每行显示 2 个项目[反应原生] [英] show 2 items per row[react native]

问题描述

我正在学习 react native，在所有教程中，我看到 ListView 只使用了每行 1 个项目.不过，我没有使用过 ListView.我只有 6 个项目必须显示为平面网格，每行 2 个项目并且应该是响应式的.我知道这是一个基本问题，但我也从我这边尝试过，可以在图像中看到

I am learning react native and in all the tutorials i see ListView has been used with only 1 items per row. I have not used ListView, though. I have only 6 items that has to be shown as flat grid with 2 items per row and should be responsive. I know its a basic question, but i have tried from my side too which can be seen in the image

这是我的代码

 renderDeviceEventList() {
    return _.map(this.props.deviceEventOptions, deviceEventOption => (
        <View key={deviceEventOption.id}>
            <Icon
                name={deviceEventOption.icon_name}
                color="#ddd"
                size={30}
                onPress={() =>
                    this.props.selectDeviceEvent(deviceEventOption)
                }
            />
            <Text style={{ color: "#ff4c4c" }}>
                {deviceEventOption.icon_name}
            </Text>
        </View>
    ));
}
render() {
    return (
        <View
            style={{
                flex: 1,
                top: 60,
                flexDirection: "row",
                justifyContent: "space-around",
                flexWrap: "wrap",
                marginBottom: 10
            }}
        >
            {this.renderDeviceEventList()}
        </View>
    );
}

推荐答案

要使用 ListView 制作 2 行网格，您可以使用以下代码作为示例:

To make a 2 row grid using ListView you could use this code as an example:

renderGridItem( item ){
    return (<TouchableOpacity style={styles.gridItem}>
        <View style={[styles.gridItemImage, justifyContent:'center', alignItems:'center'}]}>
            <Text style={{fontSize:25, color:'white'}}>
                {item.fields.name.charAt(0).toUpperCase()}
            </Text>
        </View>
        <Text style={styles.gridItemText}>{item.fields.name}</Text> 
    </TouchableOpacity>
    );
}

renderCategories(){

    var listItems = this.dsinit.cloneWithRows(this.state.dataSource);

    return (
        <ScrollView style={{backgroundColor: '#E8E8E8', flex: 1}} >
            <ListView 
                contentContainerStyle={styles.grid}
                dataSource={listItems}
                renderRow={(item) => this.renderGridItem(item)}
            />
        </ScrollView>
    );
}

const styles = StyleSheet.create({
    grid: {
        justifyContent: 'center',
        flexDirection: 'row',
        flexWrap: 'wrap',
        flex: 1,
    },
    gridItem: {
        margin:5,
        width: 150,
        height: 150,
        justifyContent: 'center',
        alignItems: 'center',
    },
    gridItemImage: {
        width: 100,
        height: 100,
        borderWidth: 1.5, 
        borderColor: 'white',
        borderRadius: 50,
    },
    gridItemText: {
        marginTop: 5,
        textAlign:'center',
    },
});

更改样式以选择要在屏幕上看到的行数.此代码具有响应性.

Change styles to choose how many rows you want to see on screen. This code is responsive.

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