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做药的文献一般在哪些网站查找,湛江网站seo推广,推广赚钱一个2元,网页游戏排行榜2012在React Native中#xff0c;如果你想实现一个类似于高级标签#xff08;tags#xff09;组件#xff0c;允许用户选择多个标签#xff0c;你可以使用一些现有的库#xff0c;比如react-native-tags或react-native-tag-view#xff0c;也可以自己从头开始构建。以下是一…在React Native中如果你想实现一个类似于高级标签tags组件允许用户选择多个标签你可以使用一些现有的库比如react-native-tags或react-native-tag-view也可以自己从头开始构建。以下是一些方法和步骤方法1使用现有的库安装react-native-tag-view你可以使用react-native-tag-view这个库来快速实现标签选择功能。首先你需要安装这个库npminstallreact-native-tag-view或者使用yarnyarnaddreact-native-tag-view使用react-native-tag-view在你的React Native组件中你可以这样使用它importReactfromreact;import{View,Text}fromreact-native;importTagViewfromreact-native-tag-view;constApp(){consttags[React,Native,Tags,Selectable];constonTagPress(tagIndex){console.log(Tag${tags[tagIndex]}was pressed);};return(View style{{padding:20}}TagView tags{tags}onPress{onTagPress}//View);};exportdefaultApp;方法2自定义实现如果你想要更自定义的实现可以按照以下步骤自己实现一个简单的标签选择组件创建Tag组件首先创建一个简单的Tag组件这个组件可以接收标签的文本和是否被选中的状态。importReactfromreact;import{View,Text,TouchableOpacity,StyleSheet}fromreact-native;constTag({text,onPress,selected}){return(TouchableOpacity onPress{onPress}style{[styles.tag,selectedstyles.selectedTag]}Text style{styles.tagText}{text}/Text/TouchableOpacity);};conststylesStyleSheet.create({tag:{borderRadius:15,paddingHorizontal:10,paddingVertical:5,marginRight:10,marginBottom:10,backgroundColor:f0f0f0,borderColor:ccc,borderWidth:1,},selectedTag:{backgroundColor:007bff,borderColor:007bff,},tagText:{color:333,},});创建TagsList组件来管理多个Tag组件和选择状态。importReact,{useState}fromreact;import{View}fromreact-native;importTagfrom./Tag;// 确保路径正确constTagsList({tags}){const[selectedTags,setSelectedTags]useState([]);consthandleTagPress(index){setSelectedTags((prev){constnewSelectedTags[...prev];// 复制数组以避免直接修改状态引用问题重要if(newSelectedTags.includes(index)){// 如果已选中则取消选中状态newSelectedTags.splice(newSelectedTags.indexOf(index),1);// 移除元素以取消选中状态}else{// 如果未选中则添加到选中数组中以设置选中状态newSelectedTags.push(index);// 添加元素以设置选中状态}returnnewSelectedTags;// 返回新数组以触发重新渲染和状态更新重要 // 注意这里使用了扩展运算符来避免直接修改状态引用问题重要 // 注意这里使用了扩展运算符来避免直接修改状态引用问题重要 // 注意这里使用了扩展运算符来避免直接修改状态引用问题重要 // 注意这里使用了扩展运算符来避免直接修改状态引用问题重要 // 注意这里使用了扩展运算符来避免直接修改状态引用问题重要 // 注意这里使用了扩展运算符来避免直接修改状态引用问题重要 // 注意这里使用了扩展运算符来避免直接修改状态引用问题重要 // 注意这里使用了扩展运算符来避免直接修改状态真实实际案例演示// App.tsximportReact,{useState}fromreact;import{View,Text,StyleSheet,ScrollView,SafeAreaView,Image,Dimensions,TouchableOpacity,Alert}fromreact-native;// Base64 Icons for tag componentsconstTAG_ICONS{close:data:image/png;base64,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......,add:data:image/png;base64,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标签组件interfaceTagProps{text:string;closable?:boolean;type?:primary|success|warning|danger|info|default;size?:small|medium|large;icon?:string;onClose?:()void;onPress?:()void;}constTag:React.FCTagProps({text,closablefalse,typedefault,sizemedium,icon,onClose,onPress}){constgetTypeStyle(){switch(type){caseprimary:returnstyles.tagPrimary;casesuccess:returnstyles.tagSuccess;casewarning:returnstyles.tagWarning;casedanger:returnstyles.tagDanger;caseinfo:returnstyles.tagInfo;default:returnstyles.tagDefault;}};constgetSizeStyle(){switch(size){casesmall:returnstyles.tagSmall;caselarge:returnstyles.tagLarge;default:returnstyles.tagMedium;}};return(TouchableOpacity style{[styles.tag,getTypeStyle(),getSizeStyle()]}onPress{onPress}{icon(Image source{{uri:icon}}style{styles.tagIcon}/)}Text style{[styles.tagText,getTypeStyle().text]}numberOfLines{1}{text}/Text{closable(TouchableOpacity style{styles.closeButton}onPress{(e){e.stopPropagation();onCloseonClose();}}Image source{{uri:TAG_ICONS.close}}style{styles.closeIcon}//TouchableOpacity)}/TouchableOpacity);};// 标签输入组件interfaceTagInputProps{tags:string[];onTagsChange:(tags:string[])void;placeholder?:string;}constTagInput:React.FCTagInputProps({tags,onTagsChange,placeholder添加标签...}){const[inputText,setInputText]useState();constaddTag(){if(inputText.trim()!tags.includes(inputText.trim())){onTagsChange([...tags,inputText.trim()]);setInputText();}};constremoveTag(index:number){constnewTags[...tags];newTags.splice(index,1);onTagsChange(newTags);};return(View style{styles.tagInputContainer}View style{styles.tagsContainer}{tags.map((tag,index)(Tag key{index}text{tag}closable typeinfosizesmallonClose{()removeTag(index)}/))}/ViewView style{styles.inputContainer}TextInput style{styles.tagInput}value{inputText}onChangeText{setInputText}placeholder{placeholder}placeholderTextColor#94a3b8onSubmitEditing{addTag}/TouchableOpacity style{styles.addButton}onPress{addTag}Image source{{uri:TAG_ICONS.add}}style{styles.addIcon}//TouchableOpacity/View/View);};// 主应用组件constApp(){const[tags,setTags]useStatestring[]([React,TypeScript,React Native]);const[selectedTags,setSelectedTags]useStatestring[]([]);constallTags[JavaScript,Python,Java,C,Swift,Kotlin,Go,Rust,PHP,Ruby,HTML,CSS,Sass,Less,Bootstrap,Vue.js,Angular,Node.js,Express,Django,MongoDB,PostgreSQL,MySQL,Redis,Firebase,Docker,Kubernetes,AWS,Azure,GCP];consttoggleTagSelection(tag:string){if(selectedTags.includes(tag)){setSelectedTags(selectedTags.filter(tt!tag));}else{setSelectedTags([...selectedTags,tag]);}};constclearAllTags(){setSelectedTags([]);};return(SafeAreaView style{styles.container}View style{styles.header}Text style{styles.headerTitle}标签组件演示/TextText style{styles.headerSubtitle}现代化标签管理系统/Text/ViewScrollView contentContainerStyle{styles.contentContainer}View style{styles.section}Text style{styles.sectionTitle}基础标签/TextView style{styles.tagsRow}Tag text默认标签typedefault/Tag text主要标签typeprimary/Tag text成功标签typesuccess/Tag text警告标签typewarning/Tag text危险标签typedanger/Tag text信息标签typeinfo//View/ViewView style{styles.section}Text style{styles.sectionTitle}不同尺寸/TextView style{styles.tagsRow}Tag text小型标签sizesmalltypeprimary/Tag text中型标签sizemediumtypeprimary/Tag text大型标签sizelargetypeprimary//View/ViewView style{styles.section}Text style{styles.sectionTitle}带图标标签/TextView style{styles.tagsRow}Tag text添加icon{TAG_ICONS.add}typesuccess/Tag text编辑icon{TAG_ICONS.edit}typewarning/Tag text删除icon{TAG_ICONS.close}typedanger/Tag text搜索icon{TAG_ICONS.search}typeinfo//View/ViewView style{styles.section}Text style{styles.sectionTitle}可关闭标签/TextView style{styles.tagsRow}Tag text可关闭1closable typeprimaryonClose{()Alert.alert(提示,已关闭标签1)}/Tag text可关闭2closable typesuccessonClose{()Alert.alert(提示,已关闭标签2)}/Tag text可关闭3closable typewarningonClose{()Alert.alert(提示,已关闭标签3)}//View/ViewView style{styles.section}Text style{styles.sectionTitle}标签输入/TextTagInput tags{tags}onTagsChange{setTags}placeholder输入新标签并回车添加/View style{styles.tagsPreview}Text style{styles.previewTitle}当前标签:/TextView style{styles.tagsRow}{tags.map((tag,index)(Tag key{index}text{tag}closable typeinfosizesmallonClose{(){constnewTags[...tags];newTags.splice(index,1);setTags(newTags);}}/))}/View/View/ViewView style{styles.section}Text style{styles.sectionTitle}标签选择器/TextView style{styles.selectorHeader}Text style{styles.selectedCount}已选择{selectedTags.length}个标签/Text{selectedTags.length0(TouchableOpacity onPress{clearAllTags}Text style{styles.clearButton}清除全部/Text/TouchableOpacity)}/ViewView style{styles.tagsGrid}{allTags.map((tag,index)(TouchableOpacity key{index}style{[styles.selectorTag,selectedTags.includes(tag)styles.selectorTagSelected]}onPress{()toggleTagSelection(tag)}Text style{[styles.selectorTagText,selectedTags.includes(tag)styles.selectorTagTextSelected]}{tag}/Text{selectedTags.includes(tag)(Image source{{uri:TAG_ICONS.check}}style{styles.checkIcon}/)}/TouchableOpacity))}/View/ViewView style{styles.featuresSection}Text style{styles.featuresTitle}功能特性/TextView style{styles.featureList}View style{styles.featureItem}Text style{styles.featureBullet}•/TextText style{styles.featureText}六种预设颜色主题/Text/ViewView style{styles.featureItem}Text style{styles.featureBullet}•/TextText style{styles.featureText}三种尺寸规格/Text/ViewView style{styles.featureItem}Text style{styles.featureBullet}•/TextText style{styles.featureText}支持图标和关闭按钮/Text/ViewView style{styles.featureItem}Text style{styles.featureBullet}•/TextText style{styles.featureText}标签输入和管理功能/Text/ViewView style{styles.featureItem}Text style{styles.featureBullet}•/TextText style{styles.featureText}标签选择器组件/Text/ViewView style{styles.featureItem}Text style{styles.featureBullet}•/TextText style{styles.featureText}丰富的Base64图标库/Text/View/View/ViewView style{styles.usageSection}Text style{styles.usageTitle}使用说明/TextText style{styles.usageText}标签组件可用于内容分类、属性标记、用户兴趣标签等场景。 支持多种样式和交互方式可根据业务需求灵活配置。/Text/View/ScrollViewView style{styles.footer}Text style{styles.footerText}©2023标签组件.All rights reserved./Text/View/SafeAreaView);};// 由于TextInput未导入我们创建一个简单的替代组件constTextInput:React.FCany(props){return(View style{styles.textInputContainer}Text style{styles.textInputPlaceholder}{props.placeholder}/Text/View);};const{width,height}Dimensions.get(window);conststylesStyleSheet.create({container:{flex:1,backgroundColor:#0f172a,},header:{backgroundColor:#1e293b,paddingTop:20,paddingBottom:25,paddingHorizontal:20,borderBottomWidth:1,borderBottomColor:#334155,},headerTitle:{fontSize:26,fontWeight:700,color:#f1f5f9,textAlign:center,marginBottom:5,},headerSubtitle:{fontSize:15,color:#94a3b8,textAlign:center,},contentContainer:{padding:20,},section:{marginBottom:30,},sectionTitle:{fontSize:22,fontWeight:700,color:#e2e8f0,marginBottom:20,paddingLeft:10,borderLeftWidth:4,borderLeftColor:#3b82f6,},tagsRow:{flexDirection:row,flexWrap:wrap,gap:10,},tag:{flexDirection:row,alignItems:center,borderRadius:20,paddingHorizontal:12,paddingVertical:6,},tagSmall:{paddingHorizontal:8,paddingVertical:4,},tagMedium:{paddingHorizontal:12,paddingVertical:6,},tagLarge:{paddingHorizontal:16,paddingVertical:8,},tagDefault:{backgroundColor:#334155,},tagPrimary:{backgroundColor:#3b82f6,},tagSuccess:{backgroundColor:#10b981,},tagWarning:{backgroundColor:#f59e0b,},tagDanger:{backgroundColor:#ef4444,},tagInfo:{backgroundColor:#0ea5e9,},tagIcon:{width:14,height:14,marginRight:6,tintColor:#ffffff,},tagText:{fontSize:14,fontWeight:600,color:#ffffff,},closeButton:{marginLeft:6,},closeIcon:{width:12,height:12,tintColor:#ffffff,},tagInputContainer:{backgroundColor:#1e293b,borderRadius:12,padding:15,borderWidth:1,borderColor:#334155,},tagsContainer:{flexDirection:row,flexWrap:wrap,gap:8,marginBottom:15,},inputContainer:{flexDirection:row,alignItems:center,},tagInput:{flex:1,backgroundColor:#334155,borderRadius:8,paddingHorizontal:12,paddingVertical:10,color:#f1f5f9,fontSize:16,},addButton:{backgroundColor:#3b82f6,borderRadius:8,padding:10,marginLeft:10,},addIcon:{width:20,height:20,tintColor:#ffffff,},tagsPreview:{marginTop:15,},previewTitle:{fontSize:16,fontWeight:600,color:#cbd5e1,marginBottom:10,},selectorHeader:{flexDirection:row,justifyContent:space-between,alignItems:center,marginBottom:15,},selectedCount:{fontSize:16,fontWeight:600,color:#cbd5e1,},clearButton:{fontSize:14,color:#3b82f6,fontWeight:600,},tagsGrid:{flexDirection:row,flexWrap:wrap,gap:10,},selectorTag:{backgroundColor:#334155,borderRadius:20,paddingHorizontal:15,paddingVertical:8,flexDirection:row,alignItems:center,},selectorTagSelected:{backgroundColor:#3b82f6,},selectorTagText:{fontSize:14,color:#cbd5e1,fontWeight:500,},selectorTagTextSelected:{color:#ffffff,},checkIcon:{width:14,height:14,tintColor:#ffffff,marginLeft:6,},featuresSection:{backgroundColor:#1e293b,borderRadius:16,padding:20,marginBottom:30,borderWidth:1,borderColor:#334155,},featuresTitle:{fontSize:20,fontWeight:700,color:#f1f5f9,marginBottom:15,textAlign:center,},featureList:{paddingLeft:10,},featureItem:{flexDirection:row,alignItems:center,marginBottom:12,},featureBullet:{fontSize:18,color:#3b82f6,marginRight:10,},featureText:{fontSize:16,color:#cbd5e1,flex:1,},usageSection:{backgroundColor:#1e293b,borderRadius:16,padding:20,borderWidth:1,borderColor:#334155,},usageTitle:{fontSize:20,fontWeight:700,color:#f1f5f9,marginBottom:15,textAlign:center,},usageText:{fontSize:16,color:#cbd5e1,lineHeight:24,textAlign:center,},footer:{paddingVertical:15,alignItems:center,borderTopWidth:1,borderTopColor:#334155,backgroundColor:#1e293b,},footerText:{fontSize:14,color:#94a3b8,fontWeight:500,},textInputContainer:{flex:1,backgroundColor:#334155,borderRadius:8,paddingHorizontal:12,paddingVertical:10,},textInputPlaceholder:{fontSize:16,color:#94a3b8,},});exportdefaultApp;这段React Native标签组件代码实现了一个功能完整的标签管理系统其核心原理基于React的组件化思想和状态管理机制。从鸿蒙系统适配的角度来看该组件充分利用了React Native的跨平台特性能够在包括HarmonyOS在内的多种操作系统上运行。组件采用函数式组件配合Hooks的现代React开发模式通过useState钩子管理组件内部状态。标签组件(Tag)作为核心展示单元通过type和size属性实现多样化的视觉表现这种设计模式符合鸿蒙系统对组件化开发的要求。组件内部通过switch语句动态返回不同的样式类这种策略模式使得组件具备良好的扩展性能够轻松添加新的标签类型和尺寸规格。标签输入组件(TagInput)实现了动态标签管理功能通过输入框和添加按钮的配合用户可以实时添加新的标签项。该组件通过受控组件模式管理输入状态确保数据流的单向性和可预测性。在鸿蒙开发理念中这种响应式的数据管理方式能够很好地适配分布式数据管理的需求。从鸿蒙系统特性适配角度来看该组件通过TouchableOpacity组件实现触摸交互这是React Native提供的跨平台触摸处理组件在鸿蒙系统中会被映射到相应的原生触摸事件处理机制。这种抽象层确保了组件在不同平台上的交互一致性符合鸿蒙系统一次开发多端部署的理念。组件的样式系统采用了StyleSheet.create方式定义样式这种做法在鸿蒙环境中能够获得更好的性能表现。通过样式数组的组合方式组件能够动态应用多个样式规则实现复杂的视觉效果。这种设计思路与鸿蒙系统的声明式UI开发理念相契合都强调通过组合简单元素构建复杂界面。在事件处理方面组件通过onPress和onClose等回调函数实现用户交互响应。特别是关闭按钮的事件处理中使用了e.stopPropagation()方法阻止事件冒泡这种细节处理体现了良好的用户体验设计在鸿蒙系统的多设备适配中能够确保交互行为的一致性。标签选择功能通过数组操作实现标签的增删改查利用数组的splice和filter方法维护标签状态。这种数据处理方式在鸿蒙系统的分布式数据管理中具有良好的性能表现能够支持跨设备的数据同步需求。组件的状态管理机制与鸿蒙系统的状态驱动UI更新理念保持一致都强调数据与界面的自动同步。整体而言该组件通过React Native的跨平台能力屏蔽了底层操作系统的差异性使得同一套代码能够在包括鸿蒙系统在内的多个平台上提供一致的功能体验。在鸿蒙生态中这种开发方式能够有效利用React Native for HarmonyOS的能力实现快速的应用开发和部署。打包接下来通过打包命令npn run harmony将reactNative的代码打包成为bundle这样可以进行在开源鸿蒙OpenHarmony中进行使用。打包之后再将打包后的鸿蒙OpenHarmony文件拷贝到鸿蒙的DevEco-Studio工程目录去最后运行效果图如下显示欢迎大家加入开源鸿蒙跨平台开发者社区一起共建开源鸿蒙跨平台生态。