Starting from the spliview master/detail example I found in the SDK, I end up having an iPad app that has a master on the left hand side in landscape, whereas in portrait a button called "Master" allows displaying the master.
To display this button the following code is used
- (void)splitViewController:(UISplitViewController *)splitController willHideViewController:(UIViewController *)viewController withBarButtonItem:(UIBarButtonItem *)barButtonItem forPopoverController:(UIPopoverController *)popoverController
{
barButtonItem.title = #"Master";
[self.navigationItem setLeftBarButtonItem:barButtonItem animated:YES];
self.masterPopoverController = popoverController;
}
In my app the master view will be some kind of search view, so I would like the button called master to be displaying the system provided search icon.
First of all I simply do not know how to programmatically (at runtime) add a system icon to a button ? I know how to select it in the storyboard in Xcode at development time but not at runtime.
As I don't know how to do it, for testing purpose I add a right bar button on the top of the bar and I simply assign its image to the master button, like this :
- (void)splitViewController:(UISplitViewController *)splitController willHideViewController:(UIViewController *)viewController withBarButtonItem:(UIBarButtonItem *)barButtonItem forPopoverController:(UIPopoverController *)popoverController
{
//barButtonItem.title = #"Master";
barButtonItem.image = searchBarButton.image;
[self.navigationItem setLeftBarButtonItem:barButtonItem animated:YES];
self.masterPopoverController = popoverController;
}
And the result is that the master button simply does not display.
I repeat, this is just for testing purpose, finally I would like to simply assign the system provided search icon.
So my 2 questions are :
Why is the master button not displaying ? Am I obligated to use "text" for this button
How do I assign a system provided icon (at runtime) to such a button ?
Anyone can help me ?
You need to initialize the bar button item. You can do this using the following code, replacing the target and action parameters with your target and function.
self.barButtonItem = [[UIBarButtonItem alloc] initWithTitle:#"Master" style:UIBarButtonItemStylePlain target:self action:#selector(action)];
[self.navigationItem setLeftBarButtonItem:_barButtonItem animated:YES];
If you want to use a system item, then use the following code, replacing initWithTitle with initWithBarButtonSystemItem. Once again, replace the target and action parameters.
self.barButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemSearch target:self action:#selector(action)];
[self.navigationItem setLeftBarButtonItem:_barButtonItem animated:YES];
You also have to make sure you include the barButtonItem under #interface.
#interface ViewController ()
#property UIBarButtonItem *barButtonItem;
#end
Related
I have an app that is navigation based, so all views default to have a top nav bar. I have reached a page where a back button is not displayed by default for whatever reason and I was required to add one programatically. Unfortunately, the back button does not dismiss the modal view as expected.
I load the view in question through:
-(IBAction) linkPress:(id)sender
{
potentialUrl = [[NSURL alloc] initWithString:((Button*)sender).emailContent];
webViewInst = [[WebView alloc] initWithNibName:#"WebView" bundle:nil url:potentialUrl];
NSString *deviceType = [UIDevice currentDevice].model;
if([deviceType isEqualToString:#"iPad"] || [deviceType isEqualToString:#"iPad Simulator"]){
[self presentModalViewController:webViewInst animated:YES];
}
else {
[self.navigationController pushViewController:webViewInst animated:YES];
}
}
I add the back button through:
UIBarButtonItem *MKbackBtn = [[UIBarButtonItem alloc] initWithTitle:#"Back" style:UIBarButtonItemStylePlain target:self action:#selector(backButton:)];
[self.navigationItem setLeftBarButtonItem:MKbackBtn];
And the action that the back button should take to remove the view and return to the previous view:
-(IBAction)backButton:(id)sender
{
UIViewController* parent = [self parentViewController];
if(parent==nil) {
parent = [self presentingViewController];
}
[parent dismissModalViewControllerAnimated:YES];
}
If another set of eyes could go over these bits of code and try to discern what mistake I have made, that would be greatly appreciated! I am more than willing to provide more information/code as well.
Thanks!
You're calling dismissModalViewControllerAnimated but based on your code above there's a chance that it's not presented as modal and is instead pushed onto the navStack, in which case dismissModalViewControllerAnimated wouldn't actually dismiss it. Instead you would need to do popViewController etc. You should be casing around the presentation means. Can you confirm that this isn't part of the problem?
Also, off the top of my head I think you would call [self dismissModalViewController...] rather than parent.
Displaying a view controller modally does not include it in the navigation controller's stack. You have to provide your own UI mechanism to dismiss the modal view. It looks to me like your solution to dismiss the modal view controller should mostly work--although I think all you need is this one line in backButton::
[self dismissModalViewControllerAnimated:YES];
I have different xib files with NSViewController attached to them. (Screenshot below)
One of xib file called StartMenuViewController which has a button. I want to click that button and change the view to DetectingUSBViewController.(Screenshot below)
The IBAction of that button is in StartMenuViewController.m file.
And I use AppController.m to control my main xib view.(NSWindow + NSView) (Screenshot below)
When the application runs, I try to initialize the StartMenuViewController fist by doing the following thing in my AppController.m file.
-(void)awakeFromNib{
[self initialize];
}
-(void) initialize
{
#autoreleasepool {
//mainViewController is a NSViewController and _mainView is a NSView which connect with Custom View in main xib
self.mainViewController = [[[StartMenuViewController alloc]initWithNibName:StartMenuView bundle:nil]autorelease];
[_mainView addSubview:[_mainViewController view]];
}
}
It works fine and it will show the StartMenuViewController.xib on the window at first, but I do not know how to change the view after clicking the button(FIND USB DRIVE). I want the current view changes to DetectingUSBViewController.xib.
Simplest way possible, assuming you have tied your USB button properly in, do the following :
- (IBAction)usbButton:(UIButton *)sender {
DetectingUSBViewController *second = [[DetectingUSBViewController alloc] initWithNibName:#"DetectingUSBView" bundle:nil];
[self presentViewController:second animated:YES completion:nil];
}
load the DetectingUSBViewController in startMenuViewController as DetectingUSBViewController* v1 = [[ViewCont1 alloc] initWithNibName:#"ViewCont1" bundle:nil]; now add or replace the view as [v1 view] in view where you want to add/replace.
You need to hook up your button to send an IBAction
You need a 'View for DetectingUSBViewController.xib'
=> one way (iOS like) is to use a ViewController. Subclass NSViewController and then alloc init a DetectingUSBViewController
Add the view. Don't present the VC (as there is no such thing in OSX)
//button click action
- (IBAction)usbButton:(UIButton *)sender {
//! Retain the VC
Self.detectingUSBViewController = [[DetectingUSBViewController alloc] initWithNibName:#"DetectingUSBView" bundle:nil];
//add the view
[_mainView addSubview:[_detectingUSBViewController view]];
}
I am making a simple app to display drink details, and now I am trying to add a view that allows the user to input their own drink. I already created a view to display the details, and now I am just passing the view into another controller to make the add drink view. Problem is, when I try to add a "cancel" and "save" button, it doesn't appear, although the code complies without any errors. I have attached code as reference.
This is the code that makes the new view, when the add button is pressed. (I made an add button that works, and it pulls up the nav bar)
- (IBAction)addButtonPressed:(id)sender {
AddDrinkViewController *addViewController = [self.storyboard instantiateViewControllerWithIdentifier:#"DetailSecond"];
UINavigationController *addNavController = [[UINavigationController alloc] initWithRootViewController:addViewController];
[self presentModalViewController:addNavController animated:YES];
NSLog(#"Add button pressed!");
This is the code from the addviewcontroller implementation file:
- (void)viewDidLoad
{
[super viewDidLoad];
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:#selector(cancel:)];
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemSave target:self action:#selector(save:)];
}
- (IBAction)save:(id)sender {
NSLog(#"Save Pressed");
[self dismissModalViewControllerAnimated:YES];
}
- (IBAction)cancel:(id)sender{
NSLog(#"Cancel Pressed");
[self dismissModalViewControllerAnimated:YES];
}
I have imported the header from the addview into the root controller, so I don't think that is the problem, do any of you guys see anything that's wrong?
Just change the line
[self presentModalViewController:addNavController animated:YES];
to
[self presentViewController:navigationController animated:YES completion:nil];
and see the magic. I also tested the code
My advice to you is to create a template for the view before you run through any code in the XIB file of your app. Rather than trying to set each button after allocating a brand new view, setting a new one in the XIB before-hand allows you to link each element with the app and make sure it looks just right before you debug.
Simply go into your "[Your-App-Name]viewController.xib" and drag a view from the objects library to the pane on the left. From here add each of your elements and position them where you want on the view. Now in the "[Your-App-Name]viewController.h" file, add IBOutlets for each element that you need to change, and add IBActions for each of the buttons. Also create an IBOutlet for the new view.
IBOutlet UIView* addDrinkView;
Back in the XIB file, use files owner to link each outlet to each element and each method to each button. Make sure you link the IBOutlet
Now in your "[Your-App-Name]viewController.m" file, you can define each button method and all you need to do to access the new view and dismiss it are the following:
-(IBAction)openAddView
{
[self setView:addDrinkView];
}
-(IBAction)saveButtonPressed
{
[self setView:view];
//save code goes here
}
-(IBAction)cancelButtonPressed
{
[self setView:view];
//cancel code goes here
}
This should be much easier than trying to position everything in code.
Hope this helps!
In my UISplitViewController application, I have
RootViewController - view controller in the left pane.
DetailViewController - view controller in the right pane.
When one item (which is in a UITableView) in RootViewController is tapped, new view controller will be set as the following shows:
[detailViewController setViewControllers:[NSArray arrayWithObjects:newViewController, nil] animated:animated];
//detailPane is my DetailViewController
All works pretty well in landscape mode. However, I can't make the UISplitViewController work as what I want in portrait mode, that is, the RootViewController's popover button does not appear appropriately in my DetailViewController when I launch and use the application in portait mode.
When I launch the app in portrait mode, the popover button appears appropriately. But after tapping one item in the popover and a new view controller has been set on detailViewController, the button disappeared. I have to rotate the device to landscape and then back to portrait again to make the button appear again.
I set my UISplitViewController's delegate in my application's AppDelegate as follows:
self.splitViewController.delegate = self.detailViewController
And here is my UISplitViewControllerDelegate implementation
- (void)splitViewController: (UISplitViewController*)svc willHideViewController:(UIViewController *)aViewController withBarButtonItem:(UIBarButtonItem*)barButtonItem forPopoverController: (UIPopoverController*)pc {
NSLog(#"Will hide view controller");
barButtonItem.title = #"Menu";
[self.navigationItem setLeftBarButtonItem:barButtonItem];
self.popoverController = pc;
}
- (void)splitViewController: (UISplitViewController*)svc willShowViewController:(UIViewController *)aViewController invalidatingBarButtonItem:(UIBarButtonItem *)barButtonItem {
NSLog(#"Will show view controller")
NSMutableArray *items = [self.navigationItem.leftBarButtonItems mutableCopy];
[items removeAllObjects];
[self.navigationItem setLeftBarButtonItems:items animated:YES];
[items release];
self.popoverController = nil;
}
Any hint or help is greatly appreciated.
Thanks.
Just came up with a new solution.
Subclass UINavigationController and implement UISplitViewControllerDelegate. Set an instance of this class as the right ViewController of the splitViewController. Everytime you want to change the detail view controller from the master
NewDetailViewController *newDetailVC = ....// Obtain the new detail VC
newDetailVC.navigationItem.leftBarButtonItem = [[[[self.splitViewController.viewControllers objectAtIndex:1]topViewController]navigationItem ]leftBarButtonItem]; //With this you tet a pointer to the button from the first detail VC but from the new detail VC
[[self.navigationController.splitViewController.viewControllers objectAtIndex:1]setViewControllers:[NSArray arrayWithObject:newDetailVC]]; //Now you set the new detail VC as the only VC in the array of VCs of the subclassed navigation controller which is the right VC of the split view Controller
This works for me and I can avoid defining a hole protocol and setting the master as the delegate, which is a big trade off. Hope it helps.
If you still need it:
http://developer.apple.com/library/ios/#samplecode/MultipleDetailViews/Introduction/Intro.html
What I did to my source (I had similar setup to you) to fix it:
I have the master viewcontroller (UITableViewController in my case) be the delegate of the UISplitViewController. In the two delegate methods for UISplitViewControllers (so this would be in your master viewcontroller implementation) you would save the popupviewcontroller and the barbuttonitem in your class. Now, if you change your details viewcontroller, you do:
self.viewControllers = [NSArray arrayWithObjects:[self.viewControllers objectAtIndex:0], newDetailsViewController, nil];
UIViewController <SubstitutableDetailViewController>*vc = (UIViewController <SubstitutableDetailViewController>*)newDetailsViewController;
[vc invalidateRootPopoverButtonItem:_tableViewController.rootPopoverButtonItem];
[_createReportViewController showRootPopoverButtonItem:_tableViewController.rootPopoverButtonItem];
where we have
#protocol SubstitutableDetailViewController
- (void)showRootPopoverButtonItem:(UIBarButtonItem *)barButtonItem;
- (void)invalidateRootPopoverButtonItem:(UIBarButtonItem *)barButtonItem;
#end
the delegate that each of your detailsViewControllers should adhere to. You would implement like this:
- (void)showRootPopoverButtonItem:(UIBarButtonItem *)barButtonItem {
self.navigationItem.leftBarButtonItem = barButtonItem;
}
- (void)invalidateRootPopoverButtonItem:(UIBarButtonItem *)barButtonItem {
self.navigationItem.leftBarButtonItem = nil;
}
Let me know if this helps you.
I liked Nekto's solution, but it misses one key problem.
It's not clear what action: selector will cause the UISplitViewController to show the MasterViewController in a popover. When I finally figured this out, by examining the BarButtonItem in the debugger, I realized why it was so tricky to figure this out: the action: selector isn't documented anywhere in Apple's iOS SDK. Oops.
Try this:
UIBarButtonItem *showListView = [[UIBarButtonItem alloc] initWithTitle:#"List" style:UIBarButtonItemStyleBordered target:[self splitViewController] action:#selector(toggleMasterVisible:)];
[[detailViewController navigationItem] setLeftBarButtonItem:showListView];
You may want to surround this code with a conditional that checks the window is in in portrait mode, such as if ([self interfaceOrientation] == UIInterfaceOrientationPortrait)
When you are setting new view controllers placed on navigation stack, probably, all navigation buttons are reset. You can manually add appropriate buttons after changing navigation stack.
For example, you can pick code from - (void)splitViewController: (UISplitViewController*)svc willHideViewController:(UIViewController *)aViewController withBarButtonItem:(UIBarButtonItem*)barButtonItem forPopoverController: (UIPopoverController*)pc where default popover controller button is created:
UIBarButtonItem *item = [[UIBarButtonItem alloc] initWithTitle:#"Menu" style:UIBarButtonItemStyleBordered target:self action:#selector(appropriateSelector)];
[self.navigationItem setLeftBarButtonItem:barButtonItem];
self.popoverController = pc;
I have a navigation based app with a navigation bar, but there are a few instances where instead of pushing a view controller onto the stack, I need to present the view controller modally. The problem is that when I dismiss the modal view controller, everything functions as expected except that the navigation bar is hidden and the (parent view) has been resized, which is the expected behavior according to the docs. So I figured I could simply call a built-in method to unhide the navigation bar. I have already tried
[self.navigationController setNavigationBarHidden:NO];
as well as the animated version without success.
The documentation talks about this in the method
presentModalViewController: animated:
in the discussion section where it says,
On iPhone and iPod touch devices, the view of modalViewController is always presented full screen" and "Sets the modalViewController property to the specified view controller. Resizes its view and attaches it to the view hierarchy."However, the docs didn't clue me in as to how to undo this process after dismissing a modal view.
Has anyone else experienced this and found a solution?
Edit: I am having this same problem, so instead of asking my own question I am sponsoring a bounty on this one. This is my specific situation:
In my case, I am presenting an Image Picker in a Modal View Controller, over a Navigation Controller:
-(void) chooseImage {
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {
imagepicker = [[UIImagePickerController alloc] init];
imagepicker.allowsEditing = NO;
imagepicker.delegate = self;
imagepicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
imagepicker.navigationBar.opaque = true;
imagepicker.wantsFullScreenLayout = NO;
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
if (self.view.window != nil) {
popoverController = [[UIPopoverController alloc] initWithContentViewController:imagepicker];
[popoverController presentPopoverFromBarButtonItem:reset permittedArrowDirections:UIPopoverArrowDirectionDown animated:YES];
} else {}
} else {
[self.navigationController presentModalViewController:imagepicker animated:YES];
}
}
}
-(void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
[self.popoverController dismissPopoverAnimated:true];
} else {
[self.navigationController dismissModalViewControllerAnimated:YES];
}
//Save the image
}
-(void) imagePickerControllerDidCancel:(UIImagePickerController *)picker {
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
[self.popoverController dismissPopoverAnimated:true];
} else {
[self.navigationController dismissModalViewControllerAnimated:YES];
}
}
Make sure you a presenting AND dismissing the modalViewController from the UINavigationController, like so:
// show
[self.navigationController presentModalViewController:vc animated:YES];
// dismiss
[self.navigationController dismissModalViewControllerAnimated:YES];
If your view controller is actually on the UINavigationController's stack then this is the correct way to handle the presentation and dismissal of the modal view controller. If your UINavigationBar is still hidden, there is something else funky going on and we would need to see your code to determine what is happening.
Edit
I copied your code into an app of mine and the UIImagePickerController successfully presented and dismissed and my UINavigationController's UINavigationBar was still there. I truly believe that the problem lays elsewhere in your architecture. If you upload a zip w/ an example project I will take a look.
Simply try following code it will work
SettingsViewController *settings = [[SettingsViewController alloc] init];
UINavigationController *navcont = [[UINavigationController alloc] initWithRootViewController:settings];
[self presentModalViewController:navcont animated:YES];
[settings release];
[navcont release];
One need to present the navigation controller in order to have navigation bar on the presented controller
I think I've seen this behavior when presenting a view controller on the wrong VC. Are you calling presentModalViewController on the navigation controller or the individual VC?
Try calling it from the navigationController if you aren't already.
[self.navigationController presentModalViewController:myVC animated:YES];
If you present a controller as model, View controller will appear to total view.
If you want to access the navigation controller properties over the model view, You need to create another navigation controller reference and it continues as previous.
This may be useful for you.
Check this out. This is Apple's Documentation under UIViewController Class Reference:
It clearly mentions that modal view always presents in full screen mode, so it is obvious that navigation bar will be hidden. So put the seperate navigation bar on modal view to navigate back.
presentModalViewController:animated:
Presents a modal view managed by the given view controller to the user.
- (void)presentModalViewController:(UIViewController *)modalViewController animated:(BOOL)animated
Parameters
modalViewController
The view controller that manages the modal view.
animated
If YES, animates the view as it’s presented; otherwise, does not.
Discussion
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.
Sets the modalViewController property to the specified view controller. Resizes its view and attaches it to the view hierarchy. The view is animated according to the transition style specified in the modalTransitionStyle property of the controller in the modalViewController parameter.
Availability
Available in iOS 2.0 and later.
Hope this helps you understand that hiding the whole view along with navigation controller is default behaviour for modal view so try putting a seperate navigation bar in modal view to navigate.
You can check it further on this link
http://developer.apple.com/library/ios/#documentation/uikit/reference/UIViewController_Class/Reference/Reference.html
AddContactVC *addController =[self.storyboard instantiateViewControllerWithIdentifier:#"AddContactVC"];
UINavigationController *navigationController = [[UINavigationController alloc]initWithRootViewController:addController];
[self presentViewController:navigationController animated:YES completion: nil];
working for me shows navigation bar
Emphatic and Devin –
As I started reading through the Apple docs to get familiar with the problem, I noticed that the method you're using, presentModalViewController:animated:, appears to be deprecated in favor of presentViewController:animated:completion:. Perhaps you should try to use that method instead.
For your convenience, take a look for yourself:
presentModalViewController:animated: reference
I'll try to put together a quick test program to see whether what I've said above is actually true. But give it a shot – maybe it'll help!
Xcode has a template that does pretty close to what you're doing. from the results, i don't think you should be attempting to perform [self.navigationController presentModalViewController:vc] and [self.navigationController dismissModalViewControllerAnimated:] , but rather simply [self presentModalViewController:] and [self dismissModalViewControllerAnimated:] .
to see how the template does this for yourself, you can use the new project wizard in xcode 4.3 . perhaps it will provide some guidance:
from that choice, choose Next, then give your test project a name, choose "Universal", turn off automatic reference counting, hit next, save where you want it.
now, click on the target and switch the deployment target to 4.3 (or 4.0 if you prefer) for your testing purposes, and switch to your device or the iOS 4.3 simulator .
finally, substitute the following code in applicationDidFinishLaunching:withOptions: in the created AppDelegate.m:
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
self.mainViewController = [[[MainViewController alloc] initWithNibName:#"MainViewController_iPhone"
bundle:nil] autorelease];
} else {
self.mainViewController = [[[MainViewController alloc] initWithNibName:#"MainViewController_iPad"
bundle:nil] autorelease];
}
UINavigationController* navigationController
= [[UINavigationController alloc] initWithRootViewController:self.mainViewController];
self.window.rootViewController = navigationController;
[self.window makeKeyAndVisible];
return YES;
now, when i run this, it doesn't hide the navigationBar. and in the created MainViewController.m from the template, you'll see how it presents the modal view controller and dismisses it from the controller itself and not from the navigation controller. for good measure, to make the template code more like your own, go into MainViewController.m and delete the line that sets the modal view controller transition style ...
(of course, in iOS 5, with storyboards, the same thing can all be accomplished with modal segues ... which is how i've done this for apps that i'm not supporting for pre-5.0 that present a modalViewController in this fashion.)
One of the best solution it to use this Category MaryPopin
https://github.com/Backelite/MaryPopin