UINavigationController *navi;        if ([[UIDevice currentDevice]userInterfaceIdiom]==UIUserInterfaceIdiomPad)    {//Ipad设备        navi = [[UINavigationController alloc]initWithRootViewController:[IpadViewController new]];    }    else    {        navi = [[UINavigationController alloc]initWithRootViewController:[IphoneViewController new]];    }        self.window.rootViewController = navi;

#import "IpadViewController.h"#import "ListViewController.h"@interface IpadViewController (){    UIPopoverController *_leftPopController;}@end@implementation IpadViewController- (void)viewDidLoad{    [super viewDidLoad];    // Do any additional setup after loading the view.    self.title = @"Ipad";    self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc]initWithTitle:@"Pop" style:UIBarButtonItemStyleDone target:self action:@selector(jumpLeftPop:)];}-(void)jumpLeftPop:(id)sender{    if (_leftPopController == nil)    {        ListViewController *list = [ListViewController new];        UINavigationController *nav = [[UINavigationController alloc]initWithRootViewController:list];        //漂浮视图控制器        _leftPopController = [[UIPopoverController alloc]initWithContentViewController:nav];        _leftPopController.delegate = self;        _leftPopController.popoverContentSize = CGSizeMake(320, 300);        list.pop = _leftPopController;    }    [_leftPopController presentPopoverFromBarButtonItem:sender permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES];//模态显示}

#import "ListViewController.h"@interface ListViewController ()@end@implementation ListViewController- (void)viewDidLoad{    self.title = @"选择你喜欢的颜色";    _listTableView = [[UITableView alloc]initWithFrame:self.view.frame style:UITableViewStylePlain];    _listTableView.delegate = self;    _listTableView.dataSource = self;    [self.view addSubview:_listTableView];        [super viewDidLoad];    // Do any additional setup after loading the view.        self.dataSourse = [[NSMutableArray alloc]initWithArray: @[@"red",@"yellow",@"blue",@"green",@"gray"]];    }-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{    return  self.dataSourse.count;}-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{    static NSString *identifier = @"cellIdentifier";    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];    if (cell == nil)    {        cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier];    }    cell.textLabel.text = [self.dataSourse objectAtIndex:indexPath.row];    cell.selectionStyle = UITableViewCellSelectionStyleNone;    return cell;}-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{    [self.pop dismissPopoverAnimated:YES];}

MasterViewController *master = [[MasterViewController alloc]init];    UINavigationController *navMaster = [[UINavigationController alloc]initWithRootViewController:master];    DetailViewController *detail = [[DetailViewController alloc]init];    UINavigationController *navDetail = [[UINavigationController alloc]initWithRootViewController:detail];    //分割视图控制器    UISplitViewController *split = [[UISplitViewController alloc]init];    split.viewControllers = @[navMaster,navDetail];    split.delegate = detail;    split.tabBarItem = detail.tabBarItem;    self.window.rootViewController = split;

@interface DetailViewController : UIViewController<UIPopoverControllerDelegate,UISplitViewControllerDelegate>@property(nonatomic,retain)UIPopoverController *pop;@end

#import "DetailViewController.h"#import "ModelViewController.h"@interface DetailViewController (){    ModelViewController *_modelController;    UISegmentedControl *_segment;}@end@implementation DetailViewController- (void)viewDidLoad{    [super viewDidLoad];    self.title = @"detail";    self.view.backgroundColor = [UIColor whiteColor];        _segment = [[UISegmentedControl alloc]initWithItems:@[@"one",@"two",@"three",@"four"]];    _segment.frame = CGRectMake(350,100, 320, 40);    _segment.selectedSegmentIndex = 0;    [self.view addSubview:_segment];        UIButton *nextBtn = [UIButton buttonWithType:UIButtonTypeRoundedRect];    nextBtn.frame = CGRectMake(350, 200, 200, 40);    [nextBtn setTitle:@"nextController" forState:0];    [nextBtn addTarget:self action:@selector(nextContrller:) forControlEvents:7];    [self.view addSubview:nextBtn];    }-(void)nextContrller:(id)sender{    if (_modelController==nil)    {        _modelController = [[ModelViewController alloc]init];    }    _modelController.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;//转出动画样式    switch (_segment.selectedSegmentIndex)    {        case 0:        {            _modelController.modalPresentationStyle = UIModalPresentationFullScreen;//全屏，默认样式，IPhone只能全屏            break;        }        case 1:        {            _modelController.modalPresentationStyle = UIModalPresentationPageSheet;//竖屏全屏，横屏宽768            break;        }        case 2:        {            _modelController.modalPresentationStyle = UIModalPresentationFormSheet;//不是全屏的，固定540*620            break;        }        case 3:        {            _modelController.modalPresentationStyle = UIModalPresentationCurrentContext;//detailController控制器自身显示大小有关，全屏自身控制器            break;        }        default:            break;    }        [self presentViewController:_modelController animated:YES completion:nil];}#pragma mark 分割视图控制器DelegateMethods- (void)splitViewController:(UISplitViewController *)svc     willHideViewController:(UIViewController *)aViewController          withBarButtonItem:(UIBarButtonItem *)barButtonItem       forPopoverController:(UIPopoverController *)pc{    barButtonItem.title = @"主页列表";    self.navigationItem.leftBarButtonItem = barButtonItem;    self.pop = pc;}- (void)splitViewController: (UISplitViewController*)svc     willShowViewController:(UIViewController *)aViewController  invalidatingBarButtonItem:(UIBarButtonItem *)barButtonItem{    self.navigationItem.leftBarButtonItem = nil;    self.pop = nil;}@end

@interface MasterViewController : UIViewController<UITableViewDataSource,UITableViewDelegate>@property(nonatomic,retain)NSMutableArray *dataSourse;@property(nonatomic,retain)UITableView *listTableView;@end

#import "MasterViewController.h"@interface MasterViewController ()@end@implementation MasterViewController- (void)viewDidLoad{    self.title = @"master";    _listTableView = [[UITableView alloc]initWithFrame:self.view.frame style:UITableViewStylePlain];    _listTableView.delegate = self;    _listTableView.dataSource = self;    [self.view addSubview:_listTableView];    [super viewDidLoad];    self.dataSourse = [[NSMutableArray alloc]initWithArray: @[@"red",@"yellow",@"blue",@"green",@"gray"]];}-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{    return  self.dataSourse.count;}-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{    static NSString *identifier = @"cellIdentifier";    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];    if (cell == nil)    {        cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier];    }    cell.textLabel.text = [self.dataSourse objectAtIndex:indexPath.row];    cell.selectionStyle = UITableViewCellSelectionStyleNone;    return cell;}@end