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  • UIScrollView issue with autorotation and content scaling

    - by boliva
    Hi, I'm building a new (autorotating) iPad app that consists mainly of a screen sized UIScrollView that contains an UIImageView for an image which is 5 times the iPad screen resolution while in portrait mode (3840x1024). What I haven't been able to accomplish is that whenever the device rotates (to whichever orientation) the imageView bounds and the scrollView contentSize asjusts the image for the new height (maintaining its aspect ratio), making the height of the image to always fit the device height for the given orientation (so in the particular case of this image, it would get shown as 2880x768). I tried different combinations of autoresizingMask and contentMode for the imageView but the closer I've been able to get is to effectively display the image at the desired size but with a white padding around it and into the scrollView content (to make up for the original orientation contentSize). I also tried recalculating the scrollView contentSize in the didRotate.../viewWillAnimate... rotation-related methods in my viewController class, with no avail. Best regards and thanks for your time

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  • Problem with Three20 TTPhotoViewController

    - by Coppes
    Hi there, I aint sure if this is the right place to ask or report this... but i hope someone here can help me out with the following problem I'm currently creating an app which offers several functionalities. anyways it also includes the TTPhotoViewController which Three20 offers. Well this controller is absolutely awesome but i'm haveing some trouble after useing the TTPhotoviewcontorller, since then all content falls behind my navigationbarcontroller. Here are some screenshots where you can see before and after opening the viewcontroller Before : http:// img121.imageshack.us/img121/2253/fotoze.jpg After : http:// img88.imageshack.us/img88/5899/foto1c.jpg [remove spaces after the // ] Hopefully you guys can help me out since i'm quite new in these things. Thanks in advance, Wesley

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  • IPhone Example : Login Page and then Navigate to another Screen (UI Table View)

    - by Smc
    Hi, I am an .Net Expert but a new to the IPhone App Development. Recently I have started workinf on Objective - c. I need a help I need a example which shows a Login Screen and then Navigates to the another Screen (UITableView) when username and password and found correct. As of now I am assuming that username and passwords are hardcoded in app. I have tried to Design the Screen for Login UI but unable to Load the another ViewController but it wont worked Can some one help me out with examples, Links?

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  • SOLVED mwfeedparser integrating in my app gives EXC_BAD_ACCESS (code=1, address=0xa0040008)

    - by Pranoy C
    SOLVED- Got it! The problem was that since I am creating the DoParsingStuff *parseThisUrl object in the viewDidLoad method, it's scope was only within that method. So after the method finished, the object got deallocated. I changed it to an instance variable instead and now it works. It gives a different error but that it an entirely different issue. Issue was: I have been struggling with trying to integrate the mwfeedparser library in my app for parsing RSS and ATOM feeds. It throws a gives EXC_BAD_ACCESS error which I can't seem to troubleshoot. //My Class looks like - My interface looks like: #import <Foundation/Foundation.h> #import "MWFeedParser.h" #import "NSString+HTML.h" @protocol ParseCompleted <NSObject> -(void)parsedArray:(NSMutableArray *)parsedArray; @end @interface DoParsingStuff : NSObject<MWFeedParserDelegate> @property (nonatomic,strong) NSMutableArray *parsedItems; @property (nonatomic, strong) NSArray *itemsToDisplay; @property (nonatomic,strong) MWFeedParser *feedParser; @property (nonatomic,strong) NSURL *feedurl; @property (nonatomic,strong) id <ParseCompleted> delegate; -(id)initWithFeedURL:(NSURL *)url; @end //And Implementaion: #import "DoParsingStuff.h" @implementation DoParsingStuff @synthesize parsedItems = _parsedItems; @synthesize itemsToDisplay = _itemsToDisplay; @synthesize feedParser = _feedParser; @synthesize feedurl=_feedurl; @synthesize delegate = _delegate; -(id)initWithFeedURL:(NSURL *)url{ if(self = [super init]){ _feedurl=url; _feedParser = [[MWFeedParser alloc] initWithFeedURL:_feedurl]; _feedParser.delegate=self; _feedParser.feedParseType=ParseTypeFull; _feedParser.connectionType=ConnectionTypeAsynchronously; } return self; } -(void)doParsing{ BOOL y = [_feedParser parse]; } # pragma mark - # pragma mark MWFeedParserDelegate - (void)feedParserDidStart:(MWFeedParser *)parser { //Just tells what url is being parsed e.g. http://www.wired.com/reviews/feeds/latestProductsRss NSLog(@"Started Parsing: %@", parser.url); } - (void)feedParser:(MWFeedParser *)parser didParseFeedInfo:(MWFeedInfo *)info { //What is the Feed about e.g. "Product Reviews" NSLog(@"Parsed Feed Info: “%@”", info.title); //self.title = info.title; } - (void)feedParser:(MWFeedParser *)parser didParseFeedItem:(MWFeedItem *)item { //Prints current element's title e.g. “An Arthropod for Your iDevices” NSLog(@"Parsed Feed Item: “%@”", item.title); if (item) [_parsedItems addObject:item]; } - (void)feedParserDidFinish:(MWFeedParser *)parser {//This is where you can do your own stuff with the parsed items NSLog(@"Finished Parsing%@", (parser.stopped ? @" (Stopped)" : @"")); [_delegate parsedArray:_parsedItems]; //[self updateTableWithParsedItems]; } - (void)feedParser:(MWFeedParser *)parser didFailWithError:(NSError *)error { NSLog(@"Finished Parsing With Error: %@", error); if (_parsedItems.count == 0) { //self.title = @"Failed"; // Show failed message in title } else { // Failed but some items parsed, so show and inform of error UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Parsing Incomplete" message:@"There was an error during the parsing of this feed. Not all of the feed items could parsed." delegate:nil cancelButtonTitle:@"Dismiss" otherButtonTitles:nil]; [alert show]; } //[self updateTableWithParsedItems]; } @end //I am calling this from my main viewcontroller as such: #import "DoParsingStuff.h" @interface ViewController : UIViewController <ParseCompleted> .... //And I have the following methods in my implementation: DoParsingStuff *parseThisUrl = [[DoParsingStuff alloc] initWithFeedURL:[NSURL URLWithString:@"http://www.theverge.com/rss/index.xml"]]; parseThisUrl.delegate=self; [parseThisUrl doParsing]; I have the method defined here as- -(void)parsedArray:(NSMutableArray *)parsedArray{ NSLog(@"%@",parsedArray); } //I stepped through breakpoints- When I try to go through the breakpoints, I see that everything goes fine till the very last [parseThisUrl doParsing]; in my delegate class. After that it starts showing me memory registers where I get lost. I think it could be due to arc as I have disabled arc on the mwfeedparser files but am using arc in the above classes. If you need the entire project for this, let me know. I tried it with NSZombies enabled and got a bit more info out of it: -[DoParsingStuff respondsToSelector:]: message sent to deallocated instance 0x6a52480 I am not using release/autorelease/retain etc. in this class...but it is being used in the mwfeedparser library.

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  • UINavigationController does not set view properties correctly when pushed

    - by Sheehan Alam
    I have a UITabBarControllerDelegate that pushes a new view controller when a certain tab is pressed: - (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController { MyView* myView = [[[MyView alloc] initWithNibName:@"MyView" bundle:nil]autorelease]; if([self.tabBarController.selectedViewController.title isEqualToString:@"Friends"]){ NSLog(@"Clicked Friends"); myView.reloadFriends = TRUE; [self.navigationController myView animated:YES]; } } However, if I change my code to set the tabbar's selected view controller to myView everything works, but I don't get my navigation bar: if([self.tabBarController.selectedViewController.title isEqualToString:@"Friends"]){ NSLog(@"Clicked Friends"); myView.reloadFriends = TRUE; self.tabBarController.selectedViewController = myView; } How can I set the reloadFriends property in MyView and have the navigation bar at the top?

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  • iPhone:Tabbar item actions are not happening

    - by user187532
    Hello all, I created a window application, which has a tabbar controller with four tabbar items. Each tabbar items are linked with a tableview. I have also set Navigation bar for each tabbar items. I have appdelegate file, which calls the first tableview controller of which is set for first tabbar item. I am trying to retrieve and do an action whenever a tabbar item is clicked. For that, i tried to add "- (void)tabBar:(UITabBar *)tabBar didSelectItem:(UITabBarItem *)item" and "- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UITableViewController *)viewController" in my first tableview controller, but it is not at all responding whenever i click any tabbar items. My question is, if i create a window based application and added tabbar controller, tableview and navigation bar in .XIB file, is it not possible to access and do an action programatically whenever a tabbar item is clicked? (or) Am i doing anything wrong? Please help me to resolve this and share your ideas. Thanks.

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  • UISearchBar and UINavigationController

    - by Calvin L
    I have an .xib file connected to a ViewController, which is init'ed as the root controller of an instance of UINavigationController in my appDelegate. In that view, I have a UISearchBar and a UITableView below it. When the view loads up, there's a navigationBar at the top, followed by a ~20 pixel gap, and then the UISearchBar, and the table beneath it: My problem is that when I enter the UISearchBar to type something, the navigation bar disappears (which is fine), but the search box is all screwy: I'm pretty new to this (a couple of weeks), so I'm not quite sure what's going on. Can anyone help me shed some light on this?

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  • Undo "Upgrade Current Target for iPad?

    - by Moshe
    I've upgraded current Target for iPad and I dodn't like the result. Now, i've tried to downgrade by deleting files but it's not working. Help! Do I need to change project settings? Does XCode keep a backup of the project? What to do... It doesn't run on iPhone anymore... EDIT: The console crash log on the iPhone Simulator: 2010-05-10 00:11:02.455 iDecide[9743:207] Unknown class iDecideAppDelegate in Interface Builder file. 2010-05-10 00:11:02.456 iDecide[9743:207] Unknown class iDecideViewController in Interface Builder file. 2010-05-10 00:11:02.465 iDecide[9743:207] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<UICustomObject 0x391eb80> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key viewController.' 2010-05-10 00:11:02.466 iDecide[9743:207] Stack: ( 34047067, 2420679945, 34206145, 215656, 214197, 4551796, 33949999, 4546347, 4554615, 2715730, 2754518, 2743092, 2725503, 2752609, 39038297, 33831808, 33827912, 2719253, 2756527 )

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  • Iphone build error - literal-pointer symbol(s) not found

    - by Nick
    Sorry I imagine I'm missing something basic here. Before I write up a bunch of details on the specifics of the class I'd appreciate a nudge or smack on the head about the meaning of this build error. I have a subclass of NSObject SiteAnnotation that should be conforming to the MKAnnotation protocol. It is #imported in the ViewController in question When I try to alloc/init: SiteAnnotation *thisAnnotation = [[SiteAnnotation alloc] init]; This is the build error which occurs: Link /build/Debug-iphonesimulator/testbed.app/testbed ".objc_class_name_SiteAnnotation", referenced from: literal-pointer@__OBJC@__cls_refs@SiteAnnotation in MapViewController.o Symbol(s) not found collect2: ld returned 1 exit status Any tips appreciated.

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  • deriving from NSTabViewItem

    - by Jonny
    I'm writing a Cocoa app. One dialog has 3 tabs, some of the tabs needs more loading time, so I want to load them lazily. Since each Tab is a NSTabViewItem class, so I'm trying to derive from it and overriding its view property. In the view getter method, I use a ViewController to load a view and returns out. In Debugging, I found NSTabViewItem -view method is get called correctly, but after that NSTabView tries to set Initial FirstResponder and crashed with message: * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'In -[NSTabViewItem setInitialFirstResponder:], the first responder must descend from the tab view item's view. (Item: Invalid responder: )' I tried to override the -initialFirstResponder method to return a sub-view of my loaded view, but it still crashes the same place. does anyone know how to get it work correctly? Also is it correct way to do this by deriving the NSTabViewItem? thanks! -Jonny

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  • Why Does the iPad Toolbar Refuse to Reappear When Orientation Changes?

    - by dugla
    I have a fullscreen OpenGL iPad app that behaves correctly for all orientation changes. I now want to add a UIToolbar programmatically and while it appears correctly in launch orientation - portrait in the Xcode simulator - it dissapears when the orientation changes to landscape. Change the orientation back to portrait and the Toolbar reapppears. Huh? - (void)loadView { NSLog(@"EAGL ViewController - load View"); CGRect frame = [[UIScreen mainScreen] applicationFrame]; EAGLView *eaglView = [[[EAGLView alloc] initWithFrame:frame] autorelease]; self.view = eaglView; [[NSBundle mainBundle] loadNibNamed:@"Toolbar" owner:self options:nil]; NSLog(@"%@", [[self.toolbar class] description]); [self.view addSubview:self.toolbar]; [self.view bringSubviewToFront:self.toolbar]; } What have I failed to do here? Thanks, Doug

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  • how to make a universal iphone/ipad app programmatically, navigation controller for iphone and spli

    - by arash13
    I couldn't find a good answer anywhere. I am using a UINavigationController for my iphone app and everything is done 100% programmatically no xibs. So i am trying to port my app to ipad, i tried to use a UISplitViewController and link my existing tableView and etc.. Now, i am not sure where should i have the logic of my program separating the viewcontroller for iphone or ipad.. do i setup my main file to use a different appdelegate or i use a same appdelegae and have the condition set up there ? now beside this, whenever i try to complile my app on the simulator it does not recognize the uisplitview and even the condition in which i check if the class exists. can please someone put me in the right direction.. and remember i am not using xibs?

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  • Adding C++ Object to Objective-C Class

    - by Winder
    I'm trying to mix C++ and Objective-C, I've made it most of the way but would like to have a single interface class between the Objective-C and C++ code. Therefore I would like to have a persistent C++ object in the ViewController interface. This fails by forbidding the declaration of 'myCppFile' with no type: #import <UIKit/UIKit.h> #import "GLView.h" #import "myCppFile.h" @interface GLViewController : UIViewController <GLViewDelegate> { myCppFile cppobject; } @end However this works just fine in the .mm implementation file (It doesn't work because I want cppobject to persist between calls) #import "myCppFile.h" @implementation GLViewController - (void)drawView:(UIView *)theView { myCppFile cppobject; cppobject.draw(); }

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  • UIView or UIViewController for custom View

    - by Daniel A. White
    What is the best way to create a custom UIView that I can consume in Interface Builder? Create a custom UIView in Interface Builder and inherit from UIView in a code file, then somehow use it in another UIView ala like a control. (How do I do this?) Create a custom UIView in Interface Builder and have a custom UIViewController wire it up. In my main ViewController, place the new view. Basically, I am trying to create a reusable display view and would like a quick way to change it across all my instances with minimal effort.

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  • Autoresizing subclassed UITableViewCell subviews

    - by JustinXXVII
    I've subclassed UITableViewCell and incorporated some subviews via the layoutSubviews method. All views are allocated and initiated in the initWithStyle method, and frames are set in the layoutSubviews method, like so: initWithStyle:... { UILabel *myLabel = [[UILabel alloc] initWithFrame:CGRectZero]; myLabel.someProperties = Configured; [self.contentView addSubview:myLabel]; layoutSubviews { CGRect labelRect = CGRectMake(10.0f, 5.0f, 35.0f, 180.0f); myLabel.frame = labelRect; Setting the shouldAutoRotateOrientation to YES in the viewController rotates the NavigationController, tableView and UIToolbar appropriately, but the contents of the tableViewCells don't move. I'm not clear on where or what to add as far as AutoResizingMasks. The combinations I've tried so far haven't done anything. Can someone give me a hand? Thanks!

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  • UIScrollView on iPad isnt working

    - by Magician Software
    Hi There, can anyone tell me what I am doing wrong. I am trying to load a UIScrollView in a UIView. I am using IB to load the items and what not. the come I am using in the ViewController isnt working. :( I have it under the ViewDidLoad - (void)viewDidLoad { [scrollView setScrollEnabled:YES]; [scrollView setContentSize:CGSizeMake(768, 1300)]; } Whats wrong with it. It builds fine. While I am asking, how do you set the scroll view to strech when the iPad is rotated? Thanks for your help

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  • Subview position issue after UIOrientation (rotation) change

    - by asadqamber
    I have a viewController and have added a subview in it programatically. secondView.autoresizingMask = UIViewAutoresizingFlexibleWidth; [self.view addSubview:secondView]; I guess when the device rotates, my mainViewController knows that orientation changed, but the subview (secondView) inside the mainViewController does not know this, so I change its frame to landscape size in willRotateToInterfaceOrientation. secondView.frame = CGRectMake(0, 0, 480 , 260); This does not set in the correct position, it's 11 px below the NavigationBar. Why does it start from 11 px below the navigation bar? The navigation bar shrinks when we move from portrait to landscape mode and its because of this that my subview is 11px below.

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  • problem with IBoutlet UITableView connection

    - by ideafactory
    Hi,I'm having a problem with IBoutlet UITableView connection. It seems that the IBOutlet isn't connected to the TaleView. I set the delgate and the datasource to the files owner and set the iboutlet to the tableview in the nib. The tableview is well initialized. I just want to do some reloadData and it's not working. I try to do some deselectRow just to see if it isn't reloadData problem but it doesn't deselect so i assume that the iboutlet isn't associated with my tableview. This table view is in a viewcontroller that is called as a modalViewController. Here is some code: My .h file: @interface AddEditProjectsViewController : UIViewController <UITableViewDelegate, UITableViewDataSource, UIActionSheetDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate, UITextViewDelegate, UIAlertViewDelegate>{ IBOutlet UITableView *addEditProjectTable; } @property (nonatomic, retain) IBOutlet UITableView *addEditProjectTable; @end My .m file: - (void)viewWillAppear:(BOOL)animated { (...) [addEditProjectTable reloadData]; [super viewWillAppear:animated]; Thanks for any help! :)

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  • iPhone: Howto get notified when an UIView becomes visible

    - by arne_
    Is there a way to get a notification, a callback or some other means to call a method whenever a UIView becomes visible for the user, i.e. when a UIScrollview is the superview of some UIViews, and the ViewController of such a UIView shall get notified when its view is now visible to the user? I am aware of the possible, but not so elegant solution of checking to which position the ScrollView scrolled (via UIScrollViewDelegate-methods) and compute if either one of the subviews is visible... But I'm looking for a more universal way of doing this.

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  • How to Unload a popped view controller?

    - by RexOnRoids
    Using a navigation based view hierarchy. I have a root view controller, and multiple view controllers that branch out from the same when a button is pressed. When a user presses the back button on the UINavigationBar, the current viewcontroller is popped and the display animates back to the rootviewcontroller. The problem is, I want the viewcontrollers to UNLOAD whenever they are popped. Seems like they are not unloading because when I go back to them they are still in the state they were when they were popped. How do I unload the viewcontrollers after navigating back to the rootviewcontroller?

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  • Get a image from a uiview

    - by Monobono
    Hi I want to perform a shrink animation on a UITableVIew. I experimented a bit and found out that the animation runs much faster when I shrink a UIImageView with an image of the current state of the tableview instead of shrinking the table view itself. I grabbed the image in a method in my main viewcontroller prior to the animation: UIGraphicsBeginImageContext(mainTableView.bounds.size); [resizeContainer.layer renderInContext:UIGraphicsGetCurrentContext()]; UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); Works like a charm, at least almost. On very rare occasions I get weird graphic glitches, where the UIImage starts to overlap a toolbar that lies underneath it. I just want to make sure that I am getting the image in the right way. I am laking the necessary understand of GraphicContexts to be sure about it. To cut a long story short, is my code correct? Thx

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  • [UITableViewController loadView] loaded the "PersonnalDetails" nib but didn't get a UITableView.

    - by tak
    I am trying to load a new view with the following code - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { PersonnelDetails *detailViewController = [[PersonnelDetails alloc] initWithNibName:@"PersonnelDetails" bundle:[NSBundle mainBundle]]; [self.navigationController pushViewController:detailViewController animated:YES]; [detailViewController release]; } inhertance :- PersonnelDetails inherits UITableViewController but i am getting an exception : Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '-[UITableViewController loadView] loaded the "PersonnalDetails" nib but didn't get a UITableView.' even though i have a UITableView in the PersonnalDetails nib and also i have connected the view outlet of PersonnelDetails(viewController) to the UITableView. what can be the posible cause?

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  • Custom UITableviewcell shows "fatal error: Can't unwrap Optional.None" issue in swift

    - by user1656286
    I need to load a custom cell in a UITableView. I created a custom subclass of UITableViewCell named "CustomTableViewCell". I have added a UITabelViewCell to the tableview (using drag and drop) as shown in figure. Then in file inspector I set the class of that UITabelViewCell to be "CustomTableViewCell". Here is my code: class ViewController: UIViewController,UITableViewDelegate,UITableViewDataSource { @IBOutlet var tableView : UITableView var items = String[]() override func viewDidLoad() { super.viewDidLoad() items = ["Hi","Hello","How"] self.tableView.registerClass(CustomTableViewCell.self, forCellReuseIdentifier: "CusTomCell") // Do any additional setup after loading the view, typically from a nib. } func tableView(tableView: UITableView!, numberOfRowsInSection section: Int) -> Int{ return items.count } func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell!{ var cell:CustomTableViewCell = self.tableView.dequeueReusableCellWithIdentifier("CusTomCell") as CustomTableViewCell cell.labelTitle.text = items[indexPath.row] return cell; } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } } When I run my code, I get the following error: "fatal error: Can't unwrap Optional.None" as seen in the image.

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  • Rotate image in Quartz? Image is upside down! (iPhone)

    - by Johannes Jensen
    I don't want to transform the ENTIRE context. I'm making a game with Quartz, and I'm drawing my player with lines, rects and ellipses. And then I have diamong.png which I rendered at 0,0 in the top left of the screen. Problem is... It renders upside down! How would I rotate it 180 degrees? Here's some of my code: CGImageRef diamondImage = CGImageRetain([UIImage imageWithContentsOfFile: [[NSBundle mainBundle] pathForResource:@"Diamond.png" ofType:nil]].CGImage); CGContextDrawImage(context, CGRectMake(0, 0, 32, 24), diamondImage); If it's of any help, I'm using Landscape mode, with home button to the right. It's defined both in my .plist, and in my ViewController's -shouldAutorotateToInterfaceOrientation:interfaceOrientation: How would I rotate/transform it?

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  • UILabel reset after Autorotate

    - by MB
    Hi, I have a UILabel in a view that is set by calling a method against my view controller. The app is a TABBar app and the VC is in the MORE section. When I rotate the phone the label disappears (don't mind that) when I rotate back the label is showing all .......... (the value it is set to in the XIB) I added a line to set the label in the shouldAutoRotateToOrientation method lblProductTxt.titleLabel.text = self.productText; when autorotating what viewcontroller methods are being called. ?? the shouldAutoRotateToOrientation method doesn't get called when the VC is in the More section but when I move it it does get called but has no affect on the labeltext

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