//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"
letleftBarBtn =UIBarButtonItem(barButtonSystemItem: .Camera, target:self, action:"leftBtnAction")
//设置右边按钮
letrightBarBtn =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
letsegment =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
letmyView =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
funcrightBtnAction(){
//(1)创建第二个控制器
letsecondVC =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)
}
funcleftBtnAction(){
print("click left Btn")
}
overridefuncdidReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
overridefuncviewDidLoad() {
super.viewDidLoad()
//设置页面颜色为白色
view.backgroundColor=UIColor.whiteColor()
//设置标题
navigationItem.title="SecondVC"
letleftBarBtn =UIBarButtonItem(title:"back", style:UIBarButtonItemStyle.Plain, target:self, action:"backAction:")
navigationItem.leftBarButtonItem= leftBarBtn
letrightBtn =UIBarButtonItem(title:"进入3", style:UIBarButtonItemStyle.Plain, target:self, action:"pushToThirdVC")
navigationItem.rightBarButtonItem= rightBtn
}
funcpushToThirdVC(){
letthirdVC =ThirdViewController()
navigationController?.pushViewController(thirdVC, animated:true)
}
funcbackAction(btn:UIBarButtonItem){
print("返回")
//将SecondVc出棧popViewControllerAnimated:将当前显示在棧顶的控制器出棧(回到上一个页面)
navigationController?.popViewControllerAnimated(true)
}
overridefuncdidReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
overridefuncviewDidLoad() {
super.viewDidLoad()
navigationItem.title="thirdVC"
letrightBtn =UIBarButtonItem(title:"进入4", style:UIBarButtonItemStyle.Plain, target:self, action:"pushToFourthVC")
navigationItem.rightBarButtonItem= rightBtn
}
funcpushToFourthVC(){
letfourthVC =FourthViewController()
navigationController?.pushViewController(fourthVC, animated:true)
}
overridefuncdidReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
