Unable to change width when the screen oriantation change

[AlenToma]

Hi I am having trouble to change item width when the screen change.

I can see that width change but somehow it is not applied to the item or maybe the item gets cached somehow.

This is the custom component I created

import {
  RecyclerListView,
  LayoutProvider,
  DataProvider,
} from 'recyclerlistview/dist/reactnative';

import {
  Dimensions,
  StyleSheet,
  ViewStyle,
  StyleProp,
  RefreshControl
} from 'react-native';
import React, { useState, useEffect, useRef, useContext } from 'react';
import { Text, View, TouchableOpacity } from '.'
import { ThemeContext } from './theme/ThemeProvider';
import AppContext from '../context/AppContext';

export type RenderItem = (type: any, item: any, index: any, productWidth: number) => JSX.Element;
export type ItemPress = (item: any, index: number) => void;

export interface IttemListProps {
  scrollToOffset: (x: number, y: number, animate?: boolean) => void;
  forceRerender(): void;
  scrollToItem(data: any, animate?: boolean): void;
  scrollToIndex: (index: number, animate?: boolean) => void;
  scrollToEnd: (animate?: boolean) => void;
  forceRerender: () => void;
}

export type Seperator = { x_name: "Seperator", content: string }

const ItemList = ({
  items,
  renderItem,
  onItemPress,
  onItemLongPress,
  onRefresh,
  seperator,
  onEndReached,
  itemHeight,
  columnPerRaw,
  onIni,
  selectedItem,
  onScroll,
  style,
  isHorizontal,
  contentContainerStyle,
  activeOpacity,
  initialoffsetY,
  nestedScrollEnabled,
  ignoreMargin,
  updators
}: {
  items: any[];
  renderItem: RenderItem;
  onItemPress?: ItemPress;
  onItemLongPress?: ItemPress;
  onRefresh?: () => Promise<void>;
  seperator?: Boolean;
  onEndReached?: Function;
  itemHeight?: number;
  columnPerRaw?: number;
  onIni?: (componenet: IttemListProps) => void;
  selectedItem?: any;
  onScroll?: (nativeEvent: any, offsetX: number, offsetY: number) => any;
  style?: StyleProp<ViewStyle>,
  contentContainerStyle?: StyleProp<ViewStyle>,
  isHorizontal?: boolean,
  activeOpacity?: number;
  initialoffsetY?: number;
  nestedScrollEnabled?: boolean;
  ignoreMargin?: boolean,
  updators?: any[]
}) => {
  const columnPer = () => {
    return (columnPerRaw ?? 1);
  }

  const globalContext = useContext(AppContext);
  const recyclerListViewRef = useRef<IttemListProps>();
  const [loading, setLoading] = useState(false)
  const [containerWidth, setContainerWidth] = useState(0)
  const [loadingSize, setloadingSize] = useState(0)
  const themeContext = useContext(ThemeContext)

  const [dataSource, setDataSource] = useState(
    new DataProvider((r1, r2) => {
      return r1 !== r2;
    }).cloneWithRows(items),
  );
  const ItemWidth = () => {
    return containerWidth || globalContext.windowDimension.width;
  }

  const calProductWidth = () => {
    return (ItemWidth() / columnPer());
  }

  const [initialOffset, setInitialOffset] = useState(initialoffsetY ?? 0);
  const [productWidth, setProductWidth] = useState(calProductWidth())
  const init = useRef(false);
  const userDrag = useRef(false);
  const endReashedTimer = useRef(undefined as any)
  const updateTimer = useRef(undefined as any)
  const layoutProvider = useRef(new LayoutProvider(
    (index) => {
      return 0;
    },
    (type, dim) => {
      dim.width = (ItemWidth() / columnPer());
      dim.height = itemHeight ?? 30;
    },
  ));

  // layoutProvider.current.shouldRefreshWithAnchoring = false;

  // when items update create new provider
  useEffect(() => {
    clearTimeout(endReashedTimer.current)
    if (items && items.length > 0 && init.current) {
      setDataSource(
        new DataProvider((r1, r2) => {
          return r1 !== r2;
        }).cloneWithRows(items),
      );
    }
  }, [items, updators]);

  useEffect(() => {
    init.current = true;
    return () => {
      clearTimeout(endReashedTimer.current)
      clearTimeout(updateTimer.current)
      init.current = false;
    }
  }, [])

  useEffect(() => {
    if (itemHeight && selectedItem) {
      setInitialOffset(items.findIndex((x) => x == selectedItem) * itemHeight);
      recyclerListViewRef.current?.forceRerender();
    }
  }, [selectedItem,]);

  const update =()=> {
    clearTimeout( updateTimer.current)
    updateTimer.current = setTimeout(() => {
      if (recyclerListViewRef.current) {
        recyclerListViewRef.current.forceRerender()
      }
    }, 10);

  }

  if (updators)
    useEffect(() => {
      update();
    }, updators)

  useEffect(() => {
    update();
  }, [productWidth])

  useEffect(() => {
    setProductWidth(calProductWidth());
  }, [columnPerRaw, containerWidth])

  const handleListEnd = () => {
    if (onEndReached) onEndReached();
  };
  const itemGetter = (type: any, item: any, index: any, extendedState: any) => {
    const width = columnPerRaw && columnPerRaw > 1 ? productWidth - 5 : containerWidth;
    return (
      <View key={index} style={[styles.container, { width: width, borderBottomColor: "#242529", borderBottomWidth: seperator === true ? 1 : 0 }]}>
        <TouchableOpacity
          incBackGround={false}  activeOpacity={activeOpacity ?? 0.5} onLongPress={() => onItemLongPress ? onItemLongPress(item, index) : null} onPress={onItemPress ? () => onItemPress(item, index) : undefined}>
          {renderItem(type, item, index, width)}
        </TouchableOpacity>
      </View>
    );
  };

  const scrollProps = {
    nestedScrollEnabled: nestedScrollEnabled,
    onScrollBeginDrag: () => {
      userDrag.current = true
    }
  } as any;

  if (onRefresh)
    scrollProps.refreshControl = (
      <RefreshControl
        refreshing={loading}
        onRefresh={async () => {
          setLoading(true);
          await onRefresh();
          setLoading(false);
        }}
      />
    )

  const getViewWidth = () => {
    if (columnPer() <= 1)
      return ItemWidth()
    return ((productWidth) * Math.floor(columnPer()));
  }
  return (
    <View style={[styles.listContainer, style, { alignItems: "center", width: "100%" }]} onLayout={(e) => {
      setContainerWidth(e.nativeEvent.layout.width);
    }}>
      {
        containerWidth > 0 && productWidth > 0 ? (
          <RecyclerListView
            suppressBoundedSizeException={true}
            disableRecycling={false}
            contentContainerStyle={[contentContainerStyle, styles.containers, { width: getViewWidth() }]}
            ref={(c: any) => {
              recyclerListViewRef.current = c;
              if (onIni) onIni(c);
            }}
            scrollViewProps={scrollProps}
            isHorizontal={isHorizontal}
            onScroll={(event: any, x: any, y: any) => {
              if (!initialOffset)
                setInitialOffset(y + (itemHeight ?? 100));
              if (onScroll)
                return onScroll(event, x, y);
            }}
            initialOffset={initialOffset}
            rowRenderer={itemGetter}
            dataProvider={dataSource}
            layoutProvider={layoutProvider.current}
            useWindowScroll={true}
            onEndReached={() => {
              clearTimeout(endReashedTimer.current)
              endReashedTimer.current = setTimeout(async () => {
                clearTimeout(endReashedTimer.current)
                if (userDrag.current)
                  await handleListEnd();
                clearTimeout(endReashedTimer.current)
              }, 500);

            }}
            onEndReachedThreshold={0.2}
            canChangeSize={true}
            renderFooter={() => {
              return <View style={{ height: itemHeight || 100 }}></View>
            }}
          />
        ) : null
      }
    </View>
  );
};

export default ItemList;

const styles = StyleSheet.create({
  container: {
    justifyContent: 'space-around',
    flex: 1,
    margin: 2,
    overflow: "hidden",
  },

  containers: {
    justifyContent: "space-between",
    flexGrow: 1,
    padding: 0,
    margin: 0
  },

  listContainer: {
    flex: 1,
    minHeight: 10,
    minWidth: 10,
  },
});

and here is how I call it

      {state.data && state.data.length > 0 ? (
        <ItemList
          isHorizontal={false}
          itemHeight={75}
          seperator={true}
          onItemPress={(item, index) => itemClick(item)}
          items={state.data ?? []}
          renderItem={(type: any, item: any, index: any, width: any) => renderItem(type, item, index, width)}
          onEndReached={() => {
            console.log("enReached")
            if (state.currentParser.searchPagination && !state.endResult)
              state.effectTrigger++;
          }}
        />
      ) : null}

[AlenToma]

Ok was able to fix this by creating new LayoutProvider each time the size change.

as calProductWidth somehow return the old value instead of the updated one.

this is a bug in my opinion as each time i create new LayoutProvider the scroll gets misset upp a little which I could live with

  useEffect(() => {
    layoutProvider.current = new LayoutProvider(
      (index) => {
        return 0;
      },
      (type, dim, index) => {
        dim.width = calProductWidth()
        dim.height = itemHeight ?? 30;
      },
    );
  }, [productWidth, containerWidth])

[OmarJay1]

I had a similar problem and I fixed it by adding a variable height style to the RowRenderer. I update the height with a global variable, which isn't very nice, but I have only 1 copy of the list in my app.

      Dimensions.addEventListener('change', () => {

        this.setState({dataProvider: this.state.dataProvider.cloneWithRows(this.props.data)});        

       g_width = Dimensions.get('screen').width;
}