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ImageLoader.js
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ImageLoader.js
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import React from "react";
import { Animated } from "react-native";
class ImageLoader extends React.Component {
state = {
opacity: new Animated.Value(0),
loadedTimes: 0
};
render() {
return (
<Animated.Image
onLoad={() => {
this.setState({ loadedTimes: this.state.loadedTimes + 1 });
if (this.state.loadedTimes === 0) {
// only do animation once. once url refreshes and image loaded again, it's not needed.
Animated.timing(this.state.opacity, {
toValue: 1,
duration: 100,
useNativeDriver: true
}).start();
}
}}
{...this.props}
style={[
{
opacity: this.state.opacity,
transform: [
{
scale: this.state.opacity.interpolate({
inputRange: [0, 1],
outputRange: [0.85, 1]
})
}
]
},
this.props.style
]}
/>
);
}
}
export default ImageLoader;