大家好，我在ipad应用程序中使用splitviewcontroller，在其中选择表视图中的每一行将显示新的detailviewcontroller，在我的detailview之一中，我再次推送新的detailviewcontroller（detailview2），并在该类（detailview2）中定义协议并设置它并在按下后退按钮时触发协议方法，并且我的rootview（tableview）正在实现该协议，但是即使在设置委托后也没有调用该方法。如果我在detailview1中定义了相同的协议并且rootview正在实现则协议我在下面发布代码的地方没有调用方法。我不明白为什么会这样发生。任何建议都会有很大帮助。 Detailview2.h
@protocol ModalControllerDelegate;
@interface ViewController : UIViewController<UIPopoverControllerDelegate, UISplitViewControllerDelegate>{
}
@property (nonatomic, assign) id <ModalControllerDelegate> delegate;
@end
@protocol ModalControllerDelegate <NSObject>
- (void)modalControllerDidFinish:(ViewController*)modalController;
@end
Detailview2.m
-(void)back {
// Tell the controller to go back
NSLog(@"ghhskfh");
[delegate modalControllerDidFinish:self];
[self.navigationController popViewControllerAnimated:YES];
}
根视图
@interface RootViewController : UITableViewController<UITableViewDelegate, UITableViewDataSource,ModalDelegate,ModalControllerDelegate> {
FirstDetailViewController *firstDetailViewController;
SecondDetailViewController *secondDetailViewController;
MultipleDetailViewsWithNavigatorAppDelegate *appDelegate;
}
@end
根视图
- (void)viewDidLoad
{
[super viewDidLoad];
self.title=@"RootView";
self.viewcontroller=[[ViewController alloc]init];
self.viewcontroller.delegate=self;
//[self.tableView setDelegate:self];
//[self.tableView setDataSource:self];
}
#pragma mark -
#pragma mark ModalController delegate
- (void)modalControllerDidFinish:(ViewController *)modalController {
NSLog(@"modalControllerDidFinish");
}
myappdelegate.m（如有必要）
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after app launch.
self.splitViewController =[[UISplitViewController alloc]init];
self.rootViewController=[[RootViewController alloc]init];
self.detailViewController=[[[FirstDetailViewController alloc]init] autorelease];
UINavigationController *rootNav=[[UINavigationController alloc]initWithRootViewController:rootViewController];
UINavigationController *detailNav=[[UINavigationController alloc]initWithRootViewController:detailViewController];
self.splitViewController.viewControllers=[NSArray arrayWithObjects:rootNav,detailNav,nil];
self.splitViewController.delegate=self.detailViewController;
// Add the split view controller's view to the window and display.
[window addSubview:self.splitViewController.view];
[window makeKeyAndVisible];
return YES;
}
最佳答案
在您的App委托方法中实施以下代码可能可以解决您的问题。
请尝试下面的代码，我认为调用代表是可行的。
已编辑
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after app launch.
self.splitViewController =[[UISplitViewController alloc]init];
self.rootViewController=[[RootViewController alloc]init];
self.detailViewController=[[[FirstDetailViewController alloc]init] autorelease];
UINavigationController *rootNav=[[UINavigationController alloc]initWithRootViewController:rootViewController];
UINavigationController *detailNav=[[UINavigationController alloc]initWithRootViewController:detailViewController];
self.splitViewController.viewControllers=[NSArray arrayWithObjects:rootNav,detailNav,nil];
self.splitViewController.delegate=self.detailViewController;
//Changes Made here
self.rootViewController.firstDetailViewController=self.detailViewController;
// Add the split view controller's view to the window and display.
[window addSubview:self.splitViewController.view];
[window makeKeyAndVisible];
return YES;
}