如何將UIBarButtonItem放在UIToolbar的右側？

Question

我設計了一個視圖，其中包含一個在Interface Builder中模態顯示的工具欄。我有一個位於左側的UIBarButtonItem，我希望它出現在工具欄的右側。我如何在IB或通過代碼執行此操作？

Answer 1

這裏是如何做到這一點的代碼，如果有人遇到這個帖子：

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

插入標識符爲「靈活空間」的項目。

Answer 3

如果你能逃脫這不是一個的UIBarButtonItem（例如，信息按鈕），我做的是改變按鈕的層總是在工具欄的前面。這樣，當我在IB中的工具欄上拖動按鈕時，它不會自動將它吸入到左側。

Answer 4

Swift代碼：

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

- 在這樣

正確的項目

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]; 

個

- 兩個項目左，右像這樣

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]; 

三防項目這樣

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]; 

個- 四個項目這樣

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，當你想添加一個空格，你必須添加柔性杆按鈕。

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 
    }() 

輸出：