ios 导航视图控制器 跳转

import UIKit

class ViewController: UIViewController {

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
    //设置导航栏的标题
    //每一个被导航视图控制器所管理的视图控制器都有一个navigationItem(这里面包含了类左按钮，右按钮，中间标题，中间视图)
    navigationItem.title = "Setting"
    //设置导航栏左按钮
    let letfBarBtn = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.Search, target: self, action: "letfBtnAction")
    let rightBarBtn = UIBarButtonItem(title: "next", style: UIBarButtonItemStyle.Plain, target: self, action: "rightBtnAction")

// let rightBarBtn = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.Rewind, target: self, action: "rightBtnAction")

navigationItem.leftBarButtonItem = letfBarBtn

navigationItem.rightBarButtonItem = rightBarBtn

// navigationItem.leftBarButtonItems = [letfBarBtn,rightBarBtn]

// navigationItem.rightBarButtonItems = [rightBarBtn,letfBarBtn]

//设置中间视图

let segment = UISegmentedControl(items: ["已接来电","未接来电"])

segment.frame = CGRectMake(0, 0, 100, 30)

segment.selectedSegmentIndex = 0

navigationItem.titleView = segment

    //导航栏(UINavigationBar)
    //在本类中（视图控制器）访问navigationController就是获取到本视图控制器所在的导航视图控制器
    //设置导航栏是否隐藏
    navigationController?.navigationBarHidden = false

    //设置导航栏样式
    navigationController?.navigationBar.barStyle = UIBarStyle.Default
    //背景颜色
    navigationController?.navigationBar.backgroundColor = UIColor.cyanColor()
    //导航栏本身的颜色
    navigationController?.navigationBar.barTintColor = UIColor.yellowColor()
    //导航栏元素颜色(左按钮 右按钮 中间标题........)
    navigationController?.navigationBar.tintColor = UIColor.redColor()
    //导航栏半透明效果
    navigationController?.navigationBar.translucent = true

    let myView = UIView(frame: CGRectMake(0, 0, 150, 150))
    myView.backgroundColor = UIColor.blueColor()
    view.addSubview(myView)
}
func letfBtnAction(){
    print("dfsfdsf")
}
//跳转第二个控制器页面
func rightBtnAction(){
    //（1）创建第二个控制器
    let secondVC = SecondViewController()
    //（2）使用当前控制所在的导航视图控制器跳转到第二个控制器pushViewController（进入到下一个页面）
    navigationController?.pushViewController(secondVC, animated: true)
}
override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

}

import UIKit

class SecondViewController: UIViewController {

override func viewDidLoad() {
    super.viewDidLoad()
    //设置页面颜色为白色
    view.backgroundColor = UIColor.whiteColor()
    navigationItem.title = "SecondVC"

    let leftBarBtn = UIBarButtonItem(title: "back", style: UIBarButtonItemStyle.Plain, target: self, action: "backAction:")
    let rightBarBtn = UIBarButtonItem(title: "next", style: UIBarButtonItemStyle.Plain, target: self, action: "rightBtnAction")
    navigationItem.leftBarButtonItem = leftBarBtn
    navigationItem.rightBarButtonItem = rightBarBtn

    // Do any additional setup after loading the view.
}
func backAction(btn:UIBarButtonItem){
    print("111")
    //将secondVC出輚
    //(回到上一个页面)将SecondVC出輚popViewControllerAnimated:将当前显示在栈顶的控制器出輚
   // navigationController?.popViewControllerAnimated(true)
    //先获取到棧里所有的视图控制器
    let viewControllers = navigationController?.viewControllers
    //获取根视图控制器（因为根视图控制器是最先入栈，所以在第0个下标）
    let rootVC: AnyObject = viewControllers![0]
    //导航视图控制器返回到指定的视图控制器
    navigationController?.popToViewController(rootVC as! UIViewController, animated: true)
}
func rightBtnAction(){
    let ThirdVC = ThirdViewController()
    navigationController?.pushViewController(ThirdVC, animated: true)
}
override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.

}

/*
// MARK: - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    // Get the new view controller using segue.destinationViewController.
    // Pass the selected object to the new view controller.
}
*/

}

import UIKit

class ThirdViewController: UIViewController {

override func viewDidLoad() {
    super.viewDidLoad()
    let myBtn = UIButton(frame: CGRectMake(100, 130, 100, 45))
    myBtn.setTitle("模态显示", forState: UIControlState.Normal)
    myBtn.setTitleColor(UIColor.blackColor(), forState: UIControlState.Normal)
    myBtn.backgroundColor = UIColor.redColor()
    myBtn.addTarget(self, action: "presentToFifes", forControlEvents: UIControlEvents.TouchUpInside)
    view.addSubview(myBtn)
    let leftBarBtn = UIBarButtonItem(title: "back", style: UIBarButtonItemStyle.Plain, target: self, action: "backAction:")
    // Do any additional setup after loading the view.
}
func backAction(btn:UIBarButtonItem){
    print("222")
    navigationController?.popViewControllerAnimated(true)
}

func presentToFifes(){
        print("模态")
        let foursVC = FoursViewController()
    //模态显示，跟导航视图控制器没关系
    //参数completion:模态显示完成后要执行的闭包
        presentViewController(foursVC, animated: true) { () -> Void in

    }

}
override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

/*
// MARK: - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    // Get the new view controller using segue.destinationViewController.
    // Pass the selected object to the new view controller.
}
*/

import UIKit

class FoursViewController: UIViewController {

override func viewDidLoad() {
    super.viewDidLoad()
    view.backgroundColor = UIColor.cyanColor()
    let modelBtn = UIButton(frame: CGRectMake(80, 150, 80, 45))
    modelBtn.setTitle("模态消失", forState: UIControlState.Normal)
    modelBtn.backgroundColor = UIColor.whiteColor()
    modelBtn.setTitleColor(UIColor.blackColor(), forState: UIControlState.Normal)
    modelBtn.addTarget(self, action: "dismissViewController", forControlEvents: UIControlEvents.TouchUpInside)
    view.addSubview(modelBtn)
    // Do any additional setup after loading the view.
}
func dismissViewController(){
    //1.第一种方式:dismissViewController()模态消失过程不可定制化
    //2.第二种方式:模态消失过程可定制化（需不需要动画，模态结束后执行代码段	）
    dismissViewControllerAnimated(true, completion: { () -> Void in
        print("模态消失动作已经结束")
    })
}
override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

/*
// MARK: - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    // Get the new view controller using segue.destinationViewController.
    // Pass the selected object to the new view controller.
}
*/

}