Search Results

Search found 19130 results on 766 pages for 'tariq iphone programmer'.

Page 447/766 | < Previous Page | 443 444 445 446 447 448 449 450 451 452 453 454  | Next Page >

  • Position a UIView at the middle of a UITableView with CGRectZero frame

    - by Thomas Joulin
    Hi, I have a UITableViewController view a UITableView that I alloc/init with a frame of CGRectZero : self.tableView = [[UITableView alloc] initWithFrame:CGRectZero style:UITableViewStyleGrouped]; I want to add a view at the middle of the tableView (a loading view with a UIActivityIndicatorView and a UILabel), but I don't know how to position it, since I don't know the tableView frame. x = (self.tableview.frame.size.width - loadingView.frame.size.width) / 2.0; y = (self.tableview.frame.size.height - loadingView.frame.size.height) / 2.0; [loadingView setCenter:CGPointMake(x, y)]; I did init my tableView with CGRectZero frame so it can take the whole place available on screen (which it did), but I thought its frame would update or something. Any ideas ? Thanks !

    Read the article

  • Objective C: Which is changed, property or ivar?

    - by Wilhelmsen
    Worrying about duplicates but can not seem to find and answer I can understand in any of the other posts, I just have to ask: When I have in my .h: @interface SecondViewController : UIViewController{ NSString *changeName; } @property (readwrite, retain) NSString *changeName; then in my .m @synthesize changeName; -(IBAction)changeButton:(id)sender{ changeName = @"changed"; } Is it the synthesized property or the instance variable that get changed when I press "changeButton" ?

    Read the article

  • Custom cell just failing

    - by ct2k7
    Hi, I'm trying to use a custom UITableViewCell, and I've placed it in the same nib file as the UITableView controller. For this, the files are: NTItems.h, NTItems.m and NTItems.xib. I have defined the cell in the header file: IBOutlet UITableViewCell *cellview; and I've correctly applied the property: nonatomic, retain so it's there. In the m file - I've synthesized the variable device and am using this to get the custom cell: if(cell == nil){ cell = self.cellview; } However, when I load the table, I get this horrible mess: There should be more than 1 cell showing data as well. On another note, how do I map the labels to the text which is to be displayed?

    Read the article

  • Can I use the whatthetrend.com API to get daily and weekly twitter trends?

    - by Charles S.
    The twitter API allows me to receive daily trends and weekly trends (in addition to current trends, of course) as either JSON or XML. Is there an equivalent with the whatthetrend.com API? I don't see a method/parameter at first glance but I wanted to see if anyone out there knew a way... http://api.whatthetrend.com/api There's a method to lookup trend definition by keyword so I guess I could use that based off the Twitter API but I'd rather just load all the data at once rather than have to remotely access the API every time I want to look up a definition. Thanks

    Read the article

  • Why Doesn't UIWebView release all of its memory?

    - by Theory
    I have a graphic-intensive iPad app that features a UIWebView. Using the simulator (iOS 4.2.1), I can see Real Mem increase quite a lot as I browse. The more I browse, the more RAM it uses. When I close the UIWebView and release it, some of the memory it used is freed, but not all of it. This is annoying. Okay, so maybe it's because it isn't deallocated right away. Fine. But then I would expect the system to do some cleanup when there's a memory warning. However, if I browse around, then close the UIWebView (and release it), then trigger a memory warning in the simulator, Real Mem does not change! WTF? So why is this? Why isn't UIWebView better at releasing memory back to the system? And why doesn't it appear to respond to memory warnings? Am I missing something?

    Read the article

  • How to manually throw a compiler error in GCC and Xcode

    - by coneybeare
    In xcode, while compiling apps with gcc, I want to throw compilation time errors if things like NSZombieEnabled is on for a distribution release, thus ensuring that compilation will fail and I won't accidentally do something stupid. I did some googling, but could not figure out how to cause the compiler to bail if a certain condition is met. Surely it must be easy, am I just not finding it?

    Read the article

  • NSAlert pops up for 3 times

    - by Marco
    Hello community i have a big problem. i implemented an NSAlert in the viewDidLoad() of my app: UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title message:alertMessage delegate:self cancelButtonTitle:ok otherButtonTitles:nil]; But the Alert pops up for 3 times, and then i can klick on it. Could it be that the viewDidLoad() starts for 3 times? This is the viewDidLoad in the rootViewController, that manages the views: - (void)viewDidLoad { Kundenkarte *kartenAnsicht = [[Kundenkarte alloc] initWithNibName:@"Kundenkarte" bundle:nil]; kartenAnsicht.rootViewController = self; kartenAnsicht.viewDidLoad; self.map = kartenAnsicht; [self.view addSubview:kartenAnsicht.view]; [kartenAnsicht release]; // [super viewDidLoad]; } kartenAnsicht is the view where the problem is. I hope someone could help me because my ideas are over!

    Read the article

  • Cocoa-Created PDF Not Rendering Correctly

    - by Matthew Roberts
    I've created a PDF on the iPad, but the problem is when you have a line of text greater than 1 line, the content just goes off the page. This is my code: void CreatePDFFile (CGRect pageRect, const char *filename) { CGContextRef pdfContext; CFStringRef path; CFURLRef url; CFMutableDictionaryRef myDictionary = NULL; path = CFStringCreateWithCString (NULL, filename, kCFStringEncodingUTF8); url = CFURLCreateWithFileSystemPath (NULL, path, kCFURLPOSIXPathStyle, 0); CFRelease (path); myDictionary = CFDictionaryCreateMutable(NULL, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks); NSString *foos = @"Title"; const char *text = [foos UTF8String]; CFDictionarySetValue(myDictionary, kCGPDFContextTitle, CFSTR(text)); CFDictionarySetValue(myDictionary, kCGPDFContextCreator, CFSTR("Author")); pdfContext = CGPDFContextCreateWithURL (url, &pageRect, myDictionary); CFRelease(myDictionary); CFRelease(url); CGContextBeginPage (pdfContext, &pageRect); CGContextSelectFont (pdfContext, "Helvetica", 12, kCGEncodingMacRoman); CGContextSetTextDrawingMode (pdfContext, kCGTextFill); CGContextSetRGBFillColor (pdfContext, 0, 0, 0, 1); NSString *body = @"text goes here"; const char *text = [body UTF8String]; CGContextShowTextAtPoint (pdfContext, 30, 750, text, strlen(text)); CGContextEndPage (pdfContext); CGContextRelease (pdfContext);} Now the issue lies within me writing the text to the page, but the problem is that I can't seem to specify a multi-line "text view".

    Read the article

  • Why would a UIDatePicker with no functionality, added to my app via IB, cause my app to crash?

    - by BeachRunnerJoe
    I just added a UIDatePicker to my iPad app using IB, linked it to its outlet in the code, saved it in IB, added the UIPickerViewDelegate to my UIViewController in the code, as well as added the UIDatePicker outlet in code. When I build and run, the app launches, but will crash intermittently when I attempt to open the popover view that contains the datepicker. I say intermittently because the popover view will occasionally open successfully, but never more than once (it always crashes the second time you open the popover, if it doesn't crash the first time). Also, in the console, I get the following messsage objc[594]: FREED(id): message lastClickRow sent to freed object=0x6015a70 Why is this happening and how can I fix it? What does that console message indicate? It may be worth mentioning that the popover view also contains a table view along with the datepicker control. Thanks so much in advance for your help!

    Read the article

  • How much should the AppDelegate do?

    - by Rudiger
    I'm designing quite a large App and on startup it will create sessions with a few different servers. As they are creating a session which is used across all parts of the app its something I thought would be best in App Delegate. But the problem is I need the session progress to be represented on the screen. I plan to have a UIToolBar at the bottom of the main menu which I don't want to cover with the progress bar but cover the UIView above it.So the way I see it I could do it a few different ways. 1) Have the App Delegate establish the sessions and report the progress to the main menu class so it can represent it in the progress bar (will I have any issues doing this if the sessions are created in a separate thread?), 2) have the App delegate display the main menu (UIView with a bunch of buttons and UIToolBar) and have it track and display the progress (I have never displayed anything in the App Delegate but assume you can do this but its not recommended) or 3) have the App Delegate just push the main menu and have the mainMenu class create the sessions and display the progress bar. 4) I think the other way to do it is to create the sessions in a delegate class and have the delegate set to mainMenu rather than self (AppDelegate), although I've never used anything other then self so not sure if this will work or if I will be able to close the thread (through calling super maybe?) as its running in the AppDelegate rather than the delegate of the class. As I've kinda said before the sessions are being created in a class in a separate thread so it wont lock the UI and I think the best way is the first but am I going to have issues having it running in a separate thread, reporting back to the app delegate and then sending that message to the mainMenu view? I hope that all makes sense, let me know if you need any further clarification. Any information is appreciated Cheers,

    Read the article

  • UIPageControl design challenge

    - by Sheehan Alam
    My app has a UITabBarController that loads many different UINavigationControllers. I want a UIPageControl to switch between the different UINavigationControllers. Do I place the UIPageControl in my UINavigationController or in my appDelegate? Suggestions and best practices are welcome.

    Read the article

  • How to judge the color of UILabel?

    - by william-hu
    UILabel *templabel = [self.wallBoxArray objectAtIndex:i]; for( int i = 0 ; i < [self.wallBoxArray count]; i++) { if(templabel.backgroundColor == [UIColor greenColor]) { NSLog(@"the color isn green"); } } There are many label's in my array. They all initialized with green color. But i judged that way ,why cant print " the color isn't green.Thank you.

    Read the article

  • getting a tiled image collection on the iPad (deepzoom)

    - by Chris B
    I have a set of tiled image collections created via microsoft's deep zoom composer, and a silverlight app that currently consumes them for display via MultiScaleImage - it's all working pretty well - I'd just like to get some experience with iPad programming and have a couple of ideas for some ipad applications. All my ideas rely on me being able to display/manipulate these tiled image sets (on the iPad). I just picked up a iMac to facilitate this. I'm not seeing any objective-c / cocoa-touch libraries for this though, so am assuming I will have to roll my own. (Saw the seadragon ajax component, which is pretty slick, but I'm dealing with collections here, which it doesn't support. I would also like to roll this as a native app just to get the experience). The only open source project I found for displaying/manipulating the tiled image sets was Openzoom -a flash component. I'm not to familiar with actionscript either (python, java, c#, and c are the only languages I have really used), but briefly inspecting the code I didn't really have any issues with it and can probably use it for hints on how to swap the tiles in and out, etc.. But, as I'm pretty new to obj-c/cocoa-touch, some pointers in the right direction would be appreciated. 1) Are there any other projects out there I am missing, or is openzoom my best bet for some reference? 2) Should I be trying to do this display in the UIKit framework, or should I do it as an OpenGL display? 3) Any other suggestions/pointers that I didn't think to ask.

    Read the article

  • [iOS] becomeFirstResponder: automatically scroll to the UIControl that becomes first responder

    - by Manni
    I have a grouped UITableViewController with one section and many rows. Each cell consists of two elements: a UILabel with a description and a UITextField for an input. A form, I would say. On the bottom is a button "Next" the go to the next view. But before that, I validate the UITextField's: if the user hasn't filled a field, this field should get the focus, so that the user sees that he needs to enter something. I tried with this: [inputField becomeFirstResponder]; Remember, the button I pressed is on the bottom of my view and imagine that the UITextField is on the top. In this situation, the field doesn't get the focus because it is too far away. Now when I scroll up slowly and the field gets visible, the field becomes first responder and gets the cursor :-) Conclusion: The becomeFirstResponder worked, but does not exactly do what I wanted to. I don't want to scroll up with my finger, the field should get the focus and visible automatically. Is there any way to "jump" directly to my field? Use an alternative to becomeFirstResponder? Scroll to my field automatically? Thanks for your help!

    Read the article

  • Why is this leaking memory? UIImage `cellForRowAtIndexPath:`

    - by Emil
    Hey. Instruments' Leaks tells me that this UIImage is leaking: UIImage *image = [[UIImage alloc] initWithContentsOfFile:[imagesPath stringByAppendingPathComponent:[NSString stringWithFormat:@"/%@.png", [postsArrayID objectAtIndex:indexPath.row]]]]; // If image contains anything, set cellImage to image. If image is empty, try one more time or use noImage.png, set in IB if (image != nil){ // If image != nil, set cellImage to that image cell.cellImage.image = image; } image = nil; [image release]; (class cell (custom table view cell) also releases cellImage in dealloc method). I haven't got a clue of why it's leaking, but it certainly is. The images gets loaded multiple times in a cellForRowAtIndexPath:-method. The first three cells' image does not leak (130px high, all the space avaliable). Leaks gives me no other info than that a UIImage allocated here in the code leaks. Can you help me figure it out? Thanks :)

    Read the article

  • Memory Leaks when touching UITableViewCells and poping off view.

    - by Falcon
    Hi All, I'm currently having a problem where the leaks tool is reporting a slew of memory leaks after clicking on cells within a UITableView and then hitting the back button and popping off the view. Majority of the leaks reported can not be traced back to any specific location in my code, they are: Leaked Object # Address Size Responsible Library Responsible Frame NSCFArray 2 < multiple > 64 UIKit -[UITouch(UITouchInternal) UITouch 2 < multiple > 128 GraphicsServices PurpleEventCallback Malloc 48 Bytes 2 < multiple > 96 Foundation -[NSCFArray insertObject:atIndex:] UIDelayedAction 2 < multiple > 96 UIKit -[UILongPressGestureRecognizer startTimer] NSCFArray 2 < multiple > 64 UIKit -[UILongPressGestureRecognizer touchesBegan:withEvent:] Malloc 32 Bytes 2 < multiple > 64 Foundation -[NSCFArray insertObject:atIndex:] Malloc 16 Bytes 2 < multiple > 32 Foundation -[NSCFSet unionSet:] Now I have commented out all my code in any touch event functions that I have written and it still leaks if I click on the cell a few times and then hit the back button to return to the previous view. Any ideas on what might actually be the problem here? Thanks,

    Read the article

  • UITextView on iPad INCREDIBLY Slow

    - by Sj
    I have an NSMutableArray of custom views (that are pretty much 1 UITextView and 1 UILabel with a custom back ground image), these are created as they are need (I start with 2 (though the first one is only 2 UITextFields and the other is normal) of these). Now my issue here seems to be this: as soon as I try to edit any UITextView past the one in the 2nd view, it starts to run incredibly slow, not the app, just the textview. For example, as I type, the little blinky guy lags behind the text and when I click to copy/paste/cut/etc you can see the little balloon fly in from the upper left corner every time. I have run the static analyzer for leaks and come up with nothing and run it alongside some other the testing software in XCode and it does not appear to have any reason for this. Any help would be greatly appreciated.

    Read the article

  • setting target for disclosure button on subclassed UITableViewCell

    - by Toby Wilson
    I've created a subclass of UITableViewCell to create some custom appearance and UI functionality ('swipe to reveal delete button'). Some of the cells are disclosure/detail disclosure type, and have a UIButtonTypeDetailDisclosure etc added manually. I cannot use the table view controllers' UITableViewCellAccessory for row at index path method. The question is, how do I set the target of these manually added buttons so that they correctly send the didSelectRowAtIndexPath to their table view controller?

    Read the article

  • Custom Scrollbar for UITableView

    - by iFloh
    the iTunes song list display is a TableView that has a dotted scrollbar on the right which allows me to jump to a relative position of the list (i.e. if I click the bar at 2/3 down I am scrolled to the 66% position of the list. I want to do the same in my UITableView, but am not sure whether this is standard functionality that I can use (which class?) or whether this is a custom build ... If the latter, has someone got some samplecode that I could use as a template?

    Read the article

  • UITableViewController's TableView becomes NULL

    - by Travis
    I have UITableViewController (initiated by the Navigation-based app project template). I am overriding loadView and putting up an alternative view (w/ a UILabel and UIActivityIndicator) to display while the table's contents is loading. When the loading is done, I remove the loading view and try to display the table view but I see that it's NULL. So in the simulator I see my loading view and then when the loading's done the view disappears but my tableview never comes. I'm confused what the difference is between self.view and self.tableView in my UITableViewController and how I can exchagn

    Read the article

  • NSInvocationOperation and main thread

    - by kpower
    Imagine that I have a view with some UIKit object as its subview (for example, UIActivityIndicatorView - this doesn't matter). This view also has a selector, called doSomething, which somehow manages UIKit object (in our example it can start or stop indicator view). I create NSInvocationOperation (from view's code parts) with initWithTarget:self selector:@selector(doSomething) object:nil. Then add it to NSOperationQueue. And all works fine. How?! It should be a new thread and non-thread-safe UIKit object! Why no error found (and no crash happened)?

    Read the article

< Previous Page | 443 444 445 446 447 448 449 450 451 452 453 454  | Next Page >