96 lines
2.2 KiB
JavaScript
96 lines
2.2 KiB
JavaScript
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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* @flow
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* @providesModule ScrollViewSimpleExample
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*/
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'use strict';
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var React = require('react');
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var ReactNative = require('react-native');
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var {
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ScrollView,
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StyleSheet,
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Text,
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TouchableOpacity
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} = ReactNative;
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var NUM_ITEMS = 20;
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class ScrollViewSimpleExample extends React.Component<{}> {
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static title = '<ScrollView>';
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static description = 'Component that enables scrolling through child components.';
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makeItems = (nItems: number, styles): Array<any> => {
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var items = [];
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for (var i = 0; i < nItems; i++) {
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items[i] = (
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<TouchableOpacity key={i} style={styles}>
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<Text>{'Item ' + i}</Text>
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</TouchableOpacity>
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);
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}
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return items;
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};
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render() {
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// One of the items is a horizontal scroll view
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var items = this.makeItems(NUM_ITEMS, styles.itemWrapper);
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items[4] = (
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<ScrollView key={'scrollView'} horizontal={true}>
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{this.makeItems(NUM_ITEMS, [styles.itemWrapper, styles.horizontalItemWrapper])}
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</ScrollView>
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);
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items.push(
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<ScrollView
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key={'scrollViewSnap'}
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horizontal
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snapToInterval={210.0}
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pagingEnabled
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>
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{this.makeItems(NUM_ITEMS, [
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styles.itemWrapper,
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styles.horizontalItemWrapper,
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styles.horizontalPagingItemWrapper,
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])}
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</ScrollView>
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);
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var verticalScrollView = (
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<ScrollView style={styles.verticalScrollView}>
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{items}
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</ScrollView>
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);
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return verticalScrollView;
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}
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}
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var styles = StyleSheet.create({
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verticalScrollView: {
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margin: 10,
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},
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itemWrapper: {
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backgroundColor: '#dddddd',
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alignItems: 'center',
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borderRadius: 5,
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borderWidth: 5,
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borderColor: '#a52a2a',
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padding: 30,
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margin: 5,
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},
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horizontalItemWrapper: {
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padding: 50
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},
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horizontalPagingItemWrapper: {
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width: 200,
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},
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});
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module.exports = ScrollViewSimpleExample;
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