vue中uni-app中添加了u-modal为啥不起作用，控制台也没有报错？

添加了如下代码，也没没有任何效果，控制台也不报错

      <view >
        <u-modal :show="true" v-show="true" :title="title" :content='content'></u-modal>
      </view>

代码如下

<template>
  <view class="page-raw-receipt">
    <!-- 头部 -->
    <view class="header" :style="{ backgroundColor: `rgba(23, 83, 234, ${scrollTop / 100})` }">
      <view class="left">
        <u-icon class="icon" name="arrow-left" @click="uni.navigateBack({})" />
      </view>
      <view class="title">{{ $t('message.stoOutbound') }}</view>
      <view class="right"></view>
    </view>
    <view class="content">
      <!-- STO单号 -->
      <view class="single">
        <view class="single-left">
          <view>{{ $t('message.stoOrderNo') }}</view>
          <u-search :placeholder="$t('message.stoPleaseScan')" v-model.trim="stoNo" @search="query" :show-action="false"> </u-search>
        </view>
        <view class="single-right">
          <u-button type="primary" @click="query">{{ $t('message.Query') }}</u-button>
        </view>
      </view>
      <!-- STO行项目 -->
      <view class="Purchase-title">
        <view class="Purchase">
          <view>{{ $t('message.stoLine') }}</view>
          <jPicker sureColor="#ff0000" style="width: 260rpx" @bindpicker="SelectStoLine" showKey="value" valKey="value" :val="stoItem.value" class="search" :options="model.stoItemList" />
        </view>
      </view>
      <!-- 物料编码 -->
      <view class="material">
        <view class="material-right">
          <view class="material-right-title">{{ $t('message.matcode') }}</view>
          <view class="material-right-code" style="overflow: hidden">{{ TheItem.matCode }}</view>
        </view>
      </view>
      <!-- 物料描述 -->
      <view class="material">
        <view class="material-right">
          <view class="material-right-title">{{ $t('message.po_MaterielDes') }}</view>
          <view class="material-right-code" style="overflow: hidden">{{ TheItem.matDesc }}</view>
        </view>
      </view>
      <!-- 计划数量&&已出数量 -->
      <view class="number">
        <view class="number-left">
          <view class="number-left-title">{{ $t('message.reqQty') }}</view>
          <u-input v-model="TheItem.reqQty" placeholder=" " :type="item" :border="border" class="input" disabled style="padding: '0'" />
        </view>
        <view class="number-right">
          <view class="number-right-title">{{ $t('message.finQty') }}</view>
          <u-input v-model="TheItem.finQty" placeholder="" :type="type" :border="border" class="input" disabled style="padding: '0'" />
        </view>
      </view>
      <!-- 扫码 -->
      <u-form-item :labelWidth="140" :label="$t('message.product_BarCode')">
        <u-search :placeholder="$t('message.po_PleaseInput')" v-model="barcode" @search="onOk" :focus="firstFocus" :show-action="false"></u-search>
      </u-form-item>
      <!-- 车牌号 -->
       <view class="number" v-show="showVehicle">
        <view class="number-left">
          <view class="number-left-title">{{ $t('message.dn_CarNumber') }}</view>
          <u-input v-model="carNo" placeholder=" " :type="item" :border="border" class="input"  style="padding: '0'" />
        </view>
      </view>
      <!-- 车牌弹窗输入 -->
      <view >
        <u-modal :show="true" v-show="true" :title="title" :content='content'></u-modal>
      </view>


                

      <!-- 出库库位 -->
      <!-- <view class="material">
        <view class="material-right">
          <view class="material-right-title">{{ $t('message.DeliveryLoc') }}</view>
          <view class="material-right-code" style="overflow: hidden">{{ TheItem.locCode }}</view>
        </view>
      </view> -->
    </view>
    <!-- 底部按钮 -->
    <view class="bottom-bar">
      <u-row class="button-bar">
        <u-col :span="6">
          <u-button type="primary" @click="Confirm">{{ $t('message.confirm') }}</u-button>
        </u-col>
        <!-- <u-col :span="4">
          <u-button type="primary" @click="Submit">{{ $t('message.Posting') }}</u-button>
        </u-col> -->
        <u-col :span="6">
          <u-button type="error" @click="uni.navigateBack({})">{{ $t('message.po_Return') }}</u-button>
        </u-col>
      </u-row>
    </view>
  </view>
</template>
<script lang="ts">
import { Component } from 'vue-property-decorator';
import { BasePage } from '@/components/base/page';
import jPicker from '@/components/J-Picker/jPicker.vue';
import { session } from '@/store/modules/session';
import model from './model';
//import { Tabheaders } from './config';
@Component({
  components: {
    jPicker,
  },
})
export default class dnReceiptDom extends BasePage {
  border = true;
  type = 'text';
  item = 'text';
  //Tabheaders = Tabheaders;
  model = model;
  stoNo: any = '';
  barcode: any = '';
  firstFocus = false;
  stoNoList: any = [];
  stoItem: any = {};
  LocList: any = [];
  Loc: any = {};
  TheItem: any = '';
  ItemIndex: any = '';
  carNo:any = '';
  showVehicle = false;
  areaShow=true;
  areaTxt='';
  show= true;
            title='标题';
            content='uView的目标是成为uni-app生态最优秀的UI框架';
  cancelAdd(){
            this.areaShow = false
        };
        confirmAdd(){
            this.areaShow = false
                
        };

  async query() {
    this.carNo='';
    this.showVehicle = false;
    if (!this.stoNo) {
      this.customToast(this.$t('message.stoPleaseInput') as any);
      return;
    }
    await model.QuerySto(this.stoNo);
    this.stoNoList = this.model.stoNoList;
    this.stoItem = this.model.stoItemList[0];
    this.TheItem = this.model.stoNoList[0];
    this.ItemIndex = 0;
  }

  // TheItem: any = {};
  // ItemIndex: any = 0;
  async SelectStoLine(e: any) {
    this.stoItem = e.pickerName;
    this.model.stoNoList.forEach((item: any, index: any) => {
      if (item.stoItem == this.stoItem.value) {
        this.TheItem = item;
        this.ItemIndex = index;
      }
    });
  }
  //num: any = '';
  //SunmitList: any = [];
  async onOk() {
    this.carNo='';
    this.showVehicle = false;
    if (!this.stoNo) {
      this.customToast(this.$t('message.stoPleaseInput') as any);
      return;
    }
    if (!this.barcode) {
      this.customToast(this.$t('message.barcode_PleaseScan') as any);
      return;
    }
    const selctlist = {
      barcode: this.barcode,
      loginName: session.loginName,
      factoryCode: session.factoryCode,
      stoNo: this.stoNo,
      stoItem: this.stoItem.value,
      matCode: this.TheItem.materialCode,
    };
    await this.model.stoScan(selctlist);
    if (this.model.res.code == '1') {
      this.customToast(this.$t('message.Warehouse_Tip9') as any);
      //this.TheItem.scanAmount = this.TheItem.scanAmount + 1;
      this.model.stoNoList[this.ItemIndex].finQty += 1;
      this.barcode = '';
    }
  }
  //确认
  async Confirm() {

    
    if (!this.stoNo) {
      this.customToast(this.$t('message.stoPleaseInput') as any);
      return;
    }
    if (this.carNo=='') {
      this.customToast(this.$t('message.po_PleaseInputcar') as any);
      this.showVehicle = true;
      return;
    }
    const SunmitList = {
      loginName: session.loginName,
      factoryCode: session.factoryCode,
      stoNo: this.stoNo,
      carNo: this.carNo,
    };
    await this.model.ConfirmList(SunmitList);
    if (this.model.SubCode == 1) {
      uni.showToast({
        title: this.$t('message.success') as string,
        image: '/static/icons/icon-51.png',
      });
      this.empty();
    }
  }
  //过账
  async Submit() {
    if (!this.stoNo) {
      this.customToast(this.$t('message.stoPleaseInput') as any);
      return;
    }
    const SunmitList = {
      loginName: session.loginName,
      factoryCode: session.factoryCode,
      stoNo: this.stoNo,
    };
    await this.model.SubmitList(SunmitList);
    if (this.model.SubCode == 1) {
      uni.showToast({
        title: this.$t('message.success') as string,
        image: '/static/icons/icon-51.png',
      });
      this.empty();
    }
  }
  empty() {
    this.stoNo = '';
    // this.LocList = [];
    // this.Loc = {};
    this.TheItem = {};
    this.ItemIndex = 0;
    this.stoNoList = [];
    this.stoItem = {};
    this.barcode = '';
    this.carNo='';
    this.showVehicle = false;
    //this.SunmitList = [];
    this.model.stoNoList.length = 0;
  }
}
</script>
<style lang="scss" scoped>
.page-raw-receipt {
  background: #f2f2f2 linear-gradient(0deg, #f2f2f2 0%, #4a78ea 51%, #1753ea 100%) no-repeat;
  background-size: 100% 600rpx;
  padding: 118rpx 30rpx 162rpx;
  min-height: 100%;

  .header {
    position: fixed;
    top: 36rpx;
    left: 0;
    right: 0;
    z-index: 99;
    display: flex;
    height: 88rpx;
    line-height: 88rpx;
    color: #fff;
    font-size: 34rpx;
    font-weight: 500;
    text-align: center;

    .title {
      flex: 3;
    }

    .left,
    .right {
      flex: 1;
    }

    .icon {
      display: flex;
      justify-content: center;
      align-items: center;
      width: 88rpx;
      height: 88rpx;
    }
  }

  .content {
    width: 100%;
    background: white;
    border-radius: 15rpx;
    padding: 10rpx;

    .single {
      width: 100%;
      height: 100rpx;
      display: flex;

      .single-left {
        width: 79%;
        height: 100%;
        display: flex;

        view {
          width: 110rpx;
          height: 100%;
          line-height: 100rpx;
        }
      }

      .single-right {
        button {
          margin-top: 15rpx;
          width: 150rpx;
          height: 70rpx;
        }
      }
    }

    .Purchase-title {
      width: 100%;

      .Purchase {
        width: 60%;
        height: 100%;
        display: flex;

        view {
          width: 180rpx;
          line-height: 100rpx;
        }
      }
    }
    .u-form-item--left {
      width: 130rpx;
    }

    // .material {
    //   width: 100%;
    //   height: 100rpx;
    //   display: flex;
    //   .material-left {
    //     width: 100%;
    //     height: 100%;
    //     display: flex;
    //     view {
    //       width: 100rpx;
    //       line-height: 100rpx;
    //     }
    //   }
    // }
    .material {
      width: 100%;
      height: 100rpx;
      display: flex;

      .material-left {
        width: 100%;
        height: 100%;
        display: flex;

        view {
          width: 140rpx;
          line-height: 100rpx;
          text-align: left;
        }
      }

      .material-right {
        width: 100%;
        height: 100%;
        display: flex;

        .material-right-title {
          width: 180rpx;
          height: 100%;
          line-height: 100rpx;
        }

        .material-right-code {
          width: 80%;
          height: 100%;
          line-height: 100rpx;
          text-align: left;
          padding-left: 10px;
        }
      }
    }

    .number {
      height: 100rpx;
      display: flex;

      .number-left {
        width: 50%;
        height: 100%;
        display: flex;

        .number-left-title {
          width: 150rpx;
          height: 100%;
          line-height: 100rpx;
        }

        .input {
          width: 200rpx;
          height: 70rpx;
          margin-top: 15rpx;
          margin-left: 15rpx;
        }
      }

      .number-right {
        width: 50%;
        height: 100%;
        display: flex;

        .number-right-title {
          width: 150rpx;
          height: 100%;
          //text-align: center;
          line-height: 100rpx;
        }

        .input {
          width: 200rpx;
          height: 70rpx;
          margin-top: 15rpx;
          margin-left: 15rpx;
        }
      }
    }

    // .library {
    //   width: 100%;
    //   height: 100rpx;
    //   display: flex;
    //   .library-left {
    //     width: 50%;
    //     height: 100%;
    //     display: flex;
    //     view {
    //       width: 100rpx;
    //       line-height: 100rpx;
    //     }
    //     .search {
    //       padding-left: 20px;
    //     }
    //   }
    //   .library-right {
    //     width: 50%;
    //     height: 100%;
    //     display: flex;
    //     .library-right-title {
    //       width: 120rpx;
    //       height: 100%;
    //       padding-left: 4px;
    //       line-height: 100rpx;
    //     }
    //     .input {
    //       width: 200rpx;
    //       height: 70rpx;
    //       margin-top: 15rpx;
    //     }
    //   }
    // }
    .add {
      width: 100%;
      height: 100rpx;
      position: absolute;
      top: 351px;
      left: 0;

      button {
        position: absolute;
        top: 3rpx;
        right: 35rpx;
      }
    }

    .config {
      width: 100%;
      height: 100rpx;
      position: relative;
      display: flex;

      // top: 420px;
      // left: 0;
      button {
        position: absolute;
        // top: 455px;
        right: 1px;
      }

      .AddQty {
        width: 20px;
        height: 20px;
      }
    }
  }

  .bottom-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 99;
    background: #ffffff;
    box-shadow: 0 1rpx 20rpx 0 rgba(128, 128, 128, 0.2);
    padding: 20rpx;
  }
}
</style>