I have app with UITabBarController. First tab has UINavigationController and it is UITableViewController. I mean I have tabs at the bottom and in first tab I have a table with possibility to navigate to other views. After touching one of cells I call view with MKMapView
if([indexPath section] == 3){
LocationDetailViewController *dvController = [[LocationDetailViewController alloc] initWithNibName:#"LocationDetailView" bundle:[NSBundle mainBundle]];
dvController.locationGPS = self.locationGPS;
[self.navigationController pushViewController:dvController animated:YES];
LocationDetailViewController is defined like
#interface LocationDetailViewController : UIViewController <MKMapViewDelegate>
in it I have a toolbar with button with action:
- (void)myCurrentAddress:(id)sender {
AddressDetailViewController *dvController = [[AddressDetailViewController alloc] initWithNibName:#"AddressDetailView" bundle:[NSBundle mainBundle]];
[self.navigationController pushViewController:dvController animated:YES]; }
AddressDetailViewController is defined like:
#interface AddressDetailViewController : UIViewController
When I try to use code:
- (void)myBackAction {
[self.navigationController popViewControllerAnimated:YES]; }
it doesn't do anything. Debugger stops on this line - and then continues with no warnings or errors - but no changes on screen. If i remove my own back button and standard back button will be generated it will navigate back NavigationBar but not the view.
Also if I navigate to AddressDetailViewController from another tableviewcontroller class then eveyrhing is ok, where you should look into to find out the problem? please help ))
stupid me i had
- (void)viewWillDisappear:(BOOL)animated {
[self.navigationController popViewControllerAnimated:NO];
in LocationDetailViewController - after removing it everything is ok, sorry )
Related
I am developing an e-com app for iPhone in which i need to open a view immediately when the user clicks on a button for the upcoming view, the data loads large images from server , to load images I am using a background thread .
Thank You
Simple, here's how to create a UIViewController and present it from within an IBAction.
- (IBAction)goToNextView:(id)sender
{
//if you are using xibs use this line
UIViewController *controller = [[UIViewController alloc] initWithNibName:#"myXib" bundle:[NSBundle mainBundle]];
//if you are using storyboards use this line
UIViewController *controller = [self.storyboard instantiateViewControllerWithIdentifier:#"myViewControllersID"];
//to present the controller modally use this
[self presentViewController:controller animated:NO completion:nil];
//or if you are pushing to this controller using a navigation controller use this
[self.navigationController pushViewController:controller animated:NO];
}
Be sure to pass animated NO so that the view is displayed immediately.
You need to make a button and then add its action like
-(IBAction)ButtonAction:(id)sender{
CalController *calculateView=[[CalController alloc] initWithNibName:#"CalController" bundle:nil];
[self.navigationController presentModalViewController:calculateView animated:NO];
}
You can use modal view controller for this
- (IBAction)showController:(id)sender {
SampleViewController *sampleView = [[SampleViewController alloc] init];
[self presentModalViewController:sampleView animated:YES];
}
Here it is the tutorial http://timneill.net/2010/09/modal-view-controller-example-part-1/
I'm building an iPhone app, with the following structure:
I have the MainViewController which consists of 2 views (like split screen).
The first view of them, has a button. On tap, a UItableView (ResultTableViewController) appears in the second (of the above) view:
-(IBAction)buttonTapped:(id)sender {
if ([(UIButton *)sender tag] == 0) {
ResultsTableViewController *childViewController = [[ResultsTableViewController alloc] init];
childViewController.tableView.delegate = self.results;
[self.results.view addSubview:childViewController.tableView];
}
}
So I have a UItableView as a sub-view of a UIView.
The problem is that pushViewController() in didSelectRowAtIndexPath() of ResultTableViewController does not work (self.navigationController is nil).
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
DetailsViewController *detailView = [[DetailsViewController alloc] initWithNibName:#"DetailsViewController" bundle:[NSBundle mainBundle]];
[self.navigationController pushViewController:self.detailView animated:YES];
}
I have tried many of the solutions I found, but nothing works.
In my MainWindow.xib, I have only MainViewController added, is that the problem?
Thanks in advance!
You are adding the view of the child controller to your controller's view, not pushing the child controller onto your navigation stack. Due to that, your child controller's navigation controller will be nil, since it wasn't put into the navigation controller.
Is this what you're going for?
-(IBAction)buttonTapped:(id)sender {
if ([(UIButton *)sender tag] == 0) {
ResultsTableViewController *childViewController = [[ResultsTableViewController alloc] init];
childViewController.tableView.delegate = self.results;
[self.navigationController pushViewController:childViewController animated:YES];
}
}
[self.navigationController pushViewController:self.detailView animated:YES];
above line of code will push the detailview on navigationcontroller stack. Check whethere your tableviewcontroller is on that stack ?
Ok, I found it.
I had to declare my MainViewController as UINavigationControllerDelegate and create a secondary NavigationController in it. I push the viewController in my new navigationController and that's it.
I have an App with one MainWindow.xib file. Then I have ViewControllerA.xib and ViewControllerB.xib. My MainWindow.xib have one ViewController that points two ViewControllerA.xib.
On ViewControllerA I have a button and I would like the button, when pressed, to move ViewControllerB onto the screen. How do I do that?
I tried this code, but I think I am missing something:
- (IBAction)btMyButton:(id)sender
{
ViewControllerB * viewController = [[ViewControllerB alloc] initWithNibName:#"ViewControllerB" bundle:nil];
[[UIApplication sharedApplication].keyWindow addSubview:viewController.view];
[self.navigationController pushViewController:viewController animated:YES];
}
My ViewControllerB does appear, but it is squashed at the top of the screen, over the previous view. Any help is greatly appreciated.
Thank you
Remove the second line:
[[UIApplication sharedApplication].keyWindow addSubview:viewController.view];
You are adding the view twice. The 2nd and 3rd lines both cause the view to be added to the view hierarchy in different places.
--update--
If you remove the 2nd line and are not seeing your view then self.navigationController is most likely nil. Try [self presentModalViewController:] instead.
Make sure that the view of controller B has correct hight you should subtract the navigation bar height 44 px and status bar 20 px as well. Those values are for iPhone.
- (IBAction)btMyButton:(id)sender
{
//you should load from the main app bundle
ViewControllerB * viewController = [[ViewControllerB alloc] initWithNibName:#"ViewControllerB" bundle:[NSBundle mainBundle]];
// you don't need the following line
//[[UIApplication sharedApplication].keyWindow addSubview:viewController.view];
[self.navigationController pushViewController:viewController animated:YES];
[viewController release];
}
Update
As the above comment says if you may don't have a navigation controller to push Controller B into. So Add a navigation controller into the main window instead of the view controller and make its root view controller you Controller A.
I hope this helps you,
you will need to remove old viewcontroller from main windows.
- (IBAction)btMyButton:(id)sender
{
//Assuming you declare two Iboutlet controllerA, controllerB mapping with that view as class variable
{
if (self.controllerB == nil)
{
ViewControllerB * viewController = [[ViewControllerB alloc] initWithNibName:#"ViewControllerB" bundle:nil];
self.controllerB = viewController;
[viewController release];
}
[controllerA.view removeFromSuperview];
[self.view insertSubview:controllerB.view atIndex:0];
}
}
I am having problems with getting a detail view to load using pushViewController. At first, I thought pushViewController was not working. BUT, then I tried using a different view controller and it worked. I can tell from tracing that the problem view controller is never loaded at all. In other words, I tried to eliminate the possibility that there was some error in the view controller by NSLoging in that object and I never see anything.
Does anyone have any ideas?
- (void)tableView:(UITableView *)tableView
didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
/*
NSLog(#"hsitkjsdfkljlkd");
if (childController == nil)
childController = [[salesViewController alloc] initWithNibName:#"salesView" bundle:nil];
//NSUInteger row = [indexPath row];
[self.navigationController pushViewController:childController
animated:YES];
*/
/*
//modal = blocking
salesViewController *otherVC = [[salesViewController alloc] initWithNibName:#"salesView" bundle:nil];
//must set sale type
otherVC.strSaleType = #"Voice";
[self presentModalViewController: otherVC animated:YES];
//No close. By design, it is up to the otherVC to close itself
*/
//tipCalcViewController *detailViewController = [[tipCalcViewController alloc] initWithNibName:#"tipCalcView" bundle:nil];
salesViewController *detailViewController = [[salesViewController alloc] initWithNibName:#"salesView" bundle:nil];
// ...
// Pass the selected object to the new view controller.
[self.navigationController pushViewController:detailViewController animated:YES];
[detailViewController release];
}
Just Check the
- (void)viewWillAppear:(BOOL)animated
{
}
of the salesViewController.
you are doing something wrong in this..
put the debugging point in the viewWillAppear and run it. you can get the error line..
just try it......Surely it will work for u...
salesViewController *detailViewController = [[salesViewController alloc] initWithNibName:#"salesViewController" bundle:nil];
// Pass the selected object to the new view controller.
[self.navigationController pushViewController:detailViewController animated:YES];
[detailViewController release];
Also make sure you are giving the IBOutlet connection to UIView.
In my case I had several IBOutlets that I removed from the Header file and forgot to remove the connection to these non-existing outlets in Interface Builder. So removing the obsolete outlets fixed the problem in my case.
When you're pushing from ViewController1 to ViewController2 then the code will be used like this so try this code,
ViewController2 *vw2=[[ViewController2 alloc]initWithNibName:#"ViewController2" bundle:nil];
[self.navigationController pushViewController:vw2 animated:YES];
The Above code may be written on Click event of button or on didSelect delegate of UITableView
here's my code:
ViewController *vc = [[ViewController alloc] initWithNibName:#"TableView" bundle:nil];
[self.navigationController presentModalViewController:vc animated:YES];
//[self setView:[vc view]];
If I call it, nothing happens. However, if I change it to:
ViewController *vc = [[ViewController alloc] initWithNibName:#"TableView" bundle:nil];
//[self.navigationController presentModalViewController:vc animated:YES];
[self setView:[vc view]];
The view appears just fine (without the transition, of course).
What am I doing wrong? Is there anything special you have to take care of when initializing the view controller? I tried to copy as much as possible from Apple's examples, but I can't get this to work...
Thanks for any input!
-- Ry
You can only present modal view controllers from controllers that have already been shown onscreen (usually through a UINavigationController or UITabBarController). Try creating a UINavigationController, pushing a viewController to it, and then presenting your modal controller. There's a starter project in Xcode that shows how to create a UINavigationController-based flow if you're unfamiliar with it.
One other thing to note: if you haven't pushed the view controller onto a UINavigationController, the .navigationController property will be nil, and messaging it will have no effect.
I encountered the same problem while attempting to show a modal view over another modal view. Ben's answer is correct, and can be implemented like so:
#interface FirstView: UIViewController {
UIViewController *firstView;
}
- (IBAction)showOptionsView:(id)sender;
#end
In the main view class:
- (void)viewDidLoad {
[super viewDidLoad];
firstView = [[UIViewController alloc]init];
[firstView setView:self.view];
[firstView setModalTransitionStyle:UIModalTransitionStyleCoverVertical];
}
- (IBAction)showOptionsView:(id)sender {
OptionsView *optView = [[OptionsView alloc]initWithNibName:#"OptionsView" bundle:nil];
if(firstView != nil) {
[firstView presentModalViewController:optView animated:YES];
[optView release];
}