Snapchat的用户界面当前使用浮动的SearchBar标头设置,该标头似乎在多个屏幕/选项卡之间共享。我想使用react-navigation复制共享的SearchBar标头。我目前有一半有效的解决方案...
当前,即使我在StackNavigator上设置了headerTitle,在导航到搜索结果屏幕时,标题似乎仍在渲染一个全新的SearchBar(您可以看到轻微的闪烁指示其渲染)。
这是我当前为TabNavigator中的一个堆栈设置。
function NetworkStack({ route, navigation }) {
return (
<Network.Navigator
initialRouteName="NetworkEventList"
screenOptions={({ navigation, route }) => ({
headerTitle: () => <Search navigation={navigation} route={route} stackName={"NetworkStack"}/>,
})}>
<Network.Screen
name="NetworkSearchResults"
component={SearchResults}
options={({ navigation, route }) => ({
//headerTitle: () => <Search navigation={navigation} route={route} focused={true} stackName={"NetworkStack"}/>,
headerBackImage: () => <BackButton navigation={navigation} shouldPop={true}/>,
headerBackTitleVisible: false,
gestureEnabled: true
})}/>
<Network.Screen
name="NetworkEventList"
component={NetworkEventList}
options={({ navigation, route }) => ({
headerLeft: () => <ProfileSidebarButton navigation={navigation}/>,
//headerTitle: () => <Search navigation={navigation} focused={false} stackName={"NetworkStack"}/>,
headerRight: () => <CommunityButton navigation={navigation} stackName={"NetworkStack"}/>
})}/>
</Network.Navigator>
)
}
下面是我的TabNavigator。
function TabNavigator({ navigation, route }) {
return (
<Tab.Navigator
initialRouteName="NetworkStack"
tabBar={props => <TabBar {...props}/>}>
<Tab.Screen
name="CheckInStack"
component={CheckInStack}/>
<Tab.Screen
name="NetworkStack"
component={NetworkStack}/>
<Tab.Screen
name="MapStack"
component={MapStack}/>
</Tab.Navigator>
);
}
导航到搜索结果组件的逻辑在输入的onFocus侦听器内部。这是该代码...
const searchBarFocus = () => {
switch(props.stackName) {
case "MapStack":
var searchType = props.searchGoogle ? "AddEstablishment" : "ViewingEstablishments";
props.navigation.navigate('MapSearchResults', {searchType: searchType});
break;
case "NetworkStack":
props.addingMarkers(false);
var searchType = props.searchForPosting ? "ViewingEstablishments" : "ViewingUsers";
let index = null;
let routeState = props.route.state;
if(routeState) index = routeState.index;
if(index !== 1) {
console.log(props.navigation);
props.navigation.navigate('NetworkSearchResults', {searchType: searchType});
}
break;
case "CheckInStack":
props.addingMarkers(false);
props.navigation.navigate('CheckInSearchResults', {searchType: "ViewingUsers"});
break;
}
}
我该如何配置导航元素,以使我拥有一个可以装载一次的SearchBar元素?您可以在我上传的gif文件中看到,搜索栏也失去了对导航的关注,这也归因于我的Search组件的第二次渲染/安装。我们欢迎所有的建议!
答案 0 :(得分:0)
我能够找到问题的解决方案。随时发表评论或提供更好的答案。我使用react-native-elements Search Bar在导航堆栈的标题处创建搜索/输入元素。最初,这是一个包装SearchBar组件的View。我将其更改为TouchableOpacity,以便可以监听onPress事件。这是我构造的新元素。我保留了问题中提供的原始导航配置。
return (
<TouchableOpacity style={[styles.mainContainer, {width: SEARCH_BAR_WIDTH_UNFOCUSED}]} onPress={() => searchBarPress()}>
<SearchBar
id={"searchBar-"+ props.stackName}
platform="ios"
ref={search => searchRef = search}
value={searchInput}
containerStyle={styles.searchInputContainerWrapper}
inputContainerStyle={styles.searchInputContainer}
inputStyle={{color: styles.inputContainer.color}}
round={true}
autoFocus={props.route.params ? true : false}
pointerEvents={props.route.params ? "auto" : "none"}
cancelButtonTitle="Cancel"
cancelButtonProps={{color: '#707070'}}
onChangeText={updateSearch}
//onFocus={searchBarFocus}
onCancel={() => console.log("Cancel")}
/>
</TouchableOpacity>
)
创建Snapchat之类的关键部分(例如搜索栏标题)是autoFocus和pointerEvents属性。属性值必须取决于用户当前所在的屏幕。