iv created a class with xib so i can access it throughout my app. The class basically holds a nib with has three uiviews and a few buttons buttons+labels. Now im calling class A (the one with 3 view etc) from classB but every time i addsubview to self.view nothing happens. any help appreciated.
ive done the following in class B.h
#import "PlayResultViewController.h"
PlayResultViewController *playResultViewController;
in classB.m
//viewdidload
playResultViewController = [[PlayResultViewController alloc]init];
//some random method
[placeholderView addSubview:playResultViewController.loseView];
You are missing the initWithNibName to start with, here are some examples
With a Navigation controller u can use
BViewController *bController = [[BViewController alloc] initWithNibName:#"BViewController" bundle:nil];
[self.navigationController pushViewController:bController animated:YES];
[bController release];
without UInavigation controller you can test with
BViewController *bController = [[BViewController alloc] initWithNibName:#"BViewController" bundle:nil];
self.view = bController;
// or alternatively self.view = bController.view;
[bController release];
You need to tell it which nib to load....
playResultViewController = [[PlayResultViewController alloc] initWithNibName:#"Mynib" bundle:nil];
Related
I don't know if what I'm trying to do is possible, but because I haven't the desired results, I guess not.
What I'm trying and need to do is to call a SplitViewController from a previous ViewController, using presentViewController.
I know, SplitViewController have to be the rootViewController, but I need to explore the most possible options to achieve what I need to do.
I have a MainMenu with buttons, and with every button, I need to call a SplitViewController. First, how can do this?
What I'm trying to do is this:
First, in AppDelegate I'm calling the MainMenu, and add as a subview and other things:
-(BOOL)application:(UIApplication*)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
[window addSubview:self.mainMenu.view];
[self.mainMenu presentModalViewController:self.firstMenu animated:NO];
[self.window makeKeyAndVisible];
return YES;
}
Then, in the MainMenu, I'm calling SecondViewController, in modal view, using this code:
SecondViewController *secV = [[SecondViewController alloc]initWithNibName:#"SecondViewController" bundle:nil];
secV.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:secV animated:YES];
In this SecondViewController, I'm creating SplitViewController, with Master & DetailViewController's, using this code:
-(void)viewDidLoad{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
UISplitViewController *splitViewController = [[UISplitViewController alloc]init];
SecondMenuViewController *secMenu = [[SecondMenuViewController alloc]init];
UINavigationController *navLef = [[UINavigationController alloc]init];
[navLef pushViewController:secMenu animated:NO];
SecondMainViewController *secMain = [[SecondMainViewController alloc]init];
UINavigationController *navRig = [[UINavigationController alloc]init];
[navRig pushViewController:secMain animated:NO];
splitViewController.delegate = secMain;
splitViewController.viewControllers = [NSArray arrayWithObjects:navLef, navRig, nil];
MainAppDelegate *mainApp = [[MainAppDelegate alloc]init];
[mainApp changeRootViewController:splitViewController];
navRig = nil;
navLef = nil;
secMain = nil;
secMenu = nil;
splitViewController = nil;
}
As you can see, I'm calling a method in MainAppDelegate, to change view and RootViewController, because SplitViewController have to be RootViewController. This is the method:
-(void)changeRootViewController:(UISplitViewController *)splitViewController{
[self.window addSubview:splitViewController.view];
self.window.rootViewController = splitViewController;
}
I know, this looks like a mess. And when I run, the SplitViewController never shows, so I assume, what I'm trying to do is not possible? Or In what I'm wrong?
If it is everything, what can I do to show a SplitViewController after my MainViewController?
I'm using XCode4.4 and iOS5
Thank you very much
A better way would be to make your UISplitViewController the root view controller in application:didFinishLaunchingWithOptions:. Then present your MainMenu on top of it. You can change the subviews displayed by the split view controller to correspond to what button the user pushes in your MainMenu.
First, didFinishLaunchingWithOptions: is too early to be calling presentModalViewController. You haven't even got an interface yet!
Second, you don't seem to have a root view controller (although perhaps you're getting one from a nib? you should probably stop doing that; use the techniques shown in the current application templates).
Third, note that now that we have custom container views, there is no need for you to use UISplitViewController at all; you can construct your own view / view controller hierarchy, and you might be happier doing so, since UISplitViewController is not a very well-constructed class.
I want programatically switch from one view controller to another. I use the following code :
SenderPlayerViewController *myViewController = [[SenderPlayerViewController alloc] init];
[self.navigationController pushViewController:myViewController animated:YES];
but I get a black screen, while I have already put some controls in SenderPlayerViewController.
Are u trying to instantiate with an nib file? If so, you must use initWithNibName:bundle:
SenderPlayerViewController *myViewController = [[SenderPlayerViewController alloc] initWithNibName:#"SenderPlayerViewController" bundle:nil];
Also with a story board it is not enough to call alloc init on a controller class.
It should be something like
UIViewController *viewController = [[UIStoryboard storyboardWithName:#"MainStoryboard" bundle:NULL] instantiateViewControllerWithIdentifier:#"SenderPlayerViewController"];
If you are using a view controller from a storyboard you should use
SenderPlayerViewController *myViewController=[storyboard instantiateViewControllerWithIdentifier:#"TheNameOfYourController"]
instead of alloc init.
I have a navigation view controller that pushes "viewController1" properly. Then, from "viewController1", goToApp function is called in order to push "appViewController". Function goToApp is executed but aplication remains at same view, "viewControlller1". How to push it? Thank you.
from viewController1:
navigationViewController *theInstance = [[navigationViewController alloc] init];
[theInstance goToApp];
in navigationViewController:
-(void)goToApp {
appViewController *AppsViewController = [[appViewController alloc] initWithNibName:#"appViewController" bundle:nil];
[[self navController] pushViewController:AppsViewController animated:YES];
[AppsViewController release];
}
goToApp executed but appViewController not launched.
You should not create a new UINavigationController in viewController1. You should get it through the property navigationController. That property will return the UINavigationController that has the UIViewController on it's stack (if any, so it can be nil).
UINavigationController * theInstance = self.navigationController;
[theInstance goToApp];
See: http://developer.apple.com/library/ios/#documentation/UIKit/Reference/UIViewController_Class/Reference/Reference.html property navigationController.
Besides that, it is a better convention to name your pointers correctly to what they represent. I would suggest to rename theInstance to currentNavigationController or just navigationController.
I have some uiview, one call another in this way:
From first uiview:
MyViewController *contr1 = [[MyViewController alloc] initWithNibName:#"MyViewController" bundle:nil];
[self.view addSubview:contr1.view];
From second uiview:
MyViewController2 *contr2 = [[MyViewController2 alloc] initWithNibName:#"MyViewController2" bundle:nil];
[self.view addSubview:contr2.view];
now in the third uiview i want to return back on the first updating it ( calling viewDidLoad ). how can i do?
First of all - you are doing it wrong.
Since you are using view controllers present them modally or push them:
MyViewController2 *contr2 = [[MyViewController2 alloc] initWithNibName:#"MyViewController2" bundle:nil];
[self presentModalViewController:contr2];
If you want to dismiss modal controllers exactly to your root view controller you should obtain a pointer to it in the controller you are currently using and send it a message to dismiss every modal view that there is on it.
- (IBAction)doHomePage:(id)sender {
MyAppDelegate *appDelegate = (MyAppDelegate *)[UIApplication sharedApplication].delegate;
[appDelegate.navigationController.rootViewController dismissModalViewControllerAnimated:YES];
}
Also instead of viewDidLoad: you might want to use viewWillAppear: or viewDidAppear:.
Sorry beforehand if there are some typo errors in the code since I wrote it by hand.
What is the better code to move from "page" to "page"?I have a questionnaire on 4 pages and I loading 4 views from 4 xibs.
I picked up 2 way of moving from xib to xib (in my case, from page to page).
Method 1:
-(IBAction) MaleTapped: (id) sender {
Page1M *ivc = [[Page1M alloc] init];
UINavigationController *nc = [[UINavigationController alloc]
initWithRootViewController:ivc];
[self presentModalViewController:nc animated:NO];
[ivc release];
[nc release];
}
Second way:
-(IBAction)GotoPage2M:(id)sender {
page2M = [ [Page2M alloc]
initWithNibName:#"Page2M" bundle:nil];
[self.view addSubview:page2M.view];}
One method uses the RootViewController method, the second just loads the subview. For my 4 pages, which is the better/cleaner/smarter way?
I would recommend using a UINavigationViewController in this way. Going several modal views deep is icky.
- (IBAction) goToNextPage:(id)sender {
UIViewController * newView = [[MyViewController alloc] initWithNibName:#"MyViewController" bundle:nil];
[self.navigationController pushViewController:newView animated:YES];
[newView release];
}
The only reason I might do subviews is for the extra transition options.
I would recommend checking out Apple's sample Page Control code. It shows how to create something that pages through multiple view controllers and load them dynamically from xibs. The example just loads the same xib several times, but you could replace it with code that loads a different view controller or xib for each page.