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  • iPhone: Going from transformed layers to jpeg

    - by Devin Ross
    I have a bunch of images that are transformed (using touch gestures). I want to take the transformations the user does to the images and create a jpeg from it. (ie. if a user rotates a photo to the right, I want to get a jpeg of the photo rotate to the right just as the looks on screen). This takes into account that the photo could be bigger than whats displayed on screen too (no screenshots). I'm trying to use CGContext (CGContextRotateCTM specifically) but its not been too successful. Thanks for the help.

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  • iphone: re-sizing gradient after shift from portrait to landscape

    - by d_CFO
    In viewDidLoad, I can create a gradient with no problem: CAGradientLayer *blueGradient = [[CAGradientLayer layer] retain]; blueGradient.frame = CGRectMake(gradientStartX,gradientStartY,gradientWidth,gradientHeight); where gradientWith is device-defined as 320 or 1024 as appropriate. What I can’t do is resize it inside willRotateToInterfaceOrientation: -– and thus get rid of that empty black space off to the right -- after the user changes to landscape mode. (The nav bar and tab bar behave nicely.) (1) Recalibrating the gradient’s new dimensions according to the new mid-point, (2) using kCALayerMaxXMargin, and (3) employing bounds all looked like they would do the job. bounds looked a litte more intuitive, so I tried that. I don’t want to admit that I have made zero progress. I will say that I’ve been reduced to the brute force method of trying every permutation of self, view, layer, bounds, blueGradient, and CGRect(gradientStartX,gradientStartY,newGradientWidth,newGradientHeight) with zero success. This is not difficult. My lack of understanding is making it difficult. Anyone out there “Been there, done that”?

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  • coloring the clickable part of an image in iphone

    - by iphonecool
    Dear All, I'm assigned with new task for detecting the boundaries of an uiimage.That is, i want detect the boundary of an uiimage for coloring the particular part of an uiimage(for,part by part coloring). My Task is, I'm selecting the particular color among no.of colors and click on the particular part of the image the selectable part want to color.For that what should i do to achieve this. Please explain me how can i do this..what are the methods are used to achieve this. Thanks & Regards Renuga

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  • iPhone App Store Screenshot Order

    - by David L
    In iTunes Connect, the first screenshot (on left) is not showing up as the first screenshot in the App Store. In one case the 3rd screenshot in iTunes Connect shows up 1st on the App Store and in another case the 4th screenshot is 1st on the App Store. Does anyone know how to specify the order of images? I found this question, that says the 1st screenshot in iTunes Connect should be 1st on the App Store, but that is not the case for my 2 apps. iTunes connect screenshot order

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  • Keeping object in memory (iPhone SDK)

    - by Chris
    I am trying to create a UIImageView called theImageView in the touchesBegan method that I can then then move to a new location in touchesMoved. Currently I am receiving an "undeclared" error in touchesMoved where I set the new location for theImageView. What can I do to keep theImageView in memory between these two methods? - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { ... UIImageView *theImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"image.png"]]; theImageView.frame = CGRectMake(263, 228, 193, 300); [theImageView retain]; ... } - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { ... theImageView.frame = CGRectMake(300, 300, 193, 300); ... }

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  • How to give "Share with" option while opening documents in iphone mail

    - by rishabh
    So I've been going through the "Document Interaction Programming Topics for iOS". I've been able to achieve the "Open with myapp" option through Mail, was wondering how can I change the option to "Share with myapp" depending upon the file types specified? This is what I've tried: <key>CFBundleDocumentTypes</key> <array> <dict> <key>CFBundleTypeName</key> <string>Document</string> <key>LSHandlerRank</key> <string>Alternate</string> <key>CFBundleTypeRole</key> <string>Owner</string> <key>LSItemContentTypes</key> <array> <string>public.data</string> </array> </dict> </array>

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  • Capture Video in iPhone

    - by Timmi
    Hi, I used the following code to record video. UIImagePickerController *m_objpicker;=[[UIImagePickerController alloc] init]; m_objpicker.sourceType = UIImagePickerControllerSourceTypeCamera; m_objpicker.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeMovie]; // hide the camera controls //picker.showsCameraControls=NO; m_objpicker.delegate = self; //picker.allowsImageEditing = NO; m_objpicker.allowsEditing=NO; // and put our overlay view in //picker.cameraOverlayView=m_objOverlayView; [self presentModalViewController:m_objpicker animated:YES]; When we finish recording (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{ NSURL *m_objMediaURL=[info objectForKey:UIImagePickerControllerMediaURL]; [m_objpicker dismissModalViewControllerAnimated:YES]; } My doubt is, how to save the captured video to a location we specify. Also how to use UISaveVideoAtPathToSavedPhotosAlbum . What all things i need to change in my code so that i can save video to a specified location Thanks,

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  • Beginner iPhone Controller Question

    - by Besha
    I have a view that only has a button UIButton. First time clicking the button will draw a square above the button and the second time will replace the square with a circle. I need some help on writing the controller code. Please guide me to the right path. Thanks

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  • Basic string and value functions in Objective-C for iPhone

    - by David Maitland
    I have very little programming knowledge; only a fair bit in Visual Basic. How do I take a value from a text field, then do some simple math such as divide the value by two, then display it back to the user in the same field? In Visual Basic you could just do txtBoxOne.text = txtBoxOne.text / 2 I understand this question is more than one question and is very basic stuff, but I need to get my head out of Visual Basic and into where I should be :)

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  • iPhone loading view from nib only works once

    - by The Swissdude
    Hi Forum I'm trying to add a «loader-view» to my app which shows a spinner while doing stuff. This works fine the first time, but it doesn't work a second time. here's what I do: I have a viewController for the spinner (spinnerViewController) and a nib-file which I made in IB (spinner.xib). I load the nib in the viewDidLoad-event: spinnerView = [[spinnerViewController alloc] initWithNibName:@"spinner" bundle:nil]; [spinnerView retain]; spinnerView is declared in the .h-file (spinnerViewController *spinnerView;) next, I show the spinner-view: [self.view addSubview:spinnerView.view]; [self.view bringSubviewToFront:spinnerView.view]; which works fine... And now the trouble starts. No matter what I do, I can't show the spinner view again. I tried just hiding it (self.view sendSubViewToBack: spinnerView.view) which works for hiding, but when I try to bring it to the front again (self.view bringSubViewToFront: spinnerView.view) it doesn't work. I also tried removing the spinner-view and add it again with no success (within the spinnerViewController: [self.view removeFromSuperview] and to show it again [self.view addSubview... ) Any ideas what I'm doing wrong??? ;) Thanks for the help!

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  • how to load local html file into uiwebview iphone

    - by madcoderz
    I'm trying to load a html file into my UIWebView but it won't work. Here's the stage: I have a folder called html_files in my project. Then I created a webView in interface builder and assigned an outlet to it in the viewController. This is the code I'm using to append the html file: -(void)viewDidLoad { NSString *htmlFile = [[NSBundle mainBundle] pathForResource:@"sample" ofType:@"html" inDirectory:@"html_files"]; NSData *htmlData = [NSData dataWithContentsOfFile:htmlFile]; [webView loadData:htmlData MIMEType:@"text/html" textEncodingName:@"UTF-8" baseURL:[NSURL URLWithString:@""]]; [super viewDidLoad]; } That won't work and the UIWebView is blank. I'd appreciate some help.

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  • iphone - Images (slide show) and audio snychronization

    - by Qaiser
    I have 20 images and some audio. I would like to show a single image at a time and change the images at (unequal) intervals. For example, I want to show image 1 for 1.44 seconds and image 2 for 1.67 seconds and so on. Can someone suggest how to go about doing this please? What I have seen are examples that show how to setup an array of images with one field that denotes total time. This causes the images to show for an equal amount of time (each). ... and that not what I am looking for ...

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  • iphone keyboard won't appear

    - by d_CFO
    I can click on the field, and it momentarily turns blue, but those events plus makeFirstResponder together do not cause the keyboard to show on a UITextField. Plain vanilla code follows; I include it so others can discern what is NOT there and therefore what, presumably, with solve the problem. I put in leading spaces to format this question more like code, but the parser seems to have stripped them, thus leaving left-justified code. Sorry! UITextFieldDelete, check: @interface RevenueViewController : UIViewController <UITableViewDelegate, UITableViewDataSource, UITextFieldDelegate> { UILabel *sgmntdControlLabel; UISegmentedControl *sgmntdControl; UITableView *theTableView; } @property(nonatomic,retain) UISegmentedControl *sgmntdControl; @property(nonatomic,retain) UILabel *sgmntdControlLabel; Delegate and source, check. -(void)loadView; // code CGRect frameTable = CGRectMake(10,0,300,260); theTableView = [[UITableView alloc] initWithFrame:frameTable style:UITableViewStyleGrouped]; [theTableView setDelegate:self]; [theTableView setDataSource:self]; // code [self.view addSubview:theTableView]; [super viewDidLoad]; } Insert UITextField to cell, check. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { NSInteger sectionNmbr = [indexPath section]; NSInteger rowNmbr = [indexPath row]; NSLog(@"cellForRowAtIndexPath=%d, %d",sectionNmbr,rowNmbr); static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; } // Configure the cell. switch (sectionNmbr) { case 0: if (rowNmbr == 0) { cell.tag = 1; cell.textLabel.text = @"Label for sctn 0, row 0"; UITextField *tf = [[UITextField alloc] init]; tf.keyboardType = UIKeyboardTypeNumberPad; tf.returnKeyType = UIReturnKeyDone; tf.delegate = self; [cell.contentView addSubview:tf]; } if (rowNmbr == 1) { cell.tag = 2; cell.textLabel.text = @"Label for sctn 0, row 1"; cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton; } break; } } Successfully end up where we want to be (?), no check, (and no keyboard!): - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { NSLog(@"didSelectRowAtIndexPath"); switch (indexPath.section) { case 0: NSLog(@" section=0, rowNmbr=%d",indexPath.row); switch (indexPath.row) { case 0: UITableViewCell *cellSelected = [tableView cellForRowAtIndexPath: indexPath]; UITextField *textField = [[cellSelected.contentView subviews] objectAtIndex: 0]; [ textField setEnabled: YES ]; [textField becomeFirstResponder]; // here is where keyboard will appear? [tableView deselectRowAtIndexPath: indexPath animated: NO]; break; case 1: // code break; default: break; } break; case 1: // code break; default: // handle otherwise un-handled exception break; } } Thank you for your insights!

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  • Square collision detection problem (iPhone).

    - by thyrgle
    Hi, I know I've probably posted three questions related to this then deleted them, but thats only because I solved them before I got an answer. But, this one I can not solve and I don't believe it is that hard compared to the others. So, with out further ado, here is my problem: So I am using Cocos2d and one of the major problem is they don't have buttons. To compensate for there lack in buttons I am trying to detect if when a touch ended did it collide with a square (the button). Here is my code: - (void)ccTouchesEnded:(NSSet*)touches withEvent:(UIEvent*)event { UITouch *touch = [touches anyObject]; CGPoint location = [touch locationInView:touch.view]; NSLog(@"%f", 240-location.y); if (isReady == YES) { if (((240-location.y) <= (240-StartButton.position.x - 100) || -(240-location.y) >= (240-StartButton.position.x) + 100) && ((160-location.x) <= (160-StartButton.position.y) - 25 || (160-location.x) >= (160-StartButton.position.y) + 25)) { NSLog(@"Coll:%f", 240-StartButton.position.x); CCScene *scene = [PlayScene node]; [[CCDirector sharedDirector] replaceScene:[CCZoomFlipAngularTransition transitionWithDuration:2.0f scene:scene orientation:kOrientationRightOver]]; } } } Do you know what I am doing wrong?

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  • IPhone geo tagging data (SQLite or CoreData)

    - by user267980
    Hi. I'm about to build an app that has a database of places that has a location (lon/lat) and i'm about to build the dataModel. Actualy the app is very simple and all i want is to be able to fetch all places around the user (say in a radius of 30miles). Is it better to user SQLite (is there any geo-spatial extension out there)? I'll have around 5000 places in the database and i'm wondering where i can ask a database without affecting performances.

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  • iPhone view architecture question

    - by Joe
    So I have (for instance) three views: A: root view B: a view functionally identical to root C: a data entry view which collects a few piece of info What I'm trying to do is reuse C to supply the data it collects to either A or B. It should supply the data to whichever of the two it is pushed onto. The data for A is similar, but functionally distinct, to what collects for B. Right now, I'm passing data from C to A or B via a singleton class. What I'm trying to avoid is having two instances of C, one to supply data to A and B (because, in actuality, the program will have 5 total views like C. Does the question make sense?

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  • Class hierarchy of objective c in iphone -for xcode

    - by vijay
    i want to know what is the hierarchy we have in xcode first we have to get window and from that i have to understand completely if i use the class as property of another like this //child inherits the parents @interface child:parent { // parent *parentobject; child *child; } then what is the difference b/w the class behaviour while using the as property for another class then what is contrast between the inheritance and property

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  • search substring from mutable array in iphone

    - by user566431
    how to search substring from mutable array? NSMutableArrray names having string values, searchText is a substring to search from name array values. for (NSString *sTemp in names) { NSRange titleResultsRange = [sTemp rangeOfString:searchText options:NSCaseInsensitiveSearch]; //NSLog(@"sTemp = %@, searchText = %@",sTemp,searchText); NSLog(@"%@",titleResultsRange.length); if (titleResultsRange.length > 0) [Items addObject:sTemp]; }

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  • iPhone. Open application during call

    - by immuner
    Is there any way to do this? In other words, is it possible during a call to allow the user to open a certain application? (for example, to provide information based on the person who is calling). If not, will something like this be available on iOS 4?

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