Are there any legal problems using external crypto libs in my iPhone application? I know that Apple has to comply to US cryptography export rules but do I as a developer have any responsibility? How does it work? ...
I have an audio recorder app that I want to work similarly to the video recorder on the 3GS. When you start recording a video, it makes a small beep. When you pause the recording, it has a double beep. I'm playing the beep and double-beep using AudioServicesPlaySystemSound() and that works fine in and of itself. However, if I start m...
Is it possible to extract the string content of a specific line in a UITextView? Thanks. ...
This is a simple question: Is this a correct way to get an integer part from a float division? int result = myFloat / anInteger; this is working, but I am not sure if it is the best way. thanks for any help. ...
I have made an class which conforms to the NSCoding protocol and does all the encode and decode stuff. For my app, I simply want to persist an object from that class to the device and the next time when the app launches, I want to load that object back into memory. Basically it's just an class which holds some user input information. F...
I have to show a label with font size = 14 when the view is 480x320. Supposing I would like to do this in a way that my code will be working well for all future device's screen sizes, including iPad and others following (I am sure more will come), what is the best way to do that? I could do this proportionally, I mean, if the scale in...
Can we set audio intensity of mp3 file in iphone application..... ...
So, my second question based off of this application I'm teaching myself Objective C with. I have a Data Source class, which for now looks mostly like: - (id) init { if (self = [super init]){ listNames = [[NSArray alloc] initWithObjects: @"Grocery", @"Wedding", @"History class",@"CS Class",@"Robotics",@"Nuclear Sciences", ...
I have a relatively simple question that I cannot seem to find the answer for. While doing the Google Maps Java API Tutorials, I ran into a problem. I can load an HTML file from the web, but when I try it locally, it just displays the contents of the file instead of running the script. Here's what works: NSString *url = @"http://code.g...
I'm getting an "Error from Debugger: Error launching remote program: security policy error" when I try to run my app on my ipod touch. The provisions look in order, and the app builds to my iphone 3gs just fine. The app used to build just fine to my ipod touch, so I'm flustered what could have changed and wondering if anyone has any th...
The content is about 230 lines. It does not appear in UITextView except when you click on it AND try to scroll down. Otherwise, it is a white blank view. Any ideas why? UITextView *termsOfService = [[UITextView alloc] initWithFrame:CGRectMake(20.0, 100.0, 245.0, 170.0)]; termsOfService.text = responseString; termsOfServic...
I have some custom drawing code in drawRect which also performs some calculation of sizes. When is the earliest I can be sure that this code has been loaded, e.g. if I want to modify it's containers size accordingly? ...
I'm trying to make UIScrollView auto-resize and appear correctly in Landscape mode. Portrait mode works fine. Here's my code: - (void)viewDidLoad { [super viewDidLoad]; //=== load all the custom view NSMutableArray *controllers = [[NSMutableArray alloc] init]; int page = 0; [controllers addObject:[self loadScrollView:[[Page1ViewContr...
A quick question, for a quick answer (since I'm not finding any): Is there a way to change the font of the section's title (given by titleForSection) in iPhone? Thanks a lot! ...
I tried to override the second tableHeaderView. But it seems that the height of it in the method heightForHeaderInSection seems to be 0. Can't explain it, do I have to put it in a iVar because in the viewForHeaderInSection I can set the view without any problems. - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection...
I have a grouped UITableView that has 3 sections and a number of cells in each section that each need to be a different custom cell, with different display requirements. I currently have a large if statement in cellForRowAtIndexPath, with each branch instantiating and returning the appropriate custom cell based on interrogating the inde...
Hello, guys. If I put only an image in a button and set the imageEdgeInsets more close to the top, the image stays centered and all works as expected: [button setImage:image forState:UIControlStateNormal]; [button setImageEdgeInsets:UIEdgeInsetsMake(-15.0, 0.0, 0.0, 0.0)]; If I put only a text in a button and set titleEdgeInsets more...
Does anyone know how to trim an image (uiimage or cgimage). By trim I mean programatically cropping to the non-transparent bounds of an image. So if I have the image below: 00111000 00010000 01011110 00000000 it would yield: 011100 001000 101111 ...
According to the documentation, if a UIPickerView has no selected value, the expected return from selectedRowInComponent: should be: "A zero-indexed number identifying the selected row, or -1 if no row is selected." However, if I check the value the very line after initializing one, its value is 0. Even if I then manually set it t...
I'd like to create a UIButton with an image that has no borders (a la UIButtonTypeInfoDark) but that highlights when you tap it. How can I do this? ...