iphone

iPhone Human Interface Guidelines question

iPhone Human Interface Guidelines -- Do they apply for OpenGL games? GL games typically have custom buttons, custom lists, etc. Take the Quake player list for example, if ported, it wouldnt be a typical UI list object. Does this mean the reviewer in question would reject anything that wasn't using standard UI? Or, is there an excepti...

NSString copy not copying?

NSString *myString = @"sample string"; NSString *newString = [myString copy]; If I set a breakpoint after these two lines, the pointer for myString is the same as the pointer for newString. WTF? Isn't NSString copy supposed to return a pointer to a new object? Or am I missing something fundamental about how copy is supposed to w...

Attempted to render a circle in opengl es 1.1, renders as oval

Hi all, I attempted to render a circle in opengl es 1.1 as a test before building a larger program, but it renders as an oval. Here is the code I use to generate and render my vertices: static const int numVerts = 40; static GLfloat myFirstCircle[82]; myFirstCircle[0] = 0.0f; myFirstCircle[1] = 0.0f; for (int i = 2; i < (numVerts+1...

Loading Huge Image

Hi, I Want to load Image size 2550X3300 (i.e 1.7 Mb size), i have loaded the image into UIImageView and application gets crash due to low memory, Now i have loaded into uiWebview it works fine but i have to save this image into an PDF file in local resource. While iam saving UIImage in background same app gets crash due to low memory. ...

iPhone: convert string using HMAC-SHA1

hi all, i want to generate HMAC-SHA1 of NSString type variable. I see the post but this method give me error in CCHmac(kCCHmacAlgSHA256, cKey, strlen(cKey), cData, strlen(cData), cHMAC); and NSString *hash = [HMAC base64Encoding]; line. Please suggest how can I generate the HMAC-SHA1 of any string. ...

builtin iphone popups handling

Good Day! I have a question regarding iphone development. i am building an app for iphone which uses gps, i can tackle the gps from my app via alert that whether user wants to use gps or not. as you know when it will try to use gps, iphone's built in gps will ask as well whether to allow it to use or not. so here is my question that how...

How to make reusable components/classes from existing iPhone project ?

Hello all, I on the doorstep of a new learning curve . I want to make reusable components / classes from my completed iphone project and with the mention of the following questions , If anyone want to redirect me to some useful reusable components or classes it will be useful to me . And Also tell me which is the best way to make reus...

Fetching the value from textField

how to fetch value from TextField dynamically in iphone xcode ...

iPhone UITableView header won't disappear

In my app, I have a UITableView, grouped style. The table has two modes. In mode 1, it shows one section (A), and in mode 2, it shows 2 sections (A and B). I transition between the two modes via the insertSection and deleteSection methods of UITableView. In addition, I have header text for each section This works great for the most part...

iPhone SDK : Inserting data in tables generated by XCode

I created a data model (.xcdatamodel) in Xcode, which created .sqlite file. I can see that it has a created a few tables for metadata, alongwith a table called ZENTITY (my managed object is called entity). Can I insert data from the sqlite prompt instead of doing it programmatically? ...

xcode provision error

i installed and setup all the certificates, provisions , etc. and selected the did what was needed in the project edit page. i have the device in the usb and once i build i get this error. The iPhone “myname” doesn’t have the provisioning profile with which the application was signed. i have tried everything, read tutorials and what ...

problem in memory allocation for array of objects in iphone SDK?

Hi, if i do like,i know its wrong, but can anyone give alternative solution? for(int i = 0;i<=3;i++) { myclass *obj[i] = [[myclass alloc] init]; } ...

Strategy for animating a lot of "LED's" - thread?, UIView animations? NSOperation? (iPhone)

Hi I have to do some different views containing 72 LED lights. I built an LED Class so I can loop through the LED's and set them to different colors (Green, Red, Orange, Blue None etc.). The LED then loads the appropriate .png. This works fine, I loop over the LED's and set them. Now I know that at some time they will need to not just...

Problem getting IM information from an ABRecord

Hello, I'm trying to get the IM account information from existing contacts (adressbook) on iPhone. I walk through the contacts and I get the contacts which have an entry in IM but I can't read the jabber-address. abArray = (NSArray *)ABAddressBookCopyArrayOfAllPeople(ABAddressBookCreate()); for(int i=0 ; i<[abArray count];i++) { ABRe...

UITable View Issue,

hello i am having same issue, i tried your solution but it didnt help me in my case.. i am not getting exception but view is not getting changed.. my piece of code is as below printf("hi"); //Get the selected country NSString *selectedCountry = [listOfItems objectAtIndex:indexPath.row]; //Initialize the detail view controller and displ...

Do we need to release an UIImage object even not allocated memory?

Hi Guys, I added an image to button UIImage* deleteImage = [UIImage imageNamed:@"Delete.png"]; CGRect imageFrame=CGRectMake(-4,-4, 310, 55); [btn setFrame:imageFrame]; btn.backgroundColor=[UIColor clearColor]; [btn setBackgroundImage:deleteImage forState:UIControlStateNormal]; [btn setTitle:@"Delete" forState:UIControlStateNormal]; [bt...

Problem enabling OpenGL ES depth test on iPhone. What steps are necessary?

I remember running into this problem when I started using OpenGL in OS X. Eventually I solved it, but I think that was just by using glut and c++ instead of Objective-C... The lines of code I have in init for the ES1Renderer are as follows: glEnable(GL_DEPTH_TEST); glDepthFunc(GL_LEQUAL); Then in the render method, I have this: glCl...

Draw arrow on line

Hi, I have this code: CGPoint arrowMiddle = CGPointMake((arrowOne.x + arrowTo.x)/2, (arrowOne.y + arrowTo.y)/2); CGPoint arrowLeft = CGPointMake(arrowMiddle.x-40, arrowMiddle.y); CGPoint arrowRight = CGPointMake(arrowMiddle.x, arrowMiddle.y + 40); [arrowPath addLineToScreenPoint:arrowLeft]; [arrowPath addLineToScreenPoint:arrowMiddle...

what is difference between this two views ? (autorotation)

http://www.freezpic.com/pics/d63adbfb5faec3ded732dcfee5cc71ef.jpg in the image one i can enable red arrows inside the inner square ... http://www.freezpic.com/pics/736e30ef1accf1d174122f2e1b017b8d.jpg but in the second image i can't enable red arrows inside the inner square. why? ...

how to push one view to another view?

In my application there are two view.First view na dsecond view. In my second view there is one time for 60 sec.When i go first view to second view then timr is start.when i back to first view thne timer is running in background.when timer is over then one popup is generated.When i click on pop up(ok button) then i want to go in second v...