Question

当我尝试以下代码时，条形按钮与边缘间距约为30px，

但我希望距离边缘只有2个像素。有没有办法呢？

我只想要条形按钮，而不是自定义UIButton。

UIImage* buttonImage = [UIImage imageNamedH568: @"publish_button.png"];

UIButton * clearButton = [UIButton buttonWithType: UIButtonTypeCustom];

clearButton.frame           = CGRectMake(244.0f, 5.0f, 65.0f, 33.0f);
clearButton.titleLabel.font = [Utils helveticaBoldFontOfSize: 12.0f];

[clearButton setBackgroundImage: buttonImage                        forState: UIControlStateNormal];
[clearButton setTitle:           NSLocalizedString(@"Clear", nil) forState: UIControlStateNormal];
[clearButton setTitleColor:      [UIColor whiteColor]               forState: UIControlStateNormal];

[clearButton addTarget: self action: @selector(clearNotificationsList:) forControlEvents: UIControlEventTouchUpInside];

UIBarButtonItem* clearItem = [[UIBarButtonItem alloc] initWithCustomView: clearButton];

self.navigationItem.rightBarButtonItem = clearItem;

Answer 1

从UINavigationItem-iOS7Spacing

添加了以下两个功能

 - (UIBarButtonItem *)spacer
{
    UIBarButtonItem *space = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
    space.width = -11;
    return space;
}

- (BOOL)isIOS7
{
    return ([[[UIDevice currentDevice] systemVersion] compare:@"7" options:NSNumericSearch] != NSOrderedAscending);
}

然后在loadView中使用以下内容 -

 UIBarButtonItem* clearItem = [[UIBarButtonItem alloc] initWithCustomView: clearButton];

    if ([self isIOS7]) {
        self.navigationItem.rightBarButtonItems = @[[self spacer],clearItem];
    }
    else
    {
        self.navigationItem.rightBarButtonItem = clearItem;
    }

完美无缺地工作

谢谢大家的帮助！

Answer 2

设置框架不会起作用。

您必须对图像使用以下内容：

[clearButton setBackgroundImage:[[UIImage imageNamed:@"publish_button"] imageWithAlignmentRectInsets:UIEdgeInsetsMake(0, - 10 : 0 , 0, 0)] forState:UIControlStateNormal];// -10 or something that suits you.

标题如下：

clearButton.titleEdgeInsets = UIEdgeInsetsMake(0, - 10, 0, 0);

编辑：

或者，您可以使用以下两者：

clearButton.contentEdgeInsets = UIEdgeInsetsMake(0, -10, 0, 0);

Answer 3

更好地使用UINavigationItem-iOS7Spacing类别

https://github.com/marius-/UINavigationItem-iOS7Spacing

我希望导航栏中的条形按钮项目位于导航栏的最右侧角落

3 个答案: