如何将UIBarButtonItem放在UIToolbar的右侧？

Question

我设计了一个视图，其中包含一个在Interface Builder中模态显示的工具栏。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或通过代码执行此操作？

Answer 1

这里是如何做到这一点的代码，如果有人遇到这个帖子：

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

如果你能逃脱这不是一个的UIBarButtonItem（例如，信息按钮），我做的是改变按钮的层总是在工具栏的前面。这样，当我在IB中的工具栏上拖动按钮时，它不会自动将它吸入到左侧。

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 
} 

Answer 5

- 在这样

正确的项目

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]; 

个

- 两个项目左，右像这样

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]; 

三防项目这样

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]; 

个- 四个项目这样

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，当你想添加一个空格，你必须添加柔性杆按钮。

Answer 6

斯威夫特3.x或以上：

internal var textFieldHandlerToolBar: UIToolbar = { 
     let tb = UIToolbar.init(frame: CGRect.init(origin: .zero, size: CGSize.init(width: UIScreen.screenSize().width, height: 44.0))) 
     let flexibleButton = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.flexibleSpace, target: nil, action: nil) 
     let doneBarButton = UIBarButtonItem.init(title: "Done", style: UIBarButtonItemStyle.done, target: self, action: #selector(actionDonePickerSelection)) 
     tb.setItems([flexibleButton, doneBarButton], animated: false) 
     return tb 
    }() 

输出：