importReact,{Component}from'react';import{AppRegistry,StyleSheet,Text,View,PixelRatio,TouchableOpacity,Picker,}from'react-native';classhelloextendsComponent{constructor(props){super(props);this.state={language:null};}render(){return(<View style={{flex:1,marginTop:40}}><Picker selectedValue={this.stat...
我正在尝试为 react-native 选择器添加一些样式,例如底层和设置占位符,但无法这样做。 const styles = StyleSheet.create({ picker: { textDecorationLine: 'underline' } }); <Picker style={[styles.picker]}> <Picker.Item label="Country" value="" /> <Picker.Item label="United States" value="US" ...
react-native link react-native-picker 然后就可以使用了,具体看文档 例如 import Picker from 'react-native-picker'; let data = []; for(var i=0;i<100;i++){ data.push(i); } Picker.init({ pickerData: data, selectedValue: [59], onPickerConfirm: data => { console.log(data); }, onP...
return <Picker.Item key={i} label={key} value={key} /> } render() { return ( <View style={styles.container}> <Text style={styles.text}>{this.state.firstValue+this.state.secondValue+this.state.thirdValue}</Text> <View style={styles.pickerViewContainer}> <Picker style={styles.picker...
Picker设置style可以修改布局样式,但是修改不了字体样式,Picker.Item style属性Android不支持。 <Pickerstyle={{flex:1,padding:0,height:32}}> 另一种是在android\app\src\main\res\values\styles.xml中修改 <resources><!-- Base application theme. --><stylename="AppTheme"parent="Theme.AppCompat.Light....
Picker, Text, View } from'react-native'; exportdefaultclassPickerDemoextendsComponent { state={ selected:' ', dropdown:' ', } render() { return( <View style={styles.container}> <Picker prompt="弹框Dialog" style={styles.picker}
在使用react native 组件picker 的时候需要设置picker的样式,在Android style中设置去更改显示的样式修改res/value/style 文件...
Picker实例 来看看实例演示的效果图,如下: 实例代码 代码语言:javascript 复制 importReact,{Component}from'react';import{AppRegistry,StyleSheet,Picker,Text,View}from'react-native';exportdefaultclassPickerDemoextendsComponent{state={selected:' ',dropdown:' ',}render(){return(<View style={styles.container}...
React Native 选择器 Picker 如果要从多个已知的选项中选择一个,那么可以使用 React Native 内置的选择器 ``。 选择器 `` 类似于 HTML 中的 select 标签 。 选择器 `` 默认显示如下 当被点击时显示如下 引入组件 import{Picker}from'react-native' ...
Import Picker from @react-native-picker/picker:import {Picker} from '@react-native-picker/picker';Create state which will be used by the Picker:const [selectedLanguage, setSelectedLanguage] = useState();Add Picker like this:<Picker selectedValue={selectedLanguage} onValueChange={(itemValue, item...