pref: handle clear setTimeout function

pages/permissions/permissions.js

@@ -47,9 +47,12 @@ Page({
           showCancel: false,
           success (scanres) {
             if (scanres.confirm) {
-              that.setData({
-                scanFlag: true
-              })
+              var stimer = setTimeout(() => {
+                that.setData({
+                  scanFlag: true
+                })
+                clearTimeout(stimer)
+              }, 400);
             }
           } 
         })
@@ -104,10 +107,11 @@ Page({
         confirmText: '重新扫描',
         success (res) {
           if (res.confirm) {
-            setTimeout(() => {
+            var timer = setTimeout(() => {
               that.setData({
                 scanFlag: true
               })
+              clearTimeout(timer)
             }, 400);
           }
         }

pages/workbench/workbench.js

@@ -148,10 +148,11 @@ Page({
         confirmText: '重新扫描',
         success (res) {
           if (res.confirm) {
-            setTimeout(() => {
+            var timer = setTimeout(() => {
               that.setData({
                 scanFlag: true
               })
+              clearTimeout(timer)
             }, 400);
           }
         }