React Yerel ListeSürüm performansı çok mu yavaş?

Question

Benim application.react yerel listeden 113 kayıtlarım var. Tüm satırları görüntülemek için 3 saniyeden fazla sürüyor. Verimi nasıl en aza indiririm, böylece zaman tüketimi minimum düzeyde olabilir ve uygulama deneyimi pürüzsüz olabilir. Aynı uygulamayı ios olarak kontrol ettim ve tepki-yerel uygulama sürümüne kıyasla çok verimli. Her satırda bir avatar resmim ve ismim ve butonum var. İşte

liste görünümü

var Ziglist = React.createClass({ 
getInitialState: function() { 
    return { 
     isLoading: true, 
     resultsData: new ListView.DataSource({ 
     rowHasChanged: (row1, row2) => row1 != row2 }), 
     }; 
}, 

componentWillMount: function(){ 
    PeopleStore.listen(this.onChange); 
    PeopleActions.getPeopleFollowing(); 
}, 

componentWillUnmount() { 
    PeopleStore.unlisten(this.onChange); 
}, 

onChange(state) { 
this.setState({resultsData: this.getDataSource(state.resultsData)}) 
}, 

getDataSource: function(mediaItem: Array<any>): ListView.dataSource { 
    return this.state.resultsData.cloneWithRows(mediaItem) 
}, 
render: function() { 
    return (
    <View style={{flex: 1}} > 
    <ListView 
    dataSource={this.state.resultsData} 
    renderRow={this.renderRow} 
    renderSeperator={this.renderSeperator} 
    contentInset={{top: 0}} 
    automaticallyAdjustContentInsets={false} 
    /> 
    <Button 
    containerStyle={styles.goAhead} 
    style={styles.base} 
    onPress={() => this.onStartPress()}> 
    <Text style={[styles.base,styles.go]}>Ok, Lets GO > </Text> 
    </Button> 
</View> 
); 
}, 
renderSeparator: function (sectionID: number | 
string, rowID: number | string, adjacentRowHighlighted: boolean) { 
return (
    <View key={"SEP_" + sectionID + "_" + rowID} /> 
); 
}, 
renderRow: function (
media: Object, 
sectionID: number | string, 
rowID: number | string, 
highlightRowFunction: (sectionID: ?number | string, 
rowID: ?number | string) => void,) { 
    return (
    <CelebrityRow 
    media={media} 
    onSelect={() => this.selectMediaItem(media)} 
    onHighlight={() => highlightRowFunction(sectionID,rowID)} 
    onDeHighlight={() => highlightRowFunction(null,null)} 
    /> 
); 
}, 
selectMediaItem: function (mediaItem) { 
this.props.navigator.push({ 
    name: 'celebrityDetailView', 
    passProps: { 
    mediaItem: mediaItem 
    } 
}); 
} 

benim kodudur ve burada Ünlü Row kodudur

var CelebrityRow = React.createClass({ 
getInitialState: function() { 
    return { 
     following_ids: FollowingStore.getState().following_ids, 
     unfollowing_ids: FollowingStore.getState().unfollowing_ids, 
     icon: null, 
     follow: true 
    } 
}, 
componentWillMount: function() { 
    if (_.indexOf(this.state.unfollowing_ids, this.props.media.id) > -1) { 
     this.setState({ 
      follow: !this.state.follow 
     }); 
    } 
}, 
componentWillUnmount: function() {}, 
componentDidMount: function() { 
    var _unfollowing_ids = FollowingStore.getState().unfollowing_ids; 

    if (_unfollowing_ids.length > 0 && this.state.follow === false) { 
     var following_arr = PeopleStore.getState().resultsData; 
     var _following_ids = FollowingStore.getState().following_ids; 

     _.each(_unfollowing_ids, function(id) { 
      var find = _.findWhere(following_arr, { 
       id: id 
      }); 
      following_arr = _.without(following_arr, find); 
     }); 

     var following_ids = _.difference(_following_ids, _unfollowing_ids); 

     this.setState({ 
      unfollowing_ids: [], 
      following_ids: following_ids 
     }); 
     var _this = this; 
     setTimeout(function() { 
      FollowingActions.updateFollowingIdsWithStorage(following_ids); 
      FollowingActions.updateUnFollowingIds([]); 
      PeopleActions.updatePeopleFollowingWithStorage(following_arr); 
      _this.setState({ 
       follow: true 
      }) 
     }, 1000); 

    } 

}, 
onChange: function(state) { 
    // this.setState({unfollowing_ids: state.unfollowing_ids}); 
}, 
onAddPress: function(media) { 

    this.setState({ 
     follow: !this.state.follow 
    }); 
    FollowingActions.updateUnFollowingIds(media.id); 
}, 
render: function() { 

    return (< 
     View style = { 
      styles.row 
     } > 
     < 
     TouchableHighlight onPress = { 
      this.props.onSelect 
     } 
     onShowUnderlay = { 
      this.props.onHighlight 
     } 
     onHideUnderlay = { 
      this.props.onDeHighlight 
     } > 
     < 
     View style = { 
      styles.cellContainer 
     } > 
     < 
     Image source = { 
      { 
       uri: this.props.media.avatar_url 
      } 
     } 
     style = { 
      styles.cellImage 
     } 
     /> < 
     Text style = { 
      styles.CelebrityName 
     } 
     numberOfLines = { 
      1 
     } > { 
      this.props.media.name 
     } < /Text> 

     < 
     View style = { 
      styles.celebrityAdd 
     } > 
     < 
     Button onPress = { 
      () => this.onAddPress(this.props.media) 
     } > { 
      (this.state.follow ? 
       (< 
        Image source = { 
         require("../assets/tick-mark.png") 
        } 
        style = { 
         styles.addIcon 
        } 
        /> 
       ) : (< 
        Image source = { 
         require("../assets/img-small-add.png") 
        } 
        style = { 
         styles.removeIcon 
        } 
        /> 
       ) 
      ) 
     } < 
     /Button> < 
     /View> 

     < 
     /View> < 
     /TouchableHighlight> < 
     /View> 

    ); 
} 

});

Answer 1

Tüm 100+ satırı bir defada render etmek yerine, renderingLiveSize özelliğini oluşturma performansını artıracak şekilde ayarlayabilirsiniz.

referans: http://facebook.github.io/react-native/releases/0.30/docs/performance.html#listview-initial-rendering-is-too-slow-or-scroll-performance-is-bad-for-large-lists