161 lines
3.8 KiB
JavaScript
161 lines
3.8 KiB
JavaScript
/**
|
|
* Copyright (c) Facebook, Inc. and its affiliates.
|
|
*
|
|
* This source code is licensed under the MIT license found in the
|
|
* LICENSE file in the root directory of this source tree.
|
|
*
|
|
* @flow
|
|
* @format
|
|
*/
|
|
'use strict';
|
|
|
|
const React = require('react');
|
|
const ReactNative = require('react-native');
|
|
const {
|
|
CameraRoll,
|
|
Image,
|
|
Slider,
|
|
StyleSheet,
|
|
Switch,
|
|
Text,
|
|
View,
|
|
TouchableOpacity,
|
|
} = ReactNative;
|
|
|
|
const invariant = require('fbjs/lib/invariant');
|
|
|
|
const CameraRollView = require('./CameraRollView');
|
|
|
|
const AssetScaledImageExampleView = require('./AssetScaledImageExample');
|
|
|
|
import type {PhotoIdentifier, GroupTypes} from 'CameraRoll';
|
|
|
|
type Props = $ReadOnly<{|
|
|
navigator?: ?Array<
|
|
$ReadOnly<{|
|
|
title: string,
|
|
component: Class<React.Component<any, any>>,
|
|
backButtonTitle: string,
|
|
passProps: $ReadOnly<{|asset: PhotoIdentifier|}>,
|
|
|}>,
|
|
>,
|
|
|}>;
|
|
|
|
type State = {|
|
|
groupTypes: GroupTypes,
|
|
sliderValue: number,
|
|
bigImages: boolean,
|
|
|};
|
|
|
|
class CameraRollExample extends React.Component<Props, State> {
|
|
state = {
|
|
groupTypes: 'SavedPhotos',
|
|
sliderValue: 1,
|
|
bigImages: true,
|
|
};
|
|
_cameraRollView: ?React.ElementRef<typeof CameraRollView>;
|
|
render() {
|
|
return (
|
|
<View>
|
|
<Switch
|
|
onValueChange={this._onSwitchChange}
|
|
value={this.state.bigImages}
|
|
/>
|
|
<Text>{(this.state.bigImages ? 'Big' : 'Small') + ' Images'}</Text>
|
|
<Slider
|
|
value={this.state.sliderValue}
|
|
onValueChange={this._onSliderChange}
|
|
/>
|
|
<Text>{'Group Type: ' + this.state.groupTypes}</Text>
|
|
<CameraRollView
|
|
ref={ref => {
|
|
this._cameraRollView = ref;
|
|
}}
|
|
batchSize={20}
|
|
groupTypes={this.state.groupTypes}
|
|
renderImage={this._renderImage}
|
|
/>
|
|
</View>
|
|
);
|
|
}
|
|
|
|
loadAsset(asset) {
|
|
if (this.props.navigator) {
|
|
this.props.navigator.push({
|
|
title: 'Camera Roll Image',
|
|
component: AssetScaledImageExampleView,
|
|
backButtonTitle: 'Back',
|
|
passProps: {asset: asset},
|
|
});
|
|
}
|
|
}
|
|
|
|
_renderImage = (asset: PhotoIdentifier) => {
|
|
const imageSize = this.state.bigImages ? 150 : 75;
|
|
const imageStyle = [styles.image, {width: imageSize, height: imageSize}];
|
|
const {location} = asset.node;
|
|
const locationStr = location
|
|
? JSON.stringify(location)
|
|
: 'Unknown location';
|
|
return (
|
|
<TouchableOpacity
|
|
key={asset.node.image.uri}
|
|
onPress={this.loadAsset.bind(this, asset)}>
|
|
<View style={styles.row}>
|
|
<Image source={asset.node.image} style={imageStyle} />
|
|
<View style={styles.info}>
|
|
<Text style={styles.url}>{asset.node.image.uri}</Text>
|
|
<Text>{locationStr}</Text>
|
|
<Text>{asset.node.group_name}</Text>
|
|
<Text>{new Date(asset.node.timestamp).toString()}</Text>
|
|
</View>
|
|
</View>
|
|
</TouchableOpacity>
|
|
);
|
|
};
|
|
|
|
_onSliderChange = value => {
|
|
const options = Object.keys(CameraRoll.GroupTypesOptions);
|
|
const index = Math.floor(value * options.length * 0.99);
|
|
const groupTypes = options[index];
|
|
if (groupTypes !== this.state.groupTypes) {
|
|
this.setState({groupTypes: groupTypes});
|
|
}
|
|
};
|
|
|
|
_onSwitchChange = value => {
|
|
invariant(this._cameraRollView, 'ref should be set');
|
|
this._cameraRollView.rendererChanged();
|
|
this.setState({bigImages: value});
|
|
};
|
|
}
|
|
|
|
const styles = StyleSheet.create({
|
|
row: {
|
|
flexDirection: 'row',
|
|
flex: 1,
|
|
},
|
|
url: {
|
|
fontSize: 9,
|
|
marginBottom: 14,
|
|
},
|
|
image: {
|
|
margin: 4,
|
|
},
|
|
info: {
|
|
flex: 1,
|
|
},
|
|
});
|
|
|
|
exports.title = 'Camera Roll';
|
|
exports.description =
|
|
"Example component that uses CameraRoll to list user's photos";
|
|
exports.examples = [
|
|
{
|
|
title: 'Photos',
|
|
render(): React.Node {
|
|
return <CameraRollExample />;
|
|
},
|
|
},
|
|
];
|