ios 如何在导航栏中创建后退按钮
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how to create back button in navigation bar
提问by janatan
I have 2 page. first is tableView and second is view when I to click on any cell go on to next page (view) in way modal segue. I want add back button in next page of navigation bar . this is my code in view page : ViewController.m
我有 2 页。第一个是tableView，第二个是当我点击任何单元格以模式segue方式进入下一页（视图）时的视图。我想在导航栏的下一页添加后退按钮。这是我在视图页面中的代码： ViewController.m
- (void)viewDidLoad
{
[super viewDidLoad];
self.lable.text = obji.Name;
self.lable2.text = obji.Descript;
UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:@"Back" style:UIBarButtonItemStyleBordered target:self action:@selector(Back)];
self.navigationItem.leftBarButtonItem = backButton;
}
- (IBAction)Back
{
//I dont know that how return pervious page
}
回答by Lochana Ragupathy
As you said in your comment you use a modal controller
正如您在评论中所说，您使用模态控制器
Add the following in viewWillappear
在viewWillappear 中添加以下内容
UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:@"Back" style: UIBarButtonItemStyleBordered target:self action:@selector(Back)];
self.navigationItem.leftBarButtonItem = backButton;
And in
而在
- (IBAction)Back
{
[self dismissViewControllerAnimated:YES completion:nil]; // ios 6
}
回答by Shoaib Bagwan
Swift 3
斯威夫特 3
let backButton: UIBarButtonItem = UIBarButtonItem(title: "Back", style: .plain, target: self, action: #selector(back))
self.navigationItem.leftBarButtonItem = backButton
func back() {
self.dismiss(animated: true, completion: nil) }
回答by Evdzhan Mustafa
I had similar issue, but I am using Swift. Here is the answer in Swift 2.2.
我有类似的问题，但我使用的是 Swift。这是 Swift 2.2 中的答案。
override func viewWillAppear(animated: Bool) {
let backButton: UIBarButtonItem = UIBarButtonItem(title: "Back", style: .Plain, target: self, action: #selector(back))
self.navigationItem.leftBarButtonItem = backButton;
super.viewWillAppear(animated);
}
func back() {
self.dismissViewControllerAnimated(true, completion: nil)
}
