解决退出登录崩溃

AIIM/AppDelegate.m

@@ -394,6 +394,9 @@
 
 - (void)updateTabBarBadgeValueAtIndex:(NSInteger)index badgeCount:(NSInteger)badgeCount {
     UITabBarController * tabbarVc = (UITabBarController *)self.window.rootViewController;
+    if (![tabbarVc isKindOfClass:[UITabBarController class]]) {
+        return;
+    }
     if(index < 0 || index >= tabbarVc.tabBar.items.count){
         return;
     }