I have written a program in which I am showing a list of images in ScrollView when user clicks an image a modal is popped up and image would be shown in large size. But this is not working.
Modal is opening fine but it is not showing the image.. However I have checked the value of image in render method of Modal ie ImageViewer, value I am getting is a class object.
import React, {Component} from 'react';
import {View,Modal, ScrollView, Image, TouchableOpacity, StyleSheet} from 'react-native';
import pic1 from './images/sl13.png';
import pic2 from './images/sl14.png';
import pic3 from './images/sl15.png';
import pic4 from './images/sl16.png';
import pic5 from './images/sl17.png';
class App extends Component {
Images = [pic1, pic2, pic3, pic4, pic5];
state = {
modalVisible: false,
}
image = null
close(){
this.setState({modalVisible: false});
}
constructor(props){
super(props);
this.close = this.close.bind(this);
}
showImage(path){
this.image = path;
this.setState({modalVisible: true});
}
render() {
return (
<View style={{alignItems:'center', justifyContent: 'center'}}>
<ScrollView>
{this.Images.map((item)=>{
return (
<TouchableOpacity key={item} onPress={(item)=>this.showImage(item)}>
<View style={{borderColor: 'red', borderWidth: 1, marginBottom: 10}}>
<Image style={{width: 200, height: 200}} source={item} />
</View>
</TouchableOpacity>
)
})}
</ScrollView>
<ImageViewer closeModal={()=>this.close()} modalVisible={this.state.modalVisible} image={this.image}/>
</View>
);
}
}
class ImageViewer extends Component {
render() {
console.log(this.props.image) //Checking Value here
return (
<Modal
style={{top: '50%', left: '50%', transform: 'translate(-50%, -50%) !important'}}
animationType='fade'
transparent={true}
onRequestClose={()=>this.props.closeModal()}
visible={this.props.modalVisible}
>
<View style={{flex:1 ,alignItems: 'center', justifyContent: 'center', backgroundColor:'#00000069'}}>
<View style={{padding:20 , backgroundColor:'#fff', borderRadius: 10}}>
<Image style={{width: 400, height: 600}} source={this.props.image} />
</View>
</View>
</Modal>
)
}
}
export default App;
both are in same file..
Normal : https://imgur.com/deai02Y.jpg
Clicked on Image: https://imgur.com/POuZlPU.jpg
On Touchableopacity onPress you are actually passing the onPress $event to showImage function instead of item. so correct way of doing it is
<View style={{alignItems:'center', justifyContent: 'center'}}>
<ScrollView>
{this.Images.map((item)=>{
return (
<TouchableOpacity key={item} onPress={()=>this.showImage(item)}>
<View style={{borderColor: 'red', borderWidth: 1, marginBottom: 10}}>
<Image style={{width: 200, height: 200}} source={item} />
</View>
</TouchableOpacity>
)
})}
</ScrollView>
<ImageViewer closeModal={()=>this.close()} modalVisible={this.state.modalVisible} image={this.image}/>
</View>
after app called write
constructor(props) {
super(props);
this.state = {
image : ''
};
}
and in showImage path
showImage(path){
this.setstate({image : path});
this.setState({modalVisible: true});
}
and in Imageviewer
<ImageViewer closeModal={()=>this.close()} modalVisible={this.state.modalVisible} image={this.state.image}/>
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.