如何在導航欄按鈕項中添加自定義圖像？

Question

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

這是我的應用程序的代碼，我需要在此按鈕上添加圖像？

請幫幫我。

Answer 1

試試這個代碼：

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

請試試這個代碼：

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

一個簡單的方法：

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]; 

然後如果你需要多個按鈕，你可以和其他UIBarButtonItem到initWithObjects。

Answer 7

如果有人需要斯威夫特代碼接受的答案：

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答案只適用於透明PNG，我還必須設置除clearColor以外的按鈕tintcolor。

Answer 8

做到這一點。它更簡單。

1. 把圖像文件在項目目錄

2. 文件添加到Xcode中（右鍵點擊Xcode項目，文件添加到「項目名稱」）

3. 選擇您的UIBarButtonItem在故事板

4. 點擊「圖像」，找到你的形象（見截圖）

5. 慶祝，因爲它可以完美工作，並且不需要不必要的代碼。

Answer 9

要拿起了answer by Gurpreet Singh。要保持已有按鈕的當前狀態，請重新使用目標和操作。

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

其他解決方案使用以下方法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。我發現30x30在導航欄中的按鈕尺寸很好。 UIImage自動縮放到按鈕尺寸。

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