[转]iOS开发的一些奇巧淫技1.2.3

1&2.http://www.cocoachina.com/ios/20141231/10783.html

3.http://www.cocoachina.com/ios/20150210/11130.html

 

tableViewCell的黑色分隔线左对齐

 self.tabView.separatorInset = UIEdgeInsetsMake(1, 0, 1, 0);

 

 

 xcode快捷键

command+alt+shift + 左/右 收起所有方法/展开所有方法

 

 

导航栏设置leftBarButtonItem之后,左滑返回手势失效 这时需要设置UIGestureRecognizerDelegate

self.navigationController.interactivePopGestureRecognizer.delegate = self;

 

 

获取字符串中的数字

NSCharacterSet *nonDigits =[[NSCharacterSet decimalDigitCharacterSet] invertedSet];
NSString *remainSecond =[@"0.0分钟" stringByTrimmingCharactersInSet:nonDigits];
NSLog(@" num %@ ",remainSecond);