How can i close UIView - objective-c

Question

I'm new to iOS and Objective-C. I have an application that displays a table view, and opens a new view when click the user clicks on a row.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[tableView deselectRowAtIndexPath:indexPath animated:YES];
DetailViewController *detailController = [[DetailViewController alloc] initWithNibName:#"DetailView" bundle:nil];
[detailController changeSubjectText:[subject_data_Array objectAtIndex:indexPath.row]];
//navigationController = [[UINavigationController alloc] initWithRootViewController:detailController];
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
[self.window addSubview:navigationController.view];
[self.window makeKeyAndVisible];
}
In my detail view I have coded:
-(IBAction)closeDetail:(id)sender {
NSLog(#"closeDetail");
[self.view removeFromSuperview];
}
But it's not working. Can anyone help?
Can anyone help me?
how i can close view?
download my code in --> http://www.vasuta.com/ios/multiview2.zip
open build and run click one row in "Bulletin Board" DetailView it's open click Close …..
why DetailView is not full screen and why can't close detail view?
i open it wrong or i close it wrong
help me please
didSelectRowAtIndexPath you can see in "GadgetBulletinsTVContoller.m" and close command you can see in "DetailViewController.m"
Thank you very much
ps. sorry for my english skill :(

Answer 1

Why are you creating that window object and why are you trying to add your subview to it?
if you want to add a subview you should add it to the parent, the tableview or the parent of the tableView.
a better idea would be to push a new view controller on the stack that would display the info you want to show.
Here is a tutorial that shows how to push a new view controller when selecting a cell in a tableview tutorial link .
EDIT:
in MultipleAppDelegate - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions should look like below:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
self.viewController = [[MultipleViewController alloc] initWithNibName:#"MultipleViewController" bundle:nil];
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:self.viewController];
navController.navigationBarHidden = YES;
self.window.rootViewController = navController;
[self.window makeKeyAndVisible];
return YES;
}
In GadgetBulletinsTVContoller.h declare a protocol like below:
#protocol GadgetBulletinsTVControllerDelegate <NSObject>
#optional
- (void)showItemDetails:(id)selectedItem;
#end
and a delegate property:
#property (nonatomic, assign)id<GadgetBulletinsTVControllerDelegate>delegate;
In GadgetBulletinsTVContoller.m synthesize the delegate.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
should look like this:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
if([delegate respondsToSelector:#selector(showItemDetails:)])
{
[delegate showItemDetails:[subject_data_Array objectAtIndex:indexPath.row]];
}
}
In FirstViewController.m tell the controller to implement the GadgetBulletinsTVControllerDelegate like this:
#interface FirstViewController ()<GadgetBulletinsTVControllerDelegate>
in viewDidLoad method tell the gadgetBulletinsController that his delegate is the FirstViewController class, like this:
if (gadgetBulletinsContoller == nil) {
gadgetBulletinsContoller = [[GadgetBulletinsTVContoller alloc] init];
gadgetBulletinsContoller.delegate = self;
}
and implement the GadgetBulletinsTVControllerDelegate's methods:
- (void)showItemDetails:(id)selectedItem
{
if([delegate respondsToSelector:#selector(showDetailsScreenForItem:)])
{
[delegate showDetailsScreenForItem:selectedItem];
}
}
In FirstViewController.h declare a protocol like below:
#protocol FirstViewControllerDelegate <NSObject>
- (void)showDetailsScreenForItem:(id)item;
#end
and declare a delegate property like below(don't forget to synthesize in .m file):
#property (nonatomic, assign)IBOutlet id<FirstViewControllerDelegate>delegate;
In MultipleViewController.xib select the FirstViewController screen and in outlets drag from the delegate to the fileOwner for setting the value of the delegate to the MultipleViewController(you can do this in code if you want to).
In MultipleViewController.m tell the MultipleViewController to implement the FirstViewControllerDelegate protocol like below:
#interface MultipleViewController ()<FirstViewControllerDelegate>
and implement the protocol method:
- (void)showDetailsScreenForItem:(id)item
{
DetailViewController *detailController = [[DetailViewController alloc] initWithNibName:#"DetailView" bundle:nil];
[detailController changeSubjectText:item];
[self.navigationController pushViewController:detailController animated:YES];
}
In DetailViewController modify the closeDetail method to look like this:
- (IBAction)closeDetail:(id)sender {
NSLog(#"closeDetail");
[self.navigationController popViewControllerAnimated:YES];
}
and voila, Your GadgetBulletinsTVController items details are pushed. You need to do the same steps for the other controllers from where you want to show details.

Answer 2

instead of removing the view from window just reload the basic view which contains all the table views using self.window.rootviewcontroller
EDIT
i got the solution by creating appDelegate what you have to do is just described below
First .h and .m file of AppDelegate Here (MultipleAppDelegate)
in .h add
#property (strong, nonatomic) id<UIApplicationDelegate>delegate;
in .m add
#synthesize delegate;
now where ever you like to add detailView just add below in .h and .m files as described
in .h file here(GadgetBulletinsTVContoller)
#import "MultipleAppDelegate.h"
and in interface one variable like this
MultipleAppDelegate *Mydelegate;
in .m file in viewDidLoad or loadView method
Mydelegate = [[UIApplication sharedApplication]delegate];
then at loading the detailView do this
navigationController = [[UINavigationController alloc] initWithRootViewController:detailController];
Mydelegate.window.rootViewController = navigationController;
[Mydelegate.window makeKeyAndVisible];
now at the detailViewController's .h and .m files
in .h file
#import "MultipleAppDelegate.h"
and in interface
MultipleAppDelegate *appDelegate;
in .m file in viewDidLoad or loadView method
appDelegate = [[UIApplication sharedApplication]delegate];
and on close button click
//Not required
//[self.navigationController popViewControllerAnimated:NO];
appDelegate.viewController = [[MultipleViewController alloc] initWithNibName:#"MultipleViewController" bundle:nil];
appDelegate.window.rootViewController = appDelegate.viewController;
[appDelegate.window makeKeyAndVisible];
That's all it will work fine only problem is that it take's 1 or 2 seconds to navigate and show the multipalViewController
enjoy Coding :)
Happy Coding :)