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  • iPhone UIView element similar to the lock screen

    - by Travis
    Does anyone know if there is an open source project for an UIView element that acts in a similar way to the lock screen for the iPhone. I am working on an app that has some sensitive data, and I want to add another layer of comfort for users, to be able to setup a 4 digit pin number on the app. I've seen apps like LoseIt and Weightbot that have similar functionality. There isn't any element for this in the UI Library from what I've been able to find, and was hoping some kind soul might have open sourced something similar to this. Thanks in advance!!!

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  • Problem with NSString

    - by Kassar
    I have a problem with NSString in dynamic binding ... I manipulate with Facebook library, when i'll share my story i should make an instance of FBStreamDialog and charge its attributes with values of the story then show it, like this: FBStreamDialog* dialog = [[[FBStreamDialog alloc] init]autorelease]; dialog.delegate = self; dialog.userMessagePrompt = @"prompt"; NSString* sss=@"{ \"name\":\"%@\", \"href\":\"%@\", \"caption\":\"%@\", \"description\":\"%@\" , \"media\":[{ \"type\":\"image\", \"src\":\"%@\", \"href\":\"%@\" }] }"; dialog.attachment = [NSString stringWithFormat:sss,@"title",@"http://www.docs.com/hi.html",@"caption",@"summary",@"http://www.images.com/206.jpg",@"http://www.images.com/206.jpg"]; NSLog(@"ATTACHMENT: %@",dialog.attachment); The code above is running well. But my problem is when i want to charge these attributes dynamically like this: BStreamDialog* dialog = [[[FBStreamDialog alloc] init]autorelease]; dialog.delegate = self; dialog.userMessagePrompt = @"prompt"; NSString* sss=@"{ \"name\":\"%@\", \"href\":\"%@\", \"caption\":\"%@\", \"description\":\"%@\" , \"media\":[{ \"type\":\"image\", \"src\":\"%@\", \"href\":\"%@\" }] }"; dialog.attachment = [NSString stringWithFormat:sss,story.title,story.link,story.caption,story.summary,story.imagelink,story.imagelink]; NSLog(@"ATTACHMENT: %@",dialog.attachment); It's running without crash but it doesn't share the story it share a blank one !!! Although, it shows in the console (output of NSLog) the value of attachment is true !!! Could you plz help me. Sorry for my english.

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  • UIImageView Centering Problem.

    - by sagar
    To understand my problem let's follow this steps. Open - XCode - New Project - View based application. Open View Controller.xib file. Drag an image-view into viewController's view. Place that image view on center of viewController's view. Apply size of 125x125 to image-view. Take any image with dimension of 320 width & 460 height. Drag that image into your application resources directory. Now, Again back to .xib File & select image-view Set image (which is in your resources) to image-view Set Image-view Mode to - Center Ok. Let me explain the situation now. after performing all above steps - image-view has an image which is larger than image-view's size. However, Image-view places that image on center & in View controller image-view is looking proper ( not scaled ). But When you run your application, image-view will be displayed in size of 320x460. ( but it is not actually scaled. ) Now, I can't find the reason, why interface builder is displaying something else & simulator/iphone is displaying something else ? My Query. I want the image's center portion within image-view no matter what image size is. Thanks in advance for sharing your knowledge. Sagar.

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  • iPhone write to file (alternative directory)

    - by strider2k
    New to iPhone 3.2, Apple introduced File-Sharing support. Details can be found at https://developer.apple.com/iphone/library/releasenotes/General/WhatsNewIniPhoneOS/Articles/iPhoneOS3_2.html#//apple_ref/doc/uid/TP40009337-SW1 . Now, most examples floating around in the web demonstrates writing to the documents directory. What if I want to write files from my app but I don't want the user to be able to see it via iTunes? I'm looking at the Files and Networking section of the iPhone OS Programming Guide and I'm unsure what would be a good alternative to the documents directory for writing files to hide from the user and not be rejected by Apple's review team.

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  • Controls in UIActionSheet are positioning wrong

    - by Dave
    I need to display a pop with a UISwitch and a Done button when user taps on a button and save the state of the switch when the done button in the pop up is tapped. So I use UIActionSheet to do this - sheet = [[UIActionSheet alloc] initWithTitle:@"Switch Setting" delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:@"Done", nil]; theSwitch = [[UISwitch alloc] init]; [sheet addSubview:theSwitch]; [sheet showInView:self.view]; - (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex { if (buttonIndex == actionSheet.firstOtherButtonIndex) { theSwitch .on? NSLog(@"Switch is on") : NSLog(@"Switch if off"); } } All this works great. I have problem with positioning. Unfortunately, I don't have a screen shot at the moment to post here. But the switch appears at the very top on the same line with the Action Sheet title and then below that is the Done button. Please someone help me how to position the switch below the Title and increase the Action Sheet size so it looks neat. I need this asap. Thanks.

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  • problem getting the height of a UIScrollView

    - by funkadelic
    hi, i am setting the size of a UIScrollView in viewDidLoad: but when I try to get the height of it, i am getting 0 in the console here is my code: - (void)viewDidLoad { [scrollView setContentSize:CGSizeMake(320,500)]; NSLog(@"scrollView: %@", scrollView); NSLog(@"scrollView.contentSize.height: %i", scrollView.contentSize.height); [super viewDidLoad]; } and in the console log i get scrollView: <UIScrollView: 0x4974110; frame = (0 0; 320 367); clipsToBounds = YES; autoresize = RM+TM; layer = <CALayer: 0x4974010>> scrollView.contentSize.height: 0 Shouldn't scrollView.contentSize.height be returning 367? On a related note, i specified the height to be 500 via [scrollView setContentSize:], but that doesn't appear to be applied?

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  • How to get arc4Sin() output into label/NSString

    - by Moshe
    I'm trying to take the output of arc4sin and put it into a label. (EDIT: You can ignore this and just post sample code, if this is too irrelevant.) I've tried: // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { [super viewDidLoad]; NSString *number = [[NSString alloc] stringWithFormat: @"%@", arc4random() % 9]; label.text = number; } I've created an IBOutlet for "label" and connected it. What's wrong here?

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  • How to set image on EAGL VIEW

    - by Viral
    hi, I want to put images from my photo library in to the EAGL view for some further processing. The image that are already in our resources folder will be taken by itself but mltiple or images from photo library can't. So any one knows how to put image on EAGL view in open GLES. Regtards viral

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  • Why doesn't this code work?

    - by orangecl4now
    SignView *tempVC = [[SignView alloc] initWithNibName:@"SignView" bundle:Nil]; [UIView beginAnimations:nil context:nil]; [UIView setAnimationTransition: UIViewAnimationTransitionCurlUp forView:self.view cache:YES]; [UIView setAnimationDelay:0.5f]; [UIView setAnimationDuration:2.0f]; [UIView commitAnimations]; [self presentModalViewController:tempVC animated:YES]; [tempVC passDataWithString:button2.titleLabel.text andColor:currentlySelectedColor isNightModeOn:nightMode.on]; The view slides up instead of Curling up. What am I doing wrong?

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  • Unable to pass variables from one view to another

    - by jerincbus
    I have a detail view that includes three UIButtons, each of which pushes a different view on to the stack. One of the buttons is connected to a MKMapView. When that button is pushed I need to send the latitude and longitude variables from the detail view to the map view. I'm trying to add the string declaration in the IBAction: - (IBAction)goToMapView { MapViewController *mapController = [[MapViewController alloc] initWithNibName:@"MapViewController" bundle:nil]; mapController.address = self.address; mapController.Title = self.Title; mapController.lat = self.lat; mapController.lng = self.lng; //Push the new view on the stack [[self navigationController] pushViewController:mapController animated:YES]; [mapController release]; mapController = nil; } But I get this when I try to build: 'error: incompatible types in assignment' for both lat and lng variables. So my questions are am I going about passing the variables from one view to another the right way? And does the MKMapView accept latitude and longitude as a string or a number?

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  • How to download file from particular url???

    - by greshi gupta
    NSURL * url = @"http://192.168.100.161/UploadWhiteB/wh.txt"; NSData * data = [NSData dataWithContentsOfURL:url]; if (data != nil) { NSLog(@"\nis not nil"); NSString *readdata = [[NSString alloc] initWithContentsOfURL:(NSData *)data ]; I write this code to download a file from given url... but i get an error on line NSData * data = [NSData dataWithContentsOfURL:url]; uncaught exception....so please help me out..

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  • Passing NULL value

    - by FFXIII
    Hi. I use an instance of NSXMLParser. I store found chars in NSMutableStrings that are stored in an NSMutableDictionary and these Dicts are then added to an NSMutableArray. When I test this everything seems normal: I count 1 array, x dictionnaries and x strings. In a detailview controller file I want to show my parsed results. I call the class where everthing is stored but I get (null) returned. This is what I do (wrong): XMLParser.h @interface XMLParser : NSObject { NSMutableArray *array; NSMUtableDictionary *dictionary; NSSMutabletring *element; } @property (nonatomic, retain) NSMutableArray *array; @property (nonatomic, retain) NSMutableDictionary *dictionary; @property (nonatomic, retain) NSMutableString *element; XMLParser.m @synthesize array, dictionary, element; //parsing goes on here & works fine //so 'element' is filled with content and stored in a dict in an array //and released at the end of the file In my controller file I do this: controller.h @class XMLParser; @interface controller : UIViewController { XMLParser *aXMLParser; } @property (nonatomic, retain) XMLParser *aXMLParser; controller.m #import "XMLParser.h" @synthesize aXMLParser; - (void)viewDidLoad { NSLog(@"test array: %@", aXMLParser.array); NSLog(@"test dict: %@", aXMLParser.dictionary); NSLog(@"test element: %@", aXMLParser.element); } When I test the value of my array, a dict or an element in the XMLParser.h file I get my result. What am I doing wrong so I can't call my results in my controller file? Any help is welcome, because I'm pretty stuck right now :/

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  • How Can I Compress Texture in OpenGL on iPhone/iPad?

    - by nonamelive
    Hi, I'm making an iPad app which needs OpenGL to do a flip animation. I have a front image texture and a back image texture. Both the two textures are screenshots. // Capture an image of the screen UIGraphicsBeginImageContext(view.bounds.size); [view.layer renderInContext:UIGraphicsGetCurrentContext()]; image = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); // Allocate some memory for the texture GLubyte *textureData = (GLubyte*)calloc(maxTextureSize*4, maxTextureSize); // Create a drawing context to draw image into texture memory CGContextRef textureContext = CGBitmapContextCreate(textureData, maxTextureSize, maxTextureSize, 8, maxTextureSize*4, CGImageGetColorSpace(image.CGImage), kCGImageAlphaPremultipliedLast); CGContextDrawImage(textureContext, CGRectMake(0, maxTextureSize-size.height, size.width, size.height), image.CGImage); CGContextRelease(textureContext); // ...done creating the texture data [EAGLContext setCurrentContext:context]; glGenTextures(1, &textureToView); glBindTexture(GL_TEXTURE_2D, textureToView); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, maxTextureSize, maxTextureSize, 0, GL_RGBA, GL_UNSIGNED_BYTE, textureData); // free texture data which is by now copied into the GL context free(textureData); Each of the texture takes up about 8MB memory, which is unacceptable for an iPhone/iPad app. Could anyone tell me how can I compress the texture to reduce the memory. I'm a complete newbie to OpenGL. Any help would be appreciated!

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  • How to get headers into framework in Xcode?

    - by john146
    I'm trying to build a framework for MacOS in Xcode 3. It looks like it's building everything except the Headers directory according to the layout listed in the Apple documentation. I can't find anything that tells me what settings to use to get the build process to copy the headers into Headers directory in the framework, or alternately where I have to put those files. Any help? Thanks.

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  • How do I call an Obj-C method from Javascript?

    - by gnfti
    Hi all, I'm developing a native iPhone app using Phonegap, so everything is done in HTML and JS. I am using the Flurry SDK for analytics and want to use the [FlurryAPI logEvent:@"EVENT_NAME"]; method to track events. Is there a way to do this in Javascript? So when tracking a link I would imagine using something like <a onClick="flurryTrackEvent("Click_Rainbows")" href="#Rainbows">Rainbows</a> <a onClick="flurryTrackEvent("Click_Unicorns")" href="#Unicorns">Unicorns</a> "FlurryAPI.h" has the following: @interface FlurryAPI : NSObject { } + (void)startSession:(NSString *)apiKey; + (void)logEvent:(NSString *)eventName; + (void)logEvent:(NSString *)eventName withParameters:(NSDictionary *)parameters; + (void)logError:(NSString *)errorID message:(NSString *)message exception:(NSException *)exception; + (void)setUserID:(NSString *)userID; + (void)setEventLoggingEnabled:(BOOL)value; + (void)setServerURL:(NSString *)url; + (void)setSessionReportsOnCloseEnabled:(BOOL)sendSessionReportsOnClose; @end I'm only interested in the logEvent method(s). If it's not clear by now, I'm comfortable with JS but a recovering Obj-C noob. I've read the Apple docs but the examples described there are all for newly declared methods and I imagine this could be simpler to implement because the Obj-C method(s) are already defined. Thank you in advance for any input.

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  • persistent view controller

    - by derrichh
    Im building an iphone radio application and I want to have the controls, play, pause, stop, etc. in a tool bar (a custom view controller) at the bottom of the application. I want to keep this there throughout all the views so you can control the audio while navigating through the other parts of the application (multiple view/table controllers). Is there a way to create a view that stays in place like a tab bar?

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  • Cannot figure out how to get rid of memory leak

    - by Mark S.
    I'm trying to test for memory leaks in my iphone and I'm not having much luck getting rid of this one. Here is the code that is leaking. - (id)initWithManagedObjectContext:(NSManagedObjectContext *)aMoc delegate:(id)aDelegate runSync:(BOOL)aRunSync { if (self = [super init]) { self.moc = aMoc; self.settingsManager = [[VacaCalcSettingsManager alloc] initWithManagedObjectContext:self.moc]; self.delegate = aDelegate; calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar]; self.runSync = aRunSync; } return self; } It is leaking on the self.settingsManager = [[VacaCalcSettingsManager alloc] initWithManagedObjectContext:self.moc]; line. The self.settingManager instance variable is released in the dealloc method of the class. I'm not sure what other information would be pertinent. Please let me know and I can provide it. Thanks for any assistance. -Mark

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  • how do I take the URL and page title from a UITableView?

    - by nzsystem
    Hi I have an iPhone app that shows the user a UIWebView in the first view, what I am trying to do is allow the user to save what is essentially favorites to be saved and then displayed in a table view in the second view. To do this all i need is the page URL and also the Page Title to be saved to then populate the table view. Now here is the problem I am just starting to learn how to make iPhone apps and I have no clue what would be the best way to save it and how to get this information from the web view?

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  • how to add Done Button to dismiss the Number Pad

    - by mac
    I followed the tutorial http://www.neoos.ch/news/46-development/54-uikeyboardtypenumberpad-and-the-missing-return-key to dismiss the number pad, this tutorial add the button as sub view to the number pad, my problem is, in the same view i am using the text field to enter text also,so, how to differentiate the number field, and text field. so that i can hide the button view accordingly. thanks in advance.

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  • set different images to uitableview cell

    - by Sudha
    I am making an app in which one of the view has a tableview. Tableview cell has two conditions. There are two images which are going to be set on uitableview cell according to the condition i.e. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{ NSString *que =[[userqueries objectAtIndex:indexPath.row]objectForKey:@"question"]; NSString *ans =[[userqueries objectAtIndex:indexPath.row]objectForKey:@"answer"]; static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil){ cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease]; cell.imageView.image=nil; if ((que.length!=0)&&(ans.length!=0)) { UIImageView* imag = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 320, 75)]; imag.image = [UIImage imageNamed:@"ques.png"]; [cell.contentView addSubview:imag]; questext = [[UITextView alloc]initWithFrame:CGRectMake(10, 0, 300, 35)]; questext.backgroundColor = [UIColor clearColor]; questext.delegate = self; questext.tag = 101; questext.textAlignment = UITextAlignmentLeft; questext.editable = NO; questext.scrollEnabled = YES; [cell addSubview:questext]; anstext = [[UITextView alloc]initWithFrame:CGRectMake(10, 37, 300, 35)]; anstext.backgroundColor = [UIColor clearColor]; anstext.delegate = self; anstext.tag = 102; anstext.scrollEnabled = YES; anstext.textAlignment = UITextAlignmentLeft; anstext.editable = NO; [cell addSubview:anstext]; } else { UIImageView* imag = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 320, 40)]; imag.image = [UIImage imageNamed:@"answ.png"]; [cell.contentView addSubview:imag]; onlyques = [[UITextView alloc]initWithFrame:CGRectMake(10, 0, 300, 35)]; onlyques.backgroundColor= [UIColor clearColor]; [onlyques setScrollEnabled:YES]; onlyques.delegate = self; onlyques.tag = 103; onlyques.textAlignment = UITextAlignmentLeft; onlyques.editable = NO; onlyques.scrollEnabled = YES; [cell addSubview:onlyques]; } } questext = (UITextView*)[cell viewWithTag:101]; questext.text = que; anstext = (UITextView*)[cell viewWithTag:102]; anstext.text = ans; onlyques = (UITextView*)[cell viewWithTag:103]; onlyques.text = que; return cell; } But image is not appearing properly. As I scroll up and down the table view ,images get changes automatically. Please look upon my code and help me in finding the error. second image is when I scroll up and down the table view and first image is in the starting. please help me. if any one knows how to load different images to uitableview cell. thanks in advance.

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