避免两次点击

1.UIButton在iOS8以上可以避免

// 避免同一界面多个按钮同时被点击

if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0f) {

[[UIButton appearance] setExclusiveTouch:YES];

}

加在didFinishLaunchingWithOptions 里可以避免多个按钮被同时点击

支持iOS8 以上  需要的可以加一下

2.防止navigation多次push一个页面

http://blog.csdn.net/lizhilin_vip/article/details/51780691

给naviviewcontroller加上- (void)pushViewController:(UIViewController*)viewControlleranimated:(BOOL)animated {

if(self.pushing==YES) {

NSLog(@"被拦截");

return;

}else{

NSLog(@"push");

self.pushing=YES;

}

[superpushViewController:viewControlleranimated:animated];

}

3.防止button被点击多次

http://www.jianshu.com/p/7bca987976bd