[英]Custom Back Button for Navigation Bar
I made a category of UINavigationBar
as follow: 我做了一个UINavigationBar
的类别,如下所示:
UINavigationBar (UINavBar_Category)
I want to create custom back button using this. 我想使用此创建自定义后退按钮。
I can able to set image by following code: 我可以通过以下代码设置图像:
[[UIBarButtonItem appearance] setBackButtonBackgroundImage:[UIImage imageNamed:@"btn_back.png"] forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];
Problem can not able to change title of back button. 问题无法更改后退按钮的标题。
My try 我的尝试
- (void)didMoveToSuperview
{
UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:lang(@"btnBack") style:UIBarButtonItemStylePlain target:nil action:nil];
self.topItem.backBarButtonItem=backButton;
}
Help me to solve this! 帮我解决这个问题!
Thanks in advance 提前致谢
Try this code instead.. Here a button is first created , its title and image is set and then it is set as left bar button item of navigation controller. 请尝试使用此代码。.在此首先创建一个按钮,设置其标题和图像,然后将其设置为导航控制器的左栏按钮项。
UIButton *backBarButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 100, 29)];
[backBarButton setTitle:@" Log Out" forState:UIControlStateNormal];
[backBarButton setImage:[UIImage
imageNamed:@"leftarrow_ipad.png"] forState:UIControlStateNormal];
[backBarButton addTarget:self action:@selector(backAction:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *backBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:backBarButton];
self.navigationItem.leftBarButtonItem = backBarButtonItem;
Try this 尝试这个
-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
if([self.navigationController.viewControllers objectAtIndex:0] != self)
{
UIButton *backButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 30, 26)];
[backButton setImage:[UIImage imageNamed:@"back.png"] forState:UIControlStateNormal]; // some image
[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;
}
}
-(void)popViewControllerWithAnimation
{
[self.navigationController popViewControllerAnimated:YES];
}
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