[IOS]通過category來控制UIViewController的Navigation样式

[IOS]通過category來控制UIViewController的Navigation样式

新建Category类,拓展UIViewController:

例如想调navigation bar的回退键样式,那么在.m中:

@implementation UIViewController (BackNavigationBar)-(void)awakeFromNib{ [super awakeFromNib]; self.navigationItem.leftBarButtonItem = [self backButton]; NSLog(@"test test:%f",self.navigationItem.leftBarButtonItem.customView.frame.origin.x);}- (UIBarButtonItem *)backButton{ UIBarButtonItem * item = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"ic_back" ] style:UIBarButtonItemStylePlain target:self action:@selector(backButtonPressed)]; return item;}-(void)backButtonPressed{ [self.navigationController popViewControllerAnimated:YES]; }@end

所有的UIViewController会自动继承了这些更改

版权声明：本文内容由网络用户投稿，版权归原作者所有，本站不拥有其著作权，亦不承担相应法律责任。如果您发现本站中有涉嫌抄袭或描述失实的内容，请联系我们jiasou666@gmail.com 处理，核实后本网站将在24小时内删除侵权内容。