>
<Tile>
<Title>{rowData.name}</Title>
<Subtitle>{rowData.createdAt.datetime}</Subtitle>
</Tile>
</Image>
<Row>
<Text>Seed Company: {rowData.seedCompany.name}</Text>
</Row>
<Divider styleName="line" />
<Row>
<Icon name="laptop" />
<View styleName="vertical">
<Subtitle>Visit webpage</Subtitle>
<Text>{rowData.url}</Text>
</View>
<Icon name="right-arrow" />
</Row>
<Divider styleName="line" />
<View style={{flex: 1, paddingTop: 20}}>
<ListView
data={content}
renderRow={dataContent => this.renderRow(dataContent)}
/>
</View>
<Divider styleName="line" />
</ScrollView>
);
}
}
My fetch URL returns data like this:
{
data: {
name: "7.5833",
another_name: "8.6000",
different_name: "5.7500",
}
}
This only returns one data object like what you see above.
When I run the code I get this error:
null is not an object (evaluating 'Object.keys(e[t])')
Please let me know if you need me to provide more info.
I have tried so many different things and nothing seems to work so I am in need of some help. What am I doing wrong?
Not sure why this works but it does.
I used a function to fetch my data and then call the function in componentDidMount like this:
getData() {
return fetch('https://mywebsite.com/myotherdata')
.then((response) => response.json())
.then((responseJson) => {
this.setState({
data: responseJson.data
});
})
.catch((error) => {
console.error(error);
});
}
componentDidMount() {
this.getData();
}
Then to get the values from the JSON response I am doing this:
this.state.data.name
I am having another issue, but I will create another question.

React Native onPress active state change image source on Carousel

Trying to change image of a button on my carousel elements, currently it (below code) changes all the images when I click any of them. I'd like change that only current carousel's image. Any ideas? Thanks
class CarouselImages extends React.Component {
constructor(props) {
super(props);
this.state = {
myImagesArray: [
{
key: 1,
title: 'Category'
},
{
key: 2,
title: 'Category'
},
{
key: 3,
title: 'Category'
}
],
icon_active: false,
}
activateCarouselButton = a => {
const newState = Object.assign(
{},
{
icon_active: false,
},
{ [a]: true },
)
this.setState(newState);
}
}
render = () => {
const { icon_active } = this.state;
var myCarousel = this.state.myImagesArray.map(function (index) {
return (
<View key={index}>
<TouchableHighlight onPress={() => activateCarouselButton('icon_active')} >
<Image
source={icon_active ? require('../Image/active#2x.png') : require('../Image/disabled#2x.png')} />
</TouchableHighlight>
</View>
);
});
return (
<View>
<Carousel
style={{ backgroundColor: '#fff' }}>
{myCarousel}
</Carousel>
</View>
)
}
}
You need to hold key of the icon in the icon_active state, not a boolean. This gives you a hunch on how to do it:
render() {
const { icon_active } = this.state;
return (
this.state.myImagesArray.map((image) => {
return (
<View key={image.key}>
<TouchableHighlight onPress={() => activateCarouselButton(image.key)}>
<Image source={icon_active === image.key ? require('../Image/active#2x.png') : require('../Image/disabled#2x.png')} />
</TouchableHighlight>
</View>
)
})
)
}
<Image source={this.props.secureTextEntry ?
require('../../assets/images/signup/Showpassword.png') :
require('../../assets/images/signup/Hidepassword.png')} />

Cards of Native Base dynamically in react native and Firebase

I have data to extract from Firebase and i did. It's displayed perfectly fine in a listview. But now i have to display them in cards from the native base . this is the code i tried https://github.com/GeekyAnts/NativeBase/issues/347 but i get an error : undefined is not an object
import CardItem from'./CardItem'
import {Container, Content, Card, Body, Title} from 'native-base';
export default class SixteenTab extends Component {
constructor(props) {
super(props);
this.itemsRef = this.getRef().child('docs/topics/topics_2016/');
}
componentDidMount() {
// start listening for firebase updates
this.listenForItems(this.itemsRef);
}
getRef() {
return firebaseApp.database().ref();
}
listenForItems(itemsRef) {
itemsRef.on('value', (snap) => {
var items = [];
snap.forEach((child) => {
items.push({
title: child.val().title,
_key: child.key
});
});
this.setState({
items: items
});
});
}
render() {
return (
<View>
<Card dataArray={this.state.items}
renderRow={(item) => this._renderItem(item)}>
</Card>
</View>
)
}
_renderItem(item) {
return (
<CardItem item={item}/>
);
}
}
CardItem Page
class CardItem extends Component {
render() {
return (
<View style={styles.listItem}>
<Text style={styles.liText}>{this.props.item.title}</Text>
</View>
);
}
}
That's the code i used but i keep getting an error like the image below --> any idea please
PS: all the items are been extracted from firebase database correctly, since i can see them in the console
After putting this line this.state = { items: [] }; in the constructor, i get this warning
when trying the second method of Irfan , i get this warning and nothing is displayed in the screen
that's the final i wrote and still not working
export default class SixteenTab extends Component {
constructor(props) {
super(props);
this.itemsRef = this.getRef().child('docs/topics/topics_2016/');
this.state = { items: null };
}
componentDidMount() {
this.listenForItems(this.itemsRef);
}
componentWillMount() {
this.setState({
items:[]
});
}
getRef() {
return firebaseApp.database().ref();
}
listenForItems(itemsRef) {
itemsRef.on('value', (snap) => {
var items = [];
snap.forEach((child) => {
items.push({
title: child.val().title,
_key: child.key
});
});
this.setState({
items: items
});
});
}
render() {
return (
<View>
<Content>
<Card>
{
this.state.items.map((item,index)=>{
return (
<CardItem key={index}>
<View>
<Text>{item.title}</Text>
</View>
</CardItem>
)
})
}
</Card>
</Content>
</View>
)
}
_renderItem(item) {
return (
<ListItem item={item}/>
);
}
As per native base doc, dataArray and renderRow is not support Card Component. So should update your render function.
render() {
return (
<Container>
<Content>
<Card>
{
this.state.items.map((item, index)=>{
return (
<CardItem key={index}>
<View>
<Text>{item.title}</Text>
</View>
</CardItem>
)
})
}
</Card>
</Content>
</Container>
)
}
If you want your cards SEPARATELY , you need to put the key attribute in Card, not in CardItem! Like this:
render() {
return (
<Container>
<Content>
{
this.state.items.map((item, index)=>{
return (
<Card key={index}>
<CardItem>
<Text>{item.title}</Text>
</CardItem>
<Card/>
)
})
}
</Content>
</Container>
)
}