problem description

the canvas style in Mini Program swiper is out of order, and the computer is normal, but it makes a mistake when it is put on the mobile phone

wxml

<!-- pages/index/test.wxml -->
<view>
    <scroll-view scroll-x="true" class="tab-h" scroll-left="{{scrollLeft}}">
        <view class="tab-item {{currentTab==0?"active":""}}" data-current="0" bindtap="swichNav">
            
        </view>
        <view class="tab-item {{currentTab==1?"active":""}}" data-current="1" bindtap="swichNav">
            
        </view>
        <view class="tab-item {{currentTab==2?"active":""}}" data-current="2" bindtap="swichNav">
            
        </view>
        <view class="tab-item {{currentTab==3?"active":""}}" data-current="3" bindtap="swichNav">
            
        </view>
        <view class="tab-item {{currentTab==4?"active":""}}" data-current="4" bindtap="swichNav">
            
        </view>
        <view class="tab-item {{currentTab==5?"active":""}}" data-current="5" bindtap="swichNav">
            
        </view>
        <view class="tab-item {{currentTab==6?"active":""}}" data-current="6" bindtap="swichNav">
            
        </view>
        <view class="tab-item {{currentTab==7?"active":""}}" data-current="7" bindtap="swichNav">
            
        </view>
    </scroll-view>
    <swiper class="tab-content" current="{{currentTab}}" duration="300" bindchange="switchTab" style="height:{{winHeight}}rpx">
        <swiper-item wx:for="{{[0,1,2,3,4,5,6,7]}}" wx:key="*this">
            <!-- <scroll-view scroll-y="true" class="scoll-h" >
                <block wx:for="{{[1,2,3,4,5,6,7,8]}}" wx:key="*this">
                    <view class="item-ans">
                        <view class="avatar">
                            <image class="img" src="http://ookzqad11.bkt.clouddn.com/avatar.png"></image>
                        </view>
                        <view class="expertInfo">
                            <view class="name"></view>
                            <view class="tag"></view>
                            <view class="answerHistory">1342234 </view>
                        </view>
                        <navigator url="/pages/askExpert/expertDetail" class="askBtn">TA</navigator> 
                    </view>
                </block>
            </scroll-view> -->
            <view class="wrap">
                <view class="top">
                    <canvas class="cir" style="width:212px; height:212px;" canvas-id="canvasArc-{{item}}"></canvas>
                    <view class="cc"></view>
                </view>
            </view>
        </swiper-item>
    </swiper>
</view>

js

var app = getApp();
Page({
    data: {
        winHeight: "",//
        currentTab: 0, //
        scrollLeft: 0, //tab
        expertList: [{ //
            img: "avatar.png",
            name: "",
            tag: "",
            answer: 134,
            listen: 2234
        }]
    },
    // 
    switchTab: function (e) {
        this.setData({
            currentTab: e.detail.current
        });
        this.checkCor();

        function createCanvas(id) {
            // 
            var cxt_arc = wx.createCanvasContext("canvasArc-"+id);//context
            cxt_arc.setLineWidth(6);
            cxt_arc.setStrokeStyle("-sharpd2d2d2");
            cxt_arc.setLineCap("round")
            cxt_arc.beginPath();//
            cxt_arc.arc(106, 106, 100, 0, 2 * Math.PI, false);//(106,106)100
            cxt_arc.stroke();//

            cxt_arc.setLineWidth(6);
            cxt_arc.setStrokeStyle("-sharp3ea6ff");
            cxt_arc.setLineCap("round")
            cxt_arc.beginPath();//
            cxt_arc.arc(106, 106, 100, -Math.PI * 1 / 2, Math.PI * 6 / 5, false);
            cxt_arc.stroke();//

            cxt_arc.draw();
        }

        setTimeout(() => {
            createCanvas(e.detail.current)
        }, 2000);
        
    },
    // 
    swichNav: function (e) {
        var cur = e.target.dataset.current;
        if (this.data.currentTaB == cur) { return false; }
        else {
            this.setData({
                currentTab: cur
            })
        }
    },
    //tab
    checkCor: function () {
        if (this.data.currentTab > 4) {
            this.setData({
                scrollLeft: 300
            })
        } else {
            this.setData({
                scrollLeft: 0
            })
        }
    },
    onLoad: function () {
        var that = this;
        //  
        wx.getSystemInfo({
            success: function (res) {
                var clientHeight = res.windowHeight,
                    clientWidth = res.windowWidth,
                    rpxR = 750 / clientWidth;
                var calc = clientHeight * rpxR - 180;
                console.log(calc)
                that.setData({
                    winHeight: calc
                });
            }
        });
    },
    onReady: function () {
        [0,1,2,3,4,5,6,7].forEach(el => {
            // createCanvas(el);
        });

        function createCanvas(id) {
            // 
            var cxt_arc = wx.createCanvasContext("canvasArc-"+id);//context
            cxt_arc.setLineWidth(6);
            cxt_arc.setStrokeStyle("-sharpd2d2d2");
            cxt_arc.setLineCap("round")
            cxt_arc.beginPath();//
            cxt_arc.arc(106, 106, 100, 0, 2 * Math.PI, false);//(106,106)100
            cxt_arc.stroke();//

            cxt_arc.setLineWidth(6);
            cxt_arc.setStrokeStyle("-sharp3ea6ff");
            cxt_arc.setLineCap("round")
            cxt_arc.beginPath();//
            cxt_arc.arc(106, 106, 100, -Math.PI * 1 / 2, Math.PI * 6 / 5, false);
            cxt_arc.stroke();//

            cxt_arc.draw();
        }
        

    },
    footerTap: app.footerTap
})

wxss

/* pages/index/test.wxss */
.tab-h{
    height: 80rpx;width: 100%; box-sizing: border-box;overflow: hidden;line-height: 80rpx;background: -sharpF7F7F7; font-size: 16px; white-space: nowrap;position: fixed;top: 0; left: 0; z-index: 99;}
.tab-item{margin:0 36rpx;display: inline-block;}
.tab-item.active{color: -sharp4675F9;position: relative;}
.tab-item.active:after{ content: "";display: block;height: 8rpx;width: 52rpx;background: -sharp4675F9;position: absolute; bottom: 0;left: 5rpx;border-radius: 16rpx;}
.item-ans{ width: 100%;display: flex; flex-grow: row no-wrap;justify-content: space-between; padding: 30rpx;box-sizing: border-box; height: 180rpx;align-items: center;border-bottom: 1px solid -sharpF2F2F2;}
.avatar{width: 100rpx;height: 100rpx;position: relative;padding-right: 30rpx;}
.avatar .img{width: 100%;height: 100%;}
.avatar .doyen{width: 40rpx;height: 40rpx;position: absolute;bottom: -2px;right: 20rpx;}
.expertInfo{font-size: 12px;flex-grow: 2;color: -sharpB0B0B0;line-height: 1.5em;}
.expertInfo .name{font-size: 16px;color:-sharp000;margin-bottom: 6px;}
.askBtn{ width: 120rpx;height: 60rpx;line-height: 60rpx;text-align: center;font-size: 14px; border-radius: 60rpx;border: 1px solid -sharp4675F9; color:-sharp4675F9;}
.tab-content{margin-top: 80rpx;}
.scoll-h{height: 100%;}



.cir{
    display: inline-block;
    margin-top: 20rpx;
   
  }
   
  .top{
    text-align: center
  }
   
  .cc{
    
    margin-top: -120px;
    
  }

ask for help to run and see how to solve ~