导航基础
import UIKit
class OtherViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
self.view.backgroundColor = UIColor.cyan
//1、导航控制器中间title，两种方法都可以
// self.title = "One"
self.navigationItem.title = "One"
//2、导航条中间出了显示文字，还可以显示任意视图，显示图片
// let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 40, height: 40))
// self.view.addSubview(imageView)
// imageView.image = #imageLiteral(resourceName: "qd.png")
// imageView.contentMode = .scaleAspectFit
// self.navigationItem.titleView = imageView
//3、导航控制器中间title颜色
self.navigationController?.navigationBar.titleTextAttributes = [NSForegroundColorAttributeName:UIColor.purple]
// self.navigationController?.navigationBar.titleTextAttributes = [NSFontAttributeName: UIFont.systemFont(ofSize: 30), NSForegroundColorAttributeName: UIColor.black]
//4系统按钮edit
let rightItem = UIBarButtonItem(barButtonSystemItem: .edit, target: self, action: #selector(pushTwoAction))
//4.1设置右边按钮
self.navigationItem.rightBarButtonItem = rightItem
//这个属性不能修改标题文字的颜色
//能够修改左右按钮的文字颜色
self.navigationController?.navigationBar.tintColor = UIColor.red
//4.2自定义标题按钮
let leftBtn = UIBarButtonItem(title: "分类", style: .plain, target: self, action: #selector(clickLeft(_:)))
//self.navigationItem.leftBarButtonItem = leftBtn
//4.3自定义图标按钮
let images = UIImage(named: "2")?.withRenderingMode(UIImageRenderingMode.alwaysOriginal)//注意图片显示方式
let navImageBtn = UIBarButtonItem(image: images, style: .plain, target: self, action: #selector(clickLeft2))
self.navigationItem.leftBarButtonItems = [leftBtn, navImageBtn]
let DeviceWidth = UIScreen.main.bounds.width
// let DeviceHeight = UIScreen.main.bounds.height
let bu = UIButton(frame: CGRect(x: 0, y: 100, width: DeviceWidth, height: 50))
self.view.addSubview(bu)
bu.setTitle("下一页", for: .normal)
bu.backgroundColor = UIColor.brown
bu.addTarget(self, action: #selector(presnetAction), for: .touchUpInside)
// 4.4适配普通机型与X
let navHeight = UIApplication.shared.statusBarFrame.size.height + 44.0
print(navHeight)
bu.frame = CGRect(x: 0, y: navHeight, width: DeviceWidth, height: 50)
// let tabHeight = UIApplication.shared.statusBarFrame.size.height>20?83:49
}
// 模态跳转
func presnetAction() {
let two = TwoViewController()
let nextNav = UINavigationController(rootViewController: two)
/*
视图控制器翻转效果
由下向上推出（默认模式） CoverVertical
水平翻转 FlipHorizontal
淡入淡出 CrossDissolve
翻页效果 PartialCurl
注意：如果有导航视图控制器时，翻转效果设置在导航视图控制器；没有时则设置在视图控制器。
*/
nextNav.modalTransitionStyle = .crossDissolve
self.present(nextNav, animated: true, completion: nil)
}
func clickLeft2(){
print("clickLeft2")
}
//导航跳转，参数是UIBarButtonItem类型的对象
func clickLeft(_ btn: UIBarButtonItem){
print("clickLeft")
let two = TwoViewController()
self.navigationController?.pushViewController(two, animated: true)
}
// 自定义动画
func pushTwoAction(){
let two = TwoViewController()
//1、push方法
// 转场动画1
UIView.beginAnimations(nil, context: nil)
UIView.setAnimationCurve(UIViewAnimationCurve.easeInOut)
UIView.setAnimationDuration(0.6)
self.navigationController?.pushViewController(two, animated: true)
UIView.setAnimationTransition(UIViewAnimationTransition.curlUp, for: self.navigationController!.view, cache: false)
UIView.commitAnimations()
}
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 prepare(for segue: UIStoryboardSegue, sender: Any?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/
}
//
// TwoViewController.swift
// Nav
//
// Created by hushuzhen on 2017/7/11.
// Copyright © 2017年 swifts. All rights reserved.
//
import UIKit
class TwoViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
self.view.backgroundColor = UIColor.gray
self.title = "Two"
// 1.导航栏是否隐藏
self.navigationController?.navigationBar.isHidden = false
// 2.导航栏隐藏左边backitem，即leftbarbuttonitem
//完全隐藏backItem//
self.navigationItem.setHidesBackButton(true, animated: true)
// 3.导航栏leftbarbuttonitem的颜色设置
self.navigationController?.navigationBar.tintColor = UIColor.black
// 8.导航栏重新定义leftbarbuttonitem
//重新定义backItem，将覆盖原来的BackItem.与storyboard中拖入一个item，效果一样。都是覆盖原来的backitem。
// 导航返回按钮，不做任何设置，系统默认上一页标题
// 第一种代码定义方式，设置系统按钮
// self.navigationItem.setLeftBarButton(UIBarButtonItem(barButtonSystemItem: .camera, target: self, action: #selector(backToOneVC)), animated: true)
//第二种代码定义方式，初始化自定义
// self.navigationItem.leftBarButtonItem = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.add, target: self, action: #selector(backToOneVC))
// 第三种代码定义的方式，自定义文字按钮
self.navigationItem.setLeftBarButton(UIBarButtonItem(title: "< 返回", style: .plain, target: self, action: #selector(backToOneVC)), animated: true)
// 4.导航栏leftbarbuttonitem的字体，颜色，大小设置
self.navigationItem.leftBarButtonItem?.setTitleTextAttributes([NSForegroundColorAttributeName:UIColor.blue,NSFontAttributeName: UIFont(name: "Chalkduster", size: 15)!], for: .normal)
// 第四种自定义图片为左按钮
// let leftBtns = UIBarButtonItem(image: UIImage.init(named: "2")?.withRenderingMode(UIImageRenderingMode.alwaysOriginal), style: .plain, target: self, action: #selector(backToOneVC))
//// //消除左边的间隙
// let space = UIBarButtonItem(barButtonSystemItem: .fixedSpace, target: nil, action: nil)
// space.width = -10
// self.navigationItem.leftBarButtonItems = [space,leftBtns]
// 9.导航栏设置成透明
//将导航栏设置成透明
// 2.导航栏的最底部颜色设置
//backgroundColor 是最底下的color
self.navigationController?.navigationBar.backgroundColor = UIColor.yellow
self.navigationController?.navigationBar.setBackgroundImage(UIImage(), for: UIBarMetrics.default)
// self.navigationController!.navigationBar.shadowImage = UIImage()
self.navigationController?.navigationBar.isTranslucent = true
self.navigationItem.rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: .bookmarks, target: self, action: #selector(comeToNext))
}
func backToOneVC() {
//2、pop方法
self.navigationController?.popViewController(animated: true)
// 返回根视图self.navigationController?.popToRootViewControllerAnimated(true);
}
func comeToNext() {
print("点击写一页")
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
UIViewController扩展
import UIKit
extension UIViewController{
//自定义导航栏
func changeSystemNav() {
//隐藏系统的导航栏 不然点击事件受到影响
self.navigationController?.isNavigationBarHidden=true
// 创建一个导航栏
let navBar = UINavigationBar(frame: CGRect(x:0, y:20, width:self.view.frame.size.width, height:60))
// 导航栏背景颜色
navBar.backgroundColor = UIColor.blue
//这里是导航栏透明
//navBar.shadowImage = UIImage()
//navBar.setBackgroundImage(UIImage(), for: UIBarMetrics.default)
// 自定义导航栏的title，用UILabel实现
let titleLabel = UILabel(frame: CGRect(x:0,y:0,width:50,height:60))
titleLabel.text = "LOG IN"
titleLabel.textColor = UIColor.red
//这里使用系统自定义的字体
//titleLabel.font = UIFont(name: "Roboto-Medium", size: 16)
// 创建导航栏组件
let navItem = UINavigationItem()
// 设置自定义的title
navItem.titleView = titleLabel
// 创建左侧按钮
let leftButton = UIBarButtonItem(title: "leftButton", style: .plain, target: self, action: nil)
leftButton.tintColor = UIColor.red
// 创建右侧按钮
let rightButton = UIBarButtonItem(title: "rightButton", style: .plain, target: self, action: nil)
rightButton.tintColor = UIColor.red
// 添加左侧、右侧按钮
navItem.setLeftBarButton(leftButton, animated: false)
navItem.setRightBarButton(rightButton, animated: false)
navigationItem.setHidesBackButton(true, animated: false)
// 把导航栏组件加入导航栏
navBar.pushItem(navItem, animated: false)
// 导航栏添加到view上
self.view.addSubview(navBar)
}
}
