ios - 无法自定义pushViewController的后退按钮

Question

我有一个ViewController可以通过以下方式打开另一个ViewController

[self.navigationController pushViewController:detailViewController animated:YES];

现在，新的VC在navBar中有一个后退按钮，但是我无法为它提供与第一个ViewController中的navBar按钮相同的背景图像。我尝试过:

UIImage *buttonImage = [UIImage imageNamed: @"Button.png"];
[self.navigationItem.backBarButtonItem setBackButtonBackgroundImage:buttonImage forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];
[self.navigationItem.backBarButtonItem setTitle:@"doesnt work either"];

但这是行不通的。我究竟做错了什么？谢谢!

Answer 1

试试下面的代码片段，对我来说很好:

UIBarButtonItem *barBtnItem = [[UIBarButtonItem alloc]initWithTitle:@"Back" style:UIBarButtonItemStyleBordered target:self action:@selector(pop)];

self.navigationItem.backBarButtonItem = barBtnItem;

或者，您也可以这样做:

   UIButton *backButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 26, 26)];
   [backButton setImage:[UIImage imageNamed:@"back"] forState:UIControlStateNormal];
   [backButton setShowsTouchWhenHighlighted:TRUE];
   [backButton addTarget:self action:@selector(popViewControllerWithAnimation) forControlEvents:UIControlEventTouchDown];
   UIBarButtonItem *barBackItem = [[UIBarButtonItem alloc] initWithCustomView:backButton];
   self.navigationItem.hidesBackButton = TRUE;
   self.navigationItem.leftBarButtonItem = barBackItem;

享受编码:)