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  • Problem with playing a sound when a button is clicked.

    - by iSharreth
    in my code: import "MyViewController.h" import (IBAction)playSound{ AVAudioPlayer *myExampleSound; NSString *myExamplePath = [[NSBundle mainBundle] pathForResource:@"myaudiofile" ofType:@"caf"]; myExampleSound =[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:myExamplePath] error:NULL]; myExampleSound.delegate = self; [myExampleSound play]; } But it is showing a warning that Class MyViewController does not implement AVAudioplayerDelegate. Anyone please help. I had included the AVFoundation.Framework.

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  • Why I can't update my UIImageView?

    - by Tattat
    I make my own UIImageView, like this: @interface MyImageView : UIImageView{ } And I have the initWithFrame like this: - (void)initWithFrame{ UIImage *img = [UIImage imageWithContentsOfFile: [[NSBundle mainBundle] pathForResource:@"myImage" ofType:@"png"]]; CGRect cropRect = CGRectMake(175, 0, 175, 175); CGImageRef imageRef = CGImageCreateWithImageInRect([img CGImage], cropRect); self = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 175, 175)]; self.image = [UIImage imageWithCGImage:imageRef]; [self addSubview:imageView]; CGImageRelease(imageRef); } I want to change the image when the user touchesBegin, so I have something like this: - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { UIImage *img = [UIImage imageWithContentsOfFile: [[NSBundle mainBundle] pathForResource:@"myImage2" ofType:@"png"]]; CGRect cropRect = CGRectMake(0, 0, 175, 175); CGImageRef imageRef = CGImageCreateWithImageInRect([img CGImage], cropRect); self = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 175, 175)]; [self setImage:[UIImage imageWithCGImage:imageRef]]; CGImageRelease(imageRef); } I find that I can't change the image. So, I add a line [self addSubview:imageView]; in the touchesBegan method, that's work. But I have no idea on why I can't change the image from the touchesBegan, thz.

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  • Loading animation Memory leak

    - by Ayaz Alavi
    Hi, I have written network class that is managing all network calls for my application. There are two methods showLoadingAnimationView and hideLoadingAnimationView that will show UIActivityIndicatorView in a view over my current viewcontroller with fade background. I am getting memory leaks somewhere on these two methods. Here is the code -(void)showLoadingAnimationView { textmeAppDelegate *textme = (textmeAppDelegate *)[[UIApplication sharedApplication] delegate]; [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES]; if(wrapperLoading != nil) { [wrapperLoading release]; } wrapperLoading = [[UIView alloc] initWithFrame:CGRectMake(0.0, 0.0, 320.0, 480.0)]; wrapperLoading.backgroundColor = [UIColor clearColor]; wrapperLoading.alpha = 0.8; UIView *_loadingBG = [[UIView alloc] initWithFrame:CGRectMake(0.0, 0.0, 320.0, 480.0)]; _loadingBG.backgroundColor = [UIColor blackColor]; _loadingBG.alpha = 0.4; circlingWheel = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge]; CGRect wheelFrame = circlingWheel.frame; circlingWheel.frame = CGRectMake(((320.0 - wheelFrame.size.width) / 2.0), ((480.0 - wheelFrame.size.height) / 2.0), wheelFrame.size.width, wheelFrame.size.height); [wrapperLoading addSubview:_loadingBG]; [wrapperLoading addSubview:circlingWheel]; [circlingWheel startAnimating]; [textme.window addSubview:wrapperLoading]; [_loadingBG release]; [circlingWheel release]; } -(void)hideLoadingAnimationView { [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO]; wrapperLoading.alpha = 0.0; [self.wrapperLoading removeFromSuperview]; //[NSTimer scheduledTimerWithTimeInterval:0.8 target:wrapperLoading selector:@selector(removeFromSuperview) userInfo:nil repeats:NO]; } Here is how I am calling these two methods [NSThread detachNewThreadSelector:@selector(showLoadingAnimationView) toTarget:self withObject:nil]; and then somewhere later in the code i am using following function call to hide animation. [self hideLoadingAnimationView]; I am getting memory leaks when I call showLoadingAnimationView function. Anything wrong in the code or is there any better technique to show loading animation when we do network calls?

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  • how to increase the precision in Locate Me app

    - by thndrkiss
    Hi, I just installed the locate me app and started to understand the CLLocation stuff. I need to know how to increase the number of digits after the lat and long numbers displayed. Can any one help me. currently it shows 17.5968,82.8486. I need more number of digits after decimal(6 digits after decimal.

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  • Adding picture in pickerview

    - by iSharreth
    UIImageView *one = [[UIImageView alloc]initWithImage:[[UIImage alloc] initWithContentsOfFile:[[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"ball1.png"]]] ; UIImageView *two = [[UIImageView alloc]initWithImage:[[UIImage alloc] initWithContentsOfFile:[[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"ball2.png"]]] ; UIImageView *three = [[UIImageView alloc]initWithImage:[[UIImage alloc] initWithContentsOfFile:[[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"ball3.png"]]] ; arrayBalls = [[NSArray alloc]initWithObjects:one,two,three,nil]; I used the above code for displaying image in the pickerview. But the application is crashing when executing this code. Anyone please help.

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  • Core Data ANY BETWEEN predicate

    - by Mike Weller
    I'm trying to create an NSPredicate to find 'projects' that contain 'sessions' within a certain date range. I tried this at first: [NSPredicate predicateWithFormat:@"ANY sessions.date BETWEEN {$STARTDATE, $ENDDATE}"]; But I get an exception: *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'to-many key not allowed here' It seems BETWEEN does not work with ANY in this way. I'm also limited in use of () and AND clauses meaning I can't use something like: [NSPredicate predicateWithFormat:@"ANY (sessions.date > $STARTDATE && sessions.date < $ENDDATE)"]; If I try that I get a parse error. How can I do this? Thanks UPDATE: Note that this: [NSPredicate predicateWithFormat:@"ANY sessions.date > $STARTDATE && ANY sessions.date < $ENDDATE"]; Is incorrect because it returns a project where there is a session greater than the start date and another session less than the end date but no session in between.

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  • How to save video from a url to disk, also how to begin playback after some buffering?

    - by Shizam
    First question is, given a url to an mp4 video, how can I save that file to disk? The followup to that is while its saving, can I begin playback after its buffered some of the video to disk or do I have to wait for the entire file to be written and then: MPMoviePlayerController* theMovie=[[MPMoviePlayerController alloc] initWithContentURL:theURL]; using the path to the local file. Thanks, Sam

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  • How to save video from a url to disk, also how to begin playback after some buffering?

    - by Shizam
    First question is, given a url to an mp4 video, how can I save that file to disk? The followup to that is while its saving, can I begin playback after its buffered some of the video to disk or do I have to wait for the entire file to be written and then: MPMoviePlayerController* theMovie=[[MPMoviePlayerController alloc] initWithContentURL:theURL]; using the path to the local file. Thanks, Sam

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  • Ad Hoc Distribution - Does it update an existing previous installed version of an app?

    - by Kriem
    What happens when a user installs an ad hoc distribution of an existing app? And what happens if this app (or a newer one) hits the App Store officially? To sum it up: A user already has a v1.0 and receives a v2.0 ad hoc A user has the ad hoc v2.0 and the official public release of v2.0 hits the store A user has the ad hoc v2.0 and an official public release of v3.0 hits the store In other words, is the ad hoc version a stand-alone build or does it in fact update a previous version as expected from an update? And will it be updated as soon as a newer version hits the store?

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  • Calculation route length

    - by Paul Peelen
    Hi, I have a map with about 80 annotations. I would like to do 3 things. 1) From my current location, I would like to know the actual route distance to that position. Not the linear distance. 2) I want to be able to show a list of all the annotations, but for every annotation (having lon/lat) I would like to know the actual route distance from my position to that position. 3) I would like to know the closest annotation to my possition using route distance. Not linear distance. I think the answer to all these three points will be the same. But please keep in mind that I don't want to create a route, I just want to know the distance to the annotation. I hope someone can help me. Best regards, Paul Peelen

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  • Make circular joystick

    - by Jaba
    How do I make a joystick like the one in i dig it, using UIImageView's that the smaller one can be used to move around, I just really would like to know how I would get the smaller UIImageView to stay inside the larger one, I just don't know how I would do this because they are both circular. I have an Image below:

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  • AudioQueueOfflineRender returning empty data

    - by hyn
    I'm having problems using AudioQueueOfflineRender to decode AAC data. When I examine the buffer after the call, it is always filled with empty data. I made sure the input buffer is valid and packet descriptions are provided. I searched and found that a few others have had the same problem: http://lists.apple.com/archives/Coreaudio-api/2008/Jul/msg00119.html Also, the inTimestamp argument doesn't make sense to me. Why should the renderer care where in the audio the beginning of the buffer corresponds to? The function throws an error if I pass in NULL, so I pass in the timestamp anyway.

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  • XCode can't find base SDK

    - by Moshe
    XCode 3.2.3 Beta does not allow building for below 3.2. I opened a project that was made in an earlier XCode. For some reason, the base SDK is reported as missing even after changing it to 4.0. Other projects from earlier XCode do not have this issue. What can I do?

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  • Easiest way to support multiple orientations? How do I load a custom NIB when the application is in

    - by Peter Hajas
    Hi there, I have an application in which I would like to support multiple orientations. I have two .xib files that I want to use, myViewController.xib and myViewControllerLandscape.xib. myViewController.xib exists in project/Resources and myViewControllerLandscape.xib exists in the root project directory. What I want to do is use a separate NIB (myViewControllerLandscape.xib) for my rotations. I try detecting rotation in viewDidLoad like this: if((self.interfaceOrientation == UIInterfaceOrientationLandscapeLeft) || (self.interfaceOrientation == UIInterfaceOrientationLandscapeRight)) { NSLog(@"Landscape detected!"); [self initWithNibName:@"myViewControllerLandscape" bundle:nil]; } But I can see in gdb that this isn't executed when the app is started with the device in landscape. The NSLog message doesn't fire. Why is this? What have I done wrong? Also, if I explicitly put the initWithNibName function call in the viewDidLoad method, that nib is not loaded, and it continues with the myViewController.xib file. What's wrong with my call? Should I specify a bundle? Thanks!

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  • decompressing .gZ file from Document directory?

    - by senthilmuthu
    hi, i am having .gZ (zip file) in document directory.i want unZip it.but i am using libz.dylib framework .will it decompress and save all data to that file path?how can i get that extracted data?any has experienced in doing this?any help?when i use the method,but when i put break point, it returns data error(used in NSLog)--Z_DATA_ERROR-- - (id)initWithGzippedData: (NSData *)gzippedData; { [gzippedData retain]; if ([gzippedData length] == 0) return nil; unsigned full_length = [gzippedData length]; unsigned half_length = [gzippedData length] / 2; NSMutableData *decompressed = [[NSMutableData alloc] initWithLength:(full_length + half_length)]; BOOL done = NO; int status; z_stream strm; strm.next_in = (Bytef *)[gzippedData bytes]; strm.avail_in = [gzippedData length]; strm.total_out = 0; strm.zalloc = Z_NULL; strm.zfree = Z_NULL; if (inflateInit2(&strm, (15+32)) != Z_OK) { [gzippedData release]; [decompressed release]; return nil; } while (!done) { // Make sure we have enough room and reset the lengths. if (strm.total_out >= [decompressed length]) [decompressed increaseLengthBy: half_length]; strm.next_out = [decompressed mutableBytes] + strm.total_out; strm.avail_out = [decompressed length] - strm.total_out; // Inflate another chunk. status = inflate (&strm, Z_SYNC_FLUSH); if(status == Z_DATA_ERROR) { NSLog(@"data error"); } if (status == Z_STREAM_END) done = YES; else if (status != Z_OK) break; } if (inflateEnd (&strm) != Z_OK) { [decompressed release]; return nil; } // Set real length. [decompressed setLength: strm.total_out]; id newObject = [self initWithBytes:[decompressed bytes] length:[decompressed length]]; [decompressed release]; [gzippedData release]; return newObject; }

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  • Touch event in CPLayerHostingView?

    - by senthilmuthu
    Hi, i am using Core-plot . but when i declare the normal UIView as CPLayerHostingView,how can i handle drawRect of that view , i cant give another custom UIview name and write code in drawRect of that view?please any help to handle drawRect of CPLayerHostingView?

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  • UITableViewCell indentation not in edit mode.

    - by Eric P.
    When you enter editing mode on a grouped-style UITableView, the cells indent to show the editing control (if you aren't sure what I mean, see this picture (editing mode) http://i.imgur.com/GJXvL.png and this (non-editing mode) http://i.imgur.com/ahKYS.png). I am trying to manually indent a cell when the tableView is not in editing mode. I tried the indentationLevel property, but that just moves the text further to the right inside the cell and doesn't actually change the cell. Any ideas?

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  • NSPredicate acting strange in NSFetchedResultsController

    - by Scott Langendyk
    I feel as if this should be very simple, but it's behaving strangely. I have 3 entities, with a relationship as such Entity A <-- Entity B <<-- Entity C I have an NSFetchedResults controller and I'm trying to filter the results of Entity A using the following predicate. [NSPredicate predicateWithFormat:@"NONE entityB.entityC == %@", self.entityC]; When I try and run the app, the output shows no results. I can alter the predicate slightly to: [NSPredicate predicateWithFormat:@"ANY entityB.entityC == %@", self.entityC]; And it shows me only the results that I want it to filter out. Why is this happening?

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  • cannot dismiss the email composer view in iphone?

    - by Warrior
    I am new to iphone development.I have created a tabbar based application . In the first i want the email composer to be displayed. I am able to display it but the cancel and send button are not working,I don't know where do i go wrong .Please help me out. Here is my code. - (void)viewDidLoad { [super viewDidLoad]; [self displayComposerSheet]; } -(void)displayComposerSheet { picker = [[MFMailComposeViewController alloc] init]; [[picker navigationBar] setTintColor:[UIColor blackColor]]; picker.mailComposeDelegate = self; if ([MFMailComposeViewController canSendMail]) { [picker setToRecipients:[NSArray arrayWithObjects:@"[email protected]",nil]]; [picker setSubject:@"Sample"]; } [self.view addSubview:picker.view]; [self presentModalViewController:picker animated:YES]; } - (void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error { switch (result) { case MFMailComposeResultCancelled: alert = [[UIAlertView alloc] initWithTitle:@"Message Cancelled!" message:@"Your email has cancelled to send" delegate:self cancelButtonTitle:@"Dismiss" otherButtonTitles:nil]; [alert release]; break; case MFMailComposeResultSaved: alert = [[UIAlertView alloc] initWithTitle:@"Message Saved!" message:@"Your email has saved to send" delegate:self cancelButtonTitle:@"Dismiss" otherButtonTitles:nil]; [alert release]; break; case MFMailComposeResultSent: alert = [[UIAlertView alloc] initWithTitle:@"Message Sent!" message:@"Your email has to sent" delegate:self cancelButtonTitle:@"Dismiss" otherButtonTitles:nil]; [alert release];; break; case MFMailComposeResultFailed: alert = [[UIAlertView alloc] initWithTitle:@"Message Failed!" message:@"Your email has cancelled to send" delegate:self cancelButtonTitle:@"Dismiss" otherButtonTitles:nil]; [alert show]; [alert release]; break; default: alert = [[UIAlertView alloc] initWithTitle:@"Message Failed!" message:@"Your email has not to send" delegate:self cancelButtonTitle:@"Dismiss" otherButtonTitles:nil]; [alert release]; break; } [self dismissModalViewControllerAnimated:YES]; }

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  • Capture Backspace , is this a OK solution?

    - by f0rz
    Hello, I having a hard time to capture the backspace button in a UITextView. I am trying to capture it in the method - (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text I thought it was ok to do like this. if([text isEqualToString:@"\b") { // code ... } But for some reason, when backspace is pressed 'text' is empty. I know I can compare lenght of the UITextView but it isnt what I want to achieve. So I found a solution to this. If I look at '[text lenght]' every key on the defaultkeyboard returns 0 . Every key excepts the backspace wich is 0. In that way i know when backspace is pressed. I do this check. if([text lenght] == 0) { // BACKSPACE PRESSED   } What is your opinion about this? -or can I do it in a better way? Regards. - Martin

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