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  • Why is it so hard to find a C++ 3d game tutorial

    - by Dave
    I'm planning on learning 3d game development for the iphone using a 3d engine, but because of lack of tutorials for the iphone I was planning on using C++ game tutorials and making the necessary changes. The problem is that I've had limited success when searching for things such as 'c++ 3d fps tutorial ' I dont really get anything useful. Are there any 3d c++ tutorials you can recommend?

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  • launching iphone app in itunes store help

    - by Adusum
    Hi, I developed an iPhone app using UITablesView and database in the background. I want to know furthur step for it like after completing the app development how to proceed furthur for launching it in itunes store. Can anyone help me in detail about it. Thanks,

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  • Rapid taps on an OpenGL ES app introducing input delay

    - by Tim R.
    I am starting out writing a 2D game in OpenGL ES, and I have encountered an odd problem: if I rapidly tap the touchscreen, the input starts lagging behind the display. The more times I tap, the more delay it causes between the input and any indication of that input onscreen. It only happens if I intentionally tap very rapidly, but not from tapping and dragging with any number of fingers. What could be causing this? Excessive details follow: Both accelerometer input and taps are delayed by just tapping. The only events I am responding to are touchesBegan (below) in my EAGLView and accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration in my Game object. There doesn't seem to be any upper limit to the amount of delay: I've gotten up to 12 seconds of delay by tapping rapidly with five fingers. I have not seen any drops in framerate (it stays constantly at 60 fps) in the OpenGL ES tool in Instruments or by taking 1/the time between updates. Possibly relevant code: - (void) drawView:(id) sender { [game update:allTouches]; [renderer render:game]; } -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { allTouches = [event allTouches]; } allTouches is a pointer that gets passed to my Game every update, which passes it to each GameObject in their update methods.

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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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  • Check if iOS app is live in app store

    - by MSK
    Is it possible somehow to code like below in iOS app ? if(app is live in app store) { //Do something } else { //Do other thing } I wanted to avoid cases where our QE/Dev team is using app for testing. Is there a way I can detect how app code is signed (Developer/Adhoc/Distribution) to check ? Even if it is possible, it will not eliminate cases when Apple is using our app for testing as part of review. We recorded many downloads of our content by Apple before our app goes live in App store.

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  • iPhone Application: force landscape mode, strange behaviour...?

    - by David Lawson
    This is a method I use to switch display views, based on a string passed (for example you could pass MainMenuViewController to switch views to a new instance of that class): - (void)displayView:(NSString *)newView { NSLog(@"%@", newView); [[currentView view] removeFromSuperview]; [currentView release]; UIViewController *newView = [[NSClassFromString(newView) alloc] init]; [[newView view] setFrame:CGRectMake(0, 0, 320, 460)]; [self setCurrentView:newView]; [[self view] addSubview:[currentView view]]; } I have my application forced into landscape view (.plist and -shouldRotate), but if you look in the code: [[newView view] setFrame:CGRectMake(0, 0, 320, 460)]; I have to set the frame of the newView to a portrait frame for the view to be displayed correctly - otherwise, for example, a button on the new view can only be pressed in certain parts of the screen (rectangle up the top), unresponsive anywhere else. Even though in all my NIB files they are set to landscape.

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  • iPhone UI: No edit button for UITableView, bad idea?

    - by Nic Hubbard
    I have a UITableViewController which lets the user drill down into different records. On the second level/view, the user can add and edit new records. But, I am not sure what to do, since the back button is on the top left, and I need to put the "Add" button on the top right, so there is no room (keeping to HIG) for the edit button, which would normally go where the back button is. (I am using a tab bar, so can't put it at the bottom.) Do you think that it is logical, to expect users to know to swipe to delete a record? Or, do I need to have an edit button? If I DO need an edit button, where should I put it if I am following HIG?

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  • Is iOS6 simulator buggy when deleting applications?

    - by davsan
    Frequently, when I try to delete an app on the iOS 6 simulator that comes with Xcode 4.5, the simulator freezes. What I do is just long press on the app. Delete dialog doesn't come up and the icons keep on wiggling. Quitting and re-opening the simulator does not help to delete the app. I've tried to delete the app's folder from /Library/Application Support/iPhone Simulator/5.1/Applications folder. Sometimes this helps but sometimes even this doesn't delete the icon from the simulator. This behavior is independent of the iOS version or the device model. It's the same whichever model/iOS I choose. The only thing that helps is using the Reset Contents and Settings option of the simulator. Do you experience the same frustration? If so, have you figured out a workaround besides resetting the simulator completely?

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  • NSArray vs. SQLite for Complex Queries on iPhone

    - by GingerBreadMane
    Developing for iPhone, I have a collection of points that I need to make complex queries on. For example: "How many points have a y-coordinate of 10" and "Return all points with an X-coordinate between 3 and 5 and a y-coordinate of 7". Currently, I am just cycling through each element of an NSArray and checking to see if each element matches my query. It's a pain to write the queries though. SQLite would be much nicer. I'm not sure which would be more efficient though since a SQLite database resides on disk and not in memory (to my understanding). Would SQLite be as efficient or more efficient here? Or is there a better way to do it other than these methods that I haven't thought of? I would need to perform the multiple queries with multiple sets of points thousands of times, so the best performance is important.

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  • Problem with sqlite query when using the wrapper

    - by user285096
    - (IBAction)EnterButtonPressed:(id)sender { Sqlite *sqlite = [[Sqlite alloc] init]; NSArray *paths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *writableDBPath = [documentsDirectory stringByAppendingPathComponent:@"test.sqlite"]; if (![sqlite open:writableDBPath]) return; NSArray *query = [sqlite executeQuery:@"SELECT AccessCode FROM UserAccess"]; NSLog(@"%@",query); I am getting the output as : { ( AccessCode=abcd; ) } Where as in I want it as : abcd I am using the wrapper from : http://th30z.netsons.org/2008/11/objective-c-sqlite-wrapper/ Please help .

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  • Audio/Voice Visualization

    - by Neurofluxation
    Hey you Objective-C bods. Does anyone know how I would go about changing (transforming) an image based on the input from the Microphone on the iPhone? i.e. When a user speaks into the Mic, the image will pulse or skew. Thanking you!!

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  • How to find why NSMutableData is invalid

    - by 4thSpace
    I access a RESTFUL url and get back results. The results are in JSON. I turn the response into a string via: - (void)connectionDidFinishLoading:(NSURLConnection *)connection { NSString *json = [[NSString alloc] initWithBytes:[self.receivedData mutableBytes] length:[self.receivedData length] encoding:NSUTF8StringEncoding]; The json variable has a value of 0x0. When I mouse over it, I see <Invalid CFStringRef. How can I debug this to tell why it is invalid? I render the JSON given back through the browser in A JSON parser. That checks out fine. Results are given back by entering an ID in the URL. Other IDs return results without issue. The result set is fairly large.

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  • iphone sqlite app startup issues

    - by Futur
    Hi All, I have 4 database catalogues in my app, i will be switching the four catalogues. When i start the app, i read the NSUserDefaults and try to load the default catalogue in the memory, but in the first time this doesnt happen. Instead i get null values returned first time just because the DB connection is not successful for some unknown reason, the debugger is unable to go there too. But the app starts up the next time, the values are fetched successfully. Please help

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  • how to show video or movie file into UIImagePickerController?

    - by rakesh-bhatt99
    I am using UIImagePickerController that gives user to be able select an existing photo or use the camera to take an image at that time. And i can show that image in my application with UIImageView. Now i want to use this ability for movies also. But i couldn't find any way to show the selected movie as an image in my app, just like the Photos app. as you know you can see photos and movies in the same list.

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  • Weirdest occurrence ever, UIButton @selector detecting right button, doing wrong 'else_if'?

    - by Scott
    So I dynamically create 3 UIButtons (for now), with this loop: NSMutableArray *sites = [[NSMutableArray alloc] init]; NSString *one = @"Constution Center"; NSString *two = @"Franklin Court"; NSString *three = @"Presidents House"; [sites addObject: one]; [one release]; [sites addObject: two]; [two release]; [sites addObject: three]; [three release]; NSString *element; int j = 0; for (element in sites) { UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom]; //setframe (where on screen) //separation is 15px past the width (45-30) button.frame = CGRectMake(a, b + (j*45), c, d); [button setTitle:element forState:UIControlStateNormal]; button.backgroundColor = [SiteOneController myColor1]; [button addTarget:self action:@selector(showCCView:) forControlEvents:UIControlEventTouchUpInside]; [button setTag:j]; [self.view addSubview: button]; j++; } The @Selector method is here: - (void) showCCView:(id) sender { UIButton *button = (UIButton *)sender; int whichButton = button.tag; NSString* myNewString = [NSString stringWithFormat:@"%d", whichButton]; self.view = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]]; self.view.backgroundColor = [UIColor whiteColor]; UINavigationBar *cc = [SiteOneController myNavBar1:@"Constitution Center Content"]; UINavigationBar *fc = [SiteOneController myNavBar1:@"Franklin Court Content"]; UINavigationBar *ph = [SiteOneController myNavBar1:@"Presidents House Content"]; if (whichButton = 0) { NSLog(myNewString); [self.view addSubview:cc]; } else if (whichButton = 1) { NSLog(myNewString); [self.view addSubview:fc]; } else if (whichButton = 2) { NSLog(myNewString); [self.view addSubview:ph]; } } Now, it is printing the correct button tag to NSLog, as shown in the method, however EVERY SINGLE BUTTON is displaying a navigation bar with "Franklin Court" as the title, EVERY SINGLE ONE, even though when I click button 0, it says "Button 0 clicked" in the console, but still performs the else if (whichButton = 1) code. Am I missing something here?

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  • build and analyze not working in my project

    - by mihirpmehta
    In my iPhone Project when i select build and analyze (shift + mac + A ) it will give me all potential memory leak in my project... but in my current project it is not working... when i intentionally put a memory leak and select build and analyze... it doesn't give me any potential memory leak as analyzer result please help...

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  • How to use a method with more than one parameters to create custom buttons

    - by iphonix
    I am repeating my codes few times to create custom buttons, I am trying to create a method and create all my required buttons just by called that method and using two parameters, btnTitle and btnAction. My Codes for the method -(void) addnewButton:(NSString *) btnTitle withAction:UIAction btnAction; { // Add a custom edit navigation button editButton = [[[UIBarButtonItem alloc] initWithTitle:NSLocalizedString((btnTitle), @"") style:UIBarButtonItemStyleBordered target:self action:@selector(btnAction)] autorelease]; self.navigationItem.rightBarButtonItem = editButton; } Now how shall I call this method to create a button?

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  • Custom ArrayList serialization

    - by rayman
    Hi, i was trying to serialize an ArrayList which contacins custom objects. I`am serializing it in a servlet(server side), and deserialize at the client side. (using ObjectOutputStream,ObjectInputStream) it worked fine, when I work with ArrayList< String but when i tried it with ArrayList< MyObject i couldnt get any results in the client side, this is the exception: java.lang.ClassNotFoundException: web.MyObject *ofcourse that i have done this: MyObject implements Serializable ... MyObject contains only String fields in it. what have I done worng? Thanks, ray.

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  • Iphone: controlling text with delay problem with UIWebView

    - by James B.
    Hi, I've opted to use UIWebView so I can control the layout of text I've got contained in a local html document in my bundle. I want the text to display within a UIWebView I've got contained within my view. So the text isn't the whole view, just part of it. Everything runs fine, but when the web page loads I get a blank screen for a second before the text appears. This looks really bad. can anyone give me an example of how to stop this happening? I'm assuming I have to somehow hide the web view until it has fully loaded? Could someone one tell me how to do this? At the moment I'm calling my code through the viewDidLoad like this: [myUIWebView loadRequest: [NSURLRequest requestWithURL:[NSURL fileURLWithPath:[[NSBundle mainBundle]pathForResource:@"localwebpage" ofType:@"html"] isDirectory:NO]]]; Any help is much appreciated. I've read round a few forums and not seen a good answer to this question, and it seems like it recurs a lot as an issue for beginners like myself. Thanks for taking the time to read this post! UPDATED info Thanks for your response. The suggestions below solves the problem but creates a new one for me as now when my view loads it is totally hidden until I click on my toggle switch. to understand this it's maybe most helpful if I post all my code. Before this though let me explain the setup of my view. I've got a standard view within which I've also got two web views, one on top of the other. each web view contains different text with different styling. the user flicks between views using a toggle switch, which hides/reveals the web views. I'm using the web views because I want to control the style/layout of the text. Below is my full .m code, I can't figure out where it's going wrong. My web views are called oxford & harvard I'm sure its something to do with how/when I'm hiding/revealing views. I've played around with this but can't seem to get it right. Maybe my approach is wrong. A bit of advice ironing this out would be really appreciated: @implementation ReferenceViewController @synthesize oxford; @synthesize harvard; // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { [super viewDidLoad]; [oxford loadRequest: [NSURLRequest requestWithURL:[NSURL fileURLWithPath:[[NSBundle mainBundle]pathForResource:@"Oxford" ofType:@"html"] isDirectory:NO]]]; [harvard loadRequest: [NSURLRequest requestWithURL:[NSURL fileURLWithPath:[[NSBundle mainBundle]pathForResource:@"Harvard" ofType:@"html"] isDirectory:NO]]]; [oxford setHidden:YES]; [harvard setHidden:YES]; } - (void)webViewDidFinishLoad:(UIWebView *)webView { if([webView hidden]) { [oxford setHidden:NO]; [harvard setHidden:NO]; } } //Toggle controls for toggle switch in UIView to swap between webviews - (IBAction)toggleControls:(id)sender { if ([sender selectedSegmentIndex] == kSwitchesSegmentIndex) { oxford.hidden = NO; harvard.hidden = YES; } else { oxford.hidden = YES; harvard.hidden = NO; } } - (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Release any cached data, images, etc that aren't in use. } - (void)viewDidUnload { [super viewDidUnload]; // Release any retained subviews of the main view. // e.g. self.myOutlet = nil; } - (void)dealloc { [super dealloc]; [oxford release]; [harvard release]; } @end

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  • Android - Debugging on device

    - by teepusink
    Hi, How do I install the app that I'm making on an actual device? I'm on Mac Snow Leopard with a Nexus One phone and I've followed the steps here http://developer.android.com/intl/zh-TW/guide/developing/device.html So I added: 1. android:debuggable="true" 2. Turn on "USB Debugging" on your device. However, when I go to the terminal and do "adb devices" only the emulator shows up there. I'm supposed to see my device name too right? What am I missing? Thanks, Tee

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