I have the following code:
PNRProfileViewController *vc = [[PNRProfileViewController alloc] initWithNibName:#"PNRProfileViewController" bundle:nil];
vc.delegate = self;
self.profileVC_ = vc;
UINavigationController *controller = [[UINavigationController alloc] initWithRootViewController:self.profileVC_];
AHLog(#"FRAME IS %#", NSStringFromCGRect(self.profileVC_.view.frame));
controller.view.frame = self.profileVC_.view.frame;
controller.view.autoresizingMask = self.profileVC_.view.autoresizingMask;
self.currentViewController_ = controller;
when I run this code, the frame height I got changes every time.. it's alternating between 416 and 460. I have no idea why this is. Any clue?
44 pixels is the height of the navigation bar.
To keep the navigation bar and have your nib respect its size, go into your .xib file, select the view, then on the attributes tab, set the tab bar drop down to navigation bar.
To remove the navigation bar, after you alloc your NavigationController call controller.navigationBarHidden = YES;
Related
I'm switching controllers via my navigation controller. When my app first loads the Appointment screen will scrollsToTop just fine. Once I switch controllers to Customers with
CustomerViewController *customers = [self.storyboard instantiateViewControllerWithIdentifier:#"CustomerViewController"];
[self.navController.view removeFromSuperview];
self.navController = [[UINavigationController alloc] initWithRootViewController:customers];
self.navController.view.frame = self.contentView.bounds;
[self.contentView addSubview:self.navController.view];
it stops working. Then switching back to my Appointments controller with
AppointmentViewController *appointments = [self.storyboard instantiateViewControllerWithIdentifier:#"AppointmentViewController"];
[self.navController.view removeFromSuperview];
self.navController = [[UINavigationController alloc] initWithRootViewController:appointments];
self.navController.view.frame = self.contentView.bounds;
[self.contentView addSubview:self.navController.view];
and then clicking the status bar the Appointments no longer scrolls to top. I have scrollsToTop set to YES in all of my controllers that load so they should be scrolling to the top. Anyone know why this stops working when I switch controllers then switch back?
EDIT:
I have my RootViewController which is my side menu (blue menu) and my AppointmentViewController which is the right side view.
.
The above code is in my RootViewController to determine which view should be placed on top.
You're not removing the old self.navController from your contentView.
I would like to have a UISegmentedControl embedded in a PopoverController, similar to what is described in this SO question : UISegmentedControl embedded in a UINavigationBar/Item
The difference is that I have a different view controller for each view that I want to show in the popover, depending on the selected index on the Segmented Control. I'm not sure how I would go about doing this. Whenever I try to push a new view on top of the root view controller, the UISegmentedControl disappears. I would just like to switch between the two viewcontrollers, while keeping the UISegmentedControl visible. Is this even possible?
Thanks in advance!
If its a different viewController for each one of the segments on the segmentBar, you'll have to use a container viewController that adds the views of each of the viewController as a subview on itself or sets its view to that of the viewController's view. For example:
UIViewController* containerController = [[[UIViewController alloc] init] autorelease];
//Inside the viewDidLoad of the the ContainerController class, do the following:
//Initialize all three viewControllers
UIViewController* test1 = [[[UIViewController alloc] init] autorelease];
UIViewController* test1 = [[[UIViewController alloc] init] autorelease];
UIViewController* test1 = [[[UIViewController alloc] init] autorelease];
//set up the segment and add it to the container's navBar's title view.
[segmentedControl addTarget:self action:#selector(segmentValueChanged:) forControlEvents:UIControlEventValueChanged];
- (void)segmentValueChanged:(id)sender
{
//if first tab selected
[self.view removeAllSubviews];
[self.view addSubview:test1.view];
//if second tab selected
[self.view removeAllSubviews];
[self.view addSubview:test2.view];
//if third tab selected
[self.view removeAllSubviews];
[self.view addSubview:test3.view];
}
Instead of adding it as a subView, you might be able to just set self.view = test1.view. Obviously, you would use the container view to initialize the navController and put that navController inside the popover. Hope this helps!
If you are using presentModalViewController method to show your new view controller on the screen, it will always cover the entire screen and what ever is underneath it. That's just how it works.
As per docs:
On iPhone and iPod touch devices, the view of modalViewController is
always presented full screen. On iPad, the presentation depends on the
value in the modalPresentationStyle property.
The way to do it and still being able to control how the view controller is positioned is to create your own presentation method.
I want to customize the look and feel of the tab bar of a UITabBarController. I want to change the colors, the way the icon looks when they are selected, and also, most important of all, I want to reduce the size of the custom toolbar.
My approaches for this and the hurdles in it are:
A) The first solution which came to my mind was to create my own viewController which will act like a UITabBarController with buttons in the bottom and add this viewController to the window. Once when user taps a button at the bottom, swap the view in the viewable area with the new viewController's which corresponds to the button now tapped by user.
The problem with this strategy is: since I swap view's the corresponding viewControllers will not get these messages:
viewWillAppear
viewWillDisappear
viewDidAppear
viewDidDisappear
And all the rotation events
B) I could have used the accepted answer's approach in this thread:
Custom UITabBarController Problems with View Controllers and Views
But my tabBar's height is not the same as the default.
Due to the cited reasons above, I cannot use those approaches.
Having said this, I have no special requirement of More tab. I will be having only 5 tabs which will be displayed by the tab bar and hence the re-ordering of tab bar items is out of scope.
Awaiting suggestions and ideas.
I have never attempted something like this but as I see it, you are supposed to send those messages to your child view controllers manually.
It shouldn't be problem to send -viewWill/Did(Dis)Appear to the right controller at the appropriate moment. This is what UITabBarController does, too.
As for rotation events:
In shouldAutorotateToInterfaceOrientation:, forward this message to your child controllers and set your return value depending on their return values (UITabBarController only returns YES if all its child controllers return YES for the requested orientation).
Forward willRotateToInterfaceOrientation:duration:, didRotateFromInterfaceOrientation: and willAnimateRotationToInterfaceOrientation:duration: to the child controllers (at least to the currently visible one) when you receive them.
If you have set the autoresizing masks of your child controllers' views correctly, they you rotate and resize correctly when the system rotates your custom tab bar controller's view. (At least I think that's how it should work.)
Again, I'm not sure if this will work.
You can implement the following code for the creating the custom tab bar in that use to images using the CGRect make.further code is use for the creating the custom tab bar
-(void)applicationDidFinishLaunching:(UIApplication *)application {
// Add the tab bar controller's current view as a subview of the window
tabBarController.delegate = self;
tabBarController = [[UITabBarController alloc] init];
mainDashBoard = [[DashBoard alloc] initWithNibName:#"DashBoard" bundle:nil];
mainSearchView = [[SearchView alloc] initWithNibName:#"SearchView" bundle:nil];
mainMoreView = [[MoreView alloc] initWithNibName:#"MoreView" bundle:nil];
UINavigationController *nvCtr0 = [[[UINavigationController alloc] init] autorelease];
UINavigationController *nvCtr1 = [[[UINavigationController alloc] initWithRootViewController:mainDashBoard] autorelease];
UINavigationController *nvCtr2 = [[[UINavigationController alloc] initWithRootViewController:mainSearchView] autorelease];
UINavigationController *nvCtr3 = [[[UINavigationController alloc] initWithRootViewController:mainMoreView] autorelease];
UINavigationController *nvCtr4 = [[[UINavigationController alloc] init] autorelease];//[[[UINavigationController alloc] initWithRootViewController:nil] autorelease];
tabBarController.viewControllers = [NSArray arrayWithObjects:nvCtr0,nvCtr1,nvCtr2,nvCtr3,nvCtr4,nil];
nvCtr0.tabBarItem.enabled = NO;
nvCtr4.tabBarItem.enabled = NO;
[window tabBarController.view];
}
So, I want my app starts with a UIViewController(without seeing a tabbar), and then enter a UITableView with navigationbar and tabbar. the problem is that the Tabbar is visible at the app starts up, anyone can help on this will be very appreciated...
I think you should either send -presentModalViewController:animated: to your main UIViewController with the tab bar controller as an argument or just do this:
[myWindow addSubview: myTabBarController.view];
Make your app a navigation based application (rather than a tab bar based one) then add a tab bar on the UITableView.
There is help for adding the UITabBar here
I do it like this : in this case drawing a table view and map view (From the Locati application)
tabBarController = [[UITabBarController alloc] init]; // creates your tab bar so you can add everything else to it
searchTableViewController = [[SearchTableViewController alloc] init]; // creates your table view - this should be a UIViewController with a table view in it, or UITableViewController
UINavigationController *searchTableNavController = [[[UINavigationController alloc] initWithRootViewController:searchTableViewController] autorelease];
[searchTableViewController release]; // creates your table view's navigation controller, then adds the view controller you made. Note I then let go of the view controller as the navigation controller now holds onto it
searchMapViewController = [[SearchMapViewController alloc] init];
UINavigationController *mapTableNavController = [[[UINavigationController alloc] initWithRootViewController:searchMapViewController] autorelease];
[searchMapViewController release]; // does exactly the same as the first round, but for your second tab at the bottom of the bar.
tabBarController.viewControllers = [NSArray arrayWithObjects:searchTableNavController, mapTableNavController, nil]; //add both of your navigation controllers to the tab bar. You can put as many controllers on as you like
I found this pattern a long time ago. Sorry that I can't point at the original.
YOu then need to add the tabbarcontoller to the relevant view ([...view addSubView:tabBarController];) possibly setting frame first.
I've got a button on a view. When I click on it, it should load another view, one with a novigation controller. So far I've got this, the button calls this method:
-(IBAction)loadOptionsView:(id)sender {
if (self.optionsRootController == nil) {
//optionsRootController is declared as: UINavigationController *optionsRootController;
optionsRootController = [[UINavigationController alloc] init];
//Options is a UIViewController
Options *myOptions = [[Options alloc] initWithNibName:#"OptionsMenu" bundle:nil];
[optionsRootController pushViewController:myOptions animated:NO];
[myOptions release];
}
[self.view addSubview:optionsRootController.view];
}
What happens when I click the button is that it loads the xib file OptionsMenu on top of the current screen, but there's a gap at the top of the size of the status bar, so I can see the view below. Any help? What's the right method to load a new view that contains a navigation controller?
Thank you all!
I solved this issue by placing after:
[optionsRootController pushViewController:myOptions animated:NO];
this line:
[optionsRootController.view setFrame: [self.view bounds]];
Nice and easy!
I think UINavigationController's designated initializer is
- (id) initWithRootController:(UIViewController *)rootController
So your code above would be better expressed as
//optionsRootController is declared as: UINavigationController *optionsRootController;
//Options is a UIViewController
Options *myOptions = [[Options alloc] initWithNibName:#"OptionsMenu" bundle:nil];
optionsRootController = [[UINavigationController alloc] initWithRootController: myOptions];
[myOptions release];
Is the VIew in your nib the right size for the whole screen? Try turning off the simulated status bar in IB.