iPhone开发--返回UINavigationController的根视图

最新推荐文章于 2021-09-04 10:02:36 发布

最新推荐文章于 2021-09-04 10:02:36 发布 · 185 阅读

本文介绍如何在iOS应用中自定义UINavigationBar的左侧返回按钮，并实现点击返回根视图控制器的功能。

首先自定义UINavigationBar的左侧返回按钮

UIButton * backBtn = [[UIButton alloc] initWithFrame:CGRectMake(0, 0,71.5, 44)]; // UIButton * backBtn = [[UIButton alloc] initWithFrame:CGRectMake(0, 0,200, 44)]; [backBtn setImage:[UIImage imageNamed:@"bt_fanhui.png"] forState:UIControlStateNormal] ; [backBtn setImage:[UIImage imageNamed:@"bt_fanhui_over.png"] forState:UIControlStateHighlighted] ; // backBtn.backgroundColor = [UIColor redColor]; [backBtn addTarget:self action:@selector(backButtonClick:) forControlEvents:UIControlEventTouchUpInside] ; [backBtn setShowsTouchWhenHighlighted:YES] ; UIBarButtonItem *backbutton = [[UIBarButtonItem alloc]initWithCustomView:backBtn]; self.navigationItem.leftBarButtonItem = backbutton; [backBtn release] ;

编写点击返回按钮所触发的函数

- (void)backButtonClick:(id)sender { [self.navigationController popToRootViewControllerAnimated:YES]; }