Swift在導覽列左側或者右側放置多個按鈕例子

使用 navigationItem.leftBarButtonItem 和 navigationItem.rightBarButtonItem 可以很方便的分別設定導覽列左側和右側按鈕，但一側只能有一個按鈕。

如果想要在一側使用多個按鈕，可以通過 leftBarButtonItems 和 rightBarButtonItems 來實現。 

 

下面示範給導覽列右側添加兩個按鈕（搜尋和設定）：

同時兩個按鈕間設定了間距，並將設定按鈕頂到邊上。

import UIKit
 
class ViewController: UIViewController {
 
    override func viewDidLoad() {
        super.viewDidLoad()
         
        //搜尋按鈕
        let button1 = UIButton(frame:CGRectMake(0, 0, 18, 18))
        button1.setImage(UIImage(named: "search"), forState: .Normal)
        button1.addTarget(self,action:Selector("tapped1"),forControlEvents:.TouchUpInside)
        let barButton1 = UIBarButtonItem(customView: button1)
         
        //設定按鈕
        let button2 = UIButton(frame:CGRectMake(0, 0, 18, 18))
        button2.setImage(UIImage(named: "settings"), forState: .Normal)
        button2.addTarget(self,action:Selector("tapped2"),forControlEvents:.TouchUpInside)
        let barButton2 = UIBarButtonItem(customView: button2)
         
        //按鈕間的空隙
        let gap = UIBarButtonItem(barButtonSystemItem: .FixedSpace, target: nil,
            action: nil)
        gap.width = 15;
         
        //用於消除右邊邊空隙，要不然按鈕頂不到最邊上
        let spacer = UIBarButtonItem(barButtonSystemItem: .FixedSpace, target: nil,
            action: nil)
        spacer.width = -10;
         
        //設定按鈕（注意順序）
        self.navigationItem.rightBarButtonItems = [spacer,barButton2,gap,barButton1]
    }
     
    func tapped1(){
        print("搜尋按鈕點擊")
    }
     
    func tapped2(){
        print("設定按鈕點擊")
    }
     
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }
}

好了以上就是關於ios開中導覽列的放多個按鈕的例子。