滚动视图中的滚动选项卡(其内容为平面列表并具有标题),如何解决滚动冲突

时间:2019-09-24 06:28:28

标签: react-native scrollview react-native-flatlist

我遇到一个问题,在页面上有一个页眉,一个滚动选项卡,其主要内容是两个FlatList。  我使用动画,让页眉位于单个视图中,并使用绝对布局。此解决方案有问题,FlatList无法滚动,它只能滚动scrollView。当数据增长时,性能会变差。

这是解决方案代码:

         <Animated.View style={{
                width: "100%",
                position: "absolute",
                transform: [{
                    translateY: this.headerY
                }],
                backgroundColor:'red',
                top: 50,
                elevation: 0,
                flex: 1,
                zIndex: this.state.pullToRefresh ? -1 : 1,
            }}>
            <HeaderView />

            </Animated.View>

            <Animated.ScrollView
                scrollEventThrottle={1}
                bounces={false}
                showsVerticalScrollIndicator={false}
                style={{ zIndex: 0, height: DeviceUtils.deviceHeight, elevation: -1, 
                overflow: 'scroll' }}
                contentContainerStyle={{ paddingTop: NAVBAR_HEIGHT }}
                onScroll={
                    Animated.event(
                        [{ nativeEvent: { contentOffset: { y: this.scroll } } }],
                        { useNativeDriver: true },
                    )
                }
                overScrollMode="never"
                 />}
            >
                <Tabs
                    initialPage={0}
                    renderTabBar={(props) =>
                     <Animated.View
                        style={[{
                            transform: [{ translateY: tabY }],
                            zIndex: 1,
                            width: "100%",
                        }]}>
                        <ScrollableTab
                            {...props}
                            style={{ backgroundColor: '#e5e5e5'}}
                            underlineStyle={{
                                backgroundColor: "#2a82e4",
                            }}
                        >
                        </ScrollableTab>
                    </Animated.View>
                    }
                >
                    <Tab heading={"one"}

                        <FlatList key={'one'}/>

                    </Tab>
                     <Tab heading={"two"}
                        <FlatList key={'two'}/>
                    </Tab>
                </Tabs>

UI使用nativebase UI库

1 个答案:

答案 0 :(得分:0)

最后,我将标题放入FlatList ListHeader中。并根据项目索引 呈现选项卡,当索引为0时,呈现选项卡。

 <FlatList
        data={DATA}
        renderItem={this.renderItem}
        keyExtractor={item => item.id}
        ListHeaderComponent={header}
        extraData={selected}
      />
....
renderItem = (item,index) => {
   if(index == 0) {
      return this.renderTabs()
    } else {
        return <Cell data=item/>
      }
}

...

renderTabs = () => {
   <View>
      <Tab/> // the view for tabs, we have to handle the tab change by ourself
      <Tab/>
    </View

}

I use two data array to save for different tabs.