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Add Platform Color example #53908

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52 changes: 52 additions & 0 deletions packages/rn-tester/js/examples/PlatformColor/PlatformColorExample.js
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Original file line numberDiff line numberDiff line change
Expand Up@@ -14,11 +14,14 @@ import type {ColorValue} from 'react-native';
import RNTesterText from '../../components/RNTesterText';
import React from 'react';
import {
Appearance,
Button,
DynamicColorIOS,
Platform,
PlatformColor,
StyleSheet,
View,
useColorScheme,
} from 'react-native';

function PlatformColorsExample() {
Expand DownExpand Up@@ -315,6 +318,48 @@ function VariantColorsExample() {
);
}

function ReactsToAppearanceChangesExample() {
const theme = useColorScheme();
const key = Platform.select({
android: theme ?? '',
default: undefined,
});

return (
// using a key here forces the component to unmount and remount
// which is necessary to trigger the appearance change
<View style={styles.column} key={key}>
<View style={styles.row}>
<RNTesterText style={styles.labelCell}>
{Platform.select({
ios: "DynamicColorIOS({light: 'red', dark: 'blue'})",
android: "PlatformColor('?attr/colorAccent')",
default: 'Unexpected Platform.OS: ' + Platform.OS,
})}
</RNTesterText>
<View
style={{
...styles.colorCell,
backgroundColor:
Platform.OS === 'ios'
? DynamicColorIOS({light: 'red', dark: 'blue'})
: Platform.OS === 'android'
? PlatformColor('?attr/colorAccent')
: 'red',
}}
/>
</View>
<View style={styles.separator} />
<Button
title="Change Appearance"
onPress={() => {
Appearance.setColorScheme(theme === 'dark' ? 'light' : 'dark');
}}
/>
</View>
);
}

const styles = StyleSheet.create({
column: {flex: 1, flexDirection: 'column'},
row: {flex: 0.75, flexDirection: 'row'},
Expand All@@ -326,6 +371,7 @@ const styles = StyleSheet.create({
}),
},
colorCell: {flex: 0.25, alignItems: 'stretch'},
separator: {height: 8},
});

exports.title = 'PlatformColor';
Expand DownExpand Up@@ -358,4 +404,10 @@ exports.examples = [
return <VariantColorsExample />;
},
},
{
title: 'Reacts to Appearance Changes',
render(): React.MixedElement {
return <ReactsToAppearanceChangesExample />;
},
},
] as Array<RNTesterModuleExample>;