react-native/Examples/UIExplorer/CameraRollExample.ios.js

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/**
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* The examples provided by Facebook are for non-commercial testing and
* evaluation purposes only.
*
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* 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.
*
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* @flow
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*/
'use strict';
var React = require('react-native');
var {
CameraRoll,
Image,
SliderIOS,
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StyleSheet,
SwitchIOS,
Text,
View,
} = React;
var CameraRollView = require('./CameraRollView.ios');
var CAMERA_ROLL_VIEW = 'camera_roll_view';
var CameraRollExample = React.createClass({
getInitialState() {
return {
groupTypes: 'SavedPhotos',
sliderValue: 1,
bigImages: true,
};
},
render() {
return (
<View>
<SwitchIOS
onValueChange={this._onSwitchChange}
value={this.state.bigImages} />
<Text>{(this.state.bigImages ? 'Big' : 'Small') + ' Images'}</Text>
<SliderIOS
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value={this.state.sliderValue}
onValueChange={this._onSliderChange}
/>
<Text>{'Group Type: ' + this.state.groupTypes}</Text>
<CameraRollView
ref={CAMERA_ROLL_VIEW}
batchSize={5}
groupTypes={this.state.groupTypes}
renderImage={this._renderImage}
/>
</View>
);
},
_renderImage(asset) {
var imageSize = this.state.bigImages ? 150 : 75;
var imageStyle = [styles.image, {width: imageSize, height: imageSize}];
var location = asset.node.location.longitude ?
JSON.stringify(asset.node.location) : 'Unknown location';
return (
<View key={asset} style={styles.row}>
<Image
source={asset.node.image}
style={imageStyle}
/>
<View style={styles.info}>
<Text style={styles.url}>{asset.node.image.uri}</Text>
<Text>{location}</Text>
<Text>{asset.node.group_name}</Text>
<Text>{new Date(asset.node.timestamp).toString()}</Text>
</View>
</View>
);
},
_onSliderChange(value) {
var options = CameraRoll.GroupTypesOptions;
var index = Math.floor(value * options.length * 0.99);
var groupTypes = options[index];
if (groupTypes !== this.state.groupTypes) {
this.setState({groupTypes: groupTypes});
}
},
_onSwitchChange(value) {
this.refs[CAMERA_ROLL_VIEW].rendererChanged();
this.setState({ bigImages: value });
}
});
var styles = StyleSheet.create({
row: {
flexDirection: 'row',
flex: 1,
},
url: {
fontSize: 9,
marginBottom: 14,
},
image: {
margin: 4,
},
info: {
flex: 1,
},
});
exports.title = '<CameraRollView>';
exports.description = 'Example component that uses CameraRoll to list user\'s photos';
exports.examples = [
{
title: 'Photos',
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render(): ReactElement { return <CameraRollExample />; }
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}
];