Question

我可以将图像提供给导航栏，也可以更改导航栏按钮项的图像。出于某种原因，导航栏图像，我猜，重叠在导航栏按钮图像上。当我单击左侧的导航栏图像但导航栏按钮未显示在导航栏图像上时，导航栏按钮正常工作。这是代码;

UIImage *imagebar = [UIImage imageNamed: @"schedule-strip.png"];
UIImageView *imageView = [[UIImageView alloc] initWithImage: imagebar];
imageView.frame = CGRectMake(0, 0, 190, 44);
imageView.contentMode = UIViewContentModeScaleAspectFill;
self.navigationItem.titleView = imageView;


UIImage* image = [UIImage imageNamed:@"back-icon.png"];
CGRect frame = CGRectMake(0, 0, image.size.width, image.size.height);
UIButton* someButton = [[UIButton alloc] initWithFrame:frame];
[someButton setBackgroundImage:image forState:UIControlStateNormal];
[someButton setShowsTouchWhenHighlighted:YES];
[someButton addTarget:self action:@selector(backToMore) forControlEvents:UIControlEventTouchUpInside];

UIBarButtonItem* someBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:someButton];
[self.navigationItem setLeftBarButtonItem:someBarButtonItem];

[someBarButtonItem release];
[someButton release];

帮助我。

Answer 1

使用代码 [imageView addsubView someButton];

我希望你现在会看到这个按钮。实际上你要将左边的按钮项添加到默认导航栏中，当你创建一些按钮时，它没有被添加到与导航栏重叠的imageview上。所以点击该区域它正在工作，但按钮不可见。

Answer 2

Ketan你检查了图像吗？你的项目中是否存在图像？为什么要使用导航栏标题的框架和内容模式属性？愿这个链接帮助你

http://iosdevelopertips.com/user-interface/ios-5-customize-uinavigationbar-and-uibarbuttonitem-with-appearance-api.html

Answer 3

- (void)drawRect:(CGRect)rect {
    UIImage *image = [UIImage imageNamed: @"TopBg.png"];
    [image drawInRect:CGRectMake(0, 0, self.frame.size.width, self.frame.size.height)];
}

扩展@interface MyToolBar：UIToolbar并创建MyToolBar的对象。之后，为导航栏创建自定义按钮。享受并喜欢它

导航栏图像隐藏自定义导航栏按钮

3 个答案: