I've looked through several threads and come to a solution that I thought would work.
UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:#"backbutton.psd"]
style:UIBarButtonItemStyleBordered target:self
action:#selector(barButtonBackPressed:)];
self.navigationItem.leftBarButtonItem = backButton;
This gives me nothing.
When I add this it gives me a regular blue bordered button (which isn't what I want) with the text "Back":
backButton.title = #"Back";
I don't get it.
I believe it's because you're using a PSD image file. That's not a supported format according to Apple documentation.
Related
In an iPad app I'm writing I have button in a static table cell that launches an image picker inside a popover.
I want the popover's arrow to point at the button that launched the popover. Right now, when I tap the button it doesn't. It throws the popover on screen (with the working image picker) but the arrow either points to the top of the screen or kind of anywhere else (can't figure out if it's random or not--see below).
The tableview that holds the static cell that contains the button has its scroll disabled but is located on a scroll view. Could that cause random arrow locations?
Here is my code:
// present image picker in a popover
_imagePicker = [[UIImagePickerController alloc] init];
_imagePicker.delegate = self;
_imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
_imagePicker.allowsEditing = NO;
_imagePicker.navigationBar.tintColor = [UIColor redColor];
_imagePicker.navigationBar.backgroundColor = [UIColor greenColor];
_popover = [[UIPopoverController alloc] initWithContentViewController:_imagePicker];
[_popover presentPopoverFromRect:self.theButton.frame inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
Can someone please explain why the arrow isn't pointing at the button's frame and/or how to fix it?
Thanks.
The button is likely not a direct subview of self.view.
Try:
[_popover presentPopoverFromRect:self.theButton.frame inView:self.theButton.superview permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
First of all I explain what i am doing. I created a navigation based application. I have to add a custom image in the navigationbar. I added the image by using -
[self.navigationController.navigationBar insertSubview:image atIndex:0];
After this i added two custom buttons left and right to the navigation bar of the same view.I have another view and on this view i also added two custom buttons left and right to the navigation bar. All is fine till now but as i navigate to my second view my custom buttons that i am adding to the navigation controller on viewwillappear doesn't show. I used this code to add custom buttons to navigation bar -
UIBarButtonItem *customHome = [[UIBarButtonItem alloc] initWithCustomView: buttonHome];
[self.navigationController.navigationItem setLeftBarButtonItem:customHome];
Please suggest what's wrong in this. :(
You're trying to set the navigationItem on the navigation controller instead of the view controller.
If you have embedded your UIViewController in a UINavigationController then in viewDidLoad of the View Controller you could, for example, make the title a UISearchBar (that you dragged to the UIViewController in Xcode IB) and put 2 buttons on the right like this:
UIBarButtonItem *componentsButton = [[UIBarButtonItem alloc] initWithTitle:#"components" style:UIBarButtonItemStylePlain target:self action:#selector(componentsButtonTapped:)];
UIBarButtonItem *settingsButton = [[UIBarButtonItem alloc] initWithTitle:#"settings" style:UIBarButtonItemStylePlain target:self action:#selector(settingsButtonTapped:)];
self.navigationItem.rightBarButtonItems = [NSArray arrayWithObjects:componentsButton, settingsButton, nil];
self.navigationItem.titleView = searchBar;
The issue here is the distinction between UINavigationController, which manages UINavigationBar, and UINavigationItem, which you and UINavigationController co-manage. (Don't forget the UINavigationBarDelegate protocol, which has little used but useful methods.)
I've spent the last three hours here on StackOverlow and the rest of the day on Google but unfortunately I can't figure out what I'm doing wrong.
I'm in a view launched by presentModalViewController: in this view I got some buttons and one is calling an IBAction method who will open UIImagePickerController instance modally.
Until here it's all ok: what I'd like to do is make a custom UIToolBar with 3 button (to open Photo Library, Make a photo, Cancel). I did a new UIView with these objects and I thought I could add in this way:
picker = [[UIImagePickerController alloc] init];
[picker setDelegate:self];
[picker setAllowsEditing:NO];
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
picker.cameraDevice = UIImagePickerControllerCameraDeviceRear;
CGRect overlayFrame = CGRectMake(0, 436, 320, 44);
cameraOverlayView.frame = overlayFrame;
picker.showsCameraControls = NO;
picker.cameraOverlayView = cameraOverlayView;
[self presentModalViewController:picker animated:YES];
I see my custom toolbar at the bottom, but on top of this there's a white space until the UIImagePickerController of the camera: for what I see, the sum of the blank space and my UIToolBar is equal to the CameraControls (turned off).
When I tap on "photo library" button, I can choose a picture, it works but starting from that point I will see the white space on the parents Views (after the dismissModalViewController:animated).
I can't see a way to fix this.
The most similar topic I found is this:
ModalViewController loading on top of another Modal
but it doesn't help or work for me.
Any help, at this point, would be very appreciated.
Thank you.
Fab
I am building my first iPad application. And one of my requirements is to deal with UISplitviewcontroller and UINavigationController.our proposed view hierarchy is (LoginView) ->UINavigationView(LandingView + CollectionView)->UISplitViewcontroller( DetailsView).Our app supports only landscape mode
I am referring this SO Question( and GILT app as well), as a newbi its hard for me to get it done based on that description.
So my questions are
1) How can I achieve same thing,if somebody can give small code snippets or reference to tutorial
2) As per Apples HIG, UISplitviewcontroller should be rootviewcontroller,what if it not. Will apple reject my app.(apparently GILT group has been approved)
3) I found MGSplitViewController , can I use that one not as root?
Any help would be appreciated. As a newbi i hope my question is genuine
If you want to use the out-of the box splitView it must be root; any hokeary-pokery here will either break apples guidelines or manifest very odd behaviour.
The MGSplitViewController is completely custom implementation of a SplitViewController. Its very good if you need that sort of thing, but some of the features are based round the fact that our app will be orientating.
Alternatively you could make your own. I have done this more than once and is easier than it sounds.
(LoginView)
->UINavigationView(LandingView + CollectionView)->UISplitViewcontroller(
DetailsView).
Based on an out-of-the-box UISplitView, I would suggest:
Make the splitView the root View.
Pop (not animated) a full screen Modal as soon as the app starts and allow the
user to navigate the loginView,
LandingView and collectView in this; i also recommend using a navController here.
Once the user is ready to proceed to
the splitView, populate the
splitView's rootView Controller and
DetailViewController with whatever
you want then ,animate the Modal out.
Dave does have a point, but i would look at it from the point of view that you are removing the choice of orientation from the user; removing standard choices (like supported orientations) because the designer assumes some configuration is more efficient will only annoy some users.
I did it by making a method in my detailViewController:
-(void)popHomeScreen:(BOOL)animated//OPENS THE HOMESCREEN IN A MODAL DISPLAY
{
firstRun=NO;
//myViewControllerForPopOver init here
myViewControllerForPopOver.modalPresentationStyle = UIModalPresentationFullScreen;
myViewControllerForPopOver.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;//simple anime
if (animated) [self presentModalViewController:myViewControllerForPopOver animated:YES];
else [self presentModalViewController:myViewControllerForPopOver animated:NO];
}
Then Call it in the detailViewControllers ViewDidAppear method:
-(void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
if(firstRun)[self popHomeScreen:NO];
}
//YOU WILL ALSO NEED TO MAKE 'firstRun=YES' in viewDidLoad
//firstRun is a BOOL
As for the root disappearing (leaving a big black space)..thats a known bug. though i thought for a while that it was caused by ordering an animation while/just before it was going to draw itself.
Also, i found that if i popped a full screen modal over the splitView then popped another form based modal (for example) quickly after it the full screen modal didn't draw properly.
SplitViews are like your mother-in-law, you don't really like them and when you have to use them you have to tip-toe round the landmines.
Try this, it works for me
1) in app delegate's didFinishLaunchingWithOptions make your login view to root view
self.window.rootViewController = self.loginViewController;
also, init the split view as the template do ( but not add to self.window)
MasterViewController *masterViewController = [[[MasterViewController alloc] initWithNibName:#"MasterViewController_iPad" bundle:nil] autorelease];
UINavigationController *masterNavigationController = [[[UINavigationController alloc] initWithRootViewController:masterViewController] autorelease];
DetailViewController *detailViewController = [[[DetailViewController alloc] initWithNibName:#"DetailViewController_iPad" bundle:nil] autorelease];
UINavigationController *detailNavigationController = [[[UINavigationController alloc] initWithRootViewController:detailViewController] autorelease];
self.splitViewController = [[[UISplitViewController alloc] init] autorelease];
self.splitViewController.delegate = detailViewController;
self.splitViewController.viewControllers = [NSArray arrayWithObjects:masterNavigationController ,detailNavigationController, nil];
2) add a swap view controller in app's delegate, which swap the root view to split viewcontroller.
-(void)swapToViewControllers:(RootViewControllerType)viewType
self.window.rootViewController = self.splitViewController;
3) invoke the swapToViewControllers in your login view.
Keep in mind that the HIG strongly encourages you to support all orientations. Unless you have a very, very good reason to support landscape only, you'll probably be rejected.
See page 19 of the HIG: http://developer.apple.com/library/ios/documentation/General/Conceptual/iPadHIG/iPadHIG.pdf
Modified Ryan CY's version with storyboard.
Put this code to login controller.
1. Set storyboard id of UISplitViewController to SplitViewController;
2. Set UISplitViewController delegate and save instance
UISplitViewController* splitController = [self.storyboard instantiateViewControllerWithIdentifier:#"SplitViewController"];
UINavigationController* navigationController = [splitController.viewControllers lastObject];
splitController.delegate = (id)navigationController.topViewController;
3. Change rootViewController after login
self.view.window.rootViewController = splitController;
I am trying to use the NavigationController's toolbar in my app. This toolbar's toolbarItems are suppose to change depending on which view controller is presented. this is very basic.
What I am trying to do is to add custom buttons to the toolbar using the UIBarButtonItem's "initWithCustomView:" method. However, the button won't show up on the toolbar. But if I create the UIBarButtonItem using the "initWithTitle:" or "initWithBarButtonSystemItem:" method, the button show up. For example, look at the code below:
UIBarButtonItem *item1 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem: UIBarButtonSystemItemBookmarks target:self action:nil];
UIBarButtonItem *item2 = [[UIBarButtonItem alloc] initWithTitle:#"edit" style:UIBarButtonItemStylePlain target:self action:nil];
NSArray *array = [[NSArray alloc] initWithObjects:item1, item2, nil];
[self setToolbarItems:array];
If this is done, buttons show up on the toolbar. But, if I were to do the following:
UIButton* replyBtn = [UIButton buttonWithType:UIButtonTypeCustom];
[replyBtn setImage:[UIImage imageNamed:#"Reply_Message.png"] forState:UIControlStateNormal];
[replyBtn addTarget:self action:#selector(replyButtonTapped:) forControlEvents:UIControlEventTouchUpInside];
replyBtn.frame = CGRectMake(10, 0, 40, 40);
UIBarButtonItem *replyButton = [[UIBarButtonItem alloc] initWithCustomView:replyBtn];
UIBarButtonItem *item1 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem: UIBarButtonSystemItemBookmarks target:self action:nil];
UIBarButtonItem *item2 = [[UIBarButtonItem alloc] initWithTitle:#"edit" style:UIBarButtonItemStylePlain target:self action:nil];
NSArray *array = [[NSArray alloc] initWithObjects:item1, replyButton, item2, nil];
[self setToolbarItems:array];
In this code, only the item1 and item2 are displayed on the toolbar. replyButton is not shown on the toolbar. There is blank space at the place where the button is suppose to be at.
If this same code used on a regular toolbar that I create instead of NavigationController's toolbar, the button shows up. I am trying to just use one toolbar throughout the app to have the same feel that Apple's Mail application does. The reason that I need to use the "initWithCustomView:" method is because one of the icons is colored and this is the only way it shows up colored on a normal toolbar. Now, I have looked through apple documentation and there isn't any mention of why the "initWithCustomView:" method couldn't be called (or maybe I couldn't find it).
Could please somebody shine some light on this topic to help me point in the right direction. thanks in advance guys.
I can't see the difference from what you tried, but it eventually worked for me, with that code:
//////////////////////////////////////////////////////////////////////////////////////////////
/////>>>> Adding buttons for browsing in the toolbar of the popover's navigation controller///
//////////////////////////////////////////////////////////////////////////////////////////////
//>>>>Create a goBack button
goBack = [UIButton buttonWithType:UIButtonTypeCustom];
UIImage *goBackImage = [UIImage imageNamed:#"back1.png"];
[goBack setImage:goBackImage forState:UIControlStateNormal];
[goBack addTarget:self action:#selector(goBackClicked:) forControlEvents:UIControlEventTouchUpInside];
goBack.frame = CGRectMake(0,0,goBackImage.size.width,goBackImage.size.height);
//Create a Bar button to hold this button
UIBarButtonItem *goBackBarButton = [[[UIBarButtonItem alloc] initWithCustomView:goBack] autorelease];
UIBarButtonItem *flex1 = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil] autorelease];
UIBarButtonItem *addButton = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRewind target:nil action:nil] autorelease];
NSArray *arrayOfButtons = [[[NSArray alloc] initWithObjects:goBackBarButton, flex1, addButton, nil] autorelease];
[self setToolbarItems:arrayOfButtons];
Note few differences from yours (maybe that's where the catch? I'm not sure):
1. my buttons are not allocated locally in the method, but in the class (you know, the property, synthesize, etc)
2. yours
[replyBtn setImage:[UIImage imageNamed:#"Reply_Message.png"] forState:UIControlStateNormal];
where mine looks a bit different
[goBack setImage:goBackImage forState:UIControlStateNormal];
Try these tiny changes, maybe it will work :)
I was having the same problem. It turns out that the toolbar for the UINavigationController resets it's items every time a new view gets pushed on the stack. I was trying to set the toolbar items in the applicationDidFinish function, and it was not working. It worked once I set the toolbar itms in the - (void) viewDidAppear function of the viewController that was being pushed onto the navigation stack.
So, it seems like if you want the navigation controller to keep the same toolbar items throughout the application, you have to set the toolbar items in each view that you push onto the navigation controller after the view appears.
I hope that helps!
I'd wager a guess that the item isn't showing up because its view doesn't have anything in it. Are you sure there's an image called Reply_Message.png in your project? [UIImage imageNamed:#"Reply_Message.png"] might be nil.
You can use one toolbar throughout your app without using the navigation controllers toolbar. Since your code works with a non-navigationController toolbar, this might be the easiest way to accomplish what you want. In your app delegate, try adding a toolbar to window, like this. This way it is persistent throughout the app. Make sure you consider a scheme that will let you access the toolbar to add/remove buttons, or hide/show it from different view controllers.
- (BOOL)application:(UIApplication *)application
didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
/////// frame sizes ////////
// compensate for the status bar
int statusBarHeight = 20;
// toolbar
int toolbarWidth = window.frame.size.width;
int toolbarHeight = 30; // I think standard size is 30
int toolbarxOffset = 0;
int toolbaryOffset = window.frame.size.height - tHeight;
CGRect toolbarFrame = CGRectMake(toolbarxOffset,
toolbaryOffset,
toolbarWidth,
toolbarHeight);
/////// toolbar //////////////////////
self.myPersistentToolbar = [[UIToolbar alloc] initWithFrame:toolbarFrame];
[window addSubview:self.myPersistentToolbar];
}