I have this buttons controller with buttons xib. This buttons is included in my other views. The problem I have is button clicked navigation.
-(IBAction) gotoReport:(id) sender
{ NSLog(#"ll");
ReportStepOne *report = [[ReportStepOne alloc]init];
[self.navigationController pushViewController:report animated:YES];
[report release];
}
I could see the log message, but navigation doesn't work. I guess I should not use self?
appDelegate.H
UINavigationController *navCon;
appDelegate.M
navCon = [[UINavigationController alloc] init];
[navCon setNavigationBarHidden:YES];
Login *login = [[Login alloc] init];
[navCon pushViewController:login animated:NO];
[login release];
[window addSubview:navCon.view];
[self.window makeKeyAndVisible];
Your first example of IBAction is correct, it should pus the view. If it's not pushing, you need to check your XIB to make sure you have connected the correct button to this IBAction.
in your app delegate, do this instead:
Login *login = [[Login alloc] init];
// Make navController a property..
self.navController = [[UINavigationController alloc] initWithRootViewController:login];
//This is the key..
[[self window] setRootViewController:self.navController];
[self.navController setNavigationBarHidden:YES];
[login release];
[self.window makeKeyAndVisible];
Related
Not sure how to title this question, but i'v got such a problem: Up until now i my app runs mainly in one navigationcontroller with table views. But now i'm trying to integrate dropdown settings menu, and can't get it properly done.
The way i'v done now and it works
The changeController is called from one button. ChangeController is in appdelegate.
- (void) ChangeController
{
self.window.backgroundColor = [UIColor blackColor];
DropDownExample *e = [[DropDownExample alloc] initWithStyle:UITableViewStyleGrouped];
self.navigationController = [[UINavigationController alloc] initWithRootViewController:e];
[e release];
[self.window addSubview:self.navigationController.view];
self.window.backgroundColor = [UIColor blackColor];
[self.window makeKeyAndVisible];
}
But this approach has consequances - there is no transition if button is pressed, the settings menu appears instantly, you cannot go back via navigation bar above (nothing there).
So how to do this properly?? I'm new to ios, so just tell me the whole idea how to do this.
Didfinishlaunchingwithoptions method from appdelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease
];
// Override point for customization after application launch.
self.window.backgroundColor = [UIColor whiteColor];
TableViewController *tableVC = [[TableViewController alloc] initWithNibName:#"TableView" bundle:nil andType:CONTROLLER_TYPE_FIRST];
UINavigationController *navC = [[UINavigationController alloc] initWithRootViewController:tableVC];
self.navigationController = navC;
[tableVC release];
[navC release];
self.window.rootViewController = _navigationController;
[self.window makeKeyAndVisible];
return YES;
}
Ok, here's the answer. Write the method changeController in the same class where the Button exists which calls changeController
In the method, write this.
- (void) ChangeController
{
DropDownExample *e = [[DropDownExample alloc] initWithStyle:UITableViewStyleGrouped];
[self.navigationController pushViewController:e animated:YES];
[e release];
}
What you want is to insert new UIViewController on the top of the present Stack. If you would be having a navigation Bar at the top by default then there would be a back Btn by default, which would pop up that controller.
I'm getting a white screen after presenting a modal view controller. This is how I do it:
SomeViewController *controller = [[[SomeViewController alloc] initWithManagedObjectContext:managedObjectContext] autorelease];
UINavigationController *navController = [[[UINavigationController alloc] initWithRootViewController:controller] autorelease];
[navController setModalTransitionStyle:UIModalTransitionStyleCoverVertical];
[self presentModalViewController:navController animated:YES];
The navigation bar works fine, as I set it up in SomeViewController, but the view's contents are not visible, and all I see is the white background color of the root window.
The strange thing is, that this used to work, but now it doesn't for some reason.
What could be the problem?
EDIT:
This is how I create SomeViewController:
- (void)viewDidLoad
{
[super viewDidLoad];
[self setTitle:#"Some View"];
UIBarButtonItem *sortButton = [[[UIBarButtonItem alloc] initWithTitle:#"Sort" style:UIBarButtonItemStylePlain target:self action:#selector(sortButtonClicked:)] autorelease];
[[self navigationItem] setRightBarButtonItems:[NSArray arrayWithObjects:sortButton, [self editButtonItem], nil] animated:YES];
UIBarButtonItem *backButton = [[[UIBarButtonItem alloc] initWithTitle:#"Back" style:UIBarButtonItemStylePlain target:self action:#selector(dismissModalViewControllerAnimated:)] autorelease];
[[self navigationItem] setLeftBarButtonItem:backButton];
// Hack to force landscape orientation
UIViewController *controller = [[UIViewController alloc] init];
[self presentModalViewController:controller animated:NO];
[self dismissModalViewControllerAnimated:NO];
[controller release];
}
- (void)viewDidUnload
{
[super viewDidUnload];
}
- (void) viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return UIInterfaceOrientationIsLandscape(interfaceOrientation);
}
The white screen was caused by the xib file of the controller not being part of the target(its target membership checkbox was unchecked).
Do you happen to have some other init meted also in the SomeViewController class? Please post the whole .m file. If so, you can try to delete the initWithNibName method and check if it shows the content.
EDIT:
Another strange point is the initWithManagedObjectContext method you are using on the viewController instance. Can you explain it?
try
SomeViewController *controller = [[[SomeViewController alloc] init] autorelease];
it should work fine.
I am working on a small app, according to the requirement the app should have a tabBarItem with 3 items. For this I have programmatically created the tabBarController in the AppDelegate.m file and added the 3 different viewControllers, instantiated them and everything is working good. I see the tabBarItems and all views are working. In one of the views lets say in SecondViewController I show a popOverController where I used a UITableView and populate it with items. When I click one of the items it should show another view lets say sendFeedback. Until there everything is working fine, but as soon as this sendFeedback is presented as the modal view, it occupies the whole app i.e it hides the tabBarItem.
I present the important pieces of code here for review:
AppDelegate.m
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
// Override point for customization after application launch.
UIViewController *viewController1 = [[FirstViewController alloc] initWithNibName:#"FirstViewController" bundle:nil];
viewController1.title = #"First";
UIViewController *viewController2 = [[SecondViewController alloc] initWithNibName:#"SecondViewController" bundle:nil];
viewController2.title = #"Second";
UITableViewController *tableView3 = [[tableViewController alloc]initWithNibName:#"tableViewController" bundle:nil];
tableView3.title = #"Third";
self.tabBarController = [[UITabBarController alloc] init];
self.tabBarController.viewControllers = [NSArray arrayWithObjects:viewController1, viewController2, tableView3 ,nil];
self.tabBarController.delegate = self;
self.window.rootViewController = self.tabBarController;
[self.window makeKeyAndVisible];
[viewController1 release];
[viewController2 release];
[tableView3 release];
return YES;
}
In my popOverViewController.m file I am checking which row is selected in the table according to that I present the view
#pragma mark - TableView Delegate Methods
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
sendFeedback *sendEmailViewController = [[sendFeedback alloc]initWithNibName:#"sendFeedback" bundle:nil];
downLoad *downloadFilelViewController = [[downLoad alloc]initWithNibName:#"downLoad" bundle:nil];
if (indexPath.row == 0)
[self presentModalViewController:sendEmailViewController animated:YES];
else
[self presentModalViewController:downloadFilelViewController animated:YES];
}
Can anyone guide me how to overcome this with the multiple views. In case if anyone requires more information from my side I would be glad to provide.
NOTE: It is the same with the other view (downLoad) as well
EDIT: Here is how I am initializing my PopOverController in the AppDelegate.m file
- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController
{
if([viewController isKindOfClass:[SecondViewController class]]){
NSInteger index = [[self tabBarController] selectedIndex];
CGRect buttonFrame = [[[[[self tabBarController] tabBar] subviews] objectAtIndex:index+1] frame];
PopOverViewController *popoverView = [PopOverViewController new];
popoverView.contentSizeForViewInPopover = CGSizeMake(250, 85);
popover = [[UIPopoverController alloc]initWithContentViewController:popoverView];
NSLog(#"X:%f Y:%f",buttonFrame.origin.x,buttonFrame.origin.y);
[popover presentPopoverFromRect:buttonFrame inView:self.tabBarController.tabBar permittedArrowDirections:UIPopoverArrowDirectionDown animated:YES];
}
Thanks
Modal view controllers are used to "block" your application and fulfill a task before you can proceed. So modal view controllers are not what you want to use.
Instead wrap your controllers which have to be shown in the popover in a navigation controller. In the tableView:didSelectRowAtIndexPath: method you can push the corresponding view controller to the navigation stack.
To slove your problem:
At the place where you create the popovercontroller initialize it with a new UINavigationController. And the navigation controller you have to initialize with a rootviewcontroller namely PopOverViewController.m.
PopOverController *popoverContentController = [[PopOverController alloc] init];
UINavigationController *navcon = [[UINavigationController alloc] initWithRootViewController:popoverContentController];
popoverController = [[UIPopoverController alloc] initWithContentViewController:popoverContentController];
And in PopOverController.m
if (indexPath.row == 0)
[self.navigationController pushViewController:sendEmailViewController animated:YES];
else
[self.navigationController pushViewController:downloadFilelViewController animated:YES];
I try to change the modalTransitionStyle property of my modal view. Every style work except for FlipHorizontal. If I choose this, nothing happens.
I have an UINavigationController which should be flipped in.
Heres the code:
UINavigationController *loginNavCon = [[UINavigationController alloc] init];
loginNavCon.navigationBar.barStyle = UIBarStyleBlack;
// push login view
LogInViewController *liVC = [[LogInViewController alloc] initWithStyle:UITableViewStyleGrouped];
[loginNavCon pushViewController:liVC animated:NO];
[liVC release];
// show login view
loginNavCon.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self.window.rootViewController presentModalViewController:loginNavCon animated:YES];
[loginNavCon release];
Thanks for your help.
Ok, I figured it out!
The point is to set it in the pushing UIViewController, not in the pushed one.
So in my example code it has to look like this:
UINavigationController *loginNavCon = [[UINavigationController alloc] init];
loginNavCon.navigationBar.barStyle = UIBarStyleBlack;
// push login view
LogInViewController *liVC = [[LogInViewController alloc] initWithStyle:UITableViewStyleGrouped];
[loginNavCon pushViewController:liVC animated:NO];
[liVC release];
// show login view
/** changed **/
self.window.rootViewController.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
/*************/
[self.window.rootViewController presentModalViewController:loginNavCon animated:YES];
[loginNavCon release];
I created in code UINavigationController, but I want to change style to black translucent
FirstViewController *fvc = [[FirstViewControlelr alloc] init];
UINavigationController *navcon = [[UINavigationController alloc] init];
navcon.navigationController.navigationBar.barStyle = UIBarStyleBlackTranslucent;
[navcon pushViewController:fvc animated:NO];
[self.window addSubview:navcon.view];
[self.window makeKeyAndVisible];
return YES;
But he doesn't change. Help me please!
I suspect it has something to do with the fact that you're accessing a navigation controller's navigation controller. Your navigation controller doesn't live in another navigation controller, so you're setting the bar style of something that isn't there.
You want this:
navcon.navigationBar.barStyle = UIBarStyleBlackTranslucent;
Also you can make a navigation controller and immediately initialize it with a root view controller so you don't have to push it in manually, like this:
FirstViewController *fvc = [[FirstViewController alloc] init];
UINavigationController *navcon = [[UINavigationController alloc] initWithRootViewController:fvc];
[fvc release];
navcon.navigationBar.barStyle = UIBarStyleBlackTranslucent;
[self.window addSubview:navcon.view];
[self.window makeKeyAndVisible];
return YES;
And yes, you forgot to release fvc in your own code.