layout-animation-test.js

/**
 * The examples provided by Facebook are for non-commercial testing and
 * evaluation purposes only.
 *
 * Facebook reserves all rights not expressly granted.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT. IN NO EVENT SHALL
 * FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * @flow
 */
'use strict';

const React = require('react');
const ReactNative = require('react-native');
const {
  LayoutAnimation,
  StyleSheet,
  Text,
  View,
  TouchableOpacity,
  Switch,
} = ReactNative;

const AddRemoveExample = React.createClass({

  getInitialState() {
    return {
      views: [],
    };
  },

  componentDidMount() {
    LayoutAnimation.Presets.easeInEaseOut.duration = 3000;
  },

  _onPressAddView() {
    LayoutAnimation.easeInEaseOut();
    this.setState({views: [...this.state.views, {}]});
  },

  _onPressRemoveView() {
    LayoutAnimation.easeInEaseOut();
    this.setState({views: this.state.views.slice(0, -1)});
  },

  render() {
    const views = this.state.views.map((view, i) =>
      <TouchableOpacity key={i} onPress={() => console.warn('hi')}>
        <View style={styles.view}>
          <Text>{i}</Text>
          <Switch />
        </View>
      </TouchableOpacity>
    );
    return (
      <View style={styles.container}>
        <TouchableOpacity onPress={this._onPressAddView}>
          <View style={styles.button}>
            <Text>Add view</Text>
          </View>
        </TouchableOpacity>
        <TouchableOpacity onPress={this._onPressRemoveView}>
          <View style={styles.button}>
            <Text>Remove view</Text>
          </View>
        </TouchableOpacity>
        <View style={styles.viewContainer}>
          {views}
        </View>
      </View>
    );
  }
});

var styles = StyleSheet.create({
  container: {
    flex: 1,
  },
  button: {
    borderRadius: 5,
    backgroundColor: '#eeeeee',
    padding: 10,
    marginBottom: 10,
  },
  buttonText: {
    fontSize: 16,
  },
  viewContainer: {
    flex: 1,
    flexDirection: 'row',
    flexWrap: 'wrap',
  },
  view: {
    height: 54,
    width: 54,
    backgroundColor: 'red',
    margin: 8,
    alignItems: 'center',
    justifyContent: 'center',
  },
});

exports.title = 'Layout Animation';
exports.description = 'Layout animation';
exports.examples = [
{
  title: 'Add and remove views',
  render(): ReactElement {
    return <AddRemoveExample />;
  },
}];