iOS7 UI兼容 导航栏按钮边框 UINavigationItem left and right padding_移动开发_编程开发_程序员俱乐部

iOS7之前的UI为：

而在iOS7中，由于设计方面的原因，使得UI变为:

修改的方法重写UINavigationItem的setLeftBarButtonItem和setRightBarButtonItem方法，使之与之前版本兼容；

代码如下：

@interface UINavigationItem (margin)

@end

@implementation UINavigationItem (margin)
#if __IPHONE_OS_VERSION_MAX_ALLOWED > __IPHONE_6_1
- (void)setLeftBarButtonItem:(UIBarButtonItem *)_leftBarButtonItem
{
    UIBarButtonItem *spaceButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
    spaceButtonItem.width = -12;
    
    if (_leftBarButtonItem)
    {
        [self setLeftBarButtonItems:@[spaceButtonItem, _leftBarButtonItem]];
    }
    else
    {
        [self setLeftBarButtonItems:@[spaceButtonItem]];
    }
    [spaceButtonItem release];
}

- (void)setRightBarButtonItem:(UIBarButtonItem *)_rightBarButtonItem
{
    UIBarButtonItem *spaceButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
    spaceButtonItem.width = -12;
    
    if (_rightBarButtonItem)
    {
        [self setRightBarButtonItems:@[spaceButtonItem, _rightBarButtonItem]];
    }
    else
    {
        [self setRightBarButtonItems:@[spaceButtonItem]];
    }
    [spaceButtonItem release];
}
#endif

@end

项目源码不做任何修改，问题解决；

添加Button：

UIBarButtonItem *leftBarItem = [[UIBarButtonItem alloc] initWithCustomView:btnBack];
self.navigationItem.leftBarButtonItem = leftBarItem;
[leftBarItem release];

博文地址：http://www.cnblogs.com/maxfong/p/3375167.html