我有一个 FlatList。
<View style={styles.container}>
<FlatList data={this.state.restaurants}
renderItem={({ item }) => this.renderItem(item.restaurant)}
keyExtractor={restaurant => restaurant.key}
ListHeaderComponent={() => this.renderHeaderComponent()}
ItemSeparatorComponent={this.renderSeparator}/>
</View>
在头部放置TextInput,我将其用作搜索栏。
renderHeaderComponent() {
return(
<View style={{ flexDirection: 'row', marginTop: 10, borderBottomColor: '#CED0CE', borderWidth: 1, borderColor: 'transparent' }}>
<Icon name='search' size={30} style={{ marginLeft: 10, marginRight: 10 }}/>
<TextInput
style={{height: 40, flex: 1}}
onChangeText={(text) => this.onChangeText(text)}
placeholder='Type text for search'
clearButtonMode='while-editing'
value={this.state.searchText}
/>
</View>
);
};
在onChangeMethod中,我对数据进行过滤。
onChangeText(text) {
const filteredRestaurants = _.filter(this.props.list, (restaurantObject) => {
const restaurant = restaurantObject.restaurant;
const result = restaurant.name.trim().toLowerCase().includes(text.trim().toLowerCase());
return result;
})
this.setState({
searchText: text,
restaurants: filteredRestaurants
});
}
问题如下。当我在TextInput中输入一个符号时,焦点立即从TextInput中丢失?我如何在输入时保持TextInput中的焦点?