Ich mag ein Bild nehmen mit reagieren-native Bild Picker, ich npm run android
Befehl verwenden, sondern als die Anwendung in expo läuft zeigt es diesen Fehler:reagieren nativen Bild Picker showimagepicker
undefined is not an object(evaluating 'imagepickerManager.showimagepicker')
Wie verwende ich Expo-Projekt index.android.js
ist nicht im Projekt vorhanden, so react-native run-android
Befehl funktioniert nicht.
Kann mir bitte jemand sagen, wie ich diesen Fehler beheben kann?
import React, {Component} from 'react';
import {Text, View, TouchableOpacity, Image} from 'react-native';
// var ImagePicker = require('react-native-image-picker');
import * as ImagePicker from 'react-native-image-picker';
// More info on all the options is below in the README...just some common use cases shown here
var options = {
title: 'Select Avatar',
customButtons: [
{name: 'fb', title: 'Choose Photo from Facebook :'},
],
storageOptions: {
skipBackup: true,
path: 'images'
}
};
export default class App extends Component{
constructor(props){
super(props);
this.state={
avatarSource:null
}
}
render(){
let img=this.state.avatarSource == null?null:
<Image
source={this.state.avatarSource}
style={{height:200, width:300}}
/>
return(
<View>
<Text>Welcome to Image Picker</Text>
<TouchableOpacity onPress = {this.show.bind()} >
<Text>Load Images</Text>
</TouchableOpacity>
{img}
</View>
)
}
show(){
ImagePicker.showImagePicker(options, (response) => {
if (response.didCancel) {
console.log('User cancelled image picker');
}
else if (response.error) {
console.log('ImagePicker Error: ', response.error);
}
else if (response.customButton) {
console.log('User tapped custom button please: ', response.customButton);
}
else {
let source = { uri: response.uri };
// You can also display the image using data:
// let source = { uri: 'data:image/jpeg;base64,' + response.data };
this.setState({
avatarSource: source
});
}
});
}
}
verbesserte Formatierung und Grammatik – lukkea