更新大理市民卡app
diff --git a/uview-ui/components/u-dropdown-item/u-dropdown-item.vue b/uview-ui/components/u-dropdown-item/u-dropdown-item.vue
new file mode 100644
index 0000000..ba60d8f
--- /dev/null
+++ b/uview-ui/components/u-dropdown-item/u-dropdown-item.vue
@@ -0,0 +1,132 @@
+<template>
+	<view class="u-dropdown-item" v-if="active" @touchmove.stop.prevent="() => {}" @tap.stop.prevent="() => {}">
+		<block v-if="!$slots.default && !$slots.$default">
+			<scroll-view scroll-y="true" :style="{
+				height: $u.addUnit(height)
+			}">
+				<view class="u-dropdown-item__options">
+					<u-cell-group>
+						<u-cell-item @click="cellClick(item.value)" :arrow="false" :title="item.label" v-for="(item, index) in options"
+						 :key="index" :title-style="{
+							color: value == item.value ? activeColor : inactiveColor
+						}">
+							<u-icon v-if="value == item.value" name="checkbox-mark" :color="activeColor" size="32"></u-icon>
+						</u-cell-item>
+					</u-cell-group>
+				</view>
+			</scroll-view>
+		</block>
+		<slot v-else />
+	</view>
+</template>
+
+<script>
+	/**
+	 * dropdown-item 下拉菜单
+	 * @description 该组件一般用于向下展开菜单,同时可切换多个选项卡的场景
+	 * @tutorial http://uviewui.com/components/dropdown.html
+	 * @property {String | Number} v-model 双向绑定选项卡选择值
+	 * @property {String} title 菜单项标题
+	 * @property {Array[Object]} options 选项数据,如果传入了默认slot,此参数无效
+	 * @property {Boolean} disabled 是否禁用此选项卡(默认false)
+	 * @property {String | Number} duration 选项卡展开和收起的过渡时间,单位ms(默认300)
+	 * @property {String | Number} height 弹窗下拉内容的高度(内容超出将会滚动)(默认auto)
+	 * @example <u-dropdown-item title="标题"></u-dropdown-item>
+	 */
+	export default {
+		name: 'u-dropdown-item',
+		props: {
+			// 当前选中项的value值
+			value: {
+				type: [Number, String, Array],
+				default: ''
+			},
+			// 菜单项标题
+			title: {
+				type: [String, Number],
+				default: ''
+			},
+			// 选项数据,如果传入了默认slot,此参数无效
+			options: {
+				type: Array,
+				default () {
+					return []
+				}
+			},
+			// 是否禁用此菜单项
+			disabled: {
+				type: Boolean,
+				default: false
+			},
+			// 下拉弹窗的高度
+			height: {
+				type: [Number, String],
+				default: 'auto'
+			},
+		},
+		data() {
+			return {
+				active: false, // 当前项是否处于展开状态
+				activeColor: '#2979ff', // 激活时左边文字和右边对勾图标的颜色
+				inactiveColor: '#606266', // 未激活时左边文字和右边对勾图标的颜色
+			}
+		},
+		computed: {
+			// 监听props是否发生了变化,有些值需要传递给父组件u-dropdown,无法双向绑定
+			propsChange() {
+				return `${this.title}-${this.disabled}`;
+			}
+		},
+		watch: {
+			propsChange(n) {
+				// 当值变化时,通知父组件重新初始化,让父组件执行每个子组件的init()方法
+				// 将所有子组件数据重新整理一遍
+				if (this.parent) this.parent.init();
+			}
+		},
+		created() {
+			// 父组件的实例
+			this.parent = false;
+		},
+		methods: {
+			init() {
+				// 获取父组件u-dropdown
+				let parent = this.$u.$parent.call(this, 'u-dropdown');
+				if (parent) {
+					this.parent = parent;
+					// 将子组件的激活颜色配置为父组件设置的激活和未激活时的颜色
+					this.activeColor = parent.activeColor;
+					this.inactiveColor = parent.inactiveColor;
+					// 将本组件的this,放入到父组件的children数组中,让父组件可以操作本(子)组件的方法和属性
+					// push进去前,显判断是否已经存在了本实例,因为在子组件内部数据变化时,会通过父组件重新初始化子组件
+					let exist = parent.children.find(val => {
+						return this === val;
+					})
+					if (!exist) parent.children.push(this);
+					if (parent.children.length == 1) this.active = true;
+					// 父组件无法监听children的变化,故将子组件的title,传入父组件的menuList数组中
+					parent.menuList.push({
+						title: this.title,
+						disabled: this.disabled
+					});
+				}
+			},
+			// cell被点击
+			cellClick(value) {
+				// 修改通过v-model绑定的值
+				this.$emit('input', value);
+				// 通知父组件(u-dropdown)收起菜单
+				this.parent.close();
+				// 发出事件,抛出当前勾选项的value
+				this.$emit('change', value);
+			}
+		},
+		mounted() {
+			this.init();
+		}
+	}
+</script>
+
+<style scoped lang="scss">
+	@import "../../libs/css/style.components.scss";
+</style>