fix: 修复登录环境选择器选中框错位

src/components/u-select/u-select.vue

@@ -46,20 +46,27 @@
 					></u-icon>
 				</view>
 				<view v-if="loading" class="u-select__loading">搜索中...</view>
-				<view class="u-select__body">
+				<view class="u-select__body" :style="hasCustomItemHeight ? bodyStyle : null">
 					<view v-if="isColumnEmpty && !loading" class="u-select__empty">无匹配选项</view>
 					<picker-view
 						v-else-if="value && !isColumnEmpty"
 						:key="pickerKey"
 						@change="columnChange"
 						class="u-select__body__picker-view"
+						:style="pickerViewStyle"
+						:indicator-style="indicatorStyle"
 						:value="defaultSelector"
 						@pickstart="pickstart"
 						@pickend="pickend"
 					>
 						<picker-view-column v-for="(item, index) in columnData" :key="'col-' + pickerKey + '-' + index">
-							<view class="u-select__body__picker-view__item" v-for="(item1, index1) in item" :key="item1[valueName] != null ? item1[valueName] : index1">
-								<view class="u-line-1">{{ item1[labelName] }}</view>
+							<view
+								class="u-select__body__picker-view__item"
+								:style="hasCustomItemHeight ? itemStyle : null"
+								v-for="(item1, index1) in item"
+								:key="item1[valueName] != null ? item1[valueName] : index1"
+							>
+								<view class="u-line-1" :style="hasCustomItemHeight ? itemStyle : null">{{ item1[labelName] }}</view>
 							</view>
 						</picker-view-column>
 					</picker-view>
@@ -172,6 +179,16 @@ export default {
 		debounce: {
 			type: Number,
 			default: 400
+		},
+		/** 选项行高（rpx）。App 端需与 indicator 同步，避免选中框错位 */
+		itemHeight: {
+			type: [Number, String],
+			default: 0
+		},
+		/** 可见行数，用于计算滚轮高度；需为奇数，选中行才能居中 */
+		visibleItemCount: {
+			type: [Number, String],
+			default: 5
 		}
 	},
 	data() {
@@ -225,7 +242,37 @@ export default {
 		},
 		isColumnEmpty() {
 			return !this.columnData || !this.columnData.length || !this.columnData[0] || !this.columnData[0].length;
-		}
+		},
+		hasCustomItemHeight() {
+			return Number(this.itemHeight) > 0;
+		},
+		itemHeightRpx() {
+			return Number(this.itemHeight) || 70;
+		},
+		itemHeightPx() {
+			return uni.upx2px(this.itemHeightRpx);
+		},
+		visibleCount() {
+			const n = Number(this.visibleItemCount) || 5;
+			return n % 2 === 0 ? n + 1 : n;
+		},
+		indicatorStyle() {
+			if (!this.hasCustomItemHeight) return '';
+			return `height: ${this.itemHeightPx}px;`;
+		},
+		itemStyle() {
+			return {
+				height: `${this.itemHeightPx}px`,
+				lineHeight: `${this.itemHeightPx}px`,
+			};
+		},
+		pickerViewStyle() {
+			if (!this.hasCustomItemHeight) return null;
+			return { height: `${this.itemHeightPx * this.visibleCount}px` };
+		},
+		bodyStyle() {
+			return this.pickerViewStyle;
+		},
 	},
 	methods: {
 		pickstart() {

src/pages/sys/login/index.vue

@@ -105,7 +105,8 @@
 		<!--			</view>-->
 		<!--		</div>-->
 		<u-select class="login-env-picker" v-model="showApiUrlPicker" :list="apiUrlList" :default-value="apiUrlDefaultIndex"
-			title="选择服务器" @confirm="onApiUrlConfirm" @cancel="showApiUrlPicker = false"></u-select>
+			title="选择服务器" :show-search="false" :item-height="88" :visible-item-count="5"
+			@confirm="onApiUrlConfirm" @cancel="showApiUrlPicker = false"></u-select>
 		<!-- 版本信息显示 -->
 		<view class="version-info">
 			<text class="version-text">版本: {{ appVersion }}</text>
@@ -607,15 +608,13 @@ export default {
 		font-size: 36rpx;
 	}
 
-	::v-deep .u-select__body {
-		height: 560rpx;
+	::v-deep .u-select__header__title {
+		font-size: 36rpx;
 	}
 
 	::v-deep .u-select__body__picker-view__item,
 	::v-deep .u-line-1 {
-		height: 88rpx;
 		font-size: 40rpx;
-		line-height: 88rpx;
 	}
 }
 </style>