this is a newbie question.i ve created a grouped tableview .on clicking the tableview cell it navigates to a new view.but i m unable to create a back button.I even added a navigation bar in the second view of the nib file.but its of no effect..could you guys help me out..below is the screenshot and code of the first view
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
// Navigation logic may go here. Create and push another view controller.
if (indexPath.row==0) {
self.dvController1 = [[FirstView alloc] initWithNibName:#"FirstView" bundle:[NSBundle mainBundle]];
[self.navigationController pushViewController:dvController1 animated:YES];
}
if (indexPath.row==1) {
self.dvController2 = [[Tab4 alloc] initWithNibName:#"Tab4" bundle:[NSBundle mainBundle]];
[self.navigationController pushViewController:dvController2 animated:YES];
}
}
In the presented controller add a button with an IBAction in it:
- (IBAction)back:(id)sender {
[self.navigationController popViewControllerAnimated:YES];
}
And make sure that you have a navigationController indeed (meaning that your application needs to be navigation oriented, meaning that you need to instantiate the navigationController property in the application delegate)
In your second view .put this code in viewDidLoad method
self.navigationItem.leftBarButtonItem.title = #"Back";
just hide the bar in the viewWillAppear method & unhide the bar in viewWillDisAppear methods of the tableViewController class. By using
self.navigationController.navigationBarHidden = YES/NO;
Related
I followed this great tutorial on a slide out menu using UIKit Dynamics, Slide Out Menu. The code has been slightly modified to reduce duplication of code. I'm handling the touch event in the MenuComponent Class. Now, I'm trying to move to another view controller when the item is selected. The menu is created in code so I can't use segue's.
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
[[tableView cellForRowAtIndexPath:indexPath] setSelected:NO];
[self toggleMenu];
self.isMenuShown = NO;
if(indexPath.row == 0){
//move to the testViewController
}
How do you remove the current view and present a new one? My hierarchy is a navigation controller then my testViewController.
Edit: I did find this code which I tried, but my problem is the when the menu is present and I try to present the view I get an error:
testViewController *test = (testViewController*)[storyboard instantiateViewControllerWithIdentifier:#"testViewController"];
[self presentViewController:test animated:YES completion:nil];
Warning: Attempt to present <testViewController: 0x7c095470> on <MenuComponent: 0x7ae4ce50> whose view is not in the window hierarchy!
I was able to figure it out by creating a delegate for the MenuComponent and then pass the view like so:
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
UIViewController * test = [storyboard instantiateViewControllerWithIdentifier:#"test"] ;
[delegate didCallViewController:test];
I'm performing a segue with a navigation bar over a view that has the navigation bar hidden, when the segue starts my current view seems to get pushed down by the navigation bar that is not hidden in my segue… which looks bad…
If I remove the setNavigationBarHidden:animated method I don't see a navigation bar after performing the segue, and the issue doesn't manifest anymore.
- (void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[self.navigationController setNavigationBarHidden:NO animated:YES];
if (indexPath.row == 0) {
[self performSegueWithIdentifier:#"mailSignUp" sender:nil];
} else if (indexPath.row == 1) {
[self performSegueWithIdentifier:#"logIn" sender:nil];
}
}
If you want to hide your navigation bar you have to do it in the root controller, the first controller in your app.
My guess is that you have had setup a modal segue in interface builder from a certain button to the following view. By doing so you have the following view sliding in from down to top.
I'm also guessing you are using the lastest xcode version [4.5.2] and running it on ios6.
Try deleting your segue from interface builder. Also, instead of your:
[self performSegueWithIdentifier:#"mailSignUp" sender:nil];
use:
UIStoryboard *storyBoard = [UIStoryboard storyboardWithName:#"MainStoryboard" bundle:nil];
YourSecondController *secondController = (YourSecondController *)[storyBoard instantiateViewControllerWithIdentifier:#"YourSecondController"];
[self.navigationController pushViewController:yourSecondController animated:YES];
[substitue YourSecondController with mailSignUp or whatever controller you want to perform segue to]
Also, if you want to hide your navigation bar you have to add this line of code in your (void)viewdidload method in your root controller.
If you run your segue programmatically like this, you should achieve your second view slide from right to left. Let me know if this helped or provide more info if it is not sufficient or exact.
My main menu (a ViewController) is embedded in a NavigationController that I added in the storyboard in Xcode4.
I have a button in my menu, displaying a new view. To display it I use :
- (IBAction) display : (id) sender
{
if(!anotherView) anotherView = [[AnotherView alloc] initWithNibName:#"AnotherView" bundle:nil];
[self presentModalViewController:anotherView animated:NO];
}
My other view is correctly displayed with all its objects and elements. Excluding my NavigationController's bar, that doesn't appear. Why ?
Thanks for your advices
You are presenting the view modally what you probably meant was
[self.navigationController pushViewController:anotherView animated:YES]
of course what you really want to do is not mix and match storyboard and non storyboard flows unnecessarily like this and have the storyboard do this for you
you are presenting your viewController modally. If you want to use the navigation controller you have to push your view onto the navigation stack.
replace
[self presentModalViewController:anotherView animated:NO];
with
[self.navigationController pushViewController:anotherViewController animated:YES];
You can still present your view modally without losing the navigation bar. Try this code:
AnotherView *tempAnotherView = [[AnotherView alloc] initWithNibName:#"AnotherView" bundle:nil];
[self setAnotherView:tempAnotherView];
[tempAnotherView release];
UINavigationController *navController = [[[UINavigationController alloc] initWithRootViewController:self.anotherView] autorelease];
[self.navigationController presentModalViewController:navController animated:YES];
Hope it helps! :)
I'm new to using the split view for creating iPad applications. When I first create the project just using the standard MasterDetail Application template (Xcode 4.2), it creates a MasterViewController and a DetailViewController. The template has the following method that is called when a row is selected from the popover table (master detail view controller):
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
if (!self.detailViewController)
{
self.detailViewController = [[DetailViewController alloc] initWithNibName:#"DetailViewController" bundle:nil];
}
[self.navigationController pushViewController:self.detailViewController animated:YES];
Now I understand when you are using a regular navigation controller if you are programing for an iPhone you just do this type of thing to push on another view controller on to the stack. However, with this template, it just pushes the detail view onto the popover rather than updating what is already present. I'm confused as what I need to update to select something from the pop over (master detail view), and then have the detailView update.
Update:
To try and test out the "detailItem" that is already setup for you in the DetailViewController, I commented out the pushViewController and added the following:
//[self.navigationController pushViewController:self.detailViewController animated:YES];
self.detailViewController.detailItem = #"Test";
// setter in detailViewController
- (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.
// detailDescriptionLabel.text is a IBOutlet to the label on the detailView
if (self.detailItem) {
self.detailDescriptionLabel.text = [self.detailItem description];
}
}
According to this code, the text of the label on the detailViewController should be updated. However, when I do click on the item in the master view controller table, nothing happens.
There are a couple different ways you could do it. First off, like you said, remove the pushViewController call (I don't know why Apple's template does this... maybe just to show you you can?).
Next, let your MasterViewController know about the DetailViewController that is already displayed. I usually set master.detailViewController = detailViewController in the appDelegate.
Remember, the DetailViewController is already being displayed, so you won't always need to realloc it (unless you are replacing it with some other view)
First Option
Use delegate calls to set the information. Declare a protocol to pass information to the detailView and have it display it appropriately. Here is a tutorial describing this in more detail.
Second Option
Pass DetailViewController some data & override the setter to refresh the detailView. Here is a tutorial describing this in more detail.
// in DetailViewController
- (void)setDetailItem:(id)newDetailItem {
if (detailItem != newDetailItem) {
[detailItem release];
detailItem = [newDetailItem retain];
// Update the view.
navigationBar.topItem.title = detailItem;
NSString * imageName = [NSString stringWithFormat:#"%#.png",detailItem];
[self.fruitImageView setImage:[UIImage imageNamed:imageName]];
}
}
Edit: Just looked at the template again, and setDetailItem type code is already in there, but the code is creating a completely new detailView so the detailView that is viewable on the splitViewController is not changed at all.
In my UISplitViewController application, I have
RootViewController - view controller in the left pane.
DetailViewController - view controller in the right pane.
When one item (which is in a UITableView) in RootViewController is tapped, new view controller will be set as the following shows:
[detailViewController setViewControllers:[NSArray arrayWithObjects:newViewController, nil] animated:animated];
//detailPane is my DetailViewController
All works pretty well in landscape mode. However, I can't make the UISplitViewController work as what I want in portrait mode, that is, the RootViewController's popover button does not appear appropriately in my DetailViewController when I launch and use the application in portait mode.
When I launch the app in portrait mode, the popover button appears appropriately. But after tapping one item in the popover and a new view controller has been set on detailViewController, the button disappeared. I have to rotate the device to landscape and then back to portrait again to make the button appear again.
I set my UISplitViewController's delegate in my application's AppDelegate as follows:
self.splitViewController.delegate = self.detailViewController
And here is my UISplitViewControllerDelegate implementation
- (void)splitViewController: (UISplitViewController*)svc willHideViewController:(UIViewController *)aViewController withBarButtonItem:(UIBarButtonItem*)barButtonItem forPopoverController: (UIPopoverController*)pc {
NSLog(#"Will hide view controller");
barButtonItem.title = #"Menu";
[self.navigationItem setLeftBarButtonItem:barButtonItem];
self.popoverController = pc;
}
- (void)splitViewController: (UISplitViewController*)svc willShowViewController:(UIViewController *)aViewController invalidatingBarButtonItem:(UIBarButtonItem *)barButtonItem {
NSLog(#"Will show view controller")
NSMutableArray *items = [self.navigationItem.leftBarButtonItems mutableCopy];
[items removeAllObjects];
[self.navigationItem setLeftBarButtonItems:items animated:YES];
[items release];
self.popoverController = nil;
}
Any hint or help is greatly appreciated.
Thanks.
Just came up with a new solution.
Subclass UINavigationController and implement UISplitViewControllerDelegate. Set an instance of this class as the right ViewController of the splitViewController. Everytime you want to change the detail view controller from the master
NewDetailViewController *newDetailVC = ....// Obtain the new detail VC
newDetailVC.navigationItem.leftBarButtonItem = [[[[self.splitViewController.viewControllers objectAtIndex:1]topViewController]navigationItem ]leftBarButtonItem]; //With this you tet a pointer to the button from the first detail VC but from the new detail VC
[[self.navigationController.splitViewController.viewControllers objectAtIndex:1]setViewControllers:[NSArray arrayWithObject:newDetailVC]]; //Now you set the new detail VC as the only VC in the array of VCs of the subclassed navigation controller which is the right VC of the split view Controller
This works for me and I can avoid defining a hole protocol and setting the master as the delegate, which is a big trade off. Hope it helps.
If you still need it:
http://developer.apple.com/library/ios/#samplecode/MultipleDetailViews/Introduction/Intro.html
What I did to my source (I had similar setup to you) to fix it:
I have the master viewcontroller (UITableViewController in my case) be the delegate of the UISplitViewController. In the two delegate methods for UISplitViewControllers (so this would be in your master viewcontroller implementation) you would save the popupviewcontroller and the barbuttonitem in your class. Now, if you change your details viewcontroller, you do:
self.viewControllers = [NSArray arrayWithObjects:[self.viewControllers objectAtIndex:0], newDetailsViewController, nil];
UIViewController <SubstitutableDetailViewController>*vc = (UIViewController <SubstitutableDetailViewController>*)newDetailsViewController;
[vc invalidateRootPopoverButtonItem:_tableViewController.rootPopoverButtonItem];
[_createReportViewController showRootPopoverButtonItem:_tableViewController.rootPopoverButtonItem];
where we have
#protocol SubstitutableDetailViewController
- (void)showRootPopoverButtonItem:(UIBarButtonItem *)barButtonItem;
- (void)invalidateRootPopoverButtonItem:(UIBarButtonItem *)barButtonItem;
#end
the delegate that each of your detailsViewControllers should adhere to. You would implement like this:
- (void)showRootPopoverButtonItem:(UIBarButtonItem *)barButtonItem {
self.navigationItem.leftBarButtonItem = barButtonItem;
}
- (void)invalidateRootPopoverButtonItem:(UIBarButtonItem *)barButtonItem {
self.navigationItem.leftBarButtonItem = nil;
}
Let me know if this helps you.
I liked Nekto's solution, but it misses one key problem.
It's not clear what action: selector will cause the UISplitViewController to show the MasterViewController in a popover. When I finally figured this out, by examining the BarButtonItem in the debugger, I realized why it was so tricky to figure this out: the action: selector isn't documented anywhere in Apple's iOS SDK. Oops.
Try this:
UIBarButtonItem *showListView = [[UIBarButtonItem alloc] initWithTitle:#"List" style:UIBarButtonItemStyleBordered target:[self splitViewController] action:#selector(toggleMasterVisible:)];
[[detailViewController navigationItem] setLeftBarButtonItem:showListView];
You may want to surround this code with a conditional that checks the window is in in portrait mode, such as if ([self interfaceOrientation] == UIInterfaceOrientationPortrait)
When you are setting new view controllers placed on navigation stack, probably, all navigation buttons are reset. You can manually add appropriate buttons after changing navigation stack.
For example, you can pick code from - (void)splitViewController: (UISplitViewController*)svc willHideViewController:(UIViewController *)aViewController withBarButtonItem:(UIBarButtonItem*)barButtonItem forPopoverController: (UIPopoverController*)pc where default popover controller button is created:
UIBarButtonItem *item = [[UIBarButtonItem alloc] initWithTitle:#"Menu" style:UIBarButtonItemStyleBordered target:self action:#selector(appropriateSelector)];
[self.navigationItem setLeftBarButtonItem:barButtonItem];
self.popoverController = pc;