ios7 UIBarButtonItem 边距问题

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ios7下UIBarButtonItem 边距偏大，看起来感觉不是很舒服；

搜索方法，得到解决方案如下：

//////////////////////////////////@interface UINavigationItem (margin)@end@implementation UINavigationItem (margin)#if __IPHONE_OS_VERSION_MAX_ALLOWED > __IPHONE_6_1- (void)setLeftBarButtonItem:(UIBarButtonItem *)_leftBarButtonItem{    if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0)    {        UIBarButtonItem *negativeSeperator = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];        negativeSeperator.width = -10;                if (_leftBarButtonItem)        {            [self setLeftBarButtonItems:@[negativeSeperator, _leftBarButtonItem]];        }        else        {            [self setLeftBarButtonItems:@[negativeSeperator]];        }        [negativeSeperator release];    }    else    {        [self setLeftBarButtonItem:_leftBarButtonItem animated:NO];    }}- (void)setRightBarButtonItem:(UIBarButtonItem *)_rightBarButtonItem{    if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0)    {        UIBarButtonItem *negativeSeperator = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];        negativeSeperator.width = -12;                if (_rightBarButtonItem)        {            [self setRightBarButtonItems:@[negativeSeperator, _rightBarButtonItem]];        }        else        {            [self setRightBarButtonItems:@[negativeSeperator]];        }        [negativeSeperator release];    }    else    {        [self setRightBarButtonItem:_rightBarButtonItem animated:NO];    }}#endif@end

以上代码可以放置在主视图控制器的.m文件里面，@implementation ViewController的上面

转载自：http://www.cnblogs.com/maxfong/p/3375167.html