1,分割视图控制器(UISplitViewController)
4,样例代码
--- AppDelegate.swift 应用入口 ---
--- MasterViewController.swift 列表页 ---
--- DetailViewController.swift 详情页 ---
(注意:项目直接新建一个Master-Detail Application,就已经具有同上述一样的兼容iPhone、iPad的二级导航功能)
在iPhone应用中,使用导航控制器由上一层界面进入下一层界面。
但iPad屏幕较大,通常使用SplitViewController来实现导航(这个是iPad专用的视图控制器)。在横屏下,左侧显示一个 导航列表,点击后右边显示对应的详情。竖屏情况下显示方式会有所不同,默认只显示详细面板,原来左侧的导航列表会通过浮动窗口隐藏,需要从边缘向内拖动来 显示。
2,开发兼容的iOS应用
有时候需要开发兼容iPhone、iPod、iPad的应用,这时候需要判断设备类型,如果是iPhone、iPod就不应该使用
SplitViewController。另外处理方式也会有变化,如点击列表项时,在iPad直接在右侧展示详情,而iPhone却需要导航到详细页。
iOS提供了UIDevice类来判断设备的类型,其userInterfaceIdiom属性返回设备类型枚举
3,样例效果图
iPhone:
iPad:(注:iPad要旋转成横屏,竖屏下一片空白)
--- AppDelegate.swift 应用入口 ---
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import UIKit
@UIApplicationMain class AppDelegate : UIResponder , UIApplicationDelegate {
var window: UIWindow ?
func application(application: UIApplication ,
didFinishLaunchingWithOptions launchOptions: [ NSObject : AnyObject ]?) -> Bool {
self .window = UIWindow (frame: UIScreen .mainScreen().bounds)
// Override point for customization after application launch.
self .window!.backgroundColor = UIColor .whiteColor()
self .window!.makeKeyAndVisible()
//初始化列表面板
let master = MasterViewController ()
//初始化详情面板
let detail = DetailViewController ()
//设置列表面板引用详情面板,以便用户点击列表项时调用详情面板的相应方法
master.detailViewController = detail
//用导航包装master列表,显示导航条,如果是分割面板也不影响功能
let nav = UINavigationController (rootViewController: master)
// 如果是iPhone或iPod则只显示列表页,如果是iPad则显示分割面板
if ( UIDevice .currentDevice().userInterfaceIdiom == . Phone ) {
self .window!.rootViewController = nav
}
else {
//初始化分割面板
let split = UISplitViewController ()
//设置分割面板的2个视图控制器
split.viewControllers = [nav, detail]
//分割面板作为window的主视图加载
self .window!.rootViewController = split
}
return true
}
func applicationWillResignActive(application: UIApplication ) {
}
func applicationDidEnterBackground(application: UIApplication ) {
}
func applicationWillEnterForeground(application: UIApplication ) {
}
func applicationDidBecomeActive(application: UIApplication ) {
}
func applicationWillTerminate(application: UIApplication ) {
}
} |
--- MasterViewController.swift 列表页 ---
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import UIKit
class MasterViewController : UIViewController , UITableViewDelegate , UITableViewDataSource {
// 表格加载
var tableView: UITableView ?
// 控件类型
var ctrls = [ "UILabel" , "UIButton" , "UIImageView" , "UISlider" ]
//
var detailViewController: DetailViewController ?
override func viewDidLoad() {
super .viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
self .title = "Swift控件演示"
self .tableView = UITableView (frame: self .view.frame, style: UITableViewStyle . Plain )
self .tableView!.delegate = self
self .tableView!.dataSource = self
self .tableView!.registerClass( UITableViewCell . self , forCellReuseIdentifier: "SwiftCell" )
self .view.addSubview( self .tableView!)
}
override func didReceiveMemoryWarning() {
super .didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// UITableViewDataSource协议方法
func tableView(tableView: UITableView , numberOfRowsInSection section: Int ) -> Int
{
return self .ctrls.count
}
// UITableViewDataSource协议方法
func tableView(tableView: UITableView , cellForRowAtIndexPath indexPath: NSIndexPath )
-> UITableViewCell
{
let cell = tableView.dequeueReusableCellWithIdentifier( "SwiftCell" ,
forIndexPath: indexPath) as ! UITableViewCell
cell.accessoryType = UITableViewCellAccessoryType . DisclosureIndicator
cell.textLabel?.text = self .ctrls[indexPath.row]
return cell
}
// UITableViewDelegate协议方法,点击时调用
func tableView(tableView: UITableView , didSelectRowAtIndexPath indexPath: NSIndexPath )
{
//调用DetailViewController的方法更新详细页
detailViewController!.loadControl( self .ctrls[indexPath.row])
//如果是iPhone、iPod则导航到详情页
if ( UIDevice .currentDevice().userInterfaceIdiom == . Phone ) {
// 跳转到detailViewController,取消选中状态
//self.tableView!.deselectRowAtIndexPath(indexPath, animated: true)
// navigationController跳转到detailViewController
self .navigationController!.pushViewController(detailViewController!, animated: true )
}
}
} |
--- DetailViewController.swift 详情页 ---
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import UIKit
class DetailViewController : UIViewController {
override func viewDidLoad() {
super .viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
self .view.backgroundColor = UIColor .whiteColor()
let ctrl = self .title != nil ? self .title! : ""
loadControl(ctrl)
}
override func didReceiveMemoryWarning() {
super .didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func loadControl(ctrl: String ) {
clearViews()
switch (ctrl) {
case "UILabel" :
var label = UILabel (frame: self .view.bounds)
label.backgroundColor = UIColor .clearColor()
label.textAlignment = NSTextAlignment . Center
label.font = UIFont .systemFontOfSize(36)
label.text = "Hello, Hangge.com"
self .view.addSubview(label)
case "UIButton" :
var button = UIButton (frame: CGRectMake (110,120,100,60))
button.backgroundColor = UIColor .blueColor()
button.setTitleColor( UIColor .redColor(), forState: UIControlState . Normal )
button.setTitleColor( UIColor .whiteColor(), forState: UIControlState . Highlighted )
button.setTitle( "点击我" , forState: . Normal )
self .view.addSubview(button)
default :
println ( "clicked: \(ctrl)" )
}
}
func clearViews() {
for v in self .view.subviews {
v.removeFromSuperview()
}
}
} |
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