Picker ( 选择容器)

Canvas绘制更快渲染速度,自研滚动算法不会在滚动结束的时候回弹，使用了虚拟列表原理,只会绘制需要滚动显示的数据,不用担心数据量大影响渲染速度

支持平台

安卓	ios	鸿蒙	web	微信小程序
√	√	√	√	√

示例代码

<template>
	<t-page main-class="p-30">
		<t-card main-class="mb-30" title="Picker 选择容器" sub-title="Canvas绘制更快渲染速度,自研滚动算法不会在滚动结束的时候回弹"></t-card>
		<t-card main-class="mb-30" title="亮点" sub-title="Canvas绘制,使用了虚拟列表原理,只会绘制需要滚动显示的数据,不用担心数据量大影响渲染速度"></t-card>
		<t-section title='基础使用-数据不关联(自由控制)' main-class="mb-30"></t-section>
		<t-picker class="tdr mb-30" :value="pickerIds" @change="pickerchange">
			<t-picker-column :list="province"></t-picker-column>
			<t-picker-column :list="city"></t-picker-column>
			<t-picker-column :list="area"></t-picker-column>
		</t-picker>
		<t-section title='header展示' main-class="mb-30"></t-section>
		<!-- <t-picker class="tdr-mb.30" :show-unit="true">
			<t-picker-column :list="province" unit="省"></t-picker-column>
			<t-picker-column :list="city" unit="市"></t-picker-column>
			<t-picker-column :list="area" unit="区"></t-picker-column>
		</t-picker> -->
		<t-section title='选中的值' main-class="mb-30"></t-section>
		<t-col main-class="tdr tdb mb-30 tdp">
			<t-text main-class="mb-30">选中的ID：{{pickerIds1.join(',')}}(方便数据库存储)</t-text>
			<t-text>选中Value：{{pickerValue.join('-')}}</t-text>
		</t-col>
		<t-col main-class="tdr tdb mb-30 tdp fww">
			<t-button @click="updateList" main-class="mb-30" type='s'>修改第三列列表</t-button>
			<t-button @click="updateValue" main-class="mb-30" type='p'>修改第三列的值</t-button>
			<t-button @click="updArrteAValue" type='e'>直接修改数组</t-button>
		</t-col>
		<t-section title='数据关联用法见日期选择和城市选择组件' main-class="mb-30"></t-section>
		<t-col main-class="tdr tdb mb-30 tdp">
			<t-button type="p" main-class="mb-30 "
				path="/pagesA/form/datetime-picker/datetime-picker">日期选择组件</t-button>
			<t-button type='s' path="/pagesA/form/pca-picker/pca-picker">城市选择组件</t-button>
		</t-col>
	</t-page>
</template>
<script setup>
	const pickerIns = ref<TPickerComponentPublicInstance | null>(null)
	const direction = ref<string>('vertical')
	const province = ref<UTSJSONObject[]>([
		{ partenid: "0", id: "1", title: '四川省' },
		{ partenid: "0", id: "2", title: '重庆市' },
		{ partenid: "0", id: "3", title: '广东省' }, // 广州是广东省的一个城市
		{ partenid: "0", id: "4", title: '上海市' }
	]);

	const city = ref<UTSJSONObject[]>([
		{ partenid: "1", id: "11", title: '成都市' },
		{ partenid: "1", id: "12", title: '绵阳市' },
		{ partenid: "2", id: "21", title: '渝中区' },
		{ partenid: "2", id: "22", title: '江北区' },
		{ partenid: "3", id: "31", title: '广州市' },
		{ partenid: "3", id: "32", title: '深圳市' },
		{ partenid: "4", id: "41", title: '黄浦区' },
		{ partenid: "4", id: "42", title: '徐汇区' }
	]);

	const area = ref<UTSJSONObject[]>([
		{ partenid: "11", id: "111", title: '武侯区' },
		{ partenid: "11", id: "112", title: '青羊区' },
		{ partenid: "12", id: "121", title: '涪城区' },
		{ partenid: "12", id: "122", title: '游仙区' },
		{ partenid: "21", id: "211", title: '解放碑街道' },
		{ partenid: "21", id: "212", title: '南岸区' },
		{ partenid: "22", id: "221", title: '观音桥街道' },
		{ partenid: "22", id: "222", title: '江北城街道' },
		{ partenid: "31", id: "311", title: '越秀区' },
		{ partenid: "31", id: "312", title: '天河区' },
		{ partenid: "32", id: "321", title: '福田区' },
		{ partenid: "32", id: "322", title: '罗湖区' },
	])
	const area1 = ref<UTSJSONObject[]>([
		{ partenid: "41", id: "411", title: '外滩街道' },
		{ partenid: "41", id: "412", title: '南京东路街道' },
		{ partenid: "42", id: "421", title: '徐家汇街道' },
		{ partenid: "42", id: "422", title: '漕河泾街道' }
	]);
	const pickerIds = ref<string[]>(['3', '32', '322'])
	const pickerIds1 = ref<string[]>(['3', '32', '322'])
	const pickerValue = ref<string[]>([])
	function ontouchstart() {
		// #ifdef APP-IOS
		direction.value = "none"
		// #endif
	}
	function ontouchend() {
		// #ifdef APP-IOS
		direction.value = "vertical"
		// #endif
	}
	function pickerchange(e : UTSJSONObject) {
		pickerValue.value = e.getArray<string>('values')!
		pickerIds1.value = e.getArray<string>('ids')!
	}
	function updateList() {
		pickerIds.value[2] = "422"
		area.value = area1.value
	}
	function updateValue() {
		pickerIds.value = ['3', '32', '311']
	}
	function updArrteAValue() {
		pickerIds.value = ['4', '21', '222']
	}
</script>

属性

名称	类型	默认值	说明	可选值
size	String	mini	组件尺寸	large(大尺寸), medium(中尺寸), small(小尺寸), mini(迷你)
type	String	""	组件类型	info(信息), primary(正常), error(错误), warning(警告), success(成功)
disabled	Boolean	false	组件是否禁用	false, true
stop	Boolean	false	是否阻止事件冒泡（Tui统一写法处理事件冒泡）	false, true
hover	Boolean	true	是否有点击效果	false, true
path	String	""	点击组件后跳转的页面路径，如果为空则响应点击事件，如果不为空则跳转页面不会响应单击事件。	-
mainClass	String	""	组件根节点的样式	-
nativeClass	String	""	组件根节点原生样式	-
effect	String	"normal"	组件显示主题	normal(正常), dark(深色), light(浅色), plain(镂空)
value	string[]	[]	绑定的值，为数组，每个元素对应一列的选中值
rowHeight	Number	50	行高
showUnit	Boolean	false	是否显示单位

事件

名称	返回参数	说明
change	(e : UTSJSONObject)	当列的选中值发生变化时触发

插槽

名称	返回值	说明
default	-