全宽按钮带有柔性盒,反应原生

Question

我是flexbox的新手,无法在react-native中生成全宽按钮.我一直想把自己搞清楚一天,并且已经阅读了互联网上的每篇相关文章/帖子都无济于事.

我希望有两个TextInput元素跨越屏幕的整个宽度,它们下方的按钮也跨越屏幕的整个宽度.该TextInput元素是横跨屏幕的整个宽度,但是这似乎是在默认情况下,我运行Android模拟器.

这是我的代码:

 var MyModule = React.createClass({
render: function() {
    return (
        <View style={styles.container}>
            <View style={styles.headline}>
                <Text>Hello World</Text>
            </View>

            <View style={styles.inputsContainer}>
                <TextInput style={[styles.input]} placeholder="Email" />
                <TextInput
                    secureTextEntry={true}
                    style={[styles.input]}
                    placeholder="Password"
                />
                <TouchableHighlight
                    style={styles.fullWidthButton}
                    onPress={this.buttonPressed}
                >
                    <Text>Submit</Text>
                </TouchableHighlight>
            </View>
        </View>
    );
},
buttonPressed: function() {
    console.log("button was pressed!");
}
});

var paddingLeft = 15;

var styles = StyleSheet.create({
inputsContainer: {
    // Intentionally blank because I've tried everything & I'm clueless
},
fullWidthButton: {
    // Intentionally blank because I've tried everything & I'm clueless
},
input: {
    paddingLeft: paddingLeft,
    height: 40,
    borderColor: "black",
    backgroundColor: "white"
},
container: {
    flex: 1,
    backgroundColor: "#f0f0f0",
    alignItems: "stretch"
},
headline: {}
});

module.exports = Onboarding;

任何人都知道我需要做什么TouchableHighlight来跨越屏幕的整个宽度？

Answer 1

我来这里寻找同样的问题.经过进一步的实验,我发现最简单的方法就是使用alignSelf: 'stretch'.这迫使单个元件占据可用的全宽度,例如

 button: {
    alignSelf: 'stretch'
 }

Nader的答案当然有效,但这似乎是使用Flexbox的正确方法.

Answer 2

您可以通过在TouchableHighlight的父元素上设置flex:1属性,然后将flexDirection:row属性分配给TouchableHighlight元素来实现此目的:

<View style={styles.inputsContainer}>
    <TouchableHighlight style={styles.fullWidthButton} onPress={this.buttonPressed}>
        <Text style={styles.fullWidthButtonText}>Submit</Text>
    </TouchableHighlight>
</View>

  inputsContainer: {
    flex: 1
  },
  fullWidthButton: {
    backgroundColor: 'blue',
    height:70,
    flexDirection: 'row',
    justifyContent: 'center',
    alignItems: 'center'
  },
  fullWidthButtonText: {
    fontSize:24,
    color: 'white'
  }

我已经建立了一个完整的工作示例在这里.此外,完整代码如下.

https://rnplay.org/apps/J6fnqg

'use strict';

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

var MyModule = React.createClass({
  render: function() {
    return <View style={styles.container}>

      <View style={styles.headline}>
        <Text>Hello World</Text>
      </View>

      <View style={styles.inputsContainer}>

        <TextInput style={[styles.input]} placeholder="Email" />
        <TextInput secureTextEntry={true} style={[styles.input]} placeholder="Password" />
        <TouchableHighlight style={styles.fullWidthButton} onPress={this.buttonPressed}>
          <Text style={styles.fullWidthButtonText}>Submit</Text>
        </TouchableHighlight>

      </View>
    </View>
  },
  buttonPressed: function() {
    console.log('button was pressed!');
  }
});

var paddingLeft = 15;


var styles = StyleSheet.create({
  inputsContainer: {
    flex: 1
  },
  fullWidthButton: {
    backgroundColor: 'blue',
    height:70,
    flexDirection: 'row',
    justifyContent: 'center',
    alignItems: 'center'
  },
  fullWidthButtonText: {
    fontSize:24,
    color: 'white'
  },
  input: {
    paddingLeft: paddingLeft,
    height: 40,
    borderColor: 'black',
    backgroundColor: 'white',
  },
  container: {
    flex: 1,
    backgroundColor: '#f0f0f0',
    alignItems: 'stretch',
  },
  headline: {
  }
});



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

Answer 3

提供的解决方案对我不起作用。您必须将按钮包装在附加View组件中：

<View style={{flexDirection: "row"}}>
    <View style = {{flex: 1}}>
        <Button title="Button 1" />
    </View>
    <View style = {{flex: 1}}>
       <Button title="Button 2" />
    </View>
</View>

或者将该Text组件与以下命令一起使用TouchableOpacity：

<View style={{ flexDirection: "row"}}>
    <TouchableOpacity style = {{width: "50%"}}>
        <Text style={{textAlign:"center"}} > Button 1 </Text>
    </TouchableOpacity>
    <TouchableOpacity style = {{width: "50%"}}>
        <Text style={{textAlign:"center"}} > Button 1 </Text>
    </TouchableOpacity>
</View>

在这里尝试这两种解决方案： https: //snack.expo.io/wAENhUQrp

• justifyContent: 'space-between'没有使用按钮的所有可用空间
• button {alignSelf: 'stretch'}不适用于 Button 组件