如何将UIBarButtonItem放在UIToolbar的右侧？

Question

我设计了一个带有工具栏的视图,该工具栏在Interface Builder中以模态方式显示.我有一个位于左侧的UIBarButtonItem,我希望它出现在工具栏的右侧.我如何在IB中或通过代码执行此操作？

Answer 1

如果有人遇到这篇文章,这里是如何在代码中执行此操作:

UIBarButtonItem *leftButton = [[[UIBarButtonItem alloc] initWithTitle:@"Item" style:UIBarButtonItemStyleBordered target:self action:@selector(btnItem1Pressed:)] autorelease];

UIBarButtonItem *flex = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil] autorelease];

UIBarButtonItem *rightButton = [[[UIBarButtonItem alloc] initWithTitle:@"Item" style:UIBarButtonItemStyleBordered target:self action:@selector(btnItem2Pressed:)] autorelease];


self.toolbarItems = [NSArray arrayWithObjects: leftButton, flex, rightButton, nil];

Answer 2

插入标识符为"灵活空间"的项目.

Answer 3

- 像这样在右边的一个项目

UIBarButtonItem *flexible = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];

UIBarButtonItem *item1 = [[UIBarButtonItem alloc] initWithTitle:@"item1” style:UIBarButtonItemStylePlain target:self action:nil];

self.toolbarItems = [NSArray arrayWithObjects: flexible, item1, nil];

- 像这样左右两个项目

UIBarButtonItem *flexible = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];

UIBarButtonItem *item1 = [[UIBarButtonItem alloc] initWithTitle:@"item1” style:UIBarButtonItemStylePlain target:self action:nil];
UIBarButtonItem *item2 = [[UIBarButtonItem alloc] initWithTitle:@"item2” style:UIBarButtonItemStylePlain target:self action:nil];

self.toolbarItems = [NSArray arrayWithObjects: item1, flexible, item2, nil];

- 这样的三件物品

UIBarButtonItem *flexible = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];

UIBarButtonItem *item1 = [[UIBarButtonItem alloc] initWithTitle:@"item1” style:UIBarButtonItemStylePlain target:self action:nil];
UIBarButtonItem *item2 = [[UIBarButtonItem alloc] initWithTitle:@"item2” style:UIBarButtonItemStylePlain target:self action:nil];
UIBarButtonItem *item3 = [[UIBarButtonItem alloc] initWithTitle:@"item3” style:UIBarButtonItemStylePlain target:self action:nil];

self.toolbarItems = [NSArray arrayWithObjects: item1, flexible, item2, flexible, item3, nil];

- 像这样的四件物品

UIBarButtonItem *flexible = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];

UIBarButtonItem *item1 = [[UIBarButtonItem alloc] initWithTitle:@"item1” style:UIBarButtonItemStylePlain target:self action:nil];
UIBarButtonItem *item2 = [[UIBarButtonItem alloc] initWithTitle:@"item2” style:UIBarButtonItemStylePlain target:self action:nil];
UIBarButtonItem *item3 = [[UIBarButtonItem alloc] initWithTitle:@"item3” style:UIBarButtonItemStylePlain target:self action:nil];
UIBarButtonItem *item4 = [[UIBarButtonItem alloc] initWithTitle:@"item4” style:UIBarButtonItemStylePlain target:self action:nil];

self.toolbarItems = [NSArray arrayWithObjects: item1, flexible, item2, item3, flexible, item4, nil];

所以当你想要添加一个空格时,你必须添加灵活的条形按钮.

Answer 4

SWIFT代码:

func addDoneButton() -> UIToolbar {
    let toolbar = UIToolbar()
    let flexButton = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FlexibleSpace, target: nil, action: nil)
    let doneButton = UIBarButtonItem(title: "Done", style: .Plain, target: self, action: Selector("donePressed"))
    toolbar.setItems([flexButton, doneButton], animated: true)
    toolbar.sizeToFit()
    return toolbar
}