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  • Animation is slow on iPhone

    - by Anthony Chan
    I'm developing an app that would display images and change them according to the user's action. I've created a subclass of UIView to contain an image, an index number and an array of image names. The code is like this: @interface CustomPic : UIView { UIImageView *pic; NSInteger index; NSMutableArray *picNames; //<-- an array of NSString } And in the implementation part, it has a method to change the image using a dissolve effect. - (void)nextPic { index++; if (index >= [picNames count]) { index = 0; } UIImageView *temp = pic; pic.image = [UIImage imageNamed:[picNames objectAtIndex:index]]; temp.alpha = 0; [UIView beginAnimations:nil context:nil]; [UIView setAnimationCurve:UIViewAnimationCurveEaseOut]; [UIView setAnimationDuration:0.25]; pic.alpha = 0; temp.alpha = 1; [UIView commitAnimations]; } In the viewController, there are several CustomPic which would change the images depends on users' choice. The images would change as expected with the fade in/out effect, but the animation performance is really bad. I've tested it on an iPhone 3G, the Instruments shows that the animation is only 2-3FPS! I tried many methods to simplify and modify the codes but with no hope. Is there something wrong in my code or in my concept? Thanks for any help. P.S. all the images are 320*480 PNGs with a max size of 15KB.

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  • UIAlertView choice causing resignFirstResponder to fail

    - by Chazbot
    Hi everyone. I'm having a similar issue to Anthony Chan's question, and after trying every suggested solution, I'm still stuck. Somehow, only after interacting with my UIAlertView, I'm unable to dismiss the keyboard in another view of my app. It's as though the Alert is breaking my UITextField's ability to resignFirstResponder. Below I instantiate my UIAlertView, which then calls its didDismissWIthButtonIndex method. Then, I call the showInfo method, which loads another UIViewController. UIAlertView *emailFailAlert = [[UIAlertView alloc] initWithTitle:@"Error" message:@"error message text." delegate:self cancelButtonTitle:@"Not now" otherButtonTitles:@"Settings", nil]; [emailFailAlert setTag:2]; [emailFailAlert show]; [emailFailAlert release]; Once the 'Settings' option is pressed, I'm calling this method: - (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex { if ([alertView tag] == 2) { if (buttonIndex == 1){ [self showInfo:nil]; } } } My showInfo method loads the other ViewController, via the code below: - (IBAction)showInfo:(id)sender { FlipsideViewController *fscontroller = [[FlipsideViewController alloc] initWithNibName:@"FlipsideView" bundle:nil]; fscontroller.delegate = self; fscontroller.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal; [self presentModalViewController:fscontroller animated:YES]; [fscontroller release]; } Upon clicking any textField in this Flipside VC, I'm unable to dismiss the keyboard as I normally can with - (BOOL)textFieldShouldReturn:(UITextField *)textField, and [textField resignFirstResponder]. I've omitted this code bc this question is getting long, but I'm happy to post if necessary. The interesting part is that if I comment out the [self showInfo:nil] call made when the button is clicked and call it by clicking a test button (outside the alertView didDismissWithButtonIndex: method), everything works fine. Any idea what's happening here? Thanks in advance!

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  • When memory is actually freeded?

    - by zhyk
    Hello all. I'm trying to understand memory management stuff in Objective-C. If I see the memory usage listed by Activity Monitor, it looks like memory is not being freed (I mean column rsize). But in "Object Allocations" everything looks fine. Here is my simple code: #import <Foundation/Foundation.h> int main (int argc, const char * argv[]) { NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; NSInteger i, k=10000; while (k>0) { NSMutableArray *array = [[NSMutableArray alloc]init]; for (i=0;i<1000*k; i++) { NSString *srtring = [[NSString alloc] initWithString:@"string...."]; [array addObject:srtring]; [srtring release]; srtring = nil; } [array release]; array = nil; k-=500; } [NSThread sleepForTimeInterval:5]; [pool release]; return 0; } As for retain and release it's cool, everything is balanced. But rsize decreases only after quitting from this little program. Is it possible to "clean" memory somehow before quitting?

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  • pushing view controller inside a tab bar from app delegate, after a notification.

    - by shani
    hi i have an app with tab bar and a navigation controller inside every tab. i have set a notification that when it lunches the user can get lunch the app by pressing the action on the alert. i want to redirect the user to one of the views inside one of the controllers. i have tried this: (void)application:(UIApplication *)app didReceiveLocalNotification:(UILocalNotification *)notif { NSArray *data = [notif.userInfo objectForKey:@"todoDate"]; NSInteger ind = [[data objectAtIndex:2] integerValue]; QuickViewController *detailViewController ; detailViewController = [[QuickViewController alloc] initWithNibName:@"QuickViewController" bundle:nil]; detailViewController.title = @"Edit"; detailViewController.personName = [data objectAtIndex:0]; detailViewController.DelitionDate=[data objectAtIndex:1]; detailViewController.personCategory=@"NO Category"; detailViewController.personID = ind r ; rootControler.selectedIndex = 1; [rootControler.tabBarController.selectedViewController.navigationController pushViewController:detailViewController animated:YES]; } but nothing is happening (no crashing) except of the :rootControler.selectedIndex = 1; when i tried : presentModalViewController i got the view perfectly but without the navigation controller. thanks shani

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  • iPhone SDK: Why is didSelectRowAtIndexPath not being fired?

    - by iPhone Developer
    I have a view with a table on it. When the app starts, it loads the first 5 visble cells. That works as expected. My problem is that, when I try to scroll down in the table the app crashes with this error. What I've found is that didSelectRowAtIndexPath is not being called. AFAIK, all I need to do is to subscribe to the delegate. But I must be missing something? @interface LandingRetailersViewController : TableSectionHeaderViewController<UITableViewDataSource, UITableViewDelegate, UITabBarDelegate> { Any help appreciated. 2010-06-06 12:25:42.547 iphoneos[18238:207] * -[NSCFString tableView:cellForRowAtIndexPath:]: unrecognized selector sent to instance 0x451a980 2010-06-06 12:25:42.549 iphoneos[18238:207] Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '** -[NSCFString tableView:cellForRowAtIndexPath:]: unrecognized selector sent to instance 0x451a980' Here is my code to load cells. UITableViewCell * cell = nil; NSInteger index = [indexPath indexAtPosition:1]; NSLog(@"WHAT IS INDEX %i", indexPath); RoundedGradientTableViewCell *retailerCell = (RoundedGradientTableViewCell *)[tb dequeueReusableCellWithIdentifier:@"RET"]; if(!retailerCell){ retailerCell = [[[RoundedGradientTableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:@"RET"] autorelease]; } [retailerCell setArcSize:5.0]; [retailerCell setStrokeSize:1.0]; [retailerCell setStrokeColor:[UIColor clearColor]]; [retailerCell setBackgroundFillColor:[UIColor clearColor]]; [retailerCell setBackgroundColor:[UIColor clearColor]]; Retailer *retailer = [self retailerAtIndex:index]; if(retailer){ [[retailerCell textLabel] setText:[retailer name]]; if([retailer hasImage]){ [[retailerCell contentImageView] setImage:[retailer image]]; } } else { [[retailerCell textLabel] setText:@"No title"]; } cell = retailerCell; [cell setSelectionStyle:UITableViewCellSelectionStyleNone]; NSLog(@"retailer: %@ ", [retailer name]); NSLog(@"log: %i ", index); return cell;

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  • show image in a CGContextRef

    - by Ishu
    What i am doing, i downloded a code from calender now i want to show images on its tiles(for date). What i am trying shows in code - (void)drawTextInContext:(CGContextRef)ctx { CGContextSaveGState(ctx); CGFloat width = self.bounds.size.width; CGFloat height = self.bounds.size.height; CGFloat numberFontSize = floorf(0.3f * width); CGContextSetFillColorWithColor(ctx, kDarkCharcoalColor); CGContextSetTextDrawingMode(ctx, kCGTextClip); for (NSInteger i = 0; i < [self.text length]; i++) { NSString *letter = [self.text substringWithRange:NSMakeRange(i, 1)]; CGSize letterSize = [letter sizeWithFont:[UIFont boldSystemFontOfSize:numberFontSize]]; CGContextSaveGState(ctx); // I will need to undo this clip after the letter's gradient has been drawn [letter drawAtPoint:CGPointMake(4.0f+(letterSize.width*i), 0.0f) withFont:[UIFont boldSystemFontOfSize:numberFontSize]]; if ([self.date isToday]) { CGContextSetFillColorWithColor(ctx, kWhiteColor); CGContextFillRect(ctx, self.bounds); } else { // CGContextDrawLinearGradient(ctx, TextFillGradient, CGPointMake(0,0), CGPointMake(0, height/3), kCGGradientDrawsAfterEndLocation); CGDataProviderRef dataProvider = CGDataProviderCreateWithFilename("left-arrow.png"); CGImageRef image = CGImageCreateWithPNGDataProvider(dataProvider, NULL, NO, kCGRenderingIntentDefault); //UIImage* image = [UIImage imageNamed:@"left-arrow.png"]; //CGImageRef imageRef = image.CGImage; CGContextDrawImage(ctx, CGRectMake(8.0f+(letterSize.width*i), 0.0f, 5, 5), image); //im.image=[UIImage imageNamed:@"left-arrow.png"]; } CGContextRestoreGState(ctx); // get rid of the clip for the current letter } CGContextRestoreGState(ctx); } In else condition i want to show images on the tile so for that i am converting image objects in the CGContextDrawImage. Please help me. I am not sure this would be done in same manner or in other manner please suggest your way to do this. Thanx a lot.

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  • iPhone table header lables not showing up in Release build but show up OK in Debug build

    - by Robert
    My table header shows up ok with Release build or Debug build for the iPhone simulator, but the header labels only show up with debug build on the iPhone. No header labels show up on the iPhone for release build. Any ideas? Thanks, Robert My code for the header is below - (UIView *) tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)sectionNum { @try { // create the parent view that will hold header Label UIView* customView = [[[UIView alloc] initWithFrame:CGRectMake(HEADER_RELX_OFFSET, HEADER_RELY_OFFSET, HEADER_ROW_WIDTH, HEADER_HEIGHT)] autorelease]; UILabel* headerLabel = [[UILabel alloc] initWithFrame:CGRectZero]; headerLabel.backgroundColor = [UIColor clearColor]; headerLabel.opaque = NO; headerLabel.numberOfLines = 0; headerLabel.textColor = [UIColor blackColor]; headerLabel.highlightedTextColor = [UIColor whiteColor]; headerLabel.font = [UIFont boldSystemFontOfSize:HEADER_FONT_SIZE]; headerLabel.textAlignment = UITextAlignmentCenter; headerLabel.lineBreakMode = UILineBreakModeWordWrap; headerLabel.frame = CGRectMake(HEADER_RELX_OFFSET, HEADER_RELY_OFFSET, HEADER_ROW_WIDTH, HEADER_HEIGHT); if(sectionNum == 0) headerLabel.text = @"My Label"; else headerLabel.text = @""; [customView addSubview:headerLabel]; return customView; @catch (NSException* exception) { NSLog(@"viewForHeaderInSection: %@: %@",[exception name],[exception reason]); } }

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  • Why am I getting "Message sent to deallocated instance" in Objective-C?

    - by Dave C
    I have several buttons on my app that are being created dynamically. They are all pointed at the button click event when pressed. When the button pressed method is called, the sender's tag (int value) is parsed into the controller's house ID. It works with one of the buttons — the first one created, to be specific — but the others throw the following error: -[CFNumber intValue]: message sent to deallocated instance 0xc4bb0ff0 I am not releasing these buttons anywhere in my code. I haven't set them to autorelease or anything like that. I'm just wondering why they are doing this on the click. The button click event: - (IBAction) ButtonClick: (id) sender { HouseholdViewController *controller = [[HouseholdViewController alloc] initWithNibName:@"HouseholdViewController" bundle:nil]; controller.delegate = self; controller.HouseID = [(NSInteger)[(UIButton *)sender tag] intValue]; //this line throws an error controller.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal; [self presentModalViewController:controller animated:YES]; [controller release]; } Where I am creating the buttons: UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom]; button.frame = CGRectMake(MyLongInScreenCoords, MyLatInScreenCoords, 50, 50); UIImage *buttonImageNormal = [UIImage imageNamed:@"blue_pin.png"]; UIImage *strechableButtonImageNormal = [buttonImageNormal stretchableImageWithLeftCapWidth:50 topCapHeight:50]; [button setBackgroundImage:strechableButtonImageNormal forState:UIControlStateNormal]; [self.view addSubview:button]; button.tag = [NSNumber numberWithInt:[[words objectAtIndex: i] intValue]]; ButtonPoints[CurrentHouseCount][0] = button; ButtonPoints[CurrentHouseCount][1] = [NSValue valueWithCGPoint:CGPointMake(MyActualLat, MyActualLong)]; [button addTarget:self action:@selector(ButtonClick:) forControlEvents:UIControlEventTouchUpInside]; CurrentHouseCount++;

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  • Controls in UIActionSheet are positioning wrong

    - by Dave
    I need to display a pop with a UISwitch and a Done button when user taps on a button and save the state of the switch when the done button in the pop up is tapped. So I use UIActionSheet to do this - sheet = [[UIActionSheet alloc] initWithTitle:@"Switch Setting" delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:@"Done", nil]; theSwitch = [[UISwitch alloc] init]; [sheet addSubview:theSwitch]; [sheet showInView:self.view]; - (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex { if (buttonIndex == actionSheet.firstOtherButtonIndex) { theSwitch .on? NSLog(@"Switch is on") : NSLog(@"Switch if off"); } } All this works great. I have problem with positioning. Unfortunately, I don't have a screen shot at the moment to post here. But the switch appears at the very top on the same line with the Action Sheet title and then below that is the Done button. Please someone help me how to position the switch below the Title and increase the Action Sheet size so it looks neat. I need this asap. Thanks.

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  • I dont know how or where to add the correct encoding code to this iPhone code...

    - by BC
    Ok, I understand that using strings that have special characters is an encoding issue. However I am not sure how to adjust my code to allow these characters. Below is the code that works great for text that contains no special characters, but can you show me how and where to change the code to allow for the special characters to be used. Right now those characters crash the app. enter code here - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{ if (buttonIndex == 1) { //iTunes Audio Search NSString *stringURL = [NSString stringWithFormat:@"http://phobos.apple.com/WebObjects/MZSearch.woa/wa/search?WOURLEncoding=ISO8859_1&lang=1&output=lm&term=\"%@\"",currentSong.title]; stringURL = [stringURL stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding]; NSURL *url = [NSURL URLWithString:stringURL]; [[UIApplication sharedApplication] openURL:url]; } } And this: -(IBAction)launchLyricsSearch:(id)sender{ WebViewController * webView = [[WebViewController alloc] initWithNibName:@"WebViewController" bundle:[NSBundle mainBundle]]; webView.webURL = [NSString stringWithFormat:@"http://www.google.com/m/search?hl=es&q=\"%@\"+letras",currentSong.title]; webView.webTitle = @"Letras"; [self.navigationController pushViewController:webView animated:YES]; } Please show me how and where to do this for these two bits of code.

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  • NSInvocation object not getting allocated iphone sdk

    - by neha
    Hi all, I'm doing NSString *_type_ = @"report"; NSNumber *_id_ = [NSNumber numberWithInt:report.reportId]; NSDictionary *paramObj = [NSDictionary dictionaryWithObjectsAndKeys: _id_, @"bla1", _type_, @"bla2",nil]; _operation = [[NSInvocationOperation alloc] initWithTarget:self selector:@selector(initParsersetId:) object:paramObj]; But my _operation object is nil even after processing this line. The selector here is actually a function I'm writing which is like: -(void)initParsersetId:(NSInteger)_id_ type:(NSString *)_type_ { NSString *urlStr = [NSString stringWithFormat:@"apimediadetails?id=624&type=report"]; NSString *finalURLstr = [urlStr stringByAppendingString:URL]; NSURL *url = [[NSURL alloc] initWithString:finalURLstr]; NSXMLParser *xmlParser = [[NSXMLParser alloc] initWithContentsOfURL:url]; //Initialize the delegate. DetailedViewObject *parser = [[DetailedViewObject alloc] initDetailedViewObject]; //Set delegate [xmlParser setDelegate:parser]; //Start parsing the XML file. BOOL success = [xmlParser parse]; if(success) NSLog(@"No Errors"); else NSLog(@"Error Error Error!!!"); } Can anybody please point out wheather where I'm going wrong. Thanx in advance.

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  • How can I check if a TTTabItem gets selected?

    - by schoash
    I have several TTTabGrids in my view and now I am stuck with the problem, that I can't figure out, how to detect, when a TTTabItem gets touched. If someone selects an item in one of the TTTabGrids I should upadate some labels. Can someone tell me a way how to detect, when the selection in a TTTabGrid gets changed? My code looks like this: @interface MyTTTabGrid : TTTabGrid @end @implementation MyTTTabGrid - (id)initWithFrame:(CGRect)frame columns:(NSInteger)columns{ if (self = [super initWithFrame:frame]) { self.style = TTSTYLE(tabGrid); _columnCount = columns; } return self; } @end - (void)viewDidLoad { [super viewDidLoad]; _tabBarHours = [[MyTTTabGrid alloc] initWithFrame:CGRectMake(10, _tabBarZone.bottom+10, 300, 0) columns:7]; _tabBarHours.backgroundColor = [UIColor clearColor]; NSMutableArray *tmpHours = [[NSMutableArray alloc] init]; int i=6; while (i<20) { [tmpHours addObject:[[[TTTabItem alloc] initWithTitle:[NSString stringWithFormat:@"%d", i]] autorelease]]; i++; } _tabBarHours.tabItems = tmpHours; [_tabBarHours sizeToFit]; [self.view addSubview:_tabBarHours]; [tmpHours release]; }

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  • ApplicationDelegate is not doing its own job here ! Can anyone help me??

    - by ahmet732
    (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { MaSystemGuiAppDelegate *appDelegate = (MaSystemGuiAppDelegate *)[[UIApplication sharedApplication] delegate]; appDelegate.deneme = [tableData objectAtIndex:indexPath.row] ; NSLog(@"my row", appDelegate.deneme); // THIS IS NOT PRINTING NSLog(@"my row = %@", [tableData objectAtIndex:indexPath.row]); //THIS IS PRINTING THE VALUE ON CONSOLE NSInteger row = [indexPath row]; if(self.searchDetailViewController == nil){ SearchDetailViewController *asearchDetail = [[SearchDetailViewController alloc] initWithNibName:@"SearchDetailView" bundle:nil]; self.searchDetailViewController = asearchDetail; [asearchDetail release]; } searchDetailViewController.title = [NSString stringWithFormat:@"%@", [searchArray objectAtIndex:row]]; MaSystemGuiAppDelegate *delegate = [[UIApplication sharedApplication] delegate]; [delegate.searchNavController pushViewController:searchDetailViewController animated:YES]; } "deneme" is a NMUtableArray is identified in MaSystemGuiAppDelegate.h (I identified it as a variable and put its property there) and I wrote "deneme= [[NSMutableArray alloc]init]; in applicationDidFinishLaunching method in MaSystemGuiAppDelegate.m. In the code above, [tableData objectAtIndex:indexPath.row] is retrieving the one of the value touched on tableview. When I put that value in deneme (as u noticed in the code) it is printing nothing. What am i missing? (I imported MaSystemGuiAppDelegate.h)

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  • Creating Actions from UIActionSheets help

    - by user337174
    I am using two UIAction sheets within my current project. I can get one to work perfectly fine but when i insert a second action sheet it runs the same arguements as the first. How do i define the actionsheets seperatly? -(IBAction) phoneButtonClicked:(id)sender { // open a dialog with just an OK button UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:[NSString stringWithFormat:@"Phone: %@",phone],nil]; actionSheet.actionSheetStyle = UIActionSheetStyleDefault; [actionSheet showInView:self.view]; // show from our table view (pops up in the middle of the table) [actionSheet release]; } -(IBAction) mapButtonClicked:(id)sender { // open a dialog with just an OK button UIActionSheet *mapActionSheet = [[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:[NSString stringWithFormat:@"Map"],nil]; mapActionSheet.actionSheetStyle = UIActionSheetStyleDefault; [mapActionSheet showInView:self.view]; // show from our table view (pops up in the middle of the table) [mapActionSheet release]; } -(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex { if(buttonIndex == 0){ NSString *callPhone = [NSString stringWithFormat:@"tel:%@",phone]; NSLog(@"Calling: %@", callPhone); [[UIApplication sharedApplication] openURL:[NSURL URLWithString:callPhone]]; } }

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  • Orientation issue while presenting Modal ViewController

    - by Jacky Boy
    Current scenario: Right now I am showing a UIViewController using a segue with the style Modal and presentation Sheet. This Modal gets its superview bounds change, in order to have the dimensions I want, like this: - (void)viewWillLayoutSubviews { [super viewWillLayoutSubviews]; self.view.superview.bounds = WHBoundsRect; } The only allowed orientations are UIInterfaceOrientationLandscapeLeft and UIInterfaceOrientationLandscapeRight. Since the Modal has some TextFields and the keyboard would be over the Modal itself, I am changing its center so it moves a bit to the top. The problem: What I am noticing right now, is that I am unable to work with the Y coordinate. In order for it move vertically (remember it's on landscape) I need to work with the X. The problem is that when it's UIInterfaceOrientationLandscapeLeft I need to come with a negative X. And when it's UIInterfaceOrientationLandscapeRight I need to come with a positive X. So it seems that the X/Y Coordinate System is "glued" to the top left corner while in Portrait and when an orientation occurs, it's still there: What I have done So I have something like this: UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation]; NSInteger newX = 0.0f; if (orientation == UIInterfaceOrientationLandscapeLeft) { // Logic for calculating the negative X. } else { // Logic for calculating the positive X. } It works exactly like I want, but it seems a very fragile implementation. Am I missing something? Is this the expected behaviour?

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  • iPhone table header labels not showing up in Release build but show up OK in Debug build

    - by Robert
    My table header shows up ok with Release build or Debug build for the iPhone simulator, but the header labels only show up with debug build on the iPhone. No header labels show up on the iPhone for release build. Any ideas? Thanks, Robert My code for the header is below - (UIView *) tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)sectionNum { @try { // create the parent view that will hold header Label UIView* customView = [[[UIView alloc] initWithFrame:CGRectMake(HEADER_RELX_OFFSET, HEADER_RELY_OFFSET, HEADER_ROW_WIDTH, HEADER_HEIGHT)] autorelease]; UILabel* headerLabel = [[UILabel alloc] initWithFrame:CGRectZero]; headerLabel.backgroundColor = [UIColor clearColor]; headerLabel.opaque = NO; headerLabel.numberOfLines = 0; headerLabel.textColor = [UIColor blackColor]; headerLabel.highlightedTextColor = [UIColor whiteColor]; headerLabel.font = [UIFont boldSystemFontOfSize:HEADER_FONT_SIZE]; headerLabel.textAlignment = UITextAlignmentCenter; headerLabel.lineBreakMode = UILineBreakModeWordWrap; headerLabel.frame = CGRectMake(HEADER_RELX_OFFSET, HEADER_RELY_OFFSET, HEADER_ROW_WIDTH, HEADER_HEIGHT); if(sectionNum == 0) headerLabel.text = @"My Label"; else headerLabel.text = @""; [customView addSubview:headerLabel]; return customView; @catch (NSException* exception) { NSLog(@"viewForHeaderInSection: %@: %@",[exception name],[exception reason]); } }

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  • How should I properly format this code?

    - by ct2k7
    Hi, I've a small issue here. I am using an if statement with UIAlertView and I have two situations, both result in UIAlertViews. However, in one situation, I want to dismiss just the UIAlertView, the other, I want the UIAlertView to be dismissed and view to return to root view. This code describes is: if([serverOutput isEqualToString:@"login.true"]){ [Alert dismissWithClickedButtonIndex:0 animated:YES]; [UIApplication sharedApplication].networkActivityIndicatorVisible = NO; UIAlertView *success = [[UIAlertView alloc] initWithTitle:@"Success" message:@"The transaction was a success!" delegate:self cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil]; [success show]; [success release]; } else { UIAlertView *failure = [[UIAlertView alloc] initWithTitle:@"Failure" message:@"The transaction failed. Contact sales operator!" delegate:self cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil]; [failure show]; [failure release]; } } -(void)alertView: (UIAlertView *)success clickedButtonAtIndex: (NSInteger)buttonIndex{ switch(buttonIndex) { case 0: { [self.navigationController popToRootViewControllerAnimated:YES]; } } } So, in both cases, they follow the above action, but obviously, that's not what I want. Any ideas on what I do here?

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  • sqlite3 DELETE problem "Library Routine Called Out Of Sequence"

    - by Michael Bordelon
    Here is my second stupid Noob problem. I am trying to do a simple Delete and I keep blowing up on the prepare step. I already have other Deletes, Inserts, Updates and Selects working. I am sure it is something simple. I appreciate your help. + (void)flushTodaysWorkouts { sqlite3_stmt *statement = nil; //open the database if (sqlite3_open([[BIUtility getDBPath] UTF8String], &database) != SQLITE_OK) { sqlite3_close(database); NSAssert(0, @"Failed to opendatabase"); } NSArray *woList = [self todaysScheduledWorkouts]; for (Workout *wo in woList) { NSInteger woID = wo.woInstanceID; if(statement == nil) { const char *sql = "DELETE FROM IWORKOUT WHERE WOINSTANCEID = ?"; if(sqlite3_prepare_v2(database, sql, -1, &statement, NULL) != SQLITE_OK) NSAssert1(0, @"Error while creating delete statement. '%s'", sqlite3_errmsg(database)); } //When binding parameters, index starts from 1 and not zero. sqlite3_bind_int(statement, 1, woID); if (SQLITE_DONE != sqlite3_step(statement)) NSAssert1(0, @"Error while deleting. '%s'", sqlite3_errmsg(database)); sqlite3_finalize(statement); } if(database) sqlite3_close(database); }

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  • release object of a return method object c

    - by Piero
    in run the app with the analyze build, and Xcode found me a lot of memory leak and there is one in particular that i don't know how solve here it is: - (UIView *) tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section { UIImageView *sectionImage = [[UIImageView alloc] init]; if (section == 0)sectionImage.image = [UIImage imageNamed:@"myImage.png"]; return sectionImage; } so my question is, how i can release this sectionImage? if is the return of the method? EDIT: i have another question, analyze give me another memory leak, i have this: .h @property (nonatomic, retain) NSIndexPath *directCellPath; .m @synthesize directCellPath = _directCellPath; - (id)init{ if ((self = [super initWithNibName:@"MyViewController" bundle:nil])) { self.directCellPath = [[NSIndexPath alloc] init]; } return self; } then in the code i use it and finally in the dealloc i do this: - (void)dealloc { [_directCellPath release]; [super dealloc]; } and give me a memory leak on this line: self.directCellPath = [[NSIndexPath alloc] init]; why if i have deallocated it in the dealloc?

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  • Usage of autorelease pools for fetch method

    - by Matthias
    Hi, I'm a little bit confused regarding the autorelease pools when programming for the iPhone. I've read a lot and the oppionions seem to me from "Do-NOT-use" to "No problem to use". My specific problem is, I would like to have a class which encapsulates the SQLite3 Access, so I have for example the following method: -(User*)fetchUserWithId:(NSInteger)userId Now, within this method a SQL query is done and a new user object is created with the data from the database and then returned. Within this DB Access class I don't need this object anymore, so I can do a release, but since the calling method needs it, I would do an autorelease, wouldn't I? So, is it okay to use autorelease here oder would it gain too much memory, if this method is called quite frequently? Some websites say, that the autorelease pool is released first at the end of the application, some say, at every event (e.g. user touches something). If I should not use autorelease, how can I make sure, that the object is released correctly? Can I do a release in the fetch method and hope, that the object is still there until the calling method can do a retain? Thanks for your help! Regards Matthias

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  • Custom UITableViewCell trouble with UIAccessibility elements

    - by ojreadmore
    No matter what I try, I can't keep my custom UITableViewCell from acting like it should under the default rules for UIAccessiblity. I don't want this cell to act like an accessibility container (per se), so following this guide I should be able to make all of my subviews accessible, right?! It says to make each element accessible separately and make sure the cell itself is not accessible. - (BOOL)isAccessibilityElement { return NO; } - (NSString *)accessibilityLabel { return nil; } - (NSInteger)accessibilityElementCount { return 0; } - (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier //cells use this reusage stuff { if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) { [self setIsAccessibilityElement:NO]; sub1 = [[UILabel alloc] initWithFrame:CGRectMake(0,0,1,1)]; [sub1 setAccessibilityLanguage:@"es"]; [sub1 setIsAccessibilityElement:YES]; [sub1 setAccessibilityLabel:sub1.text] sub2 = [[UILabel alloc] initWithFrame:CGRectMake(0,0,1,1)]; [sub2 setAccessibilityLanguage:@"es"]; [sub2 setIsAccessibilityElement:YES]; [sub2 setAccessibilityLabel:sub2.text] The voice over system reads the contents of the whole cell all at once, even though I'm trying to stop that behavior. I could say [sub2 setIsAccessibilityElement:NO]; but that would would make this element entirely unreadable. I want to keep it readable, but not have the whole cell be treated like a container (and assumed to be the English language). There does not appear to be a lot of information out there on this, so at the very least I'd like to document it.

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  • Iphone xcode simulator crashes when I move up and down on a table row

    - by Frames84
    I can't get my head round this. When the page loads, everything works fine - I can drill up and down, however 'stream' (in the position I have highlighted below) becomes not equal to anything when I pull up and down on the tableview. But the error is only sometimes. Normally it returns key/pairs. If know one can understand above how to you test for // (int)[$VAR count]} key/value pairs in a NSMutableDictionary object - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *FirstLevelCell = @"FirstLevelCell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:FirstLevelCell]; if(cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:FirstLevelCell] autorelease]; } NSInteger row = [indexPath row]; //NSDictionary *stream = (NSDictionary *) [dataList objectAtIndex:row]; NSString *level = self.atLevel; if([level isEqualToString:@"level2"]) { NSMutableDictionary *stream = [[NSMutableArray alloc] init]; stream = (NSMutableDictionary *) [dataList objectAtIndex:row]; // stream value is (int)[$VAR count]} key/value pairs if ([stream valueForKey:@"title"] ) { cell.textLabel.text = [stream valueForKey:@"title"]; cell.textLabel.numberOfLines = 2; cell.textLabel.font =[UIFont systemFontOfSize:10]; NSString *detailText = [stream valueForKey:@"created"]; cell.detailTextLabel.numberOfLines = 2; cell.detailTextLabel.font= [UIFont systemFontOfSize:9]; cell.detailTextLabel.text = detailText; NSString *str = @"http://www.mywebsite.co.uk/images/stories/Cimex.jpg"; NSData *imageURL = [[NSData alloc] initWithContentsOfURL:[NSURL URLWithString:str]]; UIImage *newsImage = [[UIImage alloc] initWithData:imageURL]; cell.imageView.image = newsImage; [stream release]; } } else { cell.textLabel.text = [dataList objectAtIndex:row]; } return cell; } Thanks for your time

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  • Cocoa Drag and Drop, reading back the data. [Newbie]

    - by kodai
    Ok, I have a NSOutlineView set up, and I want it to capture PDF's if a pdf is dragged into the NSOutlineView. My first question, I have the following code: [outlineView registerForDraggedTypes:[NSArray arrayWithObjects:NSStringPboardType, NSFilenamesPboardType, nil]]; In all the apple Docs and examples I've seen I've also seen something like MySupportedType being an object registered for dragging. What does this mean? Do I change the code to be: [outlineView registerForDraggedTypes:[NSArray arrayWithObjects:@"pdf", NSStringPboardType, NSFilenamesPboardType, nil]]; Currently I have it set up to recognize drag and drop, and I can even make it spit out the URL of the dragged file once the drag is accepted, however, this leads me to my second question. I want to keep a copy of those PDF's app side. I suppose, and correct me if I'm wrong, that the best way to do this is to grab the data off the clipboard, save it in some persistant store, and that's that. (as apposed to using some sort of copy command and literally copying the file to the app director.) That being said, I'm not sure how to do that. I've the code: - (BOOL)outlineView:(NSOutlineView *)ov acceptDrop:(id <NSDraggingInfo>)info item:(id)item childIndex:(NSInteger)childIndex { NSPasteboard *pboard = [info draggingPasteboard]; NSURL *fileURL; if ( [[pboard types] containsObject:NSURLPboardType] ) { fileURL = [NSURL URLFromPasteboard:pboard]; // Perform operation using the file’s URL } NSData *data = [pboard dataForType:@"NSPasteboardTypePDF"]; But this never actually gets any data. Like I said before, it does get the URL, just not the data. Does anyone have any advise on how to get this going? Thanks so much!

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  • Convert Virtual Key Code to unicode string

    - by Joshua Weinberg
    I have some code I've been using to get the current keyboard layout and convert a virtual key code into a string. This works great in most situations, but I'm having trouble with some specific cases. The one that brought this to light is the accent key next to the backspace key on german QWERTZ keyboards. http://en.wikipedia.org/wiki/File:KB_Germany.svg That key generates the VK code I'd expect kVK_ANSI_Equal but when using a QWERTZ keyboard layout I get no description back. Its ending up as a dead key because its supposed to be composed with another key. Is there any way to catch these cases and do the proper conversion? My current code is below. TISInputSourceRef currentKeyboard = TISCopyCurrentKeyboardInputSource(); CFDataRef uchr = (CFDataRef)TISGetInputSourceProperty(currentKeyboard, kTISPropertyUnicodeKeyLayoutData); const UCKeyboardLayout *keyboardLayout = (const UCKeyboardLayout*)CFDataGetBytePtr(uchr); if(keyboardLayout) { UInt32 deadKeyState = 0; UniCharCount maxStringLength = 255; UniCharCount actualStringLength = 0; UniChar unicodeString[maxStringLength]; OSStatus status = UCKeyTranslate(keyboardLayout, keyCode, kUCKeyActionDown, 0, LMGetKbdType(), kUCKeyTranslateNoDeadKeysBit, &deadKeyState, maxStringLength, &actualStringLength, unicodeString); if(actualStringLength > 0 && status == noErr) return [[NSString stringWithCharacters:unicodeString length:(NSInteger)actualStringLength] uppercaseString]; }

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  • Received memory warning. Level=2, Program received signal: “0”.

    - by sabby
    Hi friends I am getting images from webservice and loading these images in table view.But when i continue to scroll the program receives memory warning level1,level2 and then app exits with status 0.That happens only in device not in simulator. Here is my code which i am putting please help me out. - (void)viewDidLoad { [super viewDidLoad]; UIButton *infoButton = [[UIButton alloc] initWithFrame:CGRectMake(0, -4, 62, 30)]; [infoButton setBackgroundImage:[UIImage imageNamed: @"back.png"] forState:UIControlStateNormal]; [infoButton addTarget:self action:@selector(backButtonClicked) forControlEvents:UIControlEventTouchUpInside]; UIBarButtonItem *customBarButtomItem = [[UIBarButtonItem alloc] initWithCustomView:infoButton]; self.navigationItem.leftBarButtonItem = customBarButtomItem; [customBarButtomItem release]; [infoButton release]; UIButton *homeButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 62, 30)]; [homeButton setBackgroundImage:[UIImage imageNamed: @"home.png"] forState:UIControlStateNormal]; [homeButton.titleLabel setFont:[UIFont systemFontOfSize:11]]; //[homeButton setTitle:@"UPLOAD" forState:UIControlStateNormal]; [homeButton addTarget:self action:@selector(homeButtonClicked) forControlEvents:UIControlEventTouchUpInside]; UIBarButtonItem *rightBarButtom = [[UIBarButtonItem alloc] initWithCustomView:homeButton]; self.navigationItem.rightBarButtonItem = rightBarButtom; [rightBarButtom release]; [homeButton release]; sellerTableView=[[UITableView alloc]initWithFrame:CGRectMake(0, 0, 320, 416) style:UITableViewStylePlain]; sellerTableView.delegate=self; sellerTableView.dataSource=self; sellerTableView.backgroundColor=[UIColor clearColor]; sellerTableView.scrollEnabled=YES; //table.separatorColor=[UIColor grayColor]; //table.separatorColor=[UIColor whiteColor]; //[[table layer]setRoundingMode:NSNumberFormatterRoundDown]; [[sellerTableView layer]setBorderColor:[[UIColor darkGrayColor]CGColor]]; [[sellerTableView layer]setBorderWidth:2]; //[[productTable layer]setCornerRadius:10.3F]; [self.view addSubview:sellerTableView]; appDel = (SnapItAppAppDelegate*)[[UIApplication sharedApplication] delegate]; } -(void)viewWillAppear:(BOOL)animated { spinner = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray]; spinner.center = self.view.center; [self.view addSubview:spinner]; [spinner startAnimating]; [[SnapItParsing sharedInstance]assignSender:self]; [[SnapItParsing sharedInstance]startParsingForShowProducts:appDel.userIdString]; [sellerTableView reloadData]; } -(void)showProducts:(NSMutableArray*)proArray { if (spinner) { [spinner stopAnimating]; [spinner removeFromSuperview]; [spinner release]; spinner = nil; } if ([[[proArray objectAtIndex:1]objectForKey:@"Success"]isEqualToString:@"True"]) { //[self.navigationController popViewControllerAnimated:YES]; //self.view.alpha=.12; if (productInfoArray) { [productInfoArray release]; } productInfoArray=[[NSMutableArray alloc]init]; for (int i=2; i<[proArray count]; i++) { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; [productInfoArray addObject:[proArray objectAtIndex:i]]; NSLog(@"data fetch array is====> /n%@",productInfoArray); [pool release]; } } } #pragma mark (tableview methods) - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{ return 100; } - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { //return [resultarray count]; return [productInfoArray count]; } -(void)loadImagesInBackground:(NSNumber *)index{ NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; NSMutableDictionary *frame = [[productInfoArray objectAtIndex:[index intValue]] retain]; //NSLog(@"frame value ==>%@",[[frame objectForKey:@"Image"]length]); NSString *frameImagePath = [NSString stringWithFormat:@"http://apple.com/snapit/products/%@",[frame objectForKey:@"Image"]]; NSData *imageData = [NSData dataWithContentsOfURL:[NSURL URLWithString:frameImagePath]]; NSLog(@"FRAME IMAGE%d",[[frame valueForKey:@"Image" ]length]); if([[frame valueForKey:@"Image"] length] == 0){ NSString *imagePath = [[NSString alloc] initWithFormat:@"%@/%@",[[NSBundle mainBundle] resourcePath],@"no_image.png"]; UIImage *image = [UIImage imageWithContentsOfFile:imagePath]; [frame setObject:image forKey:@"friendImage"]; [imagePath release]; //[image release]; } else { //NSData *imageData = [NSData dataWithContentsOfURL:[NSURL URLWithString:frameImagePath]]; NSLog(@"image data length ==>%d",[imageData length]); if([imageData length] == 0){ NSString *imagePath = [[NSString alloc] initWithFormat:@"%@/%@",[[NSBundle mainBundle] resourcePath],@"no_image.png"]; UIImage *image = [UIImage imageWithContentsOfFile:imagePath]; [frame setObject:image forKey:@"friendImage"]; [imagePath release]; //[image release]; } else { //UIImage *image = [[UIImage alloc] initWithData:imageData]; UIImage *image = [UIImage imageWithData:imageData]; [frame setObject:image forKey:@"friendImage"]; //[image release]; } } [frame release]; frame = nil; [self performSelectorOnMainThread:@selector(reloadTable:) withObject:[NSArray arrayWithObject:[NSIndexPath indexPathForRow:[index intValue] inSection:0]] waitUntilDone:NO]; [pool release]; } -(void)reloadTable:(NSArray *)array{ NSLog(@"array ==>%@",array); [sellerTableView reloadRowsAtIndexPaths:array withRowAnimation:UITableViewRowAnimationNone]; } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *celltype=@"cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:celltype]; for (UIView *view in cell.contentView.subviews) { [view removeFromSuperview]; } if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"cell"] autorelease]; cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; cell.backgroundColor=[UIColor clearColor]; //cell.textLabel.text=[[resultarray objectAtIndex:indexPath.row] valueForKey:@"Service"]; /*UIImage *indicatorImage = [UIImage imageNamed:@"indicator.png"]; cell.accessoryView = [[[UIImageView alloc] initWithImage:indicatorImage] autorelease];*/ /*NSThread *thread=[[NSThread alloc]initWithTarget:self selector:@selector() object:nil]; [thread setStackSize:44]; [thread start];*/ cell.backgroundView=[[[UIImageView alloc]initWithImage:[UIImage imageNamed:@"cell.png"]]autorelease]; // [[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"back.png"]] autorelease]; cell.selectionStyle=UITableViewCellSelectionStyleNone; } UIImageView *imageView= [[UIImageView alloc] initWithFrame:CGRectMake(19, 15, 75, 68)]; imageView.contentMode = UIViewContentModeScaleToFill; // @synchronized(self) //{ NSMutableDictionary *dict = [productInfoArray objectAtIndex:indexPath.row]; if([dict objectForKey:@"friendImage"] == nil){ imageView.backgroundColor = [UIColor clearColor]; if ([dict objectForKey:@"isThreadLaunched"] == nil) { [NSThread detachNewThreadSelector:@selector(loadImagesInBackground:) toTarget:self withObject:[NSNumber numberWithInt:indexPath.row]]; [dict setObject:@"Yes" forKey:@"isThreadLaunched"]; } }else { imageView.image =[dict objectForKey:@"friendImage"]; } //NSString *imagePath = [[NSString alloc] initWithFormat:@"%@/%@",[[NSBundle mainBundle] resourcePath],@"no_image.png"]; //imageView.layer.cornerRadius = 20.0;//vk //imageView.image=[UIImage imageWithContentsOfFile:imagePath]; //imageView.layer.masksToBounds = YES; //imageView.layer.borderColor = [UIColor darkGrayColor].CGColor; //imageView.layer.borderWidth = 1.0;//vk //imageView.layer.cornerRadius=7.2f; [cell.contentView addSubview:imageView]; //[imagePath release]; [imageView release]; imageView = nil; //} UILabel *productCodeLabel = [[UILabel alloc] initWithFrame:CGRectMake(105, 7, 60,20 )]; productCodeLabel.textColor = [UIColor whiteColor]; productCodeLabel.backgroundColor=[UIColor clearColor]; productCodeLabel.text=[NSString stringWithFormat:@"%@",@"Code"]; [cell.contentView addSubview:productCodeLabel]; [productCodeLabel release]; UILabel *CodeValueLabel = [[UILabel alloc] initWithFrame:CGRectMake(170, 7, 140,20 )]; CodeValueLabel.textColor = [UIColor whiteColor]; CodeValueLabel.backgroundColor=[UIColor clearColor]; CodeValueLabel.text=[NSString stringWithFormat:@"%@",[[productInfoArray objectAtIndex:indexPath.row]valueForKey:@"ID"]]; [cell.contentView addSubview:CodeValueLabel]; [CodeValueLabel release]; UILabel *productNameLabel = [[UILabel alloc] initWithFrame:CGRectMake(105, 35, 60,20 )]; productNameLabel.textColor = [UIColor whiteColor]; productNameLabel.backgroundColor=[UIColor clearColor]; productNameLabel.text=[NSString stringWithFormat:@"%@",@"Name"]; [cell.contentView addSubview:productNameLabel]; [productNameLabel release]; UILabel *NameValueLabel = [[UILabel alloc] initWithFrame:CGRectMake(170, 35, 140,20 )]; NameValueLabel.textColor = [UIColor whiteColor]; NameValueLabel.backgroundColor=[UIColor clearColor]; NameValueLabel.text=[NSString stringWithFormat:@"%@",[[productInfoArray objectAtIndex:indexPath.row]valueForKey:@"Title"]]; [cell.contentView addSubview:NameValueLabel]; [NameValueLabel release]; UILabel *dateLabel = [[UILabel alloc] initWithFrame:CGRectMake(105, 68, 60,20 )]; dateLabel.textColor = [UIColor whiteColor]; dateLabel.backgroundColor=[UIColor clearColor]; dateLabel.text=[NSString stringWithFormat:@"%@",@"Date"]; [cell.contentView addSubview:dateLabel]; [dateLabel release]; UILabel *dateValueLabel = [[UILabel alloc] initWithFrame:CGRectMake(170, 68, 140,20 )]; dateValueLabel.textColor = [UIColor whiteColor]; dateValueLabel.backgroundColor=[UIColor clearColor]; dateValueLabel.text=[NSString stringWithFormat:@"%@",[[productInfoArray objectAtIndex:indexPath.row]valueForKey:@"PostedDate"]]; dateValueLabel.font=[UIFont systemFontOfSize:14]; dateValueLabel.numberOfLines=3; dateValueLabel.adjustsFontSizeToFitWidth=YES; [dateValueLabel setLineBreakMode:UILineBreakModeCharacterWrap]; [cell.contentView addSubview:dateValueLabel]; [dateValueLabel release]; } Please-2 help me out ,where i am doing mistake.....

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