As it has been asked many times, I am trying to switch views by using a segmented control correctly. I cannot just hide/display because the views are too complicated.
I have gotten it to work using this solution from this answer, but this places the segmented control in the title bar. I would like to palce it on the bottom, in a toolbar.
I have tried hooking it up via IB and declaring each subviews control, but no luck. I think it has something to do with the #selector section.
Can someone please shed some light on this for me?
UIBarButtonItem *item = [[[UIBarButtonItem alloc] initWithCustomView:segmentedControl] autorelease];
// if you are in a navigation controller:
[self.navigationController setToolbarHidden:NO];
self.toolbarItems = [NSArray arrayWithObject:item];
// else, created a UIToolBar called toolBar at the bottom of the view and...
toolBar.items = [NSArray arrayWithObject:item];
Related
I've developed for Mac before but this is the first time I've attempted to use the NSPopover control, which seemed like a great idea to start out with but so far is causing me no end of problems. The applciation is a menu bar application. I have two NSButton objects in the NSPopover's view controller, the NSPopover is being created programmatically in another subclass of NSButton, the same button which it is being shown relative to. This NSButton that it is being shown relative to is contained along with some other buttons in an NSMenuItem
The popup, containing the two buttons, is being shown fine (see screenshot below), however, despite the 'Yes' button being highlighted with a focus ring, neither button responds to click events, they do not even graphically click in like I would expect them to.
And this is the code that creates the NSPopover and positions it onscreen:
someViewController *confirmationDialogue = [[someViewController alloc] initWithNibName:#"someViewController" bundle:nil];
popOver = [[NSPopover alloc] init];
[popOver setBehavior:NSPopoverAppearanceMinimal];
[popOver setBehavior:NSPopoverBehaviorTransient];
[popOver setContentViewController:confirmationDialogue];
[popOver showRelativeToRect:NSMakeRect(0, 0, self.frame.size.width, self.frame.size.height))
ofView:self
preferredEdge:NSMaxYEdge];
Has anyone got any kind of solution/workaround to this?
Thanks in advance :)
P.s. This is my first question on SO, so I hope I've provided enough information but I'll give any more details as needed.
I've ran into an interesting and strange question while messing around with a project.
After spending like 3 hours doing it, I found out you can't change the view of the UIBackBarButtonItem, only the UILeftBarButtonItem, so if I want to implement a custom back button, I hide the UIBackButtonItem and display a UILeftBarButtonItem which does the popping.
Now I find it odd, that you can't change the UIBackBarButtonItem's view, but you can change the UILeftBarButtonItem and the UIRightBarButtonItem's views.
Can someone explain me why would Apple do this?
Actually, you can. Use UIBarButtonItem's instance method setBackButtonBackgroundImage:forState:barMetrics:.
So if you want to change the background image for all your back buttons, your code should like something like:
UIImage *backButtonBgImageNormal = [[UIImage imageNamed:#"back_button_bg.png"] resizableImageWithCapInsets:UIEdgeInsetsMake(5, 15, 5, 5);];
[[UIBarButtonItem appearance] setBackButtonBackgroundImage:backButtonBgImageNormal forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];
Use delegate method of UINavigationController, such like
#pragma mark -
#pragma mark - UINavigationController Delegate Methods
- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated
{
//// customize you own stuff here;
UINavigationBar *morenavbar = navigationController.navigationBar;
UINavigationItem *morenavitem = morenavbar.topItem;
morenavitem.rightBarButtonItem.tintColor = [UIColor blackColor];
}
I think I have a comprehensive solution for you.
1) From experience, it's just best to not bow to limitations of BarButtonItems. I suggest you create a simple UIButton, customise it to your liking. maybe add an action to its touch events..brand it with custom background and title colors...etc.. keep a reference to this button, maybe as a property.
2) Then, you create an instance of UIBarButtonItem using the UIBarButtonItem initializer -initWithCustomView, you sneak in the UIButton instance as this custom view in the init and have complete control over it.
3) Finally, you just do this.
self.navigationItem.LeftBarButtonItems = #[ourUIBarButtonItem].
The navigation bar has an Array property "leftBarButtonItems" for series of left buttons, and rightBarbuttonItems for the right side. Just replace this with your own array, containing the UIbarButtonItem, that containing your button, and you having a reference to your button.
And now you can completely control you button that is properly in the navigation bar.
NOTE! - Once you provide such a leftBarButtonItem, the stock Apple BackButton is gone.
zThis is based on a question I asked here which I have made good progressed already:
custom uitableviewcell will not display label texts
I basically followed the tutorial that was provided for me.
http://brianflove.com/2012/12/10/how-to-create-an-ipad-popover-view/
QUESTION
Now my issue is, I have to dynamically generate my ui bar buttons as if I just drag and drop it on the storyboard I am limited to one on the left and one on the right. This is my code to generate my button
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
UIBarButtonItem *btn = [[UIBarButtonItem alloc] initWithTitle:#"Button" style:UIBarButtonItemStyleBordered target:self action:#selector(getMenu:)];
self.navigationItem.leftBarButtonItems = [[NSArray alloc] initWithObjects:btn, nil];
}
Based on that tutorial I need to use a segue to popover the uitableview that I need. But that will require me to have an anchor point like so
So my question is, how do I add an anchor point to that UIBarButtonItem? I've been searching and I keep finding something regarding creating a custom popover class? Is this accurate?
I solved this issue by creating an invisible UIView on the Navigation Bar itself and then use that as the anchor point for the segue. The issue with that is the "arrow" of the popover when the uiviewcontroller gets displayed is awkwardly placed. Still trying to figure that out.
This is where I got the answer from
https://stackoverflow.com/a/14514837/639713
i have a view controller, which is standalone and has two left UIBarButtonItem, however when i push it, i want to have these two buttons + the back button
i tried
- (void)viewDidLoad
{
[super viewDidLoad];
// back
if (self.navigationController.navigationItem.backBarButtonItem) {
self.navigationItem.leftBarButtonItems = [NSArray arrayWithObjects:self.navigationController.navigationItem.backBarButtonItem, self.barButtonFilter, self.barButtonFilterContacts, nil];
} else {
self.navigationItem.leftBarButtonItems = [NSArray arrayWithObjects:self.barButtonFilter, self.barButtonFilterContacts, nil];
}
}
if there is a back button, than add, else replace
but i didnt work
I am not able to get your problem but according to your caption you want to replace you back button of UINavigationController with a bar button item, in that case you simply need to have a custom button in place of back Button:
UIBarButtonItem *backButton= [[UIBarButtonItem alloc] initWithTitle:#"yourTitle" style:UIBarButtonItemStylePlain target:self action:#selector(someFunction:)];
self.navigationItem.rightBarButtonItem = backButton;
[backButtonrelease];
If this is not your problem please elaborate.
So the issue here is that a UINavigationBar can only have one leftButtonItem and one rightButtonItem. But What you can do is in the center of the UINavigationBar you can have a UIView. You can use this to place the buttons on.
Someone has the code here: adding-buttons-to-the-titleview-of-navigationbar-without-having-to-repeat-code
From Apple's iOS Human Interface Guidelines:
Use a toolbar instead of a navigation bar if you need to offer a
larger set of controls, or you do not need to enable navigation.
Avoid crowding a navigation bar with additional controls, even if
there appears to be enough space. The navigation bar should contain no
more than a view’s current title, the back button, and one control
that manages the view’s contents. If, instead, you use a segmented
control in the navigation bar, the bar should not display a title and
it should not contain any controls other than the segmented control.
http://developer.apple.com/library/ios/#documentation/userexperience/conceptual/mobilehig/UIElementGuidelines/UIElementGuidelines.html
Just because I am unable to find a secure way (in a sense that it can be rejected by Apple guys) to customize UITabbar, in particular UITabBarItem I am trying some workaround.
I have a main view on which I recreate a kind of UITabBar, a normal view with two buttons inside. This is (roughly) the current hierarchy:
-MainView
--placeholder(UIView)
--fakeTab (UIView)
What I want to do is, after tapping a button in fakeTab, build a UINavigationController and add it to "placeholder" view so that the fakeTab remain on top and the whole navigation happens on the placeholder level.
I already tried with this piece of code in the method that it's intercepting tap button, and it works, I can see the ipvc.view added to placeholder.
IPPlantsViewController *ipvc = [[IPPlantsViewController alloc] initWithNibName:#"IPPlantsView" bundle:[NSBundle mainBundle]];
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:ipvc];
UIView *placeholder = [self.view viewWithTag:200];
[placeholder addSubview:ipvc.view];
But later when I call from inside ipvc, then nothing happens:
IPAttributes *ipas = [[IPFactory findPlantByIndex:indexPath.row] attrs];
[self.navigationController pushViewController:ipa animated:YES];
I find the solution myself. What I was doing wrong is to attach the ipvc controller view to placeholder. Instead of doing this:
[placeholder addSubview:nav.view];
and everything works as expected, with my fake tabbar fully customized :-)
But, as a side note, the viewWillAppear seems to be never called.
It would be interesting to know why. I partially solved by making IPPlantsViewController the delegate of the UINavigationController.