I have a big problem: on method didSelectRowAtIndexPath I always get null to self.navigationController. I have a UIViewController that contains a UIsegmentedControl and a subView. On this subView I add the controllers for each segment selected. For each segment a have a tableview. Here is the problem: when I select a row from this tableview I can't do push for next controller because self.navigationController is null.
Please help me..Here is my code : http://pastebin.com/qq0vf7mq
without the code :
navigationTelephone=[[UINavigationController alloc] init];
[self.view addSubview:self.navigationTelephone.view];
[self.navigationTelephone setNavigationBarHidden:YES];
[self.view addSubview:tableViewTelephone];
I think You have initialize the UINavigationController like below
[[UINavigationController alloc] initWithRootViewController:ViewControllerOBj]
Updated:
You initialize an instance variable navigationTelephone and display it, but you use self.navigationController to push!
Use [navigationTelephone push...] instead
Try this one:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
myAudiPhoneInputViewController *myViewController = [[myAudiPhoneViewController alloc] initWithNibName:#"NIB NAME HERE" bundile:nil];
self.myaudiPhoneInputViewController = myViewController;
[myViewController release];
[tableViewTelephone deselectRowAtIndexPath:indexPath animated:NO];
if(indexPath.row==0){
NSLog(#"Tel.personnel... %#",self.navigationTelephone);
[self.navigationController pushViewController:self.myaudiPhoneInputViewController animated:YES];
}
}
You haven't instantiate your myaudiPhoneViewController that is why it's not pushing the view.
Just check by changing,
self.navigationTelephone=[[UINavigationController alloc] init];
Naveen Shan
Related
Trying to push new controller into navigationController, Not sure why it is not woking.
1) I checked the instance of secondViewController also does not work.
2). tried suffixing '.xib", also not working.
3) Tried bundle:nil also not working.
I am using ARC. Can someone point out what is the issue here ?
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSLog(#" YOU SELECTED ROW ..");
secondViewController *secController = [[secondViewController alloc] initWithNibName:#"secondViewController.xib" bundle:[NSBundle mainBundle]];
NSLog (#"View Controller %# ", secController);
[self.navigationController pushViewController:secController animated:YES];
}
I edit your code just try this.
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSLog(#" YOU SELECTED ROW ..");
secondViewController *secController = [[secondViewController alloc] initWithNibName:#"secondViewController" bundle:nil];
NSLog (#"View Controller %# ", secController);
[self.navigationController pushViewController:secController animated:YES];
}
You don't need to pass the bundle in if the nib is located in the main bundle. Passing in nil will work, so change this:
[[secondViewController alloc] initWithNibName:#"secondViewController.xib" bundle:[NSBundle mainBundle]];
To this:
[[secondViewController alloc] initWithNibName:#"secondViewController" bundle:nil];
You can also take advantage of the fact that UIKit will look for a nib with the same name as the class and pass nil in for the nib name.
Do you intailize navigation controller? Check self.NaviagationController is it in memory ? May be 0*0
I have a primarly code based iphone sample app that works. It is Navigation based app. This sample app code comes with a RootViewController (.h and .m). I am trying to import another
#import "TopView.h"
...
#pragma mark UITableViewDelegate methods
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
UIViewController *viewController;
TopView *TopViewController;
switch (indexPath.row) {
case PDF:
viewController = [[[PDFExampleViewController alloc] init] autorelease];
[self.navigationController pushViewController:viewController animated:YES];
break;
case TopView:
tableviewController = [[[TopView alloc] init] autorelease];
[self.navigationController pushViewController:viewController animated:YES];
break;
default:
viewController = [[[UIViewController alloc] init] autorelease];
[self.navigationController pushViewController:viewController animated:YES];
}
}
I am getting SigAlerts. I am trying to import the following simple TableView Xib based sample code.
http://www.icodeblog.com/2008/08/08/iphone-programming-tutorial-populating-uitableview-with-an-nsarray/
Above UITableView based one works by itself. My head spinning trying to debug the SigAlerts and setter errors. Any help on importing above UITableView into the main app would be greatly appreciated.
What is TopView? Is this a UIViewController? If so please change the name as it is misleading. From the name it looks like a UIView subclass
If this is not a UIViewcontroller, you cannot push it like the following. A UIView cannot be pushed on to a UINAvigationController.
case TopView:
tableviewController = [[[TopView alloc] init] autorelease];
[self.navigationController pushViewController:viewController animated:YES];
Also what are the values of these which you are using in the Switch-Case
PDF
TopView
In addition there is a typo?
tableviewController //supposed to be topViewController??
Another one, from next time onwards name your instance variables starting with small letter
i.e topViewController and NOT TopViewController
The other day I asked about using a UINavigationController as a child of a UIViewController. I got that working via the answer. Now what I'm trying to do is push a controller onto the nav stack. When a table cell is touched, I do the following:
- (void) showSetup {
NSLog(#"Showing Setup");
SetupViewController *controller = [[SetupViewController alloc]initWithNibName:#"SetupViewController" bundle:nil];
self.setupViewController = controller;
self.setupViewController.title = #"Setup";
[self.navigationController pushViewController:self.setupViewController animated:YES];
[controller release];
}
I can see the log statement in my console, but the view never changes. Am I missing something?
Hmmm, well it's a bit tricky without knowing the details of your implementation -- I assumed that you implemented your navigation controller as in the linked article. Also although you give no details it sounds like you've added a table view controller somewhere along the line, so I made the UIViewController conform to the UITableView protocols to handle everything in one place:
#interface SOViewController : UIViewController<UITableViewDelegate,UITableViewDataSource > {
UINavigationController* navController;
}
- (IBAction) pushMe:(id)sender;
#end
I dropped a button on the SOViewController's view in IB and wired the pushMe: action to it. I also created another UIViewController-based class called JunkController and dropped a "Junk" label on it's view in IB -- that's all I did in IB. In the SOViewController's viewDidLoad:
navController = [[[UINavigationController alloc] init] retain];
navController.navigationBar.barStyle = UIBarStyleBlackOpaque;
navController.toolbarHidden = YES;
UITableViewController* tvController = [[UITableViewController alloc] init];
UITableView* tv = [[UITableView alloc] init];
tvController.tableView = tv;
tv.delegate = self;
tv.dataSource = self;
[navController setViewControllers:[NSArray arrayWithObject:tvController]];
In the pushMe: action implementation:
[self presentModalViewController:navController animated:YES];
Implemented the tableView delegate and datasource methods; for selection:
- (void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
NSLog(#"row selected");
JunkController* junk = [[JunkController alloc] initWithNibName:#"junkcontroller" bundle:nil];
[navController pushViewController:junk animated:YES];
[junk release];
}
This should yield an app that surfaces a screen with a "Push me" button. When that button is pressed you should get an animated modal navigation-based table view -- mine had one row in it that contained a label "select me". Touching this row should animate the junk controller into view.
There is no need to make setupViewController a declared property in this view controller. Also, I could be mistaken but I thought "controller" was a reserved name in Cocoa, I'd change that name. So make sure you have registered with the UITableViewDelegate and use - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath to hook into and push your new view controller as follows:
SetupViewController *detailViewController = [[SetupViewController alloc] initWithNibName:#"SetupViewController" bundle:nil];
detailViewController.title = #"Setup";
[self.navigationController pushViewController:detailViewController animated:YES];
[detailViewController release];
Goodluck!
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
So I am trying to simple traverse to the next level of a table view by doing this:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if (indexPath.row == 1) {
FiltersController *aFiltersCont = [[FiltersController alloc] init];
aFiltersCont.displayedFilters = [appDelegate.groupedBusiness allKeys];
aFiltersCont.currentLevel = self.currentLevel + 1;
[self.navigationController pushViewController:self animated:YES];
}
}
is there any reason why this would not be pushing the controller? I had a similar problem before, but solved it by displaying the view modally. However, this time, this is in a popover and needs to slide to the next screen inside that popover. Any Ideas? Thanks in advance.
OK I am going to put some more source up here to try and help...
Inside the main view controller I have this code to make the popover from a button:
// Create and configure the filters controller.
FiltersController *aFiltersController = [[FiltersController alloc] initWithStyle:UITableViewStylePlain];
self.filtersController = aFiltersController;
filtersController.appDelegate = self.appDelegate;
UINavigationController *filtersNavController = [[UINavigationController alloc] initWithRootViewController:filtersController];
UIPopoverController *filtersPopover = [[UIPopoverController alloc] initWithContentViewController:filtersNavController];
self.filtersPopoverController = filtersPopover;
filtersPopoverController.delegate = self;
and then I have the code I first posted in my filtersController class. Does that help at all?
[self.navigationController pushViewController:self animated:YES];
Should be
[self.navigationController pushViewController:aFiltersCont animated:YES];
If you are just displaying your sublcass of UITableViewController inside a UIPopoverController, the UINavigationController will not be created for you automatically. You may need to modify the code where you are creating the UIPopoverController with something like this:
MyTableViewController *table = [[[MYTableViewController alloc] init] autorelease];
UINavigationController *nav = [[[UINavigationController alloc] initWithRootViewController:table] autorelease];
myPopover = [[UIPopoverController alloc] initWithContentViewController:nav];
Then you should be able to push and pop navigation controllers on the stack no problem.
you are pushing self which is a reference to the current view controller. you should change the line with the push to the following if aFiltersCont is the viewController you are trying to drill to.
[self.navigationController pushViewController:aFiltersCont animated:YES];
You might be confused about the index. The first index is 0 not 1, so maybe you want indexPath.row == 0?
Also, you should release aFiltersCont before returning (you're leaking a FiltersController and anything it owns every time you run this method.
So maybe this?
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if (indexPath.row == 0) {
FiltersController *aFiltersCont = [[[FiltersController alloc] init] autorelease];
aFiltersCont.displayedFilters = [appDelegate.groupedBusiness allKeys];
aFiltersCont.currentLevel = self.currentLevel + 1;
[self.navigationController pushViewController:aFiltersCont animated:YES];
}
}