数据选择下拉时清空旧数据

src/components/app-picker/app-picker.vue

@@ -341,6 +341,7 @@ export default class AppPicker extends Vue {
     public onSelectOpen(flag: boolean): void {
         this.open = flag;
         if (this.open) {
+            this.items = [];
             //设置下拉列表的最大宽度
             this.setDropdownWidth();
             this.onSearch(this.curvalue, null, true);