[IOS]防止多次push一個頁面
阿新 • • 發佈：2019-01-08
一個按鈕push到另外一個頁面 ，有時會出現push兩次重複頁面的效果 。
解決方式如下：
這裡遵守協議 定義一個push的bool值來判斷是否正在push。
@interfaceStartViewController ()<UIScrollViewDelegate,UINavigationControllerDelegate>
@property (nonatomic,getter=isPushing)BOOL pushing;
- (void)pushViewController:(UIViewController *)viewController animated:( BOOL)animated
{
if (self.pushing ==YES) {
NSLog(@"被攔截");
return;
}else {
NSLog(@"push");
self.pushing =YES;
}
[self.navigationControllerpushViewController:viewControlleranimated:animated];
}
#pragma mark - UINavigationControllerDelegate
-(void)navigationController:(UINavigationController *)navigationController didShowViewController:(UIViewController
*)viewController animated:(BOOL)animated {
self.pushing =NO;
}