1.隐藏多余的tableView的cell分割线
self.tableView.tableFooterView= [[UIView alloc]init];2.取消系统自带的返回字样
[[UIBarButtonItem appearance]setBackButtonTitlePositionAdjustment:UIOffsetMake(0, -60) forBarMetrics:UIBarMetricsDefault];3.滑动时隐藏navigation
self.navigationController.hidesBarsOnSwipe=YES;4.页面跳转是隐藏tabBar
TwoViewController *twoVC = [[TwoViewController alloc] init];
twoVC.hidesBottomBarWhenPushed =YES;5.ScrollView不能滑到顶
self.automaticallyAdjustsScrollViewInsets=NO;6.按钮点击发光效果
button.showsTouchWhenHighlighted =YES;7.长按手势只执行一次
if（sender.state == UIGestureRecognizerState）8.隐藏状态栏
- (BOOL)prefersStatusBarHidden
{
returnYES;
}9.在使用view的缩放的时候，layer.border.width随着view的放大，会出现锯齿化的问题。
self.layer.allowsEdgeAntialiasing = YES;10、在自定义返回按钮的时候，侧滑手势返回往往默认失效了，怎么让侧滑有效呢 UIButton *btn =[UIButton buttonWithType:UIButtonTypeCustom];
[btn setTitle:@"返回" forState:UIControlStateNormal];
[btn addTarget:self action:@selector(back) forControlEvents:UIControlEventTouchUpInside];
btn.frame=CGRectMake(0, 0, 60, 40);
[btn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
UIBarButtonItem *item =[[UIBarButtonItem alloc]initWithCustomView:btn];
self.navigationItem.leftBarButtonItem=item;添加下面这一句代码即可
self.navigationController.interactivePopGestureRecognizer.delegate=(id)self;