I've an iPhone app that is a navigation-based app.
The customer require to convert 60% of the app to be inside a global TabBar. (i.e. to include one tabbar in 60% from the app views)
So, what is the best practice to follow here?
Is it to include a TabBar using IB into the Window?
Or add change the navigation code cross the whole app and push a TabBarController instead of the regular ViewController?
Please provide me with ideas.
Thanks.
I used a new window-based application and put the following code:
The idea is that to create a UITabBarController and put on it the NavigationController instead of the ViewControllers.
And each navigationController will navigate to its own set of ViewContrllers.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
UITabBarController* tabBarContoller = [[UITabBarController alloc]init];
Cross1VC* cross1VC = [[Cross1VC alloc]initWithNibName:#"Cross1VC" bundle:nil];
cross1VC.title = #"Cross 1";
UINavigationController* crossNav = [[UINavigationController alloc]initWithRootViewController:cross1VC];
crossNav.title = #"Cross";
[cross1VC release];
Part1VC* part1VC = [[Part1VC alloc]initWithNibName:#"Part1VC" bundle:nil];
part1VC.title = #"Part 1";
UINavigationController* partNav = [[UINavigationController alloc]initWithRootViewController:part1VC];
partNav.title = #"Part";
[part1VC release];
NSArray* viewControllers = [NSArray arrayWithObjects:crossNav, partNav, nil];
[tabBarContoller setViewControllers:viewControllers animated:YES];
//tabBarContoller.delegate = [[SomeDelegateHandlerClass alloc]init]; // assign, not retain
[self.window addSubview:tabBarContoller.view];
//[tabBarContoller release]; // make instance variable and release in dealloc
[self.window makeKeyAndVisible];
return YES;
}
Related
My First Question
DDMenuController(facebook split menu) Must be on RootviewController? it can not be on other viewController which we push on rootViewCotroller?
if answer is no then
Second Question
i am trying to make split viewController like facebook for that i am using this sample
https://github.com/devindoty/DDMenuController
now what i want to do is i dont want set DDMenuControl as rootviewcontroller in appdelegate in my rootcontrollers there are view buttons which push my all other ViewController
so what i want is from my rootViewController' Buttons i push another controller and then that view should get pushed and same time there should be DDMenuController too
so what will happen is on navigation bar there wont be back button there will be splitting screen button like facebook and from there i can go to another view controller
now let me tell you what i have achieved so far my rootViewController is getting displayed and then from there i push my other ViewController and on navigation bar splitting button is also getting displayed but its not working let me should you code to make this all clear
this is how i set my rootViewContoller in app delegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary
*)launchOptions
{
FirstPadViewController *mainController = [[FirstPadViewController alloc] init];
navController = [[UINavigationController alloc] initWithRootViewController:mainController];
self.window.rootViewController = navController;
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
return YES;
}
so it get displayed with some buttons from where i can push my other viewController
this is how i push my other ViewController
- (IBAction)goToCamera:(id)sender {
AROverlayPadViewController *svController = [[AROverlayPadViewController alloc] init];
[self.navigationController pushViewController:svController animated:YES];
[svController release];
svController = nil;
}
so AROverlayPadViewController is getting pushed
and in AROverlayPadViewController's viewWillAppear this is what i do for achieving splitting screen like facebook
-(void)viewWillAppear:(BOOL)animated{
DDMenuController *rootController = [[DDMenuController alloc] initWithRootViewController:self];
LeftController *leftController = [[LeftController alloc] init];
rootController.leftViewController = leftController;
}
splitting button is getting displayed but when i press it is not working
now i really dont have any clue what to do any help will be highly appreciated
Answering the first question: actually it's a yes. This is how you do it, in the method that sends you to your nextScreen:
-(void) goToAnotherController {
OtherViewController *nextScreen = [OtherViewController alloc] init];
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:nextScreen];
DDMenuController *menuController = (DDMenuController*)((AppDelegate*) [[UIApplication sharedApplication] delegate]).menuController;
[menuController setRootController:navController animated:YES];
}
I'm having trouble coding a button to go to the previous page. I was able to do it to go to the next page thinking if I did the same thing but changed it a bit it would work in reverse. Unfortunately, I come up with a lot of errors I can't resolve because it won't allow me to use the release function.
This is this the code that helps it to work going to the next page fine:
#import "ViewController.h"
#implementation ViewController
-(IBAction)btnClicked:(id) sender
{
//add the view of the view controller to the current View---
if (menuView==nil) {
menuView =
[[MenuView alloc] initWithNibName:#"MenuView"
bundle:nil];
}
[self.view addSubview:menuView.view];
}
-(void)dealloc {
[menuView release];
[super dealloc];
}
How do I do it so that a back button will go to the previous page though.
It's pretty simple, use this :
-(IBAction)back:(id) sender
{
[menuView.view removeFromSuperview];
}
But, I would suggest not using addSubview: for many views as it would be complex way to do. Use UINavigationController as #Paul.s suggested.
The way you are doing this is not quite correct and I would suggest doing some reading to get familiar with iOS programming.
Your program structure should be: create a navigation controller (2) to manage the stack of view controllers giving it a viewController (1) to act as it's root.
// AppDelegate.m
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
// 1
FirstViewController *firstViewController = [[FirstViewController alloc] init];
// 2
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:firstViewController];
[firstViewController release]; firstViewController = nil;
self.window.rootViewController = navigationController;
[navigationController release]; navigationController = nil;
[self.window makeKeyAndVisible];
return YES;
}
This will display your first view controller inside a UINavigationController. A UINavigationController is responsible for managing a stack of UIViewController's and giving you UI to navigate back down the stack as well as calling all the appropriate presentation related methods on a UIViewController at the correct times e.g. viewDidLoad. You should check out The View Controller Programming Guide for lots of info
Then inside your first view controller you do something like this to respond to the button:
- (IBAction)buttonClicked:(id)sender;
{
SecondViewController *secondViewController = [[SecondViewController alloc] init];
[self.navigationController pushViewController:secondViewController animated:YES];
[secondViewController release]; secondViewController = nil;
}
This creates a new view controller and pushes it onto the stack.
i have a tabBarController application and using .xib files for the interface not the storyboard
i have this code by default in the appdelegate
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
UIViewController *viewController1 = [[PopAdsFirstViewController alloc] initWithNibName:#"PopAdsFirstViewController" bundle:nil];
UIViewController *viewController2 = [[PopAdsSecondViewController alloc] initWithNibName:#"PopAdsSecondViewController" bundle:nil];
self.tabBarController = [[UITabBarController alloc] init];
self.tabBarController.viewControllers = [NSArray arrayWithObjects:viewController1, viewController2, nil];
self.window.rootViewController = self.tabBarController;
[self.window makeKeyAndVisible];
return YES;
i have created a Login View and don't know how to show it before the tabBarView and hide t after a successful login.
One way would be to show it as a modalView on launch. Dismissing upon successfull login?
eg:
UIViewController myLoginViewController = [[MyLoginViewController alloc] init withNibNamed:"MyLoginViewController"]; //Or whatever you instantiation is
[myTabViewController presentModalViewController:myLoginViewController animated:YES];
And to dismiss it (Hide it)
//This should be done from the original View Controller i.e. myTabViewController preferably in a delegate called by the modal view controller.
[self dismissModalViewControllerAnimated:YES];
Documentation on modalViewControllers:
http://developer.apple.com/library/ios/#featuredarticles/ViewControllerPGforiPhoneOS/ModalViewControllers/ModalViewControllers.html
The way that I did it for one of my apps is to just add them in the correct order. Add your tabbar controller to your window, then add the login controller over the top of the tab bar. Then show your window. The user won't see anything but your login controller. Once you login, you can just remove the login controller from view.
This way is probably best if you have information you need to hide until login. The other way is to only launch the login view only. On successful login, remove the login and add the tab bar controller. Either way is fine.
Presenting modally is probably the easiest, but requires a view in place before presenting. So if the data and view under the login controller isn't that sensitive, you could consider this option.
Another way would be using LoginViewControllerDelegate in your appDelegate.h file
In your .h
#import "yourLoginViewController"
//and add LoginViewControllerDelegate
Then in your .m
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
yourLoginViewController *loginView = [[yourLoginViewController alloc] initWithNibName:#"yourLoginViewController" bundle:nil];
loginView.delegate = self;
[window addSubview:loginView.view];
[window makeKeyAndVisible];
}
//add this one
- (void)loginViewControllerDidFinish:(yourLoginViewController *)loginViewController {
[window addSubview:tabBarController.view];
}
I have a tabbarcontroller with three tabs/viewcontrollers.
When I first start my app, with my ActivityIndicator set to be visible and animated - courtesy of interface builder - it works fine.
However when I click a button an internet window opens to Facebook in order to get the user's permission.
Once the Facebook part is taken care it returns to my app but the ActivityIndicator is not longer animated - it is still visible though, just frozen.
If I switch to another tab/viewcontroller and then come back to the tab/viewcontroller with the ActivityIndicator everything works fine.
Is there a way to refresh my ViewController so that I don't have to programmatically make the ViewController switch back and forth? Or any other suggestions?
/* I searched the forums and I saw a similar question. It appeared that there was a broken connection. Therefore I'll include the code where I add the ViewController (i.e., "controller" to my tabbarcontroller). */
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
controller = [[DemoAppViewController alloc] init];
controller.view.frame = CGRectMake(0, 20, 320, 460);
controller.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:#"movieAppBackground.jpg"]];
MyTabBarViewController *vc2 = [[MyTabBarViewController alloc] init];
SecondViewController *vc3 = [[SecondViewController alloc] init];
controller.title = #"Intro Screen";
vc2.title = #"Explore";
vc3.title = #"Send a Pic";
UITabBarController *tbc = [[UITabBarController alloc] init];
tbc.viewControllers = [NSArray arrayWithObjects:controller, vc2, vc3, nil];
self.theTBC=tbc;
[controller release];
[vc2 release];
[vc3 release];
[tbc release];
[self.window addSubview:tbc.view];
[self.window makeKeyAndVisible];
return YES;
}
whereever u have used NIB file to show with viewcontrollers u have to create them with initwithname
Example
SecondViewController *r=[[SecondViewController alloc]initWithNibName:#"SecondViewController" bundle:nil];
like this change whereever u have used nib file to create instance,
i meaned for all custom viewcontrollers u have created with NIB file
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
// Add the view controller's view to the window and display.
[window addSubview:viewController.view];
MainPageDialog *overviewViewController = [[MainPageDialog alloc] initWithNibName:#"MainPage" bundle:nil];
UINavigationController *nav_obj = [[UINavigationController alloc] initWithRootViewController:overviewViewController ];
[self.viewController presentModalViewController:nav_obj animated:YES];
[overviewViewController release];
[self.window makeKeyAndVisible];
return YES;
}
This code shows the blue bar of navigation controller, but no buttons on it.It seems like to be that the UINavigationController allocated as empty.
Who knows what problems is?
UPD:Archive http://www.mediafire.com/?lbjjvl6fcue2q18
Please help me, I'm new in objective-c
You need to create the button for it, for example:
UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:launcherView action:#selector(endEditing)];
self.navigationItem.leftBarButtonItem = doneButton;
[doneButton release];
The correct way to use a UINavigationController is to push view controllers on to it. That way they will be stacked and the navigation bar will be populated with a back button when it is case (i.e., when you can actually go back to a previous controller). You control the label that appears in the "back" button by defining the title of the controllers you push.
The technique shown in another answer (setting explicitly the button) is useful with defining the right button, if you ever need one.
You could try with this code:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
MainPageDialog *overviewViewController = [[MainPageDialog alloc] initWithNibName:#"MainPage" bundle:nil];
UINavigationController* navigation = [[UINavigationController alloc] init];
[navigation pushViewController:overviewViewController animated:NO];
[overviewViewController release];
[window addSubview:[navigation view]];
[self.window makeKeyAndVisible];
return YES;
}
Instead of doing:
UINavigationController* navigation = [[UINavigationController alloc] init];
[navigation pushViewController:overviewViewController animated:NO];
you could also use initWithRootController, but to display the general case of how you push a view controller I preferred this one.
Notice that since you are pushing just a root controller, you should see no back button at the moment, but if you push a second view controller, then it will appear.
EDIT: I gave a look at your project. Summary of what you should try and do:
objects you need in your NIB: File's Owner (UIApplication), First Responder, FBFun App Delegate (iVkAppDelegate), Window (UIWindow); remove the rest;
File's owner delegate outlet is FBFun App Delegate;
FBFun App Delegate window outlet is Window.
With this simple setup (more or less what you have), use this code :
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
UINavigationController* navigation = [[UINavigationController alloc] init];
//-- MainPageDialog *overviewViewController = [[MainPageDialog alloc] initWithNibName:#"MainPage" bundle:nil];
iVkViewController *overviewViewController = [[iVkViewController alloc] init];
overviewViewController.title = #"First";
[navigation pushViewController:overviewViewController animated:NO];
iVkViewController *overviewViewController2 = [[iVkViewController alloc] init];
overviewViewController2.title = #"Second";
[navigation pushViewController:overviewViewController2 animated:NO];
[overviewViewController release];
[window addSubview:[navigation view]];
[self.window makeKeyAndVisible];
return YES;
}
In the code above, as you notice, I instantiated twice your iVkViewController just to have a second controller to push onto the navigator.
Please, delete your existing app from the simulator, and the run this in order to see that the navigation bar is correctly created and you can go back from the second controller to the first one.
I removed usage of MainPageDialog, because the MainPage nib has many problems.
But I hope this skeleton is sufficient for you to go forward with your development.
You had missed the line as you are not adding view to window.Add this line in your code
[window addSubview:nav_obj.view];