I'm new to iOS development so please cut me some slack.
I'm trying to learn how to use UIPopoverCotroller and I'm having a problem.
The popover appears correctly but nothing is added to it, its just black.
I'm using this line of code to try to add content to the popover:
self.photosPopover = [[UIPopoverController alloc]initWithContentViewController:self.photosPopoverViewController];
Heres some more code to help:
-(void)popoverControllerDidDismissPopover:(UIPopoverController *)popoverController{
self.photosPopover=nil;
}
-(IBAction)photosPopoverButtonPressed:(id)sender{
if([self.photosPopover isPopoverVisible]){
[self.photosPopover dismissPopoverAnimated:YES];
self.photosPopover=nil;
return;
}
self.photosPopoverViewController = [[PhotosPopoverViewController alloc]init];
self.photosPopover = [[UIPopoverController alloc]initWithContentViewController:self.photosPopoverViewController];
[self.photosPopover setDelegate:self];
[self.photosPopover presentPopoverFromBarButtonItem:sender permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
[self.photosPopover setPopoverContentSize:CGSizeMake(320, 480)];
}
I'm using Xcode 4.3, ARC, and storyboards.
Thanks for your help!
-Shredder2794
You need to instantiate your view from storyboards. Sorry I didn't see this sooner...
self.photosPopoverViewController = [self.storyboard instantiateViewControllerWithIdentifier:#"photosViewController"];
This is how you connect a customViewController to a viewController object in Storyboards. You build your PhotosPopoverViewController.h and PhotosPopoverViewController.m then you click your viewController object in storyboards and find the Custom Class identifier. Start typing your class name and it will autofill it.
I have the following question:
I got some code that gets called when an user logs in. The code has to call another view controller and has to show another view. To show to new view, i got the following code:
[scrollView removeFromSuperview];
Form1 *formcontroller1 = [[Form1 alloc] initWithNibName:#"Form1" bundle:[NSBundle mainBundle]];
[self.view setAutoresizesSubviews:YES];
[self.view addSubview:formcontroller1.view];
[scrollView release];
The problem is, when the other view is loaded and i rotate the device, the view of the new nib is not resizing correctly.
EDIT:
I wasn't dismissing the current viewcontroller so some properties remained. What i did is this:
[scrollView removeFromSuperview];
[self dismissModalViewControllerAnimated:YES];
Form1 *formcontroller = [[Form1 alloc] init];
[self presentModalViewController:formcontroller animated:YES];
[scrollView release];
You should check the autoresizing properties of your nib view in Interface Builder...
It should look like in the picture:
The middle arrows are dimmed, but still active. This is where autoresizing is set. You could try and set that property programmatically by assigning in your controller viewDidLoad method:
self.view.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
You should also ensure that both your view and its superviewhave the "autoresize subviews" button checked (in the first pane of the inspector in IB)
OLD ANSWER:
How is Form1 – shouldAutorotateToInterfaceOrientation: defined?
By default, this method returns YES for the UIInterfaceOrientationPortrait orientation only. If your view controller supports additional orientations, override this method and return YES for all orientations it supports.
Your implementation of this method should simply return YES or NO based on the value in the interfaceOrientation parameter. Do not attempt to get the value of the interfaceOrientation property or check the orientation value reported by the UIDevice class. Your view controller is either capable of supporting a given orientation or it is not.
E.g.:
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
return YES;
}
to support all orientations.
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
i am using this following code to display a popover in my View
imagePopOver = [[UIPopoverController alloc];
initWithContentViewController:self.photoLibraryImageCollection.imagePickerController];
imagePopOver.popoverContentSize = CGSizeMake(185,675);
imagePopOver.delegate = self;
[imagePopOver presentPopoverFromRect:CGRectMake(600,0, 140, 800)
inView:self.view
permittedArrowDirections:UIPopoverArrowDirectionLeft animated:YES];
it working fine however if we click any other part of myView ,this displayed popover is dismissing.can any one tell me how can i avoid this problem. i don't want to dismiss it at any time.can any one tell me how can do it.
In the popover's delegate (your viewController, probably), implement
- (BOOL)popoverControllerShouldDismissPopover:(UIPopoverController *)popoverController {
return NO;
}
Don't forget to set the delegate!
just wrote the below code at the time of popover initialization.
myPopOver.passthroughViews = [NSArray arrayWithObject:self.view];
in the above code will not dismiss your popOver and we can work with our View.
if you don't want to dismiss UIpopover only at the time of a textBox edit,simply write
myPopOver.passthroughViews = [NSArray arrayWithObject:self.textBox];
So I am developing this view based app and I have an app that I want to start in landscape mode (haven't quite worked out how to do that, because in the plist file the "initial device orientation" isn't an option as I am assuming it used to be, from what people have said (I'm new to this app developing thing)).
Anyway I want to switch to a completely new view when I rotate to Portrait, and also a another new view when I rotate to portrait upside down. Up to now I have added View2Viewcontroller.(h+m) into my classes and also View2.xib into my resources.
I have this code:
- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{
if((fromInterfaceOrientation == UIInterfaceOrientationLandscapeLeft) ||
(fromInterfaceOrientation == UIInterfaceOrientationLandscapeRight))
{
// Load the view controller I want to display in portrait mode...
}
}
But I'm not too sure how to load the view controller or even where to put this code.
I advise to you use .nibv files, it's better to understand how to initilize view in by code.
anyway there is what you need.
[[viewController alloc] initWithNibName:#"viewController" bundle:[NSBundle mainBundle]];
in code you can do the same without nib filesw by this code
CGRect rect = [[UIScreen mainScreen] bounds];
//create a full-screen window
window = [[UIWindow alloc] initWithFrame:rect];
//create our view controller and add its view to the window
viewController = [ViewController new];
[window addSubview:[viewController view]];
[window makeKeyandVisible];