如何将文本居中?

如何在ReactNative的水平和垂直中心文本?

我在rnplay.org中有一个示例应用程序，其中justifyContent=“中心”和alignItems=“中心”是不工作的: https://rnplay.org/apps/AoxNKQ

文字应该居中。为什么在顶部的文本(黄色)和父容器之间有一个边距?

代码:

'use strict';

var React = require('react-native');
var {
  AppRegistry,
  StyleSheet,
  Text,
  Image,
  View,
} = React;

var SampleApp = React.createClass({
  render: function() {
    return (
            <View style={styles.container}>
                <View style={styles.topBox}>
                    <Text style={styles.headline}>lorem ipsum{'\n'}ipsum lorem lorem</Text>

                </View>
                <View style={styles.otherContainer}>
                </View>
            </View>
    );
  }
});

var styles = StyleSheet.create({

    container: {
        flex: 1,
        flexDirection: 'column',
        backgroundColor: 'red',
        justifyContent: 'center',
        alignItems: 'center',
    },

    topBox: {
        flex: 1,
        flexDirection: 'row',
        backgroundColor: 'lightgray',
        justifyContent: 'center',
        alignItems: 'center',
    },
    headline: {
        fontWeight: 'bold',
        fontSize: 18,
    marginTop: 0,
        width: 200,
        height: 80,
    backgroundColor: 'yellow',
        justifyContent: 'center',
        alignItems: 'center',
    },

  otherContainer: {
        flex: 4,
        justifyContent: 'center',
        alignItems: 'center',
    backgroundColor: 'green',
    },


});

AppRegistry.registerComponent('SampleApp', () => SampleApp);

module.exports = SampleApp;

当前回答

水平和垂直中心对齐

<View style={{flex: 1, justifyContent: 'center',alignItems: 'center'}}>
     <Text> Example Test </Text>
</View>

2018-09-04 08:48:49

其他回答

const styles = StyleSheet.create({
        navigationView: {
        height: 44,
        width: '100%',
        backgroundColor:'darkgray',
        justifyContent: 'center', 
        alignItems: 'center' 
    },
    titleText: {
        fontSize: 20,
        fontWeight: 'bold',
        color: 'white',
        textAlign: 'center',
    },
})


render() {
    return (
        <View style = { styles.navigationView }>
            <Text style = { styles.titleText } > Title name here </Text>
        </View>
    )

}

2017-11-13 03:23:19

你可以使用两种方法:

To make text align center horizontally, apply this Property (textAlign:"center"). Now to make the text align vertically, first check direction of flex. If flexDirection is column apply property (justifyContent:"center") and if flexDirection is row is row apply property (alignItems : "center") . To Make text align center apply same property (textAlign:"center"). Now to make it align vertically make the hieght of the <Text> </Text> equal to view and then apply property (textAlignVertical: "center")...

它很可能会起作用……

2020-09-24 11:15:19

<View style={{alignSelf:'center'}}>
<Text>React Native</Text>
</View>

2022-12-22 13:15:32

已经回答了，但我想在这个主题上添加更多内容，并根据您的用例添加不同的方法。

你可以添加adjustsFontSizeToFit={true}(目前没有文档)到文本组件来自动调整父节点内的大小。

  <Text adjustsFontSizeToFit={true} numberOfLines={1}>Hiiiz</Text>

您还可以在文本组件中添加以下内容:

<Text style={{textAlignVertical: "center",textAlign: "center",}}>Hiiiz</Text>

或者你可以将以下内容添加到Text组件的父组件中:

<View style={{flex:1,justifyContent: "center",alignItems: "center"}}>
     <Text>Hiiiz</Text>
</View>

或两个

 <View style={{flex:1,justifyContent: "center",alignItems: "center"}}>
     <Text style={{textAlignVertical: "center",textAlign: "center",}}>Hiiiz</Text>
</View>

或者三者都有

 <View style={{flex:1,justifyContent: "center",alignItems: "center"}}>
     <Text adjustsFontSizeToFit={true} 
           numberOfLines={1} 
           style={{textAlignVertical: "center",textAlign: "center",}}>Hiiiz</Text>
</View>

这一切都取决于你在做什么。你也可以查看我关于这个主题的完整博客文章

https://medium.com/@vygaio/how-to-auto-adjust-text-font-size-to-fit-into-a-nodes-width-in-react-native-9f7d1d68305b

2017-07-19 17:04:00

除了其他答案中提到的用例之外:

要将文本置于BottomTabNavigator的特定用例的中央，请记住将showIcon设置为false(即使TabNavigator中没有图标)。否则，文本将被推到Tab的底部。

例如:

const TabNavigator = createBottomTabNavigator({
  Home: HomeScreen,
  Settings: SettingsScreen
}, {
  tabBarOptions: {
    activeTintColor: 'white',
    inactiveTintColor: 'black',
    showIcon: false, //do this
    labelStyle: {
      fontSize: 20,
      textAlign: 'center',
    },
    tabStyle: {
      backgroundColor: 'grey',
      marginTop: 0,
      textAlign: 'center',
      justifyContent: 'center',
      textAlignVertical: "center"
    }
  }

2019-01-07 05:26:31

如何将文本居中?

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