react-native-flatlist

How to show the index and end of the Flatlist by 15 items on every click

由 会有一股神秘感。 提交于 2019-12-08 13:54:14
问题 I need to show the index and bottom of the list while click on the up and down button. Is any option to show only 15 items up or down If I click on the up or down arrow. For Eg) Consider a list has 500 items. It has an up and down arrow. If I click on the down arrow once I need to show only 15 items for the first time and If click on the down arrow next need to show the next 15 items. Also If I click on the up arrow it needs to show 15 items above not all In this usecase I need to move up and

react native Flatlist navigation

由 空扰寡人 提交于 2019-12-08 04:50:03
问题 I m getting error TypeError: Cannot read property 'navigation' of undefined. I don't understand how to pass navigation component into each child so when a user presses an item it can navigate to employeeEdit component using React Navigation. i am newbie sorry if this is obvious. import React, { Component } from 'react'; import { FlatList } from 'react-native'; import { connect } from 'react-redux'; //import { R } from 'ramda'; import _ from 'lodash'; import { employeesFetch } from '../actions

React Native FlatList load more when we get to the bottom of the list

由 痞子三分冷 提交于 2019-12-07 13:20:32
问题 How to make load more with FlatList of React Native (Not infinite) I've done this, but unfortunately it loads as infinitely. This is my code snippet <FlatList data={this.props.data} renderItem={({ item, separators }) => ( <TouchableHighlight onPress={() => this._onPress(item)} onShowUnderlay={separators.highlight} onHideUnderlay={separators.unhighlight} > <Text> {item.title} </Text> </TouchableHighlight> )} keyExtractor={item => item.id} ListFooterComponent={this.renderFooter} onEndReached=

React Native nested ListView triggers onEndReached multiple times on loading

由 若如初见. 提交于 2019-12-07 10:27:33
问题 Here's the code: <ScrollView> { tree.myPoiComments.CommentInfo && tree.myPoiComments.CommentInfo.length>0 && <FlatList data={tree.myPoiComments.CommentInfo} keyExtractor = {(item, index) => item.CommentId} ListHeaderComponent = {() => <View> <Text style={styles.listHeader}>My Comments</Text> </View>} renderItem= {({item}) => <CommentItem comment={item} owner={1} />} /> } { tree.poiComments.CommentInfo && tree.poiComments.CommentInfo.length>0 && <FlatList data={tree.poiComments.CommentInfo}

React Native: Can't fix FlatList keys warning

由 生来就可爱ヽ(ⅴ＜●) 提交于 2019-12-07 06:43:15
问题 I'm trying to render a FlatList from json fetched from an api, but I keep getting this error: Warning: Each child in an array or iterator should have a unique "key" prop. Check the render method of `VirtualizedList`. Relevant code: <FlatList data={this.props.tunes} keyExtractor={(item, index) => item.id} renderItem={({item}) => { <Item key={item.id} title={item.title} composer={item.composer} year={item.year} /> }} /> I'm sure there is a simple fix for this, but after a few days of trying

How do I alternate colors in Flat List (React Native)

由 烂漫一生 提交于 2019-12-07 05:42:30
问题 Trying to alternate colors in React Natives Flatlist . I believe I need rowID or something similar to do it. This is what I've got so far: let colors = ['#123456', '#654321', '#fdecba', '#abcdef']; <View > <FlatList style={{backgroundColor: colors[this.index % colors.length]}} data={this.state.dataSource} renderItem={({item}) => <Text style={styles.listStyle}>{item.title}, {item.releaseYear}</Text>} keyExtractor={(item, index) => index} /> </View> Any ideas? 回答1: The renderItem callback

react native Flatlist navigation

由 徘徊边缘 提交于 2019-12-06 20:24:31
I m getting error TypeError: Cannot read property 'navigation' of undefined. I don't understand how to pass navigation component into each child so when a user presses an item it can navigate to employeeEdit component using React Navigation. i am newbie sorry if this is obvious. import React, { Component } from 'react'; import { FlatList } from 'react-native'; import { connect } from 'react-redux'; //import { R } from 'ramda'; import _ from 'lodash'; import { employeesFetch } from '../actions'; import { HeaderButton } from './common'; import ListEmployee from './ListEmployee'; class

Nested Flat List Invariant Violation: A VirtualizedList contains a cell which itself contains more than one VirtualizedList

由 半腔热情 提交于 2019-12-06 12:42:48
Error: Invariant Violation: A VirtualizedList contains a cell which itself contains more than one VirtualizedList of the same orientation as the parent list. You must pass a unique listKey prop to each sibling list. So I am trying to make A FlatList which will have Multiple Nested FlatLists Like this.. 1------FlaList Level 0 1.1-----FlatList Level 1 1.2-----FlatList Level 1 1.2.1------ FlatList Level 2 1.2.2------ FlatList Level 2 2------FlatList Level 0 2.1-----FlatList Level 1 2.2-----FlatList Level 1 2.2.1------ FlatList Level 2 2.2.2------ FlatList Level 2 The Code Snippet For this: {/*

React Native FlatList onPress for child

由 狂风中的少年 提交于 2019-12-06 09:22:15
问题 I'm trying to wire up a press handler for an image that's nested within a React Native FlatList. I've verified that the function is being passed in via props, by calling the function directly inside my component and that worked fine. Below is a reduced test case. I've also tried setting the onPress on the Image, with identical results. const PostList = ({posts, onActLike, currentUser}) => { return ( <FlatList data={ posts } keyExtractor={ (item) => item.id } renderItem={ ({item}) => { return

Render FlatList footer at the bottom of the list even if content is not enough

由 江枫思渺然 提交于 2019-12-06 05:48:52
I want to render FlatList 's footer at the bottom of the page even if there is not enough content to fill the whole screen. In order to do this, you need to take a look at react-native sources. Here there is a code which shows adding footer internally. As you can see it wraps into additional View which can be styled using ListFooterComponentStyle prop. It's not described for some reason in docs. So here is the solution: <FlatList data={someData} keyExtractor={item => item.id} contentContainerStyle={{flexGrow: 1}} ListFooterComponentStyle={{flex:1, justifyContent: 'flex-end'}}
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