ReactNative:如何使文本居中? [英] ReactNative: how to center text?

问题描述

如何在 ReactNative 中水平和垂直居中文本?

How to center Text in ReactNative both in horizontal and vertical?

我在 rnplay.org 中有一个示例应用程序，其中 justifyContent="center" 和 alignItems="center" 不起作用:https://rnplay.org/apps/AoxNKQ

I have an example application in rnplay.org where justifyContent="center" and alignItems="center" is not working: https://rnplay.org/apps/AoxNKQ

文本应该居中.为什么文本(黄色)和父容器之间的顶部有一个边距?

The text should being centered. And why is there a margin at the top between the text (yellow) and parent container?

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{'
'}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;

推荐答案

From headline' style remove height, justifyContent and alignItems.它将垂直居中文本.添加 textAlign: 'center' 它将使文本水平居中.

From headline' style remove height, justifyContent and alignItems. It will center the text vertically. Add textAlign: 'center' and it will center the text horizontally.

  headline: {
    textAlign: 'center', // <-- the magic
    fontWeight: 'bold',
    fontSize: 18,
    marginTop: 0,
    width: 200,
    backgroundColor: 'yellow',
  }

这篇关于ReactNative:如何使文本居中?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！