IPAD之分割视图 SplitViewController
转载自:http://www.w3cschool.cc/ios/att-ios-ui-splitview-htm.html 1 分割视图的使用
分割视图是 iPad 的特定视图控制器用于管理两个视图控制器,在左侧是一个主控制器,其右侧是一个详细信息视图控制器。 重要的属性 delegate
viewControllers
示例代码和步骤
.创建一个新项目,选择Master Detail Application并单击下一步,输入项目名称,然后选择创建。 .简单的分割视图控制器与母版中的表视图是默认创建的。 .在这里我们为我们创建的下列文件。 AppDelegate.h
AppDelegate.m
DetailViewController.h
DetailViewController.m
DetailViewController.xib
MasterViewController.h
MasterViewController.m
MasterViewController.xib
. AppDelegate.h文件如下所示 #import <UIKit/UIKit.h> @interface AppDelegate : UIResponder <UIApplicationDelegate> @property (strong, nonatomic) UIWindow *window; @property (strong, nonatomic) UISplitViewController *splitViewController; @end
.在AppDelegate.m中的didFinishLaunchingWithOptions方法,如下所示 - (BOOL)application:(UIApplication *)application
didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen]
bounds]];
// Override point for customization after application launch.
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;
}
. MasterViewController.h,如下所示 #import <UIKit/UIKit.h> @class DetailViewController; @interface MasterViewController : UITableViewController @property (strong, nonatomic) DetailViewController *detailViewController; @end
. MasterViewController.m,如下所示 #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];
// Dispose of any resources that can be recreated.
} - (void)insertNewObject:(id)sender
{
if (!_objects) {
_objects = [[NSMutableArray alloc] init];
}
[_objects insertObject:[NSDate date] atIndex:];
NSIndexPath *indexPath = [NSIndexPath indexPathForRow: inSection:];
[self.tableView insertRowsAtIndexPaths:@[indexPath] withRowAnimation:
UITableViewRowAnimationAutomatic];
} #pragma mark - Table View - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return ;
} - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:
(NSInteger)section
{
return _objects.count;
} // Customize the appearance of table view cells.
- (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
{
// Return NO if you do not want the specified item to be editable.
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) {
// Create a new instance of the appropriate class, insert it into
//the array, and add a new row to the table view.
}
} /*
// 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
{
// Return NO if you do not want the item to be re-orderable.
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.detailDescriptionLabel.text = stringFromDate;
} @end . DetailViewController.h ,如下所示 #import <UIKit/UIKit.h> @interface DetailViewController : UIViewController
<UISplitViewControllerDelegate> @property (strong, nonatomic) id detailItem; @property (weak, nonatomic) IBOutlet UILabel *detailDescriptionLabel;
@end
. DetailViewController.m ,如下所示 #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; // Update the view.
[self configureView];
} if (self.masterPopoverController != nil) {
[self.masterPopoverController dismissPopoverAnimated:YES];
}
} - (void)configureView
{
// Update the user interface for the detail item. if (self.detailItem) {
self.detailDescriptionLabel.text = [self.detailItem description];
}
} - (void)viewDidLoad
{
[super viewDidLoad];
[self configureView];
} - (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
} - (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
{
// Called when the view is shown again in the split view,
//invalidating the button and popover controller.
[self.navigationItem setLeftBarButtonItem:nil animated:YES];
self.masterPopoverController = nil;
} @end
.现在当我们运行应用程序时,在横向模式下我们会得到下面的输出 masterDetailOutput1 . 当我们切换到纵向模式,我们会获得下面的输出: masterDetailOutput2
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