no message

src/mixins/index.js

@@ -77,8 +77,12 @@ window.backPage = function () {
   if (pages.length > 1) {
     navToPage({ delta: 1 }, 'navigateBack')
   } else {
-    var searchParams = window.location.search
-    navToPage({ url: `/pages/index/index${searchParams}` }, 'reLaunch')
+    if (window.location.indexOf('/packageHome/pages/codeActivity/activityExplain') > -1) {
+      window.history.back()
+    } else {
+      var searchParams = window.location.search
+      navToPage({ url: `/pages/index/index${searchParams}` }, 'reLaunch')
+    }
   }
 }