使用自定义 UIBarButtonItem
代替 leftBarButtonItem
,但是当我如果按到按钮周围20像素的区域,也会执行按钮的动作。
代码:
- (void)changeNavbarButtons
{
UIButton *backButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 44, 44)];
[backButton setBackgroundImage:[UIImage imageNamed:@"navbarBack.png"] forState:UIControlStateNormal];
[backButton addTarget:self action:@selector(popViewController) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *backItem = [[UIBarButtonItem alloc] initWithCustomView:backButton];
UIBarButtonItem *negativeSpacer = [[UIBarButtonItem alloc]
initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace
target:nil action:nil];
negativeSpacer.width = -5;
self.navigationItem.leftBarButtonItems = [NSArray
arrayWithObjects:negativeSpacer, backItem, nil]; self.navigationItem.hidesBackButton = YES;
}
negativeSpacer 向左移动了按钮5个像素。