ios-导航控制器

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//
// ViewController.swift
// UINavigationController
//
// Created by SZT on 2016/11/2.
// Copyright © 2016年 SZT. All rights reserved.
//

import UIKit

class ViewController: UIViewController {

override func viewDidLoad() {    super.viewDidLoad()    //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（这里面包含了左按钮，右按钮，中间标题，中间视图）    //设置导航栏的标题    navigationItem.title = "Setting"    let leftBarBtn = UIBarButtonItem(barButtonSystemItem: .Camera, target: self, action: "leftBtnAction")    //设置右边按钮    let rightBarBtn = UIBarButtonItem(title: "next", style: UIBarButtonItemStyle.Plain, target: self, action: "rightBtnAction")    //设置导航栏左按钮leftBarButtonItem:(UIBarButtonItem)    navigationItem.leftBarButtonItem = leftBarBtn    navigationItem.rightBarButtonItem = rightBarBtn    // 设置左右item数组

// navigationItem.leftBarButtonItems = [leftBarBtn,rightBarBtn]
// navigationItem.rightBarButtonItems = [leftBarBtn,rightBarBtn]
//设置中间视图
let segment = UISegmentedControl(items: [“已接来电”,”未接来 dian”])
segment.frame = CGRectMake(0, 0, 100, 30)
segment.selectedSegmentIndex = 1
//设置中间视图
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 = .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.........)    navigationController?.navigationBar.tintColor = UIColor.redColor()    //导航栏半透明效果    navigationController?.navigationBar.translucent = false    let myView = UIView(frame: CGRectMake(0,0,150,150))    myView.backgroundColor = UIColor.blueColor()    view.addSubview(myView)

// navigationController的contentView显示的谁的View？

}//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)使用当前控制器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)}func leftBtnAction(){    print("click left Btn")}override func didReceiveMemoryWarning() {    super.didReceiveMemoryWarning()    // Dispose of any resources that can be recreated.}

}

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