wx.showToast的回调complete中去做，这样才安全并真正执行了，它异步     wx.showToast({       title: '场景值' + this.data.appLaunchScene,       duration: 5000,       complete: () => {         let idTimeout_showToastHideToast =          setTimeout(()=>{           wx.hideToast({noConflict:false});           if (idTimeout_showToastHideToast !==-1) {idTimeout_showToastHideToast = null;console.log('Yes');};         },5000);       },           });