uview-ui/components/u-picker/u-picker.vue - dali_platform/mobile - Gitiles

 <template>
 	<u-popup :maskCloseAble="maskCloseAble" mode="bottom" :popup="false" v-model="value" length="auto" :safeAreaInsetBottom="safeAreaInsetBottom" @close="close" :z-index="uZIndex">
 		<view class="u-datetime-picker">
 			<view class="u-picker-header" @touchmove.stop.prevent="">
 				<view class="u-btn-picker u-btn-picker--tips"
 					:style="{ color: cancelColor }"
 					hover-class="u-opacity"
 					:hover-stay-time="150"
 					@tap="getResult('cancel')"
 				>{{cancelText}}</view>
 				<view class="u-picker__title">{{ title }}</view>
 				<view
 					class="u-btn-picker u-btn-picker--primary"
 					:style="{ color: moving ? cancelColor : confirmColor }"
 					hover-class="u-opacity"
 					:hover-stay-time="150"
 					@touchmove.stop=""
 					@tap.stop="getResult('confirm')"
 				>
 					{{confirmText}}
 				</view>
 			</view>
 			<view class="u-picker-body">
 				<picker-view v-if="mode == 'region'" :value="valueArr" @change="change" class="u-picker-view" @pickstart="pickstart" @pickend="pickend">
 					<picker-view-column v-if="!reset && params.province">
 						<view class="u-column-item" v-for="(item, index) in provinces" :key="index">
 							<view class="u-line-1">{{ item.label }}</view>
 						</view>
 					</picker-view-column>
 					<picker-view-column v-if="!reset && params.city">
 						<view class="u-column-item" v-for="(item, index) in citys" :key="index">
 							<view class="u-line-1">{{ item.label }}</view>
 						</view>
 					</picker-view-column>
 					<picker-view-column v-if="!reset && params.area">
 						<view class="u-column-item" v-for="(item, index) in areas" :key="index">
 							<view class="u-line-1">{{ item.label }}</view>
 						</view>
 					</picker-view-column>
 				</picker-view>
 				<picker-view v-else-if="mode == 'time'" :value="valueArr" @change="change" class="u-picker-view" @pickstart="pickstart" @pickend="pickend">
 					<picker-view-column v-if="!reset && params.year">
 						<view class="u-column-item" v-for="(item, index) in years" :key="index">
 							{{ item }}
 							<text class="u-text" v-if="showTimeTag">年</text>
 						</view>
 					</picker-view-column>
 					<picker-view-column v-if="!reset && params.month">
 						<view class="u-column-item" v-for="(item, index) in months" :key="index">
 							{{ formatNumber(item) }}
 							<text class="u-text" v-if="showTimeTag">月</text>
 						</view>
 					</picker-view-column>
 					<picker-view-column v-if="!reset && params.day">
 						<view class="u-column-item" v-for="(item, index) in days" :key="index">
 							{{ formatNumber(item) }}
 							<text class="u-text" v-if="showTimeTag">日</text>
 						</view>
 					</picker-view-column>
 					<picker-view-column v-if="!reset && params.hour">
 						<view class="u-column-item" v-for="(item, index) in hours" :key="index">
 							{{ formatNumber(item) }}
 							<text class="u-text" v-if="showTimeTag">时</text>
 						</view>
 					</picker-view-column>
 					<picker-view-column v-if="!reset && params.minute">
 						<view class="u-column-item" v-for="(item, index) in minutes" :key="index">
 							{{ formatNumber(item) }}
 							<text class="u-text" v-if="showTimeTag">分</text>
 						</view>
 					</picker-view-column>
 					<picker-view-column v-if="!reset && params.second">
 						<view class="u-column-item" v-for="(item, index) in seconds" :key="index">
 							{{ formatNumber(item) }}
 							<text class="u-text" v-if="showTimeTag">秒</text>
 						</view>
 					</picker-view-column>
 				</picker-view>
 				<picker-view v-else-if="mode == 'selector'" :value="valueArr" @change="change" class="u-picker-view" @pickstart="pickstart" @pickend="pickend">
 					<picker-view-column v-if="!reset">
 						<view class="u-column-item" v-for="(item, index) in range" :key="index">
 							<view class="u-line-1">{{ getItemValue(item, 'selector') }}</view>
 						</view>
 					</picker-view-column>
 				</picker-view>
 				<picker-view v-else-if="mode == 'multiSelector'" :value="valueArr" @change="change" class="u-picker-view" @pickstart="pickstart" @pickend="pickend">
 					<picker-view-column v-if="!reset" v-for="(item, index) in range" :key="index">
 						<view class="u-column-item" v-for="(item1, index1) in item" :key="index1">
 							<view class="u-line-1">{{ getItemValue(item1, 'multiSelector') }}</view>
 						</view>
 					</picker-view-column>
 				</picker-view>
 			</view>
 		</view>
 	</u-popup>
 </template>

 <script>
 import provinces from '../../libs/util/province.js';
 import citys from '../../libs/util/city.js';
 import areas from '../../libs/util/area.js';

 /**
  * picker picker弹出选择器
  * @description 此选择器有两种弹出模式：一是时间模式，可以配置年，日，月，时，分，秒参数 二是地区模式，可以配置省，市，区参数
  * @tutorial https://www.uviewui.com/components/picker.html
  * @property {Object} params 需要显示的参数，见官网说明
  * @property {String} mode 模式选择，region-地区类型，time-时间类型（默认time）
  * @property {String Number} start-year 可选的开始年份，mode=time时有效（默认1950）
  * @property {String Number} end-year 可选的结束年份，mode=time时有效（默认2050）
  * @property {Boolean} safe-area-inset-bottom 是否开启底部安全区适配（默认false）
  * @property {Boolean} show-time-tag 时间模式时，是否显示后面的年月日中文提示
  * @property {String} cancel-color 取消按钮的颜色（默认#606266）
  * @property {String} confirm-color 确认按钮的颜色（默认#2979ff）
  * @property {String} default-time 默认选中的时间，mode=time时有效
  * @property {String} confirm-text 确认按钮的文字
  * @property {String} cancel-text 取消按钮的文字
  * @property {String} default-region 默认选中的地区，中文形式，mode=region时有效
  * @property {String} default-code 默认选中的地区，编号形式，mode=region时有效
  * @property {Boolean} mask-close-able 是否允许通过点击遮罩关闭Picker（默认true）
  * @property {String Number} z-index 弹出时的z-index值（默认1075）
  * @property {Array} default-selector 数组形式，其中每一项表示选择了range对应项中的第几个
  * @property {Array} range 自定义选择的数据，mode=selector或mode=multiSelector时有效
  * @property {String} range-key 当range参数的元素为对象时，指定Object中的哪个key的值作为选择器显示内容
  * @event {Function} confirm 点击确定按钮，返回当前选择的值
  * @event {Function} cancel 点击取消按钮，返回当前选择的值
  * @example <u-picker v-model="show" mode="time"></u-picker>
  */
 export default {
 	name: 'u-picker',
 	props: {
 		// picker中需要显示的参数
 		params: {
 			type: Object,
 			default() {
 				return {
 					year: true,
 					month: true,
 					day: true,
 					hour: false,
 					minute: false,
 					second: false,
 					province: true,
 					city: true,
 					area: true,
 					timestamp: true,
 				};
 			}
 		},
 		// 当mode=selector或者mode=multiSelector时，提供的数组
 		range: {
 			type: Array,
 			default() {
 				return [];
 			}
 		},
 		// 当mode=selector或者mode=multiSelector时，提供的默认选中的下标
 		defaultSelector: {
 			type: Array,
 			default() {
 				return [0];
 			}
 		},
 		// 当 range 是一个 Array＜Object＞ 时，通过 range-key 来指定 Object 中 key 的值作为选择器显示内容
 		rangeKey: {
 			type: String,
 			default: ''
 		},
 		// 模式选择，region-地区类型，time-时间类型，selector-单列模式，multiSelector-多列模式
 		mode: {
 			type: String,
 			default: 'time'
 		},
 		// 年份开始时间
 		startYear: {
 			type: [String, Number],
 			default: 1950
 		},
 		// 年份结束时间
 		endYear: {
 			type: [String, Number],
 			default: 2050
 		},
 		// "取消"按钮的颜色
 		cancelColor: {
 			type: String,
 			default: '#606266'
 		},
 		// "确定"按钮的颜色
 		confirmColor: {
 			type: String,
 			default: '#2979ff'
 		},
 		// 默认显示的时间，2025-07-02 || 2025-07-02 13:01:00 || 2025/07/02
 		defaultTime: {
 			type: String,
 			default: ''
 		},
 		// 默认显示的地区，可传类似["河北省", "秦皇岛市", "北戴河区"]
 		defaultRegion: {
 			type: Array,
 			default() {
 				return [];
 			}
 		},
 		// 时间模式时，是否显示后面的年月日中文提示
 		showTimeTag: {
 			type: Boolean,
 			default: true
 		},
 		// 默认显示地区的编码，defaultRegion和areaCode同时存在，areaCode优先，可传类似["13", "1303", "130304"]
 		areaCode: {
 			type: Array,
 			default() {
 				return [];
 			}
 		},
 		safeAreaInsetBottom: {
 			type: Boolean,
 			default: false
 		},
 		// 是否允许通过点击遮罩关闭Picker
 		maskCloseAble: {
 			type: Boolean,
 			default: true
 		},
 		// 通过双向绑定控制组件的弹出与收起
 		value: {
 			type: Boolean,
 			default: false
 		},
 		// 弹出的z-index值
 		zIndex: {
 			type: [String, Number],
 			default: 0
 		},
 		// 顶部标题
 		title: {
 			type: String,
 			default: ''
 		},
 		// 取消按钮的文字
 		cancelText: {
 			type: String,
 			default: '取消'
 		},
 		// 确认按钮的文字
 		confirmText: {
 			type: String,
 			default: '确认'
 		}
 	},
 	data() {
 		return {
 			years: [],
 			months: [],
 			days: [],
 			hours: [],
 			minutes: [],
 			seconds: [],
 			year: 0,
 			month: 0,
 			day: 0,
 			hour: 0,
 			minute: 0,
 			second: 0,
 			reset: false,
 			startDate: '',
 			endDate: '',
 			valueArr: [],
 			provinces: provinces,
 			citys: citys[0],
 			areas: areas[0][0],
 			province: 0,
 			city: 0,
 			area: 0,
 			moving: false // 列是否还在滑动中，微信小程序如果在滑动中就点确定，结果可能不准确
 		};
 	},
 	mounted() {
 		this.init();
 	},
 	computed: {
 		propsChange() {
 			// 引用这几个变量，是为了监听其变化
 			return `${this.mode}-${this.defaultTime}-${this.startYear}-${this.endYear}-${this.defaultRegion}-${this.areaCode}`;
 		},
 		regionChange() {
 			// 引用这几个变量，是为了监听其变化
 			return `${this.province}-${this.city}`;
 		},
 		yearAndMonth() {
 			return `${this.year}-${this.month}`;
 		},
 		uZIndex() {
 			// 如果用户有传递z-index值，优先使用
 			return this.zIndex ? this.zIndex : this.$u.zIndex.popup;
 		}
 	},
 	watch: {
 		propsChange() {
 			this.reset = true;
 			setTimeout(() => this.init(), 10);
 		},
 		// 如果地区发生变化，为了让picker联动起来，必须重置this.citys和this.areas
 		regionChange(val) {
 			this.citys = citys[this.province];
 			this.areas = areas[this.province][this.city];
 		},
 		// watch监听月份的变化，实时变更日的天数，因为不同月份，天数不一样
 		// 一个月可能有30，31天，甚至闰年2月的29天，平年2月28天
 		yearAndMonth(val) {
 			if (this.params.year) this.setDays();
 		},
 		// 微信和QQ小程序由于一些奇怪的原因(故同时对所有平台均初始化一遍)，需要重新初始化才能显示正确的值
 		value(n) {
 			if (n) {
 				this.reset = true;
 				setTimeout(() => this.init(), 10);
 			}
 		}
 	},
 	methods: {
 		// 标识滑动开始，只有微信小程序才有这样的事件
 		pickstart() {
 			// #ifdef MP-WEIXIN
 			this.moving = true;
 			// #endif
 		},
 		// 标识滑动结束
 		pickend() {
 			// #ifdef MP-WEIXIN
 			this.moving = false;
 			// #endif
 		},
 		// 对单列和多列形式的判断是否有传入变量的情况
 		getItemValue(item, mode) {
 			// 目前(2020-05-25)uni-app对微信小程序编译有错误，导致v-if为false中的内容也执行，错误导致
 			// 单列模式或者多列模式中的getItemValue同时被执行，故在这里再加一层判断
 			if (this.mode == mode) {
 				return typeof item == 'object' ? item[this.rangeKey] : item;
 			}
 		},
 		// 小于10前面补0，用于月份，日期，时分秒等
 		formatNumber(num) {
 			return +num < 10 ? '0' + num : String(num);
 		},
 		// 生成递进的数组
 		generateArray: function(start, end) {
 			// 转为数值格式，否则用户给end-year等传递字符串值时，下面的end+1会导致字符串拼接，而不是相加
 			start = Number(start);
 			end = Number(end);
 			end = end > start ? end : start;
 			// 生成数组，获取其中的索引，并剪出来
 			return [...Array(end + 1).keys()].slice(start);
 		},
 		getIndex: function(arr, val) {
 			let index = arr.indexOf(val);
 			// 如果index为-1(即找不到index值)，~(-1)=-(-1)-1=0，导致条件不成立
 			return ~index ? index : 0;
 		},
 		//日期时间处理
 		initTimeValue() {
 			// 格式化时间，在IE浏览器(uni不存在此情况)，无法识别日期间的"-"间隔符号
 			let fdate = this.defaultTime.replace(/\-/g, '/');
 			fdate = fdate && fdate.indexOf('/') == -1 ? `2020/01/01 ${fdate}` : fdate;
 			let time = null;
 			if (fdate) time = new Date(fdate);
 			else time = new Date();
 			// 获取年日月时分秒
 			this.year = time.getFullYear();
 			this.month = Number(time.getMonth()) + 1;
 			this.day = time.getDate();
 			this.hour = time.getHours();
 			this.minute = time.getMinutes();
 			this.second = time.getSeconds();
 		},
 		init() {
 			this.valueArr = [];
 			this.reset = false;
 			if (this.mode == 'time') {
 				this.initTimeValue();
 				if (this.params.year) {
 					this.valueArr.push(0);
 					this.setYears();
 				}
 				if (this.params.month) {
 					this.valueArr.push(0);
 					this.setMonths();
 				}
 				if (this.params.day) {
 					this.valueArr.push(0);
 					this.setDays();
 				}
 				if (this.params.hour) {
 					this.valueArr.push(0);
 					this.setHours();
 				}
 				if (this.params.minute) {
 					this.valueArr.push(0);
 					this.setMinutes();
 				}
 				if (this.params.second) {
 					this.valueArr.push(0);
 					this.setSeconds();
 				}
 			} else if (this.mode == 'region') {
 				if (this.params.province) {
 					this.valueArr.push(0);
 					this.setProvinces();
 				}
 				if (this.params.city) {
 					this.valueArr.push(0);
 					this.setCitys();
 				}
 				if (this.params.area) {
 					this.valueArr.push(0);
 					this.setAreas();
 				}
 			} else if (this.mode == 'selector') {
 				this.valueArr = this.defaultSelector;
 			} else if (this.mode == 'multiSelector') {
 				this.valueArr = this.defaultSelector;
 				this.multiSelectorValue = this.defaultSelector;
 			}
 			this.$forceUpdate();
 		},
 		// 设置picker的某一列值
 		setYears() {
 			// 获取年份集合
 			this.years = this.generateArray(this.startYear, this.endYear);
 			// 设置this.valueArr某一项的值，是为了让picker预选中某一个值
 			this.valueArr.splice(this.valueArr.length - 1, 1, this.getIndex(this.years, this.year));
 		},
 		setMonths() {
 			this.months = this.generateArray(1, 12);
 			this.valueArr.splice(this.valueArr.length - 1, 1, this.getIndex(this.months, this.month));
 		},
 		setDays() {
 			let totalDays = new Date(this.year, this.month, 0).getDate();
 			this.days = this.generateArray(1, totalDays);
 			let index = 0;
 			// 这里不能使用类似setMonths()中的this.valueArr.splice(this.valueArr.length - 1, xxx)做法
 			// 因为this.month和this.year变化时，会触发watch中的this.setDays()，导致this.valueArr.length计算有误
 			if (this.params.year && this.params.month) index = 2;
 			else if (this.params.month) index = 1;
 			else if (this.params.year) index = 1;
 			else index = 0;
 			// 当月份变化时，会导致日期的天数也会变化，如果原来选的天数大于变化后的天数，则重置为变化后的最大值
 			// 比如原来选中3月31日，调整为2月后，日期变为最大29，这时如果day值继续为31显然不合理，于是将其置为29(picker-column从1开始)
 			if(this.day > this.days.length) this.day = this.days.length;
 			this.valueArr.splice(index, 1, this.getIndex(this.days, this.day));
 		},
 		setHours() {
 			this.hours = this.generateArray(0, 23);
 			this.valueArr.splice(this.valueArr.length - 1, 1, this.getIndex(this.hours, this.hour));
 		},
 		setMinutes() {
 			this.minutes = this.generateArray(0, 59);
 			this.valueArr.splice(this.valueArr.length - 1, 1, this.getIndex(this.minutes, this.minute));
 		},
 		setSeconds() {
 			this.seconds = this.generateArray(0, 59);
 			this.valueArr.splice(this.valueArr.length - 1, 1, this.getIndex(this.seconds, this.second));
 		},
 		setProvinces() {
 			// 判断是否需要province参数
 			if (!this.params.province) return;
 			let tmp = '';
 			let useCode = false;
 			// 如果同时配置了defaultRegion和areaCode，优先使用areaCode参数
 			if (this.areaCode.length) {
 				tmp = this.areaCode[0];
 				useCode = true;
 			} else if (this.defaultRegion.length) tmp = this.defaultRegion[0];
 			else tmp = 0;
 			// 历遍省份数组匹配
 			provinces.map((v, k) => {
 				if (useCode ? v.value == tmp : v.label == tmp) {
 					tmp = k;
 				}
 			});
 			this.province = tmp;
 			this.provinces = provinces;
 			// 设置默认省份的值
 			this.valueArr.splice(0, 1, this.province);
 		},
 		setCitys() {
 			if (!this.params.city) return;
 			let tmp = '';
 			let useCode = false;
 			if (this.areaCode.length) {
 				tmp = this.areaCode[1];
 				useCode = true;
 			} else if (this.defaultRegion.length) tmp = this.defaultRegion[1];
 			else tmp = 0;
 			citys[this.province].map((v, k) => {
 				if (useCode ? v.value == tmp : v.label == tmp) {
 					tmp = k;
 				}
 			});
 			this.city = tmp;
 			this.citys = citys[this.province];
 			this.valueArr.splice(1, 1, this.city);
 		},
 		setAreas() {
 			if (!this.params.area) return;
 			let tmp = '';
 			let useCode = false;
 			if (this.areaCode.length) {
 				tmp = this.areaCode[2];
 				useCode = true;
 			} else if (this.defaultRegion.length) tmp = this.defaultRegion[2];
 			else tmp = 0;
 			areas[this.province][this.city].map((v, k) => {
 				if (useCode ? v.value == tmp : v.label == tmp) {
 					tmp = k;
 				}
 			});
 			this.area = tmp;
 			this.areas = areas[this.province][this.city];
 			this.valueArr.splice(2, 1, this.area);
 		},
 		close() {
 			this.$emit('input', false);
 		},
 		// 用户更改picker的列选项
 		change(e) {
 			this.valueArr = e.detail.value;
 			let i = 0;
 			if (this.mode == 'time') {
 				// 这里使用i++，是因为this.valueArr数组的长度是不确定长度的，它根据this.params的值来配置长度
 				// 进入if规则，i会加1，保证了能获取准确的值
 				if (this.params.year) this.year = this.years[this.valueArr[i++]];
 				if (this.params.month) this.month = this.months[this.valueArr[i++]];
 				if (this.params.day) this.day = this.days[this.valueArr[i++]];
 				if (this.params.hour) this.hour = this.hours[this.valueArr[i++]];
 				if (this.params.minute) this.minute = this.minutes[this.valueArr[i++]];
 				if (this.params.second) this.second = this.seconds[this.valueArr[i++]];
 			} else if (this.mode == 'region') {
 				if (this.params.province) this.province = this.valueArr[i++];
 				if (this.params.city) this.city = this.valueArr[i++];
 				if (this.params.area) this.area = this.valueArr[i++];
 			} else if (this.mode == 'multiSelector') {
 				let index = null;
 				// 对比前后两个数组，寻找变更的是哪一列，如果某一个元素不同，即可判定该列发生了变化
 				this.defaultSelector.map((val, idx) => {
 					if (val != e.detail.value[idx]) index = idx;
 				});
 				// 为了让用户对多列变化时，对动态设置其他列的变更
 				if (index != null) {
 					this.$emit('columnchange', {
 						column: index,
 						index: e.detail.value[index]
 					});
 				}
 			}
 		},
 		// 用户点击确定按钮
 		getResult(event = null) {
 			// #ifdef MP-WEIXIN
 			if (this.moving) return;
 			// #endif
 			let result = {};
 			// 只返回用户在this.params中配置了为true的字段
 			if (this.mode == 'time') {
 				if (this.params.year) result.year = this.formatNumber(this.year || 0);
 				if (this.params.month) result.month = this.formatNumber(this.month || 0);
 				if (this.params.day) result.day = this.formatNumber(this.day || 0);
 				if (this.params.hour) result.hour = this.formatNumber(this.hour || 0);
 				if (this.params.minute) result.minute = this.formatNumber(this.minute || 0);
 				if (this.params.second) result.second = this.formatNumber(this.second || 0);
 				if (this.params.timestamp) result.timestamp = this.getTimestamp();
 			} else if (this.mode == 'region') {
 				if (this.params.province) result.province = provinces[this.province];
 				if (this.params.city) result.city = citys[this.province][this.city];
 				if (this.params.area) result.area = areas[this.province][this.city][this.area];
 			} else if (this.mode == 'selector') {
 				result = this.valueArr;
 			} else if (this.mode == 'multiSelector') {
 				result = this.valueArr;
 			}
 			if (event) this.$emit(event, result);
 			this.close();
 		},
 		// 获取时间戳
 		getTimestamp() {
 			// yyyy-mm-dd为安卓写法，不支持iOS，需要使用"/"分隔，才能二者兼容
 			let time = this.year + '/' + this.month + '/' + this.day + ' ' + this.hour + ':' + this.minute + ':' + this.second;
 			return new Date(time).getTime() / 1000;
 		}
 	}
 };
 </script>

 <style lang="scss" scoped>
 @import '../../libs/css/style.components.scss';

 .u-datetime-picker {
 	position: relative;
 	z-index: 999;
 }

 .u-picker-view {
 	height: 100%;
 	box-sizing: border-box;
 }

 .u-picker-header {
 	width: 100%;
 	height: 90rpx;
 	padding: 0 40rpx;
 	@include vue-flex;
 	justify-content: space-between;
 	align-items: center;
 	box-sizing: border-box;
 	font-size: 30rpx;
 	background: #fff;
 	position: relative;
 }

 .u-picker-header::after {
 	content: '';
 	position: absolute;
 	border-bottom: 1rpx solid #eaeef1;
 	-webkit-transform: scaleY(0.5);
 	transform: scaleY(0.5);
 	bottom: 0;
 	right: 0;
 	left: 0;
 }

 .u-picker__title {
 	color: $u-content-color;
 }

 .u-picker-body {
 	width: 100%;
 	height: 500rpx;
 	overflow: hidden;
 	background-color: #fff;
 }

 .u-column-item {
 	@include vue-flex;
 	align-items: center;
 	justify-content: center;
 	font-size: 32rpx;
 	color: $u-main-color;
 	padding: 0 8rpx;
 }

 .u-text {
 	font-size: 24rpx;
 	padding-left: 8rpx;
 }

 .u-btn-picker {
 	padding: 16rpx;
 	box-sizing: border-box;
 	text-align: center;
 	text-decoration: none;
 }

 .u-opacity {
 	opacity: 0.5;
 }

 .u-btn-picker--primary {
 	color: $u-type-primary;
 }

 .u-btn-picker--tips {
 	color: $u-tips-color;
 }
 </style>
	<template>
	<u-popup :maskCloseAble="maskCloseAble" mode="bottom" :popup="false" v-model="value" length="auto" :safeAreaInsetBottom="safeAreaInsetBottom" @close="close" :z-index="uZIndex">
	<view class="u-datetime-picker">
	<view class="u-picker-header" @touchmove.stop.prevent="">
	<view class="u-btn-picker u-btn-picker--tips"
	:style="{ color: cancelColor }"
	hover-class="u-opacity"
	:hover-stay-time="150"
	@tap="getResult('cancel')"
	>{{cancelText}}</view>
	<view class="u-picker__title">{{ title }}</view>
	<view
	class="u-btn-picker u-btn-picker--primary"
	:style="{ color: moving ? cancelColor : confirmColor }"
	hover-class="u-opacity"
	:hover-stay-time="150"
	@touchmove.stop=""
	@tap.stop="getResult('confirm')"
	>
	{{confirmText}}
	</view>
	</view>
	<view class="u-picker-body">
	<picker-view v-if="mode == 'region'" :value="valueArr" @change="change" class="u-picker-view" @pickstart="pickstart" @pickend="pickend">
	<picker-view-column v-if="!reset && params.province">
	<view class="u-column-item" v-for="(item, index) in provinces" :key="index">
	<view class="u-line-1">{{ item.label }}</view>
	</view>
	</picker-view-column>
	<picker-view-column v-if="!reset && params.city">
	<view class="u-column-item" v-for="(item, index) in citys" :key="index">
	<view class="u-line-1">{{ item.label }}</view>
	</view>
	</picker-view-column>
	<picker-view-column v-if="!reset && params.area">
	<view class="u-column-item" v-for="(item, index) in areas" :key="index">
	<view class="u-line-1">{{ item.label }}</view>
	</view>
	</picker-view-column>
	</picker-view>
	<picker-view v-else-if="mode == 'time'" :value="valueArr" @change="change" class="u-picker-view" @pickstart="pickstart" @pickend="pickend">
	<picker-view-column v-if="!reset && params.year">
	<view class="u-column-item" v-for="(item, index) in years" :key="index">
	{{ item }}
	<text class="u-text" v-if="showTimeTag">年</text>
	</view>
	</picker-view-column>
	<picker-view-column v-if="!reset && params.month">
	<view class="u-column-item" v-for="(item, index) in months" :key="index">
	{{ formatNumber(item) }}
	<text class="u-text" v-if="showTimeTag">月</text>
	</view>
	</picker-view-column>
	<picker-view-column v-if="!reset && params.day">
	<view class="u-column-item" v-for="(item, index) in days" :key="index">
	{{ formatNumber(item) }}
	<text class="u-text" v-if="showTimeTag">日</text>
	</view>
	</picker-view-column>
	<picker-view-column v-if="!reset && params.hour">
	<view class="u-column-item" v-for="(item, index) in hours" :key="index">
	{{ formatNumber(item) }}
	<text class="u-text" v-if="showTimeTag">时</text>
	</view>
	</picker-view-column>
	<picker-view-column v-if="!reset && params.minute">
	<view class="u-column-item" v-for="(item, index) in minutes" :key="index">
	{{ formatNumber(item) }}
	<text class="u-text" v-if="showTimeTag">分</text>
	</view>
	</picker-view-column>
	<picker-view-column v-if="!reset && params.second">
	<view class="u-column-item" v-for="(item, index) in seconds" :key="index">
	{{ formatNumber(item) }}
	<text class="u-text" v-if="showTimeTag">秒</text>
	</view>
	</picker-view-column>
	</picker-view>
	<picker-view v-else-if="mode == 'selector'" :value="valueArr" @change="change" class="u-picker-view" @pickstart="pickstart" @pickend="pickend">
	<picker-view-column v-if="!reset">
	<view class="u-column-item" v-for="(item, index) in range" :key="index">
	<view class="u-line-1">{{ getItemValue(item, 'selector') }}</view>
	</view>
	</picker-view-column>
	</picker-view>
	<picker-view v-else-if="mode == 'multiSelector'" :value="valueArr" @change="change" class="u-picker-view" @pickstart="pickstart" @pickend="pickend">
	<picker-view-column v-if="!reset" v-for="(item, index) in range" :key="index">
	<view class="u-column-item" v-for="(item1, index1) in item" :key="index1">
	<view class="u-line-1">{{ getItemValue(item1, 'multiSelector') }}</view>
	</view>
	</picker-view-column>
	</picker-view>
	</view>
	</view>
	</u-popup>
	</template>

	<script>
	import provinces from '../../libs/util/province.js';
	import citys from '../../libs/util/city.js';
	import areas from '../../libs/util/area.js';

	/**
	* picker picker弹出选择器
	* @description 此选择器有两种弹出模式：一是时间模式，可以配置年，日，月，时，分，秒参数二是地区模式，可以配置省，市，区参数
	* @tutorial https://www.uviewui.com/components/picker.html
	* @property {Object} params 需要显示的参数，见官网说明
	* @property {String} mode 模式选择，region-地区类型，time-时间类型（默认time）
	* @property {String Number} start-year 可选的开始年份，mode=time时有效（默认1950）
	* @property {String Number} end-year 可选的结束年份，mode=time时有效（默认2050）
	* @property {Boolean} safe-area-inset-bottom 是否开启底部安全区适配（默认false）
	* @property {Boolean} show-time-tag 时间模式时，是否显示后面的年月日中文提示
	* @property {String} cancel-color 取消按钮的颜色（默认#606266）
	* @property {String} confirm-color 确认按钮的颜色（默认#2979ff）
	* @property {String} default-time 默认选中的时间，mode=time时有效
	* @property {String} confirm-text 确认按钮的文字
	* @property {String} cancel-text 取消按钮的文字
	* @property {String} default-region 默认选中的地区，中文形式，mode=region时有效
	* @property {String} default-code 默认选中的地区，编号形式，mode=region时有效
	* @property {Boolean} mask-close-able 是否允许通过点击遮罩关闭Picker（默认true）
	* @property {String Number} z-index 弹出时的z-index值（默认1075）
	* @property {Array} default-selector 数组形式，其中每一项表示选择了range对应项中的第几个
	* @property {Array} range 自定义选择的数据，mode=selector或mode=multiSelector时有效
	* @property {String} range-key 当range参数的元素为对象时，指定Object中的哪个key的值作为选择器显示内容
	* @event {Function} confirm 点击确定按钮，返回当前选择的值
	* @event {Function} cancel 点击取消按钮，返回当前选择的值
	* @example <u-picker v-model="show" mode="time"></u-picker>
	*/
	export default {
	name: 'u-picker',
	props: {
	// picker中需要显示的参数
	params: {
	type: Object,
	default() {
	return {
	year: true,
	month: true,
	day: true,
	hour: false,
	minute: false,
	second: false,
	province: true,
	city: true,
	area: true,
	timestamp: true,
	};
	}
	},
	// 当mode=selector或者mode=multiSelector时，提供的数组
	range: {
	type: Array,
	default() {
	return [];
	}
	},
	// 当mode=selector或者mode=multiSelector时，提供的默认选中的下标
	defaultSelector: {
	type: Array,
	default() {
	return [0];
	}
	},
	// 当 range 是一个 Array＜Object＞时，通过 range-key 来指定 Object 中 key 的值作为选择器显示内容
	rangeKey: {
	type: String,
	default: ''
	},
	// 模式选择，region-地区类型，time-时间类型，selector-单列模式，multiSelector-多列模式
	mode: {
	type: String,
	default: 'time'
	},
	// 年份开始时间
	startYear: {
	type: [String, Number],
	default: 1950
	},
	// 年份结束时间
	endYear: {
	type: [String, Number],
	default: 2050
	},
	// "取消"按钮的颜色
	cancelColor: {
	type: String,
	default: '#606266'
	},
	// "确定"按钮的颜色
	confirmColor: {
	type: String,
	default: '#2979ff'
	},
	// 默认显示的时间，2025-07-02 \|\| 2025-07-02 13:01:00 \|\| 2025/07/02
	defaultTime: {
	type: String,
	default: ''
	},
	// 默认显示的地区，可传类似["河北省", "秦皇岛市", "北戴河区"]
	defaultRegion: {
	type: Array,
	default() {
	return [];
	}
	},
	// 时间模式时，是否显示后面的年月日中文提示
	showTimeTag: {
	type: Boolean,
	default: true
	},
	// 默认显示地区的编码，defaultRegion和areaCode同时存在，areaCode优先，可传类似["13", "1303", "130304"]
	areaCode: {
	type: Array,
	default() {
	return [];
	}
	},
	safeAreaInsetBottom: {
	type: Boolean,
	default: false
	},
	// 是否允许通过点击遮罩关闭Picker
	maskCloseAble: {
	type: Boolean,
	default: true
	},
	// 通过双向绑定控制组件的弹出与收起
	value: {
	type: Boolean,
	default: false
	},
	// 弹出的z-index值
	zIndex: {
	type: [String, Number],
	default: 0
	},
	// 顶部标题
	title: {
	type: String,
	default: ''
	},
	// 取消按钮的文字
	cancelText: {
	type: String,
	default: '取消'
	},
	// 确认按钮的文字
	confirmText: {
	type: String,
	default: '确认'
	}
	},
	data() {
	return {
	years: [],
	months: [],
	days: [],
	hours: [],
	minutes: [],
	seconds: [],
	year: 0,
	month: 0,
	day: 0,
	hour: 0,
	minute: 0,
	second: 0,
	reset: false,
	startDate: '',
	endDate: '',
	valueArr: [],
	provinces: provinces,
	citys: citys[0],
	areas: areas[0][0],
	province: 0,
	city: 0,
	area: 0,
	moving: false // 列是否还在滑动中，微信小程序如果在滑动中就点确定，结果可能不准确
	};
	},
	mounted() {
	this.init();
	},
	computed: {
	propsChange() {
	// 引用这几个变量，是为了监听其变化
	return `${this.mode}-${this.defaultTime}-${this.startYear}-${this.endYear}-${this.defaultRegion}-${this.areaCode}`;
	},
	regionChange() {
	// 引用这几个变量，是为了监听其变化
	return `${this.province}-${this.city}`;
	},
	yearAndMonth() {
	return `${this.year}-${this.month}`;
	},
	uZIndex() {
	// 如果用户有传递z-index值，优先使用
	return this.zIndex ? this.zIndex : this.$u.zIndex.popup;
	}
	},
	watch: {
	propsChange() {
	this.reset = true;
	setTimeout(() => this.init(), 10);
	},
	// 如果地区发生变化，为了让picker联动起来，必须重置this.citys和this.areas
	regionChange(val) {
	this.citys = citys[this.province];
	this.areas = areas[this.province][this.city];
	},
	// watch监听月份的变化，实时变更日的天数，因为不同月份，天数不一样
	// 一个月可能有30，31天，甚至闰年2月的29天，平年2月28天
	yearAndMonth(val) {
	if (this.params.year) this.setDays();
	},
	// 微信和QQ小程序由于一些奇怪的原因(故同时对所有平台均初始化一遍)，需要重新初始化才能显示正确的值
	value(n) {
	if (n) {
	this.reset = true;
	setTimeout(() => this.init(), 10);
	}
	}
	},
	methods: {
	// 标识滑动开始，只有微信小程序才有这样的事件
	pickstart() {
	// #ifdef MP-WEIXIN
	this.moving = true;
	// #endif
	},
	// 标识滑动结束
	pickend() {
	// #ifdef MP-WEIXIN
	this.moving = false;
	// #endif
	},
	// 对单列和多列形式的判断是否有传入变量的情况
	getItemValue(item, mode) {
	// 目前(2020-05-25)uni-app对微信小程序编译有错误，导致v-if为false中的内容也执行，错误导致
	// 单列模式或者多列模式中的getItemValue同时被执行，故在这里再加一层判断
	if (this.mode == mode) {
	return typeof item == 'object' ? item[this.rangeKey] : item;
	}
	},
	// 小于10前面补0，用于月份，日期，时分秒等
	formatNumber(num) {
	return +num < 10 ? '0' + num : String(num);
	},
	// 生成递进的数组
	generateArray: function(start, end) {
	// 转为数值格式，否则用户给end-year等传递字符串值时，下面的end+1会导致字符串拼接，而不是相加
	start = Number(start);
	end = Number(end);
	end = end > start ? end : start;
	// 生成数组，获取其中的索引，并剪出来
	return [...Array(end + 1).keys()].slice(start);
	},
	getIndex: function(arr, val) {
	let index = arr.indexOf(val);
	// 如果index为-1(即找不到index值)，~(-1)=-(-1)-1=0，导致条件不成立
	return ~index ? index : 0;
	},
	//日期时间处理
	initTimeValue() {
	// 格式化时间，在IE浏览器(uni不存在此情况)，无法识别日期间的"-"间隔符号
	let fdate = this.defaultTime.replace(/\-/g, '/');
	fdate = fdate && fdate.indexOf('/') == -1 ? `2020/01/01 ${fdate}` : fdate;
	let time = null;
	if (fdate) time = new Date(fdate);
	else time = new Date();
	// 获取年日月时分秒
	this.year = time.getFullYear();
	this.month = Number(time.getMonth()) + 1;
	this.day = time.getDate();
	this.hour = time.getHours();
	this.minute = time.getMinutes();
	this.second = time.getSeconds();
	},
	init() {
	this.valueArr = [];
	this.reset = false;
	if (this.mode == 'time') {
	this.initTimeValue();
	if (this.params.year) {
	this.valueArr.push(0);
	this.setYears();
	}
	if (this.params.month) {
	this.valueArr.push(0);
	this.setMonths();
	}
	if (this.params.day) {
	this.valueArr.push(0);
	this.setDays();
	}
	if (this.params.hour) {
	this.valueArr.push(0);
	this.setHours();
	}
	if (this.params.minute) {
	this.valueArr.push(0);
	this.setMinutes();
	}
	if (this.params.second) {
	this.valueArr.push(0);
	this.setSeconds();
	}
	} else if (this.mode == 'region') {
	if (this.params.province) {
	this.valueArr.push(0);
	this.setProvinces();
	}
	if (this.params.city) {
	this.valueArr.push(0);
	this.setCitys();
	}
	if (this.params.area) {
	this.valueArr.push(0);
	this.setAreas();
	}
	} else if (this.mode == 'selector') {
	this.valueArr = this.defaultSelector;
	} else if (this.mode == 'multiSelector') {
	this.valueArr = this.defaultSelector;
	this.multiSelectorValue = this.defaultSelector;
	}
	this.$forceUpdate();
	},
	// 设置picker的某一列值
	setYears() {
	// 获取年份集合
	this.years = this.generateArray(this.startYear, this.endYear);
	// 设置this.valueArr某一项的值，是为了让picker预选中某一个值
	this.valueArr.splice(this.valueArr.length - 1, 1, this.getIndex(this.years, this.year));
	},
	setMonths() {
	this.months = this.generateArray(1, 12);
	this.valueArr.splice(this.valueArr.length - 1, 1, this.getIndex(this.months, this.month));
	},
	setDays() {
	let totalDays = new Date(this.year, this.month, 0).getDate();
	this.days = this.generateArray(1, totalDays);
	let index = 0;
	// 这里不能使用类似setMonths()中的this.valueArr.splice(this.valueArr.length - 1, xxx)做法
	// 因为this.month和this.year变化时，会触发watch中的this.setDays()，导致this.valueArr.length计算有误
	if (this.params.year && this.params.month) index = 2;
	else if (this.params.month) index = 1;
	else if (this.params.year) index = 1;
	else index = 0;
	// 当月份变化时，会导致日期的天数也会变化，如果原来选的天数大于变化后的天数，则重置为变化后的最大值
	// 比如原来选中3月31日，调整为2月后，日期变为最大29，这时如果day值继续为31显然不合理，于是将其置为29(picker-column从1开始)
	if(this.day > this.days.length) this.day = this.days.length;
	this.valueArr.splice(index, 1, this.getIndex(this.days, this.day));
	},
	setHours() {
	this.hours = this.generateArray(0, 23);
	this.valueArr.splice(this.valueArr.length - 1, 1, this.getIndex(this.hours, this.hour));
	},
	setMinutes() {
	this.minutes = this.generateArray(0, 59);
	this.valueArr.splice(this.valueArr.length - 1, 1, this.getIndex(this.minutes, this.minute));
	},
	setSeconds() {
	this.seconds = this.generateArray(0, 59);
	this.valueArr.splice(this.valueArr.length - 1, 1, this.getIndex(this.seconds, this.second));
	},
	setProvinces() {
	// 判断是否需要province参数
	if (!this.params.province) return;
	let tmp = '';
	let useCode = false;
	// 如果同时配置了defaultRegion和areaCode，优先使用areaCode参数
	if (this.areaCode.length) {
	tmp = this.areaCode[0];
	useCode = true;
	} else if (this.defaultRegion.length) tmp = this.defaultRegion[0];
	else tmp = 0;
	// 历遍省份数组匹配
	provinces.map((v, k) => {
	if (useCode ? v.value == tmp : v.label == tmp) {
	tmp = k;
	}
	});
	this.province = tmp;
	this.provinces = provinces;
	// 设置默认省份的值
	this.valueArr.splice(0, 1, this.province);
	},
	setCitys() {
	if (!this.params.city) return;
	let tmp = '';
	let useCode = false;
	if (this.areaCode.length) {
	tmp = this.areaCode[1];
	useCode = true;
	} else if (this.defaultRegion.length) tmp = this.defaultRegion[1];
	else tmp = 0;
	citys[this.province].map((v, k) => {
	if (useCode ? v.value == tmp : v.label == tmp) {
	tmp = k;
	}
	});
	this.city = tmp;
	this.citys = citys[this.province];
	this.valueArr.splice(1, 1, this.city);
	},
	setAreas() {
	if (!this.params.area) return;
	let tmp = '';
	let useCode = false;
	if (this.areaCode.length) {
	tmp = this.areaCode[2];
	useCode = true;
	} else if (this.defaultRegion.length) tmp = this.defaultRegion[2];
	else tmp = 0;
	areas[this.province][this.city].map((v, k) => {
	if (useCode ? v.value == tmp : v.label == tmp) {
	tmp = k;
	}
	});
	this.area = tmp;
	this.areas = areas[this.province][this.city];
	this.valueArr.splice(2, 1, this.area);
	},
	close() {
	this.$emit('input', false);
	},
	// 用户更改picker的列选项
	change(e) {
	this.valueArr = e.detail.value;
	let i = 0;
	if (this.mode == 'time') {
	// 这里使用i++，是因为this.valueArr数组的长度是不确定长度的，它根据this.params的值来配置长度
	// 进入if规则，i会加1，保证了能获取准确的值
	if (this.params.year) this.year = this.years[this.valueArr[i++]];
	if (this.params.month) this.month = this.months[this.valueArr[i++]];
	if (this.params.day) this.day = this.days[this.valueArr[i++]];
	if (this.params.hour) this.hour = this.hours[this.valueArr[i++]];
	if (this.params.minute) this.minute = this.minutes[this.valueArr[i++]];
	if (this.params.second) this.second = this.seconds[this.valueArr[i++]];
	} else if (this.mode == 'region') {
	if (this.params.province) this.province = this.valueArr[i++];
	if (this.params.city) this.city = this.valueArr[i++];
	if (this.params.area) this.area = this.valueArr[i++];
	} else if (this.mode == 'multiSelector') {
	let index = null;
	// 对比前后两个数组，寻找变更的是哪一列，如果某一个元素不同，即可判定该列发生了变化
	this.defaultSelector.map((val, idx) => {
	if (val != e.detail.value[idx]) index = idx;
	});
	// 为了让用户对多列变化时，对动态设置其他列的变更
	if (index != null) {
	this.$emit('columnchange', {
	column: index,
	index: e.detail.value[index]
	});
	}
	}
	},
	// 用户点击确定按钮
	getResult(event = null) {
	// #ifdef MP-WEIXIN
	if (this.moving) return;
	// #endif
	let result = {};
	// 只返回用户在this.params中配置了为true的字段
	if (this.mode == 'time') {
	if (this.params.year) result.year = this.formatNumber(this.year \|\| 0);
	if (this.params.month) result.month = this.formatNumber(this.month \|\| 0);
	if (this.params.day) result.day = this.formatNumber(this.day \|\| 0);
	if (this.params.hour) result.hour = this.formatNumber(this.hour \|\| 0);
	if (this.params.minute) result.minute = this.formatNumber(this.minute \|\| 0);
	if (this.params.second) result.second = this.formatNumber(this.second \|\| 0);
	if (this.params.timestamp) result.timestamp = this.getTimestamp();
	} else if (this.mode == 'region') {
	if (this.params.province) result.province = provinces[this.province];
	if (this.params.city) result.city = citys[this.province][this.city];
	if (this.params.area) result.area = areas[this.province][this.city][this.area];
	} else if (this.mode == 'selector') {
	result = this.valueArr;
	} else if (this.mode == 'multiSelector') {
	result = this.valueArr;
	}
	if (event) this.$emit(event, result);
	this.close();
	},
	// 获取时间戳
	getTimestamp() {
	// yyyy-mm-dd为安卓写法，不支持iOS，需要使用"/"分隔，才能二者兼容
	let time = this.year + '/' + this.month + '/' + this.day + ' ' + this.hour + ':' + this.minute + ':' + this.second;
	return new Date(time).getTime() / 1000;
	}
	}
	};
	</script>

	<style lang="scss" scoped>
	@import '../../libs/css/style.components.scss';

	.u-datetime-picker {
	position: relative;
	z-index: 999;
	}

	.u-picker-view {
	height: 100%;
	box-sizing: border-box;
	}

	.u-picker-header {
	width: 100%;
	height: 90rpx;
	padding: 0 40rpx;
	@include vue-flex;
	justify-content: space-between;
	align-items: center;
	box-sizing: border-box;
	font-size: 30rpx;
	background: #fff;
	position: relative;
	}

	.u-picker-header::after {
	content: '';
	position: absolute;
	border-bottom: 1rpx solid #eaeef1;
	-webkit-transform: scaleY(0.5);
	transform: scaleY(0.5);
	bottom: 0;
	right: 0;
	left: 0;
	}

	.u-picker__title {
	color: $u-content-color;
	}

	.u-picker-body {
	width: 100%;
	height: 500rpx;
	overflow: hidden;
	background-color: #fff;
	}

	.u-column-item {
	@include vue-flex;
	align-items: center;
	justify-content: center;
	font-size: 32rpx;
	color: $u-main-color;
	padding: 0 8rpx;
	}

	.u-text {
	font-size: 24rpx;
	padding-left: 8rpx;
	}

	.u-btn-picker {
	padding: 16rpx;
	box-sizing: border-box;
	text-align: center;
	text-decoration: none;
	}

	.u-opacity {
	opacity: 0.5;
	}

	.u-btn-picker--primary {
	color: $u-type-primary;
	}

	.u-btn-picker--tips {
	color: $u-tips-color;
	}
	</style>