iPhone开发--返回UINavigationController的根视图

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];}