如何在导航栏按钮项中添加自定义图像？

Question

UIBarButtonItem *doneitem=[[[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(donePressed:)]autorelease]; 
    self.navigationItem.rightBarButtonItem=doneitem; 

这是我的应用程序的代码，我需要在此按钮上添加图像？

请帮帮我。

Answer 1

试试这个代码：

UIImage* image3 = [UIImage imageNamed:@"mail-48_24.png"]; 
CGRect frameimg = CGRectMake(0, 0, image3.size.width, image3.size.height); 
UIButton *someButton = [[UIButton alloc] initWithFrame:frameimg]; 
[someButton setBackgroundImage:image3 forState:UIControlStateNormal]; 
[someButton addTarget:self action:@selector(sendmail) 
    forControlEvents:UIControlEventTouchUpInside]; 
[someButton setShowsTouchWhenHighlighted:YES]; 

UIBarButtonItem *mailbutton =[[UIBarButtonItem alloc] initWithCustomView:someButton]; 
self.navigationItem.rightBarButtonItem=mailbutton; 
[someButton release]; 

Answer 2

[doneItem setImage:[UIImage imageNamed:@"yourImage.png"] forState:UIControlStateNormal]; 

Answer 3

UIButton *urButton = [UIButton buttonWithType:UIButtonTypeCustom]; 
urButton.frame = urRequiredFrame; 
[urButton setImage:urImage forState:UIControlStateNormal]; 
[urButton addTarget:self action:@selector(donePressed:) 
    forControlEvents:UIControlEventTouchUpInside]; 

UIBarButtonItem *doneButton =[[UIBarButtonItem alloc] initWithCustomView:urButton]; 
self.navigationItem.rightBarButtonItem=doneButton; 

Answer 4

请试试这个代码：

UIButton *btnNext1 =[[UIButton alloc] init]; 
[btnNext1 setBackgroundImage:[UIImage imageNamed:@"btnNext.png"] forState:UIControlStateNormal]; 

btnNext1.frame = CGRectMake(100, 100, 50, 30); 
UIBarButtonItem *btnNext =[[UIBarButtonItem alloc] initWithCustomView:btnNext1]; 
[btnNext1 addTarget:self action:@selector(nextButtonClicked) forControlEvents:UIControlEventTouchUpInside]; 
self.navigationItem.rightBarButtonItem = btnNext; 

Answer 5

UIBarButtonItem *_btn=[[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:@"XXXXXXX.png"] 
                style:UIBarButtonItemStylePlain 
                target:self 
                action:@selector(yourMethod)]; 

self.navigationItem.rightBarButtonItem=_btn; 

Answer 6

一个简单的方法：

UIImage* customImg = [UIImage imageNamed:@"custom-img.png"]; 

UIBarButtonItem *_customButton = [[UIBarButtonItem alloc] initWithImage:customImg style:UIBarButtonItemStyleDone target:nil action:nil]; 

self.navigationItem.rightBarButtonItems = [[NSArray alloc] initWithObjects:_customButton, nil]; 

然后如果你需要多个按钮，你可以和其他UIBarButtonItem到initWithObjects。

Answer 7

如果有人需要斯威夫特代码接受的答案：

let infoImage = UIImage(named: "my-icon-32.png") 
let imgWidth = infoImage?.size.width 
let imgHeight = infoImage?.size.height 
let button:UIButton = UIButton(frame: CGRect(x: 0,y: 0,width: imgWidth!, height: imgHeight!)) 
button.setBackgroundImage(infoImage, forState: .Normal) 
button.addTarget(self, action: Selector("openInfo"), forControlEvents: UIControlEvents.TouchUpInside) 
self.navigationItem.rightBarButtonItem = UIBarButtonItem(customView: button) 

附： Gurpreet Singh答案只适用于透明PNG，我还必须设置除clearColor以外的按钮tintcolor。

Answer 8

做到这一点。它更简单。

1. 把图像文件在项目目录

2. 文件添加到Xcode中（右键点击Xcode项目，文件添加到“项目名称”）

3. 选择您的UIBarButtonItem在故事板

4. 点击“图像”，找到你的形象（见截图）

5. 庆祝，因为它可以完美工作，并且不需要不必要的代码。

Answer 9

要拿起了answer by Gurpreet Singh。要保持已有按钮的当前状态，请重新使用目标和操作。

SEL selector = self.navigationItem.rightBarButtonItem.action; 
id target = self.navigationItem.rightBarButtonItem.target; 
UIBarButtonItem *_btn=[[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:@"icon_close.png"] 
                 style:UIBarButtonItemStylePlain 
                target:target 
                action:selector]; 

self.navigationItem.rightBarButtonItem = _btn; 

Answer 10

在斯威夫特

其他解决方案使用以下方法imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal)：

let img = UIImage(named: "picture")!.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal) 
let leftBarButtonItem = UIBarButtonItem(image: img, style: UIBarButtonItemStyle.Plain, target: self, action: nil) 
self.navigationItem.leftBarButtonItem = leftBarButtonItem 

Answer 11

下面是我的作品。我发现30x30在导航栏中的按钮尺寸很好。 UIImage自动缩放到按钮尺寸。

UIImage *image = [UIImage imageNamed:@"XXXXXXXXXX"]; 
UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 30, 30)]; 
[button setBackgroundImage:image forState:UIControlStateNormal]; 
[button addTarget:self action:@selector(someAction) forControlEvents:UIControlEventTouchUpInside]; 
button.adjustsImageWhenHighlighted = NO; 
UIBarButtonItem *rightButton =[[UIBarButtonItem alloc] initWithCustomView:button]; 
self.navigationItem.rightBarButtonItem = rightButton; 

Answer 12

let sliderImageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 40, height: 30)) 
    sliderImageView.contentMode = .ScaleAspectFit 
    sliderImageView.image = UIImage(named: "sliderMenu") 

    OR 

    var sliderImage = UIImage(named: "sliderMenu") 
    navigationItem.leftBarButtonItem?.image = sliderImage