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App.js
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App.js
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import React, {Component} from 'react';
import {
StyleSheet,
Text,
View,
ScrollView,
Button,
NativeModules
} from 'react-native';
const {CustomVisibilityInspector} = NativeModules;
const ITEMS_COUNT = 100;
const INITIAL_TEXT = 'The list of natively visible items will appear here once you tap on the button. According to the bug, the items hidden by this panel (drawn below it, z-axis-wise) will show as well (though they should not).';
type Props = {};
export default class App extends Component<Props> {
constructor(props) {
super(props);
this.state = {
visibilityDesc: ''
};
this.onDescribeVisibility = this.onDescribeVisibility.bind(this);
}
async onDescribeVisibility() {
this.setState({
visibilityDesc: await CustomVisibilityInspector.inspect()
});
}
render() {
return (
<View style={styles.container}>
<View style={{backgroundColor: 'lightgray', height: "75%"}} nativeID="visibilityInspect">
<ScrollView>
<Text style={styles.itemText}>This list is scrollable</Text>
{
Array.from(
{length: ITEMS_COUNT},
(value, index) => <Text key={`item-${index}`} style={styles.itemText}>[Item #{index}]</Text>
)
}
</ScrollView>
</View>
<View style={{backgroundColor: 'lightskyblue', flex: 1, paddingHorizontal: 8}}>
<View style={{marginBottom: 10, marginHorizontal: -8}}>
<Button title="Tap on me" onPress={this.onDescribeVisibility}/>
</View>
{!this.state.visibilityDesc ? <Text style={styles.freeText}>{INITIAL_TEXT}</Text> : undefined}
{this.state.visibilityDesc ? <Text style={{...styles.freeText, marginBottom: 5}}>Android says these items are visible:</Text> : undefined}
<Text style={styles.freeText}>{this.state.visibilityDesc}</Text>
</View>
</View>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
backgroundColor: 'white',
},
itemText: {
color: 'black',
textAlign: 'center',
fontSize: 20,
padding: 5
},
freeText: {
textAlign: 'center',
}
});