无涯教程-OC - Split View函数

Split View是iPad专用的容器，用于并排管理两个视图控制器的视图控制器。

Split View - 重要属性

• delegate
• viewControllers

Split View - 示例代码

步骤1 - 创建一个新项目，然后选择 Master Detail Application (而不是基于View的应用程序)，然后单击"Next"，输入项目名称并选择create。

步骤2 - 默认情况下，将创建一个简单的拆分视图控制器，该控件在master中具有表视图。

步骤3 - 这些文件创建的内容与基于View的应用程序略有不同。在这里，无涯教程为无涯教程创建了以下文件。

• AppDelegate.h
• AppDelegate.m
• DetailViewController.h
• DetailViewController.m
• DetailViewController.xib
• MasterViewController.h
• MasterViewController.m
• MasterViewController.xib

步骤4 -  AppDelegate.h 文件如下-

#import <UIKit/UIKit.h>
@interface AppDelegate : UIResponder <UIApplicationDelegate>
@property (strong， nonatomic) UIWindow *window;
@property (strong， nonatomic) UISplitViewController *splitViewController;
@end

步骤5 -  AppDelegate.m 中的 didFinishLaunchingWithOptions 方法如下-

- (BOOL)application:(UIApplication *)application 
   didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
   self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen]bounds]];
//应用程序启动后自定义的覆盖点。
MasterViewController masterViewController = [[MasterViewController
alloc] initWithNibName:@"MasterViewController" bundle:nil];
UINavigationController masterNavigationController =
[[UINavigationController alloc] initWithRootViewController:
masterViewController];
DetailViewController detailViewController =
[[DetailViewController alloc] initWithNibName:@"DetailViewController"
bundle:nil];
UINavigationController detailNavigationController =
[[UINavigationController alloc] initWithRootViewController:
detailViewController];
masterViewController.detailViewController = detailViewController;
self.splitViewController = [[UISplitViewController alloc] init];
self.splitViewController.delegate = detailViewController;
self.splitViewController.viewControllers =
@[masterNavigationController， detailNavigationController];
self.window.rootViewController = self.splitViewController;
[self.window makeKeyAndVisible];
return YES;

步骤6 - MasterViewController.h如下-

#import <UIKit/UIKit.h>
@class DetailViewController;
@interface MasterViewController : UITableViewController
@property (strong， nonatomic) DetailViewController *detailViewController;
@end

步骤7 - MasterViewController.m如下-

#import "MasterViewController.h"
#import "DetailViewController.h"
@interface MasterViewController () {
NSMutableArray *_objects;
}
@end
@implementation MasterViewController
- (id)initWithNibName:(NSString )nibNameOrNil bundle:(NSBundle )
nibBundleOrNil {
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
self.title = NSLocalizedString(@"Master"， @"Master");
self.clearsSelectionOnViewWillAppear = NO;
self.contentSizeForViewInPopover = CGSizeMake(320.0， 600.0);
}
return self;
}
- (void)viewDidLoad {
[super viewDidLoad];
self.navigationItem.leftBarButtonItem = self.editButtonItem;
UIBarButtonItem *addButton = [[UIBarButtonItem alloc]
initWithBarButtonSystemItem: UIBarButtonSystemItemAdd
target:self action:@selector(insertNewObject:)];
self.navigationItem.rightBarButtonItem = addButton;
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
//处置任何可以重新创建的资源。
}
- (void)insertNewObject:(id)sender {
if (!_objects) {
_objects = [[NSMutableArray alloc] init];
}
[_objects insertObject:[NSDate date] atIndex:0];
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:0];
[self.tableView insertRowsAtIndexPaths:@[indexPath] withRowAnimation:
UITableViewRowAnimationAutomatic];
}
#pragma mark - Table View
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:
(NSInteger)section {
return _objects.count;
}
//自定义表格视图单元格的外观。
- (UITableViewCell )tableView:(UITableView )tableView cellForRowAtIndexPath:
(NSIndexPath )indexPath {
static NSString CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:
CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:
UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
NSDate *object = _objects[indexPath.row];
cell.textLabel.text = [object description];
return cell;
}
- (BOOL)tableView:(UITableView )tableView canEditRowAtIndexPath:
(NSIndexPath )indexPath {
//如果您不希望指定的项目可编辑，则返回 NO。
return YES;
}
- (void)tableView:(UITableView )tableView commitEditingStyle:
(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:
(NSIndexPath )indexPath {
if (editingStyle == UITableViewCellEditingStyleDelete) {
[_objects removeObjectAtIndex:indexPath.row];
[tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:
UITableViewRowAnimationFade];
} else if (editingStyle == UITableViewCellEditingStyleInsert) {
//创建相应类的新实例，将其插入
//数组，并在表格视图中添加一个新行。
}
}
/*
//Override to support rearranging the table view.

(void)tableView:(UITableView *)tableView moveRowAtIndexPath:
(NSIndexPath *) fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath {
}
*/

/*
//Override to support conditional rearranging of the table view.

(BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:
(NSIndexPath *)indexPath {
//如果您不希望该商品可重新订购，请返回 NO。
return YES;
}
*/

- (void)tableView:(UITableView )tableView didSelectRowAtIndexPath:
(NSIndexPath )indexPath {
NSDate object = _objects[indexPath.row];
self.detailViewController.detailItem = object;
NSDateFormatter formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat: @"yyyy-MM-dd HH:mm:ss zzz"];

NSString *stringFromDate = [formatter stringFromDate:object];
self.detailViewController.detail描述Label.text = stringFromDate;
}
@end

步骤8 - DetailViewController.h如下-

#import <UIKit/UIKit.h>
@interface DetailViewController : UIViewController
<UISplitViewControllerDelegate>
@property (strong， nonatomic) id detailItem;
@property (weak， nonatomic) IBOutlet UILabel *detail描述Label;
@end

步骤9 - DetailViewController.m如下-

#import "DetailViewController.h"
@interface DetailViewController ()
@property (strong， nonatomic) UIPopoverController *masterPopoverController;
- (void)configureView;
@end
@implementation DetailViewController
#pragma mark - Managing the detail item
- (void)setDetailItem:(id)newDetailItem {
if (_detailItem != newDetailItem) {
_detailItem = newDetailItem;
  </span><span class="com">//Update the view.</span><span class="pln">
  </span><span class="pun">[</span><span class="kwd">self</span><span class="pln"> configureView</span><span class="pun">];</span><span class="pln">

}
if (self.masterPopoverController != nil) {
[self.masterPopoverController dismissPopoverAnimated:YES];
}

}
- (void)configureView {
//更新详细信息项的用户界面。
if (self.detailItem) {
self.detailRemarkLabel.text = [self.detailItem description];
}
}
- (void)viewDidLoad {
[super viewDidLoad];
[self configureView];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
//处置任何可以重新创建的资源。
}
- (id)initWithNibName:(NSString )nibNameOrNil bundle:
(NSBundle )nibBundleOrNil {
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
self.title = NSLocalizedString(@"Detail"， @"Detail");
}
return self;
}
#pragma mark - Split view
- (void)splitViewController:(UISplitViewController )splitController
willHideViewController:(UIViewController )viewController withBarButtonItem:
(UIBarButtonItem )barButtonItem forPopoverController:
(UIPopoverController )popoverController {
barButtonItem.title = NSLocalizedString(@"Master"， @"Master");
[self.navigationItem setLeftBarButtonItem:barButtonItem animated:YES];
self.masterPopoverController = popoverController;
}
- (void)splitViewController:(UISplitViewController )splitController
willShowViewController:(UIViewController )viewController
invalidatingBarButtonItem:(UIBarButtonItem *)barButtonItem {
//当视图在拆分视图中再次显示时调用，
//使按钮和弹出框控制器无效。
[self.navigationItem setLeftBarButtonItem:nil animated:YES];
self.masterPopoverController = nil;
}
@end

步骤10 - 运行应用程序时，无涯教程将在横向模式下获得以下输出-

步骤11 - 切换模式时，无涯教程将获得以下输出-

参考链接

www.learnfk.com/ios/ios-ui-…