有什么方法可以实现这一目标?我正在使用react-navigation 5,并根据创建了一个自定义底部标签栏Bottom-tab-navigator
我在底部栏中使用的代码如下
import React from 'react';
import { View, StyleSheet } from 'react-native';
import colors from 'styles/colors';
import TabBarItem from './TabBarItem/TabBarItem';
const homeIcon = require('assets/maps.png');
export enum Item {
Home,
ProfileView,
}
const DashboardTabBar: React.FC<{}> = ({ state, descriptors, navigation }) => {
return (
<View style={styles.container}>
<View style={styles.innerContainer}>
{state.routes.map((route, index) => {
const { options } = descriptors[route.key];
const isFocused = state.index === index;
const onPress = () => {
const event = navigation.emit({
type: 'tabPress',
target: route.key,
});
if (!isFocused && !event.defaultPrevented) {
navigation.navigate(route.name);
}
};
const onLongPress = () => {
navigation.emit({
type: 'tabLongPress',
target: route.key,
});
};
return (
<TabBarItem
icon={homeIcon}
isFocused={isFocused}
onPress={onPress}
onLongPress={onLongPress}
options={options}
key={route.key}
/>
);
})}
</View>
</View>
);
};
const styles = StyleSheet.create({
container: {
padding: 10,
paddingBottom: 18,
backgroundColor: 'red', // I tried with 'transparent' here, but i see a white background instead of transparent
},
innerContainer: {
height: 60,
backgroundColor: colors.GREY_L_10,
flexDirection: 'row',
justifyContent: 'space-evenly',
alignItems: 'center',
borderRadius: 50,
borderWidth: 1,
borderColor: colors.GREY,
},
});
export default DashboardTabBar;
据我看,我找不到任何使它透明的方法。
const styles = StyleSheet.create({
container: {
padding: 10,
paddingBottom: 18,
backgroundColor: 'transparent',
},
innerContainer: {
height: 60,
backgroundColor: colors.GREY_L_10,
flexDirection: 'row',
justifyContent: 'space-evenly',
alignItems: 'center',
borderRadius: 50,
borderWidth: 1,
borderColor: colors.GREY,
},
});
默认情况下,从createBottomTabNavigator
返回的导航器不与TabBar重叠屏幕。话虽这么说,即使您的TabBar是透明的,屏幕也会在TabBar的开始处结束。屏幕不在TabBar后面
幸运的是,您只需将position: 'absolute', bottom: 0, left: 0, right: 0
添加到TabBar container
样式(将backgroundColor: 'transparent'
应用到该样式)
很难说,因为您没有提供实际使用DashboardTabBar组件创建导航器的代码,即
<Tab.Navigator tabBar={props => <MyTabBar {...props} />}>
{...}
</Tab.Navigator>
但是,您应该将带有样式对象的tabBarOptions属性添加到Tab.Navigator组件,如下所示:
<Tab.Navigator
tabBar={...}
tabBarOptions={{
style: {
backgroundColor: 'transparent',
borderTopWidth: 0,
position: 'absolute',
marginHorizontal: 0,
paddingHorizontal: 0,
left: 0,
right: 0,
bottom: 0,
height: 100,
},
}}>
{ /* ...your screens go here */ }
</Tab.Navigator>