Question

以下是我用于在导航栏上插入自定义UIBarButtonItem作为leftButton的代码。问题是按钮太靠近左边缘了，我不知道如何在不使用左侧填充的另一个图像的情况下缩进它？

UIButton *btn = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 20, 20)];
btn.imageEdgeInsets = UIEdgeInsetsMake(0, 10, 0, 0);
[btn setBackgroundImage:[UIImage imageNamed:@"image.png"] forState:UIControlStateNormal];
self.myBtn = btn;
[btn release];

UIBarButtonItem *barBtn = [[UIBarButtonItem alloc] initWithCustomView:self.myBtn];
self.myBarBtn = barBtn;
self.myBarBtn.imageInsets = UIEdgeInsetsMake(0, 5, 0, 0);
[self.navigationItem setLeftBarButtonItem:self.myBarBtn animated:YES];
[barBtn release];

我试过调整框架，edgeInsets，一切都没有运气。 barButtonItem仍然太靠近左边缘。有没有办法来偏移按钮的图像？

THX

Answer 1

    UIImage *buttonImage = [UIImage imageNamed:@"Close.png"];
    UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
    [button setImage:buttonImage forState:UIControlStateNormal];
    button.imageEdgeInsets = UIEdgeInsetsMake(0, -40, 0, 0);
    button.frame = CGRectMake(0, 0, buttonImage.size.width, buttonImage.size.height);

    [button addTarget:self action:@selector(donePressed:) forControlEvents:UIControlEventTouchUpInside];

    //create a UIBarButtonItem with the button as a custom view
    UIBarButtonItem *customBarItem = [[UIBarButtonItem alloc] initWithCustomView:button];
    self.navigationItem.leftBarButtonItem = customBarItem;

Answer 2

有自定义左，右按钮，快捷语言

let buttonEdit: UIButton = UIButton.buttonWithType(UIButtonType.Custom) as UIButton
buttonEdit.frame = CGRectMake(0, 0, 40, 40)
buttonEdit.setImage(UIImage(named:"nav-right-Y.png"), forState: UIControlState.Normal)
buttonEdit.addTarget(self, action: "rightNavItemEditClick", forControlEvents: UIControlEvents.TouchUpInside)
var rightBarButtonItemEdit: UIBarButtonItem = UIBarButtonItem(customView: buttonEdit)
self.navigationItem.rightBarButtonItem = rightBarButtonItemEdit

如何在navBar上偏移UIBarButtonItem内的UIButton图像？

2 个答案: