[英]Positioning image of navigationBar backButton
我将图像添加到导航控制器的后退按钮,如下所示:
self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"ITButton.png"] style:UIBarButtonItemStyleBordered target:nil action:nil];
它工作正常,因此,我的图像未与<back符号对齐。 图像在符号上方,我希望两者都居中。 我不知道为什么 我尝试使用以下方法对此进行调整:
[self.navigationItem.backBarButtonItem setImageInsets:UIEdgeInsetsMake(10, 0, 0, 0)];
但什么都没有改变。
有很多方法可以解决此问题,我遇到了同样的问题,然后我用这种方法解决了
-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
if([self.navigationController.viewControllers objectAtIndex:0] != self)
{
UIButton *backButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 26, 26)];
[backButton setImage:[UIImage imageNamed:@"home.png"] forState:UIControlStateNormal];
[backButton setShowsTouchWhenHighlighted:TRUE];
[backButton addTarget:self action:@selector(popViewControllerWithAnimation) forControlEvents:UIControlEventTouchDown];
UIBarButtonItem *barBackItem = [[UIBarButtonItem alloc] initWithCustomView:backButton];
self.navigationItem.hidesBackButton = TRUE;
self.navigationItem.leftBarButtonItem = barBackItem;
}
}
-(void)popViewControllerWithAnimation
{
[self.navigationController popViewControllerAnimated:YES];
}
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