以编程方式将按钮添加到导航栏
以编程方式将按钮添加到导航栏
提问于 2010-05-17 17:55:31
您好，我需要设置右侧的按钮，在导航栏，编程，以便如果我按下按钮，我将执行一些行动。我已经通过编程创建了导航栏；
navBar=[[UINavigationBar alloc]initWithFrame:CGRectMake(0,0,320,44) ];类似地，我需要在这个导航栏的右侧添加按钮。为此我使用了，
1.
UIView* container = [[UIView alloc] init];
// create a button and add it to the container
UIButton* button = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 130, 44.01)];
[container addSubview:button];
[button release];
// add another button
button = [[UIButton alloc] initWithFrame:CGRectMake(160, 0, 50, 44.01)];
[container addSubview:button];
[button release];
// now create a Bar button item
UIBarButtonItem* item = [[UIBarButtonItem alloc] initWithCustomView:container];
// set the nav bar's right button item
self.navigationItem.rightBarButtonItem = item;
[item release];2.
UIImage *im;
im=[UIImage imageNamed:@"back.png"];
[button setImage:im forState:UIControlStateNormal];
[im release];
backButton = [[UIBarButtonItem alloc] initWithCustomView:button];
[backButton setImageInsets:UIEdgeInsetsMake(0, -10,5, 5)];
[self.navigationItem setRightBarButtonItem:backButton];3.
UIBarButtonItem *refreshItem = [[UIBarButtonItem alloc] initWithTitle:@"button" style:UIBarButtonItemStylePlain target:self action:@selector(refreshLogsAction:)];
self.navigationItem.rightBarButtonItem = refreshItem;
[refreshItem release];我尝试了所有这些方法，但没有一种方法在右侧显示按钮。
回答 12
Stack Overflow用户
回答已采纳
发布于 2010-07-17 03:49:15
在我的UIViewController派生类中，我在viewDidLoad中使用了以下内容
UIBarButtonItem *flipButton = [[UIBarButtonItem alloc]
initWithTitle:@"Flip"
style:UIBarButtonItemStyleBordered
target:self
action:@selector(flipView:)];
self.navigationItem.rightBarButtonItem = flipButton;
[flipButton release];这将在右侧添加一个标题为Flip的按钮，该按钮将调用该方法：
-(IBAction)flipView
这看起来非常像你#3，但它在我的代码中工作。
Stack Overflow用户
发布于 2014-07-17 17:34:32
UIImage* image3 = [UIImage imageNamed:@"back_button.png"];
CGRect frameimg = CGRectMake(15,5, 25,25);
UIButton *someButton = [[UIButton alloc] initWithFrame:frameimg];
[someButton setBackgroundImage:image3 forState:UIControlStateNormal];
[someButton addTarget:self action:@selector(Back_btn:)
forControlEvents:UIControlEventTouchUpInside];
[someButton setShowsTouchWhenHighlighted:YES];
UIBarButtonItem *mailbutton =[[UIBarButtonItem alloc] initWithCustomView:someButton];
self.navigationItem.leftBarButtonItem =mailbutton;
[someButton release];/调用的事件
-(IBAction)Back_btn:(id)sender
{
//Your code here
}SWIFT：
var image3 = UIImage(named: "back_button.png")
var frameimg = CGRect(x: 15, y: 5, width: 25, height: 25)
var someButton = UIButton(frame: frameimg)
someButton.setBackgroundImage(image3, for: .normal)
someButton.addTarget(self, action: Selector("Back_btn:"), for: .touchUpInside)
someButton.showsTouchWhenHighlighted = true
var mailbutton = UIBarButtonItem(customView: someButton)
navigationItem?.leftBarButtonItem = mailbutton
func back_btn(_ sender: Any) {
//Your code here
}Stack Overflow用户
发布于 2015-02-24 20:44:11
要在导航栏上添加搜索按钮，请使用以下代码：
UIBarButtonItem *searchButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemSearch target:self action:@selector(toggleSearch:)];
self.navigationController.navigationBar.topItem.rightBarButtonItem = searchButton;并实现以下方法：
- (IBAction)toggleSearch:(id)sender
{
// do something or handle Search Button Action.
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/2848055
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