TabView.js
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import * as React from 'react';
import { View, StyleSheet, Platform } from 'react-native';
import { TabViewAnimated, TabViewPagerPan } from 'react-native-tab-view';
import SceneView from '../SceneView';
import withCachedChildNavigation from '../../withCachedChildNavigation';
import SafeAreaView from '../SafeAreaView';
class TabView extends React.PureComponent {
static defaultProps = {
// fix for https://github.com/react-native-community/react-native-tab-view/issues/312
initialLayout: Platform.select({
android: { width: 1, height: 0 }
})
};
_handlePageChanged = index => {
const { navigation } = this.props;
navigation.navigate(navigation.state.routes[index].routeName);
};
_renderScene = ({ route }) => {
const { screenProps } = this.props;
const childNavigation = this.props.childNavigationProps[route.key];
const TabComponent = this.props.router.getComponentForRouteName(route.routeName);
return <View style={styles.page}>
<SceneView screenProps={screenProps} component={TabComponent} navigation={childNavigation} />
</View>;
};
_getLabel = ({ route, tintColor, focused }) => {
const options = this.props.router.getScreenOptions(this.props.childNavigationProps[route.key], this.props.screenProps || {});
if (options.tabBarLabel) {
return typeof options.tabBarLabel === 'function' ? options.tabBarLabel({ tintColor, focused }) : options.tabBarLabel;
}
if (typeof options.title === 'string') {
return options.title;
}
return route.routeName;
};
_getOnPress = (previousScene, { route }) => {
const options = this.props.router.getScreenOptions(this.props.childNavigationProps[route.key], this.props.screenProps || {});
return options.tabBarOnPress;
};
_getTestIDProps = ({ route }) => {
const options = this.props.router.getScreenOptions(this.props.childNavigationProps[route.key], this.props.screenProps || {});
return options.tabBarTestIDProps;
};
_renderIcon = ({ focused, route, tintColor }) => {
const options = this.props.router.getScreenOptions(this.props.childNavigationProps[route.key], this.props.screenProps || {});
if (options.tabBarIcon) {
return typeof options.tabBarIcon === 'function' ? options.tabBarIcon({ tintColor, focused }) : options.tabBarIcon;
}
return null;
};
_renderTabBar = props => {
const {
tabBarOptions,
tabBarComponent: TabBarComponent,
animationEnabled
} = this.props;
if (typeof TabBarComponent === 'undefined') {
return null;
}
return <TabBarComponent {...props} {...tabBarOptions} screenProps={this.props.screenProps} navigation={this.props.navigation} getLabel={this._getLabel} getTestIDProps={this._getTestIDProps} getOnPress={this._getOnPress} renderIcon={this._renderIcon} animationEnabled={animationEnabled} />;
};
_renderPager = props => <TabViewPagerPan {...props} />;
render() {
const {
router,
tabBarComponent,
tabBarPosition,
animationEnabled,
configureTransition,
lazy,
initialLayout,
screenProps
} = this.props;
let renderHeader;
let renderFooter;
let renderPager;
const { state } = this.props.navigation;
const options = router.getScreenOptions(this.props.childNavigationProps[state.routes[state.index].key], screenProps || {});
const tabBarVisible = options.tabBarVisible == null ? true : options.tabBarVisible;
const swipeEnabled = options.swipeEnabled == null ? this.props.swipeEnabled : options.swipeEnabled;
if (tabBarComponent !== undefined && tabBarVisible) {
if (tabBarPosition === 'bottom') {
renderFooter = this._renderTabBar;
} else {
renderHeader = this._renderTabBar;
}
}
if (animationEnabled === false && swipeEnabled === false || typeof configureTransition === 'function') {
renderPager = this._renderPager;
}
const props = {
lazy,
initialLayout,
animationEnabled,
configureTransition,
swipeEnabled,
renderPager,
renderHeader,
renderFooter,
renderScene: this._renderScene,
onIndexChange: this._handlePageChanged,
navigationState: this.props.navigation.state,
screenProps: this.props.screenProps,
style: styles.container
};
// $FlowFixMe: mismatch with react-native-tab-view type
return <TabViewAnimated {...props} />;
}
}
export default withCachedChildNavigation(TabView);
const styles = StyleSheet.create({
container: {
flex: 1
},
page: {
flex: 1,
overflow: 'hidden'
}
});