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@codingwaysarg
Created June 18, 2018 15:16
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FastImage placeholder wrapper
import React, { Component } from 'react'
import { ActivityIndicator, View, StyleSheet } from 'react-native'
import { Images, Metrics } from '../Themes'
import FastImage from 'react-native-fast-image'
export default class PlaceHolderFastImage extends Component {
constructor(props){
super(props)
this.state = {
loaded: false,
style: StyleSheet.flatten(props.style)
}
}
onLoadEnd(){
this.setState({loaded: true})
}
render() {
const top = (this.state.style.height / 2) - 15
const left = this.state.style.width == 'auto' ? (Metrics.screenWidth / 2 - 30) : (this.state.style.width / 2 - 15)
return <View style={this.props.style}>
{
!this.state.loaded &&
<View>
<FastImage
source={Images.placeholder}
style={this.props.style}
/>
<View style={{
position:'absolute',
top: top,
left: left}}>
<ActivityIndicator size="large" color="#ccc" />
</View>
</View>
}
<FastImage
source={this.props.source}
style={[this.props.style, this.state.loaded ? {} : {width: 0, height: 0}]}
onLoadEnd={this.onLoadEnd.bind(this)}
/>
</View>
}
}
@hupptechnologies
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This is the best example of having placeholder but I had to change onLoadEnd to onLoad as onLoadEnd will called when the image finishes loading, whether it was successful or an error.

import React, { useState } from "react";
import { View } from "react-native";
import FastImage from "react-native-fast-image";
import { AppTheme } from "src/utils/appTheme";
import Images from "src/assets/images";

export default function Image(props) {
	const { style, source, tintColor, placeholder } = props;
	const [loaded, setLoaded] = useState(false);

	const onLoad = () => {
		setLoaded(true);
	}

	return (
		<View>
			{
				(!loaded) && (
					<View>
						<FastImage 
							source={placeholder || Images.common.placeholder}
							style={style}
						/>
					</View>
				)
			}
			<FastImage
				style={[style, loaded ? {} : {width: 0, height: 0}]}
				source={source}
				tintColor={tintColor}
				onLoad={onLoad}
			/>
		</View>
	);
}

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