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吗?
请帮帮我。
答案 0 :(得分:80)
试试这段代码:
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];
答案 1 :(得分:53)
UIBarButtonItem *_btn=[[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:@"XXXXXXX.png"]
style:UIBarButtonItemStylePlain
target:self
action:@selector(yourMethod)];
self.navigationItem.rightBarButtonItem=_btn;
答案 2 :(得分:6)
请尝试以下代码:
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;
答案 3 :(得分:5)
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;
答案 4 :(得分:5)
如果有人需要Swift代码来接受答案:
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)
P.S。 Gurpreet Singh的答案仅适用于透明PNG,我还必须设置除clearColor之外的按钮tintcolor。
答案 5 :(得分:3)
在 Swift
中使用以下withRenderingMode(UIImage.RenderingMode.alwaysOriginal)
方法的其他解决方案:
let img = UIImage(named: "picture")!.withRenderingMode(UIImage.RenderingMode.alwaysOriginal)
let leftBarButtonItem = UIBarButtonItem(image: img, style: UIBarButtonItem.Style.plain, target: self, action: nil)
self.navigationItem.leftBarButtonItem = leftBarButtonItem
答案 6 :(得分:3)
这对我有用。我发现30x30对于导航栏中的按钮来说是个不错的尺寸。 UIImage会自动缩放到按钮大小。
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;
答案 7 :(得分:0)
[doneItem setImage:[UIImage imageNamed:@"yourImage.png"] forState:UIControlStateNormal];
答案 8 :(得分:0)
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,如果您需要多个按钮,您可以只需UIBarButtonItem
到initWithObjects
。
答案 9 :(得分:0)
这样做。这样更简单。
将图像文件放在项目目录中
将文件添加到Xcode中(右键单击Xcode项目,将文件添加到“项目名称”)
在故事板中选择您的UIBarButtonItem
点击“图片”找到你的图片(见截图)
庆祝,因为它会完美运作,不需要任何不必要的代码。
答案 10 :(得分:0)
选择answer by Gurpreet Singh。要保持现有按钮的当前状态,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;
答案 11 :(得分:0)
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