React Native学习七- button

Z时代
2024-01-10
分类：综合

react

一个简单的跨平台的按钮组件。可以进行一些简单的定制。

如果这个组件外观并不怎么搭配你的设计，那你可以使用TouchableOpacity或是TouchableNativeFeedback组件来制作自己所需要的按钮，****如何制作一个按钮讲述了完整的过程。或者你也可以在github.com网站上搜索'react

native button'来看看社区其他人的作品。

用法示例：

<Button
  onPress={onPressLearnMore}
  title="Learn More"
  color="#841584"
  accessibilityLabel="Learn more about this purple button"
/>

属性

accessibilityLabel
string #

用于给残障人士显示的文本（比如读屏器软件可能会读取这一内容）

color color #

文本的颜色(iOS)，或是按钮的背景色(Android)

disabled
bool #

设置为true时此按钮将不可点击

onPress
function #

用户点击此按钮时所调用的处理函数

title
string #

按钮内显示的文本

例子

use strict';
const React = require('react');
const ReactNative = require('react-native');
const {
  Alert,
  Button,
  View,
} = ReactNative;
const onButtonPress = () => {
  Alert.alert('Button has been pressed!');
};
exports.displayName = 'ButtonExample';
exports.framework = 'React';
exports.title = '<Button>';
exports.description = 'Simple React Native button component.';
exports.examples = [
  {
    title: 'Simple Button',
    description: 'The title and onPress handler are required. It is ' +
      'recommended to set accessibilityLabel to help make your app usable by ' +
      'everyone.',
    render: function() {
      return (
        <Button
          onPress={onButtonPress}
          title="Press Me"
          accessibilityLabel="See an informative alert"
        />
      );
    },
  },
  {
    title: 'Adjusted color',
    description: 'Adjusts the color in a way that looks standard on each ' +
      'platform. On iOS, the color prop controls the color of the text. On ' +
      'Android, the color adjusts the background color of the button.',
    render: function() {
      return (
        <Button
          onPress={onButtonPress}
          title="Press Purple"
          color="#841584"
          accessibilityLabel="Learn more about purple"
        />
      );
    },
  },
  {
    title: 'Fit to text layout',
    description: 'This layout strategy lets the title define the width of ' +
      'the button',
    render: function() {
      return (
        <View style={{flexDirection: 'row', justifyContent: 'space-between'}}>
          <Button
            onPress={onButtonPress}
            title="This looks great!"
            accessibilityLabel="This sounds great!"
          />
          <Button
            onPress={onButtonPress}
            title="Ok!"
            color="#841584"
            accessibilityLabel="Ok, Great!"
          />
        </View>
      );
    },
  },
  {
    title: 'Disabled Button',
    description: 'All interactions for the component are disabled.',
    render: function() {
      return (
        <Button
          disabled
          onPress={onButtonPress}
          title="I Am Disabled"
          accessibilityLabel="See an informative alert"
        />
      );
    },
  },
];