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  • Rotating and Moving a UIImageView (CocoaTouch)

    - by yar
    This code works to rotate: CGAffineTransform transform = CGAffineTransformMakeRotation(radians(lastAngle++)); anImage.transform = transform; and this code works to move my UIImageView CGRect frame = [anImage frame]; frame.origin.x+=1; frame.origin.y+=1; [anImage setFrame:frame]; but when I combine them, the image stretches out increasingly on each run through. Perhaps the frame should not be modified like this?

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  • Can't return a String value and append it...why?

    - by squeezemylime
    I am writing an app and am having problems returning a simple string value, and I'm not sure why. The function I am using (within a file called APIManager.m) is: - (NSString*) returnVenueUrl { NSString *venueUrl = [devEnvironment stringByAppendingString:@"venue/id/"]; return venueUrl; } I can return this properly by doing this in another .m file: APIManager *apiManager = [APIManager apiManager]; NSLog(@"view venue URL is here: %@", [apiManager returnVenueUrl]); But when I go to append a variable cast as a String onto it, I get nothing.. venueURL = [apiManager returnVenueUrl]; venueURL = [venueURL stringByAppendingString:venueId]; NSLog(@"the Full Venue URL is: %", venueURL); If anyone has any advice on how to fix this, it would be much appreciated!

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  • Clickable links in UILabel?

    - by lope
    Hi there, I have been searching for this for hours but I failed. I probably don't even know what should I be looking for. Many applications have text and in this text are web hyperlinks in rounded rect, when I click them UIWebView opens. What puzzles me is that they often have custom links, for example if words starts with # it is also clickable and aplication responds by opening another view. How can I do that? Is it possible with UILabel or do I need UITextView or something else? I really hope it is standard functionality and i don't need to subclass anything :/

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  • Referencing file on disk from NSManagedObject

    - by Kamchatka
    Hello, What would be the best way to name a file associated to a NSManagedObject. The NSManagedObject will hold the URL to this file. But I need to create a unique filename for my file. Is there some kind of autoincrement id that I could use? Should I use mktemp (but it's not a temporary file) or try to convert the NSManagedObjectId to a filename? but I fear there will be special characters which might cause problem. What would you suggest?

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  • Can't remove Default.png?

    - by Matt Winters
    Weird one... I had been fooling around with an initial splash screen but decided not to use it. But now, although I deleted Default.png from Resources, the splash screen still appears in the Simulator when I start the app. Default.png isn't in the project folder, I close and reopen Xcode, splash screen still there. Close ands reopen Simulator, splash screen still there. I remove the app from the Simulator, build, and the splash screen is still there Default.png. Any ideas?

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  • cant scroll the scrolview?

    - by Abhi_Iphone_Blackberry
    I have a problem with my UIScrollView. It's visible but I can't scroll it. CGRect frame = CGRectMake(20, 90,280,1000); scroll1=[[UIScrollView alloc]initWithFrame:frame]; scroll1.contentSize = CGSizeMake(280,1000); scroll1.backgroundColor=[UIColor grayColor]; //scroll1.delegate=scroll1; [scroll1 setUserInteractionEnabled:TRUE]; [scroll1 setPagingEnabled:TRUE]; [scroll1 setScrollEnabled:TRUE]; [scroll1 showsVerticalScrollIndicator]; Thanks in advance.

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  • GameKit Bluetooth Transfer Problem

    - by David Schiefer
    Hi, I am trying to send a file via Bluetooth using the GameKit framework. The problem I am having though is that I can only send one NSData object at a time, but I need to save it on the other end. this obviously isn't possible without knowing the filename, but i don't know how to transmit that. I've tried to convert it to a string NSData*data = [NSData dataWithContentsOfFile:urlAddress]; but i can only send one NSData object, not two. Has anyone come across this problem yet?

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  • When are dynamically loaded NIBs assigned frames and bounds data?

    - by thebossman
    In one of my UIViewControllers, I am calling initWithNibName:bundle: for several other UIViewControllers. I am grabbing the view property in each of those dynamically created controllers and placing them, one after the other, in my parent view. For instance, the y offset of viewControllerB should be equal to the height of viewControllerA. The y offset of viewControllerC should be equal to the height of viewControllerB, and so on. I am initalizing these nibs in viewDidLoad, yet none of them have any meaningful bounds or frame properties. The sizes and positions of each are all zero. Where is the 'correct' place to do this type of operation so that I can grab meaningful values from these properties?

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  • Problems with creating and using of delegate-protocols

    - by Flocked
    Hello, I have the problem that I have created a delegate protocol, but the necessary methods are not executed, although I have implemented the protocol in my header file. Here are the detailed explanation: I created an instance of my ViewController (TimeLineViewController), which will be displayed. This ViewController contains a UITableView, which in turn receives the individual Cells / Rows from one instance of my TableViewCell. So the ViewController creates an instance of TableCellView. The TableViewCell contains a UITextView, which contains web links. Now I want, that not safari opens the links, but my own built-in browser. Unfortunately TableViewCell can not open a new ViewController with a WebView, so I decided to create a delegate protocol. The whole thing looks like this: WebViewTableCellDelegate.h: @protocol WebViewTableCellDelegate -(void)loadWeb; @end Then I created a instance WebViewDelegate in the TableViewCell: id <WebViewTableCellDelegate> _delegate; In the .m of the TableViewCell: @interface UITextView (Override) @end @class WebView, WebFrame; @protocol WebPolicyDecisionListener; @implementation UITextView (Override) - (void)webView:(WebView *)webView decidePolicyForNavigationAction:(NSDictionary *)actionInformation request:(NSURLRequest *)request frame:(WebFrame *)frame decisionListener:(id < WebPolicyDecisionListener >)listener { NSLog(@"request: %@", request); [_delegate loadWeb]; } @end - (void)setDelegate:(id <WebViewTableCellDelegate>)delegate{ _delegate = delegate;} And in my TimeLineViewController I implemented the protocol with < and the loadWeb-metode: - (void)loadWeb{ WebViewController *web = [[WebViewController alloc] initWithNibName:nil bundle:nil]; web.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal; [self presentModalViewController: web animated:YES]; [web release]; } And when the instance of the TableViewCell will be created in the TimelineViewController: - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *MyIdentifier = @"MyIdentifier"; MyIdentifier = @"tableCell"; TableViewCell *cell = (TableViewCell *)[tableView dequeueReusableCellWithIdentifier:MyIdentifier]; if(cell == nil) { [[NSBundle mainBundle] loadNibNamed:@"TableViewCell" owner:self options:nil]; cell = tableCell;} [cell setDelegate:self]; //… } It is the first time I created a own delegate-protocol, so maybe there are stupid mistakes. Also I´m learnung Objective-C and programming generally only for 4 weeks. Thanks for your help! EDIT: I think i found the problem, but I dont know how to resolve it. I try to use [_delegate loadWeb]; in the subclass of the UITextView (because that is the only way i can react on the weblinks) and the subclass can´t use [_delegate loadWeb];. I tried this in a other methode and it worked.

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  • Changing background color on UIScrollView?

    - by Andreas Johannessen
    Hi How do I change the black/gray color to white? This is just a simple view with a UIView attached to the UIViewControllers property together a with a webview that fills the UIView. UPDATE Here's the code that works: - (void)loadView { UIWebView *webview = [[UIWebView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 320.0f, 416.0f)]; [webView setBackgroundColor:[UIColor whiteColor]]; self.view = webView; [webview release]; } Thanks in advance.

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  • Is there a way to hide the Android Device Chooser?

    - by janfsd
    Whenever I run my app I get the Android Device Chooser dialog: This is happening because I am using the Google APIs for 1.6 and trying to run the application on my Nexus one. Is there any way to make this automatically, or to not check the compatibility? Sometimes when I make a modification and quickly after I save and run the application, Eclipse will build the project and the Android Device Chooser dialog will show briefly and disappear and the app won't run. I have to click run again for it to work. Any workarounds?

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  • How to remove an observer for NSNotification in a UIView?

    - by sudo rm -rf
    Hello! I've added an observer in a custom UIView I've created under initWithFrame:. [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(updateZipFromLocation:) name:@"zipFoundFromLocation" object:nil]; The problem is, this view is a subview. When the view is loaded again, it calls the initWithFrame message again, thus adding two observers and so on. How can I remove the observer when the view is going to disappear? Since it is a UIView, it says that viewWillDisappear:(BOOL)animated is not a valid method. Any ideas?

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  • Urban Airship - not receving push notifications on device?

    - by Silent
    Hey guys just installed everything to my app tried to push but no messages appear the token for my device is saved so thats working, when i push the website says it sent but no message on device. Right now im using production certificate for push notification with a developer pervision and not the distrubution certificate. I tried cleaning the build and reinstalling but no luck since an extra app was installed from the same one. I used the code that is on the sample file tutorial i think thats all the detail dont know what to do next.

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  • Navigation and Tab Bar both are in app, which model to follow?

    - by iPhoneDev
    Which model should I use, if my First view in Login view (NO Tab required) and then all other views are under Tab Bar. So as a rule should I create Navigation based template coz First view uses only Navigation not Tab Bar or is there any other way around? Please suggest First Screen with Nav bar in Top (MUST Needed) Second Screen Tab Bar view:

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  • How do i set and get UIButtons' tag?

    - by Sam Jarman
    How do i set a tag for a button programmatically? I later want to compare to tags for a conclusion ive tried this -(IBAction)buttonPressed:(id)sender{ NSLog(@"%d", [sender tag]); } but that just crashes the app.... :( any other ideas? Cheers Guys Sam

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  • A NSMutableArray is destroying my life!

    - by camilo
    EDITED to show the relevant part of the code Hi. There's a strange problem with an NSMutableArray which I'm just not understanding... Explaining: I have a NSMutableArray, defined as a property (nonatomic, retain), synthesized, and initialized with 29 elements. realSectionNames = [[NSMutableArray alloc] initWithCapacity:29]; After the initialization, I can insert elements as I wish and everything seems to be working fine. While I'm running the application, however, if I insert a new element in the array, I can print the array in the function where I inserted the element, and everything seems ok. However, when I select a row in the table, and I need to read that array, my application crashes. In fact, it cannot even print the array anymore. Is there any "magical and logical trick" everybody should know when using a NSMutableArray that a beginner like myself can be missing? Thanks a lot. I declare my array as realSectionNames = [[NSMutableArray alloc] initWithCapacity:29]; I insert objects in my array with [realSectionNames addObject:[category categoryFirstLetter]]; although I know i can also insert it with [realSectionNames insertObject:[category categoryFirstLetter] atIndex:i]; where the "i" is the first non-occupied position. After the insertion, I reload the data of my tableView. Printing the array before or after reloading the data shows it has the desired information. After that, selecting a row at the table makes the application crash. This realSectionNames is used in several UITableViewDelegate functions, but for the case it doesn't matter. What truly matters is that printing the array in the beginning of the didSelectRowAtIndexPath function crashes everything (and of course, doesn't print anything). I'm pretty sure it's in that line, for printing anything he line before works (example): NSLog(@"Anything"); NSLog(@"%@", realSectionNames); gives the output: 2010-03-24 15:16:04.146 myApplicationExperience[3527:207] Anything [Session started at 2010-03-24 15:16:04 +0000.] GNU gdb 6.3.50-20050815 (Apple version gdb-967) (Tue Jul 14 02:11:58 UTC 2009) Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i386-apple-darwin".sharedlibrary apply-load-rules all Attaching to process 3527. Still not understanding what kind of stupidity I've done this time... maybe it's not too late to follow the career of brain surgeon?

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  • why drawRect method is not being called?

    - by user338322
    #import <UIKit/UIKit.h> @interface quartzViewController : UIViewController { IBOutlet UIView *myView; } @end #import "quartzViewController.h" @implementation quartzViewController -(void)drawRect:(CGRect)rect { CGContextRef context = UIGraphicsGetCurrentContext(); CGContextSelectFont(context, "Arial", 24, kCGEncodingFontSpecific); CGContextSetTextPosition(context,80,80); CGContextShowText(context, "hello", 6); //not even this works CGContextShowTextAtPoint(context, 1,1, "hello", 6); } - (void)viewDidLoad { [myView setNeedsDisplay]; [super viewDidLoad]; } Will I have to make any changed in the nib? Thanks

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  • Password test in 1st Tab.m to load a loginView gives class error?

    - by Michael Robinson
    I have a name and password in NSUserDefaults for login. I have this in my 1stTab View.m class to test for presence and load a login/signup loginView.xib modally if there is no password or name stored in the app. Here is the pulling of the defaults: -(void)refreshFields { NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; usernameLabel.text = [defaults objectForKey:kUsernameKey]; passwordLabel.text = [defaults objectForKey:kPasswordKey]; { Here is the Test: - (void)viewDidAppear:(BOOL)animated { [self refreshFields]; [super viewDidAppear:animated]; if ([usernameLabel.text length] == 0 || [passwordLabel.text length] == 0) { LoginViewController * vc = [[[LoginViewController alloc] initWithNibName:@"LoginView" bundle:nil] autorelease]; [self presentModalViewController:vc animated: false]; } else { [[self tableView ]reloadData]; } } Thanks in advance, I'm getting this error in the console: * Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[ setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key usernameLabel.'

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  • How to move a kinect skeleton to another position

    - by Ewerton
    I am working on a extension method to move one skeleton to a desired position in the kinect field os view. My code receives a skeleton to be moved and the destiny position, i calculate the distance between the received skeleton hip center and the destiny position to find how much to move, then a iterate in the joint applying this factor. My code, actualy looks like this. public static Skeleton MoveTo(this Skeleton skToBeMoved, Vector4 destiny) { Joint newJoint = new Joint(); ///Based on the HipCenter (i dont know if it is reliable, seems it is.) float howMuchMoveToX = Math.Abs(skToBeMoved.Joints[JointType.HipCenter].Position.X - destiny.X); float howMuchMoveToY = Math.Abs(skToBeMoved.Joints[JointType.HipCenter].Position.Y - destiny.Y); float howMuchMoveToZ = Math.Abs(skToBeMoved.Joints[JointType.HipCenter].Position.Z - destiny.Z); float howMuchToMultiply = 1; // Iterate in the 20 Joints foreach (JointType item in Enum.GetValues(typeof(JointType))) { newJoint = skToBeMoved.Joints[item]; // This adjust, try to keeps the skToBeMoved in the desired position if (newJoint.Position.X < 0) howMuchToMultiply = 1; // if the point is in a negative position, carry it to a "more positive" position else howMuchToMultiply = -1; // if the point is in a positive position, carry it to a "more negative" position // applying the new values to the joint SkeletonPoint pos = new SkeletonPoint() { X = newJoint.Position.X + (howMuchMoveToX * howMuchToMultiply), Y = newJoint.Position.Y, // * (float)whatToMultiplyY, Z = newJoint.Position.Z, // * (float)whatToMultiplyZ }; newJoint.Position = pos; skToBeMoved.Joints[item] = newJoint; //if (skToBeMoved.Joints[JointType.HipCenter].Position.X < 0) //{ // if (item == JointType.HandLeft) // { // if (skToBeMoved.Joints[item].Position.X > 0) // { // } // } //} } return skToBeMoved; } Actualy, only X position is considered. Now, THE PROBLEM: If i stand in a negative position, and move my hand to a positive position, a have a strange behavior, look this image To reproduce this behaviour you could use this code using (SkeletonFrame frame = e.OpenSkeletonFrame()) { if (frame == null) return new Skeleton(); if (skeletons == null || skeletons.Length != frame.SkeletonArrayLength) { skeletons = new Skeleton[frame.SkeletonArrayLength]; } frame.CopySkeletonDataTo(skeletons); Skeleton skeletonToTest = skeletons.Where(s => s.TrackingState == SkeletonTrackingState.Tracked).FirstOrDefault(); Vector4 newPosition = new Vector4(); newPosition.X = -0.03412333f; newPosition.Y = 0.0407479f; newPosition.Z = 1.927342f; newPosition.W = 0; // ignored skeletonToTest.MoveTo(newPosition); } I know, this is simple math, but i cant figure it out why this is happen. Any help will be apreciated.

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  • UIScrollView eating touches from its parent

    - by Jon Hull
    I have nested scrollViews (or rather a subclass of UIScrollView inside of an actual scrollview). I set the size of the inner view to its contentSize and set scrollEnabled = NO, because I only want the outside view scrolling. But the innerView occasionally eats touches and keeps the outerView from scrolling when it should. Is there something else I need to set to keep it from stealing the scrolling touches, but still allowing user interaction (e.g. editing a textView)?

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