如何处理uni-app中switch 点击事件不成立时:checked值不变

<view style="float: right;" v-if="this.isshowGuar">
                                <switch style="float: right;transform:scale(0.8);" color="#722ED1" :checked="guarFlag" @change="changeGuar" />
                            </view>

先在switch外面添加一个边框

    
                        this.$set(this,"isshowGuar",false)//边框view消失
                        this.$set(this,"guarFlag",true)
                        this.$nextTick(()=>{
                            setTimeout(()=>{
                                this.$set(this,"isshowGuar",true)//边框view重新出现
                                this.$forceUpdate()//强制执行
                            },1)
                        })