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  • iphone memory leaks and malloc?

    - by Brodie4598
    Okay so im finally to the point where I am testing my iPad App on an actual iPad... One thing that my app does is display a large (2mb) image in a scroll view. This is causing the iPad to get memory warnings. I run the app in the instruments to check for the leak. When I load the image, a leak is detected and i see the following in the allocations: ALl Allocations: 83.9 MB Malloc 48.55 MB: 48.55 MB Malloc 34.63 MB: 34.63 MB What im trying to understand is how to plug the leak obviously, but also why a 2MB image is causing a malloc of 20x that size I am very new to programming in obj-c so im sure this is an obvious thing, but I just cant figure it out. Here is the code:

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  • Resize view on iPhone when rotating

    - by BCBomb47
    I have an application with many views. I want only a couple of the views to be able to rotate to landscape when the device is rotated. I found out that I couldn't use (BOOL)shouldAutorotateToInterfaceOrientation because that would rotate every view in my app. I found a solution to this problem here on Stack Overflow but now I have another issue to deal with. The view rotates when I turn the device but it still shows the view as if it were still in portrait mode (straight up and down). The top and bottom of the view is cut off. Is there a way to have the view rotate and also adjust its size to fit the new orientation? I also found this but wasn't able to get it to work. Here's my code for that view: @implementation businessBank @synthesize webView, activityIndicator; - (void)viewDidLoad { [super viewDidLoad]; NSString *urlAddress = @"website_url"; NSURL *url = [NSURL URLWithString:urlAddress]; NSURLRequest *requestObj = [NSURLRequest requestWithURL:url]; [webView loadRequest:requestObj]; [[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(didRotate:) name:UIDeviceOrientationDidChangeNotification object:nil]; } - (void)didRotate:(NSNotification *)notification { UIDeviceOrientation orientation = [[notification object] orientation]; if (orientation == UIDeviceOrientationLandscapeLeft) { [self.view setTransform:CGAffineTransformMakeRotation(M_PI / 2.0)]; } else if (orientation == UIDeviceOrientationLandscapeRight) { [self.view setTransform:CGAffineTransformMakeRotation(M_PI / -2.0)]; } else if (orientation == UIDeviceOrientationPortraitUpsideDown) { [self.view setTransform:CGAffine TransformMakeRotation(M_PI)]; } else if (orientation == UIDeviceOrientationPortrait) { [self.view setTransform:CGAffineTransformMakeRotation(0.0)]; } }

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  • iphone not displaying array variables correctly

    - by Rob
    I was reading a tutorial on how to do a UIPicker and found this code: - (IBAction)buttonPressed { NSInteger row = [userPicker selectedRowInComponent:0]; NSString *selected = [userPickerData objectAtIndex:row]; NSString *title = [[NSString alloc] initWithFormat:@"You selected %a", selected]; UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title message:@"Thank you for Choosing." delegate:nil cancelButtonTitle:@"You're Welcome" otherButtonTitles:nil]; [alert show]; [alert release]; [title release]; } - (void)viewDidLoad { // [super viewDidLoad]; NSArray *array = [[NSArray alloc] initWithObjects:@"New", @"Frank", @"Bob", @"Thor", nil]; self.userPickerData = array; [array release]; } The UIPicker displays correctly and the variables in the picker also display correctly. When the button is pressed then the alert message does come up but it says, "You selected.." and then it's a bunch of gibberish. Why aren't the array variables being passed correctly?

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  • Using UIImageView for a flipbook anim on iphone

    - by Joey
    I'm using UIImageView to run a flipbook anim like this: mIntroAnimFrame = [[UIImageView alloc] initWithFrame:CGRectMake( 0, 0, 480, 320); mIntroAnimFrame.image = [UIImage imageNamed:@"frame0000.tif"]; Basically, when determine it is time, I flip the image by just calling: mIntroAnimFrame.image = [UIImage imageNamed:@"frame0000.tif"]; again with the right frame. Should I be doing this differently? Are repeated calls to set the image this way possibly bogging down main memory, or does each call essentially free the previous UIImage because nothing else references it? I suspect the latter is true. Also, is there an easy way to preload the images? The anim seems to slow down at times. Should I simply load all the images into a dummy UIImage array so they are preloaded, then refer to it when I want to show it with mIntroAnimFrame.image = mPreloadedArray[i]; ?

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  • mySql table returning JSON that needs formatting for a iPhone UITableview

    - by Michael Robinson
    I have a php query the returns the following JSON format from a table. [{"memberid":"18", "useridFK":"30", "loginName":"Johnson", "name":"Frank", "age":"23", "place":"School", }, It needs the following format: [{"memberid":"18" { "useridFK":"30", "loginName":"Johnson", "name":"Frank", "age":"23", "place":"School",} }, I can figure out where/how to convert this, Where would I create the formatting following: (1) In the php return? (2) the JSON instructions for deserialization? or (3) Some kinb of Obj-C coding instruction? My end use is a simple Drill Down table using the NSObject, so when I select "memberid" row, I'll get the child/detail list on the next UITableview. My Data.plist will look like the following: Root: Dictionary V Rows: Array V Item 0: Dictionary Title: String 18 V Children Array V Item 0 Dictionary Title String 30 etc. Thanks in advance, this site rocks.

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  • Shark tool on iphone crashes

    - by Joey
    Hi, I am trying to use Shark to profile my app. However, it crashes after I hit "stop" and it analyzes and then goes to "load session". Only once when I decided not to select my app but chose to target "everything" did it actually display some trace. However, I could not reproduce this case. Does anyone have any idea what might be going wrong? Could it be something to do with the wrong version of Shark or my SDK or some other detail? I have the latest SDK and am running 3.1.3 on the phone. The various documentation I've found on google or via Apple's docs don't seem to be terribly helpful, so if anyone has found some that's useful, I'd love to see it. Thanks.

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  • parse XML file that contains unicode characters in iphone

    - by Jim
    Hi, I am trying to parse one XML file that contains some unicode characters.I tried to parse the file using NSXMLParser but i am unable to parse XML.Parser stops when it encounters any unicode characters. Is there any other good solution to parse XML file with unicode letters? Please suggest. Thanks, Jim.

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  • Tell The Program What To Do When No Save Data Is Found NSUserDefaults, iPhone

    - by Stumf
    Hello all, I have saved data which was saved using NSUserDefaults. I was under the impression that if there was nothing saved to the key already (first time app is run) it would default to 0. This however doesn't seem to be the case. Here is what I have: To save: - (void)viewWillDisappear:(BOOL)animated { [[NSUserDefaults standardUserDefaults] setInteger:setbatteryHealthCalculated forKey:@"healthValue"]; [[NSUserDefaults standardUserDefaults] synchronize]; } To load: - (void) viewWillAppear:(BOOL)animated { NSInteger setbatteryHealthCalculated = [[NSUserDefaults standardUserDefaults] integerForKey:@"healthValue"]; } To check for save value: - (IBAction)check{ NSInteger setbatteryHealthCalculated = [[NSUserDefaults standardUserDefaults] integerForKey:@"healthValue"]; if (setbatteryHealthCalculated = 0) { [self performSelector:@selector(displayAlert) withObject:nil]; }

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  • UIPickerView issues - iphone

    - by Rob J
    I have the following: - (NSInteger) numberOfComponentsInPickerView:(UIPickerView *)pickerView { return 2; } - (NSInteger) pickerView:(UIPickerView *) pickerView numberOfRowsInComponent:(NSInteger) component { return [genderPickerData count]; return [agePickerData count]; } When I do this, the UIPicker is split into 2 components, but the PickerData is only being represented for gender on both pickers. I am trying to figure out through Apple's confusing documentation on how I reference each individual component but can't seem to figure it out.

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  • Playing wav files with AudioServices in iPhone

    - by Biranchi
    Hi All, I am trying to play two .wav files in my appllication, but i am only able to play the first wav file , the second file is not at all playing. I have added the AudioToolbox framework. In my .h file i have included the Audiotoolbox.h file and has the following declarations //Beep Sound SystemSoundID soundFileObject; SystemSoundID recycleFileObject; In my .m file i am registering both the wav files as following CFURLRef soundFileURLRef = CFBundleCopyResourceURL (CFBundleGetMainBundle (),CFSTR ("Beep"),CFSTR ("wav"),NULL ); AudioServicesCreateSystemSoundID (soundFileURLRef,&soundFileObject ); CFURLRef soundFileURLRef2 = CFBundleCopyResourceURL (CFBundleGetMainBundle (),CFSTR ("Recycle"),CFSTR ("wav"),NULL ); AudioServicesCreateSystemSoundID (soundFileURLRef2,&recycleFileObject ); And i have written two methods for playing each file individually. -(void)playBeepSound { NSLog(@"Beep sound called : %d", soundFileObject); AudioServicesPlaySystemSound (soundFileObject); } -(void)playRecycleSound { NSLog(@"Recycle sound called : %d", recycleFileObject); AudioServicesPlaySystemSound (recycleFileObject); } But i am only able to play the Beep sound , but not the second sound wav file. What is the error ??? Thanks

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  • Password authentication in sqlite3 for iphone

    - by user271753
    Hey Guys .. I am new to programming in Objective C . I checked many tutorials on reading data in sqlite3 , but almost all of them have show the data in UITableView . I have a page where the user types in the password, the password lets say 1234 is saved in the database ( I have created a table already ) . I have got the database into the project folder . I just want a statement like if(databasepassword == correct from the uitextfield ) { show next page } else { password is incorrect.text } I will figure out on how to show the next page and display the password is incorrect.text I just want a method to cross check with the password saved in the database . How can I do that ? Regards

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  • How to efficiently show many Images? (iPhone programming)

    - by Thomas
    In my application I needed something like a particle system so I did the following: While the application initializes I load a UIImage laserImage = [UIImage imageNamed:@"laser.png"]; UIImage *laserImage is declared in the Interface of my Controller. Now every time I need a new particle this code makes one: // add new Laserimage UIImageView *newLaser = [[UIImageView alloc] initWithImage:laserImage]; [newLaser setTag:[model.lasers count]-9]; [newLaser setBounds:CGRectMake(0, 0, 17, 1)]; [newLaser setOpaque:YES]; [self.view addSubview:newLaser]; [newLaser release]; Please notice that the images are only 17px * 1px small and model.lasers is a internal array to do all the calculating seperated from graphical output. So in my main drawing loop I set all the UIImageView's positions to the calculated positions in my model.lasers array: for (int i = 0; i < [model.lasers count]; i++) { [[self.view viewWithTag:i+10] setCenter:[[model.lasers objectAtIndex:i] pos]]; } I incremented the tags by 10 because the default is 0 and I don't want to move all the views with the default tag. So the animation looks fine with about 10 - 20 images but really gets slow when working with about 60 images. So my question is: Is there any way to optimize this without starting over in OpenGl ES? Thank you very much and sorry for my english! Greetings from Germany, Thomas

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  • Google Translate API for iPhone - UTF8 problem in Chinese Translation

    - by Sky Chen
    I've tested a workable translation API url by: http://translate.google.com/translate_a/t?client=t&text=%E5%BB%A3%E5%A0%B4&langpair=zh|zh-CN And it returns the correct result as the following which is in JSON format: {"sentences":[{"trans":"??","orig":"??","translit":"Guangchang"}],"src":"zh-CN"} However, when I try to use this function in XCode, I experienced this problem ... Here is my code: NSData *data; NSString *urlPath = [NSString stringWithFormat:@"/translate_a/t?client=t&text=%@&langpair=zh|zh-CN",qText]; NSURL *url = [[NSURL alloc] initWithScheme:@"http" host:@"translate.google.com" path:urlPath]; NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease]; [request setURL:url]; [request setHTTPMethod:@"GET"]; NSURLResponse *response; NSError *error; data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error]; NSString *result = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]; //Problem's here. It returns nil. NSLog(result); Initially I guessed it's encoding problem so I tried other encoding as well (NSISOLatin1StringEncoding) , but I got wrong answer: {"sentences":[{"trans":"ã ","orig":"ã ","translit":"Tu¨¯ "}],"src":"zh-CN"} Does anyone know how to solve this problem? Thank you very much!

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  • iphone SDK buttons control views

    - by mangnv
    Hi, all I'v just started to learn SDK. I have several questions. First. I will do the project about university APP. if u clike the app, then u can c several buttons on one page, then each button( eg: event, BBS,courses, map....) has specific function...each one connect to anohter view. Are they buttons on the main page? Second, how to deal with one view has several buttons, one button connect to other view? Third, how to deal with controller classes? I'd like to make a app like this way. Main Page has 6 buttonss(event, community, directory...), take community for eg: community has two functions( Notices and BBS). if i clike Notices, then i can read notices, and if i clike BBS, then i could also read BBS. The thing that i do not get is..how to deal with classes. I mean main Page has one controller classes that control 6 buttons? If my question is not so clearly, then let me know....I really need help~

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  • post image and other data using mulipart form data in iphone

    - by abdulsamad
    Hi all I am sending some data and and an image to the server using multipart/form-data in objective C. kindly give me some Php code that how can i save the image on the server i am able to get the other variables on the server that i am passing with the image. kindly see my obj C code and php and tell me where i am wrong. your help will be highly appreciated. here i make the POST request. ////////////////////// NSString *stringBoundary, *contentType, *baseURLString, *urlString; NSData *imageData; NSURL *url; NSMutableURLRequest *urlRequest; NSMutableData *postBody; // Create POST request from message, imageData, username and password baseURLString = @"http://localhost:8888/Test.php"; urlString = [NSString stringWithFormat:@"%@", baseURLString]; url = [NSURL URLWithString:urlString]; urlRequest = [[[NSMutableURLRequest alloc] initWithURL:url] autorelease]; [urlRequest setHTTPMethod:@"POST"]; // Set the params NSString *path = [[NSBundle mainBundle] pathForResource:@"LibraryIcon" ofType:@"png"]; imageData = [[NSData alloc] initWithContentsOfFile:path]; // Setup POST body stringBoundary = [NSString stringWithString:@"0xKhTmLbOuNdArY"]; contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", stringBoundary]; [urlRequest addValue:contentType forHTTPHeaderField:@"Content-Type"]; // Setting up the POST request's multipart/form-data body postBody = [NSMutableData data]; [postBody appendData:[[NSString stringWithFormat:@"\r\n\r\n--%@\r\n", stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"source\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[[NSString stringWithString:@"lighttable"] dataUsingEncoding:NSUTF8StringEncoding]]; // So Light Table show up as source in Twitter post [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"title\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[[NSString stringWithString:book.title] dataUsingEncoding:NSUTF8StringEncoding]]; // title [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"isbn\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[[NSString stringWithString:book.isbn] dataUsingEncoding:NSUTF8StringEncoding]]; // isbn [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"price\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[[NSString stringWithString:txtPrice.text] dataUsingEncoding:NSUTF8StringEncoding]]; // Price [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"condition\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[[NSString stringWithString:txtCondition.text] dataUsingEncoding:NSUTF8StringEncoding]]; // Price NSString *imageFileName = [NSString stringWithFormat:@"photo.jpeg"]; [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"upload\"; filename=\"%@\"\r\n",imageFileName] dataUsingEncoding:NSUTF8StringEncoding]]; //[postBody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"upload\"\r\n\n\n"]dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:[@"Content-Type: image/jpeg\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:imageData]; [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]]; // [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n", stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]]; NSLog(@"postBody=%@", [[NSString alloc] initWithData:postBody encoding:NSASCIIStringEncoding]); [urlRequest setHTTPBody:postBody]; NSLog(@"Image data=%@",[[NSString alloc] initWithData:imageData encoding:NSASCIIStringEncoding]); // Spawn a new thread so the UI isn't blocked while we're uploading the image [NSThread detachNewThreadSelector:@selector(uploadingDataWithURLRequest:) toTarget:self withObject:urlRequest]; I the method uploadingDataWithURLRequest i post the request to the server... Here is my php Code ?php $title = $_POST['title']; $isbn = $_POST['isbn']; $price = $_POST['price']; $condition = $_POST['condition']; $image=$_FILES['image']['name']; if($image) { $filename = 'newimage.jpeg'; file_put_contents($filename, $image); echo "image is there"; } else { echo "image is nil"; } ?> I am unable to get the image on server kindly help me where i am wrong.

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  • iPhone Address Book - Actual Addresses

    - by Programasaurus
    I'm trying to retrieve all the addresses from the address book and display them in a tableview, but I am having trouble understanding the structure of the dictionary for which street addresses are returned. Does anyone know of a tutorial or relevant code snippet for extracting the street address(es) of contacts in the AddressBook?

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  • iPhone: Using a NSMutableArry in the AppDelegate as a Global Variable

    - by aahrens
    What i'm trying to accomplish is to have an NSMutableArray defined in the AppDelegate. I then have two UIViewControllers. One view is responsible for displaying the array from the AppDelegate. The other view is used to add items to the array. So the array starts out to be empty. View1 doesn't display anything because the array is empty. The User goes to View2 and adds an item to the array in AppDelegate. Then when the user goes back to View1 it now displays one item. Here is how I'm trying to accomplish this @interface CalcAppDelegate : NSObject <UIApplicationDelegate> { UIWindow *window; UITabBarController *tabBarController; NSMutableArray *globalClasses; } @property (nonatomic,retain) NSMutableArray *globalClasses; My other view In the viewDidload I set the array in my View to be the one in the AppDelegate. In an effort to retain values. allCourses = [[NSMutableArray alloc]init]; CalcAppDelegate *appDelegate = (CalcAppDelegate *)[[UIApplication sharedApplication] delegate]; allCourses = appDelegate.globalClasses; Then I would update my allCourses array by adding a new item. Then try to set the array in the AppDelegate to be equal to the modified one. CalcAppDelegate *appDel = (CalcAppDelegate *)[[UIApplication sharedApplication] delegate]; NSLog(@"Size before reset %d",[appDel.globalClasses count]); appDel.globalClasses = allCourses; NSLog(@"Size after reset %d",[appDel.globalClasses count]); What I'm seeing that's returned is 2 in the before, and 2 after. So it doesn't appear to be getting updated properly. Any suggestions?

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  • Where is the iPhone's Date & Time getting it's time zone list

    - by johnbdh
    I can get a list of time zones with [NSTimeZone knownTimeZoneNames], but that only gives the time zone IDs which include one or 2 cities in each time zone. The Date & Time settings has a great list of cities and I have seen a few other apps that have the same if not similar lookup lists. Where do these lists come from?? I do need to relate a picked city to it's time zone like Date & Time does. Thanks, John

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  • Querying current number of touches on screen without using events on iPhone

    - by nikhil
    I have an application that starts playing a sound when user touches the uiview and changing to different tones as the user slides the finger on the screen. The sound stops when the user lifts the finger. I am using the touchesBegan, Moved and Ended Events for this. My problem is touches Ended (and/or cancelled) is sometimes not fired properly and the sound keeps playing even after the finger is lifted from screen. So as a workaround I would like to implement a timer that would check for the number of touches on the screen and if it is zero it will check and stop the audioplayer if playing. I have been searching for some code that could get me the number of touches like UITouch *touches=[self getAllTouchesonScreen]; or something :)

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  • iPhone: change height of UITableViewCell coming from a NIB

    - by Stefan Klumpp
    I have a UITableView of custom UITableViewCells which looks like this: [ CELL 0 [ description ] [ dynamic content type 1 ] [ dynamic content type 2 ] [ dynamic content type 3 ] ] [ CELL 1 [ description ] [ dynamic content type 1 ] [ dynamic content type 3 ] ] [ CELL 2 [ description ] [ dynamic content type 2 ] ] [ ... and so on ... ] Since the [description] part is already pretty complex I decided to use Interface Builder to design it and at add the [dynamic content] in the cellForRowAtIndexPath programmatically with [cell addSubview:...]. My problem is now, that I set a default height for my custom UITableViewCell in Interface Builder, but when I add my [dynamic content] (which might range between 0..3) I have different cells with different heights. One thing is of course to calculate the total height and change the return value in heightForRowAtIndexPath, but how do I change the height value of my actual cell (which was loaded from a nib file with a fixed height)?

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  • Iphone internet connection (Reachability)

    - by ludo
    Hi, I saw any post about Reachability but people doesn't really give the exact answer to the problem. In my application I use the Reachability code from apple and in my appDelegate I use this: -(BOOL)checkInternet { Reachability *reachability = [Reachability reachabilityWithHostName:@"www.google.com"]; NetworkStatus internetStatus = [reachability currentReachabilityStatus]; BOOL internet; if ((internetStatus != ReachableViaWiFi) && (internetStatus != ReachableViaWWAN)) { internet = NO; }else { internet = YES; } return internet; } So the problem is even if I have an internet connection, this code telling me that I don't have one. Does anyone know what to do to make this working? Thanks,

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