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  • managedObjectContext question...

    - by treasure
    Hello, I have an app which is a UITabBarController, I have defined two subviews Both tabs have their Class attribute in the Identity Inspector set to UINavigationController. Now i have managed to get this far with my coding after VERY LONG trials. - (void)viewDidLoad { [super viewDidLoad]; myAppDelegate *appDelegate = (myAppDelegate *)[[UIApplication sharedApplication] delegate]; self.managedObjectContext = appDelegate.managedObjectContext; { NSError *error = nil; NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; [fetchRequest setEntity:[NSEntityDescription entityForName:@"User" inManagedObjectContext:self.managedObjectContext]]; NSArray *fetchedItems = [self.managedObjectContext executeFetchRequest:fetchRequest error:&error]; NSEntityDescription *entityDesc = [NSEntityDescription entityForName:@"User" inManagedObjectContext:self.managedObjectContext]; // replace the old data with new. this DOESNT WORK if (fetchedItems.count > 0) { Usr *newUsr; for (newUsr in fetchedItems) { if ([newUsr.name isEqualToString:@"Line One"]) { newUsr.uName = @"Line One (new)"; } } } //add a new default data. THIS ADDS DATA TO MY TABLEVIEW BUT IT DOESNT SAVE THEM TO THE SQLITE User *addedDefaultdata = nil; addedDefaultdata = [[User alloc] initWithEntity:entityDesc insertIntoManagedObjectContext:self.managedObjectContext]; addedDefaultdata.name = @"Added new 1"; [addedDefaultdata release]; } NSError *error = nil; if (![[self fetchedResultsController] performFetch:&error]) { NSLog(@"Unresolved error %@, %@", error, [error userInfo]); abort(); } } and my appdelegate looks like this: - (void)applicationDidFinishLaunching:(UIApplication *)application { [application setStatusBarStyle:UIStatusBarStyleBlackOpaque]; [window addSubview:navigationController.view]; [window makeKeyAndVisible]; } now I cannot quire the "User" at all! although i get no errors or warnings! Any suggestions would be much appreciated! Thanks

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  • Blackberry screen navigation probelm

    - by dalandroid
    I have a Screen name DownloaderScreen when the screen start it will start download some file and when download is complete it will go forward to next screen autometically. I using the following code. public DownloaderScreen() { super(NO_VERTICAL_SCROLL | NO_HORIZONTAL_SCROLL | USE_ALL_HEIGHT | USE_ALL_WIDTH); this.application = UiApplication.getUiApplication(); HorizontalFieldManager outerBlock = new HorizontalFieldManager(USE_ALL_HEIGHT); VerticalFieldManager innerBlock = new VerticalFieldManager(USE_ALL_WIDTH | FIELD_VCENTER); innerBlock.setPadding(0, 10, 0, 10); outerBlock.setBackground(BackgroundFactory .createBitmapBackground(LangValue.dlBgimg)); outerBlock.add(innerBlock); add(outerBlock); phraseHelper = new PhraseHelper(); final String[][] phraseList = phraseHelper.getDownloadList(); gaugeField = new GaugeField("Downloading ", 0, phraseList.length, 0, GaugeField.PERCENT); innerBlock.add(gaugeField); Thread dlTread = new Thread() { public void run() { startDownload(phraseList); } }; dlTread.start(); } private void startDownload(String[][] phraseList){ if(phraseList.length!=0){ for(int i=0; i < phraseList.length ; i++){// gaugeField.setValue(i); // code for download } } goToNext(); } private void goToNext() { final Screen currentScreen = application.getActiveScreen(); if (UiApplication.isEventDispatchThread()) { application.popScreen(currentScreen); application.pushScreen(new HomeScreen()); } else { application.invokeLater(new Runnable() { public void run() { application.popScreen(currentScreen); application.pushScreen(new HomeScreen()); } }); } } The code is working fine and starts download files and when download is completed it is going forward to next screen. But when there is no file to download phraseList array length is zero, it is not going forward. What is problem in my code?

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  • Unsure how i load the right data into a tableview, chosen from a previous tableview.

    - by Bob
    I currently have two TableViewControllers. The first has seven objects, each day-name listed. Weekdays *mandag = [[Weekdays alloc] initWithName:@"Mandag" daylist:mondayArray]; Weekdays *tirsdag = [[Weekdays alloc] initWithName:@"Tirsdag" daylist:tuesdayArray]; Weekdays *onsdag = [[Weekdays alloc] initWithName:@"Onsdag" daylist:wedensdayArray]; Weekdays *torsdag = [[Weekdays alloc] initWithName:@"Torsdag" daylist:thursdayArray]; Weekdays *fredag = [[Weekdays alloc] initWithName:@"Fredag" daylist:fridayArray]; Weekdays *lordag = [[Weekdays alloc] initWithName:@"Lørdag" daylist:saturdayArray]; Weekdays *sondag = [[Weekdays alloc] initWithName:@"Søndag" daylist:sundayArray]; daylist being a NSMutableArray. The idea is: The name of the day is displayed on table-1. And the array (daylist) of each day is displayed on table-2 - when tabbed one a day. The first table, displaying the names is working fine: VisueltSkemaAppDelegate *appDelegate = (VisueltSkemaAppDelegate *)[[UIApplication sharedApplication] delegate]; Weekdays *ugeDag = (Weekdays *)[appDelegate.ugeDage objectAtIndex:indexPath.row]; cell.textLabel.text = ugeDag.name; return cell; However i thought i could do the same, for the second table - but i have been strugling with it for hours now. This is what i got: VisueltSkemaAppDelegate *appDelegate = (VisueltSkemaAppDelegate *)[[UIApplication sharedApplication] delegate]; Weekdays *ugeDag = (Weekdays *)[appDelegate.ugeDage objectAtIndex:indexPath.row]; cell.textLabel.text = [ugeDag.daylist objectAtIndex:indexPath.row]; return cell; Abit more of the code: http://pastebin.com/iW5AAJXt

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  • Blackberry - Exception when sending SMS programmatically

    - by user213199
    Hello all, I am developing a Blackberry application. I am trying to send SMS programmatically to GSM number. I have gone through many queries and answers related to that and finally added the code for that as below. When the code tries to execute sending some text message to the particular mobile number, it doesn't send and throws exception as "blocking operation not permitted on event dispatch thread". So i created a separate background thread where i put the SMS code and running the code now. But still observing the same exception. Could someone please suggest what am i doing wrong (or) how to do that? class DummyFirst extends MainScreen { private Bitmap background; private VerticalFieldManager _container; private VerticalFieldManager mainVerticalManager; private HorizontalFieldManager horizontalFldManager; private BackGroundThread _thread; CustomControl buttonControl1; public DummyFirst() { super(); LabelField appTitle = new LabelField("Dummy App"); setTitle(appTitle); background = Bitmap.getBitmapResource("HomeBack.png"); _container = new VerticalFieldManager(Manager.NO_VERTICAL_SCROLL | Manager.NO_VERTICAL_SCROLLBAR) { protected void paint(Graphics g) { // Instead of these next two lines, draw your bitmap int y = DummyFirst.this.getMainManager() .getVerticalScroll(); g.clear(); g.drawBitmap(0, 0, background.getWidth(), background .getHeight(), background, 0, 0); super.paint(g); } protected void sublayout(int maxWidth, int maxHeight) { int width = background.getWidth(); int height = background.getHeight(); super.sublayout(width, height); setExtent(width, height); } }; mainVerticalManager = new VerticalFieldManager( Manager.NO_VERTICAL_SCROLL | Manager.NO_VERTICAL_SCROLLBAR) { protected void sublayout(int maxWidth, int maxHeight) { int width = background.getWidth(); int height = background.getHeight(); super.sublayout(width, height); setExtent(width, height); } }; HorizontalFieldManager horizontalFldManager = new HorizontalFieldManager(Manager.USE_ALL_WIDTH); buttonControl1 = new CustomControl("Send", ButtonField.CONSUME_CLICK, 83, 15); horizontalFldManager.add(buttonControl1); this.setStatus(horizontalFldManager); FieldListener listner = new FieldListener(); buttonControl1.setChangeListener(listner); _container.add(mainVerticalManager); this.add(_container); } class FieldListener implements FieldChangeListener { public void fieldChanged(Field f, int context) { if (f == buttonControl1) { _thread = new BackGroundThread(); _thread.start(); } } } private class BackGroundThread extends Thread { public BackGroundThread() { /*** initialize parameters in constructor *****/ } public void run() { // UiApplication.getUiApplication().invokeLater(new Runnable() UiApplication.getUiApplication().invokeLater(new Runnable() { public void run() { try { MessageConnection msgConn = (MessageConnection) Connector .open("sms://:0"); Message msg = msgConn .newMessage( MessageConnection.TEXT_MESSAGE); TextMessage txtMsg = (TextMessage) msg; String msgAdr = "sms://+919861348735"; txtMsg.setAddress(msgAdr); txtMsg.setPayloadText("Test Message"); // here exception is thrown msgConn.send(txtMsg); System.out.println("Sending" + " SMS success !!!"); } catch (Exception e) { System.out.println(e.getMessage()); e.printStackTrace(); } } // run }); } } public boolean onClose() { System.out.println("close event called, request to be" + " in the backgroud...."); UiApplication.getUiApplication().requestBackground(); return true; } } I resolved this issue by creating a separate thread and then not using Port etc. Here it is: SMSThread smsthread = new SMSThread("Some message",mobNumber); smsthread.start(); class SMSThread extends Thread { Thread myThread; MessageConnection msgConn; String message; String mobilenumber; public SMSThread( String textMsg, String mobileNumber ) { message = textMsg; mobilenumber = mobileNumber; } public void run() { try { msgConn = (MessageConnection) Connector.open("sms://+"+ mobilenumber); TextMessage text = (TextMessage) msgConn.newMessage(MessageConnection.TEXT_MESSAGE); text.setPayloadText(message); msgConn.send(text); msgConn.close(); } catch (Exception e) { System.out.println("Exception: " + e); } } }

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  • UISplitView: how to access instance?

    - by chpwn
    I have a navigation controller in my left portion of my split view, and in the right portion. But sometimes, for example when an item is tapped, my left side must manually set the view controller on the right side. Where is the best place to store the split view controller instance? Pass it around to each view controller on the left side, like I do with the navigation controller? Store it in my App Delegate and then access it via a property with [[UIApplication sharedApplication] delegate].splitView?

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  • Here i m sending my code for presentmodelViewController

    - by aman-gupta
    Hi Please help me out i want to switch to first view from third view directly here is my code:-where i m using presentModelViewcontroller // // ExperimentAppDelegate.h // Experiment // // Created by Aman on 4/20/10. // Copyright __MyCompanyName__ 2010. All rights reserved. // #import <UIKit/UIKit.h> @class ExperimentViewController; @class SecondView; @class ThirdView; BOOL parentScreenNo; @interface ExperimentAppDelegate : NSObject <UIApplicationDelegate> { UIWindow *window; ExperimentViewController *viewController; SecondView *ptrSecond; ThirdView *ptrThird; } @property (nonatomic, retain) IBOutlet UIWindow *window; @property (nonatomic, retain) IBOutlet ExperimentViewController *viewController; @property (nonatomic, retain) IBOutlet SecondView *ptrSecond; @property (nonatomic, retain) IBOutlet ThirdView *ptrThird; @end ///////////////////////////////////// // // ExperimentAppDelegate.m // Experiment // // Created by Aman on 4/20/10. // Copyright __MyCompanyName__ 2010. All rights reserved. // #import "ExperimentAppDelegate.h" #import "ExperimentViewController.h" @implementation ExperimentAppDelegate @synthesize window; @synthesize viewController,ptrThird,ptrSecond; - (void)applicationDidFinishLaunching:(UIApplication *)application { parentScreenNo = NO; // Override point for customization after app launch [window addSubview:viewController.view]; [window makeKeyAndVisible]; } - (void)dealloc { [viewController release]; [window release]; [super dealloc]; } @end ///////////////////////////////////////// // // ExperimentViewController.h // Experiment // // Created by Aman on 4/20/10. // Copyright __MyCompanyName__ 2010. All rights reserved. // #import <UIKit/UIKit.h> @interface ExperimentViewController : UIViewController { } -(IBAction)second:(id)sender; @end /////////////////////////////// // // ExperimentViewController.m // Experiment // // Created by Aman on 4/20/10. // Copyright __MyCompanyName__ 2010. All rights reserved. // #import "ExperimentViewController.h" #import "ExperimentAppDelegate.h" @implementation ExperimentViewController /* // The designated initializer. Override to perform setup that is required before the view is loaded. - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) { // Custom initialization } return self; } */ -(IBAction)second:(id)sender { ExperimentAppDelegate *app = (ExperimentAppDelegate *)[[UIApplication sharedApplication]delegate]; [self presentModalViewController:app.ptrSecond animated:YES]; } /* // Implement loadView to create a view hierarchy programmatically, without using a nib. - (void)loadView { } */ /* // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { [super viewDidLoad]; } */ /* // Override to allow orientations other than the default portrait orientation. - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { // Return YES for supported orientations return (interfaceOrientation == UIInterfaceOrientationPortrait); } */ - (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Release any cached data, images, etc that aren't in use. } - (void)viewDidUnload { // Release any retained subviews of the main view. // e.g. self.myOutlet = nil; } - (void)dealloc { [super dealloc]; } @end ///////////////////////////////// // // SecondView.h // Experiment // // Created by Aman on 4/20/10. // Copyright 2010 __MyCompanyName__. All rights reserved. // #import <UIKit/UIKit.h> @interface SecondView : UIViewController { } -(IBAction)third:(id)sender; -(void)down; @end //////////////////////////////////////////// // // SecondView.m // Experiment // // Created by Aman on 4/20/10. // Copyright 2010 __MyCompanyName__. All rights reserved. // #import "SecondView.h" #import "ExperimentAppDelegate.h" @implementation SecondView /* // The designated initializer. Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad. - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) { // Custom initialization } return self; } */ // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { [super viewDidLoad]; } -(void)viewWillAppear:(BOOL)animated { if(parentScreenNo == YES) { [self performSelector:@selector(down) withObject:nil]; } [super viewWillAppear:YES]; } -(IBAction)third:(id)sender { ExperimentAppDelegate *app = (ExperimentAppDelegate *)[[UIApplication sharedApplication]delegate]; [self presentModalViewController:app.ptrThird animated:YES]; } -(void)down { [self dismissModalViewControllerAnimated:YES]; } /* // Override to allow orientations other than the default portrait orientation. - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { // Return YES for supported orientations return (interfaceOrientation == UIInterfaceOrientationPortrait); } */ - (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Release any cached data, images, etc that aren't in use. } - (void)viewDidUnload { // Release any retained subviews of the main view. // e.g. self.myOutlet = nil; } - (void)dealloc { [super dealloc]; } @end ////////////////////////////////// // // ThirdView.h // Experiment // // Created by Aman on 4/20/10. // Copyright 2010 __MyCompanyName__. All rights reserved. // #import <UIKit/UIKit.h> @interface ThirdView : UIViewController { } -(IBAction)back:(id)sender; @end ////////////////////////////////// // // ThirdView.m // Experiment // // Created by Aman on 4/20/10. // Copyright 2010 __MyCompanyName__. All rights reserved. // #import "ThirdView.h" #import "ExperimentAppDelegate.h" @implementation ThirdView /* // The designated initializer. Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad. - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) { // Custom initialization } return self; } */ /* // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { [super viewDidLoad]; } */ -(IBAction)back:(id)sender { [self dismissModalViewControllerAnimated:YES]; parentScreenNo = YES; } /* // Override to allow orientations other than the default portrait orientation. - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { // Return YES for supported orientations return (interfaceOrientation == UIInterfaceOrientationPortrait); } */ - (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Release any cached data, images, etc that aren't in use. } - (void)viewDidUnload { // Release any retained subviews of the main view. // e.g. self.myOutlet = nil; } - (void)dealloc { [super dealloc]; } @end Above is my code for calling other view please tell how i can call my first view by using dismismodelViewController from third screen Please help me out

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  • iPhone simulator and applicationWillTerminate()

    - by firstresponder
    When my app is run in the iPhone simulator, the delegate method - (void)applicationWillTerminate:(UIApplication *)application is only called the first time I hit the iPhone simulator's home button. After the home button is pressed and the app is launched again, hitting the home button does not call the delegate method. What is going on here? Am I misunderstanding something fundamental?

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  • No visible @interface for 'AppDelegate' declares the selector

    - by coolhongly
    I'm now writing a registration screen before my tabBar shows up. My idea is to show my registration screen through this method (no dismiss function for now): - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { // Override point for customization after application launch. Register *registerView = [[Register alloc] initWithNibName:nil bundle:nil]; [self presentModalViewController:registerView animated:YES]; return YES; } Which is in AppDelegate.m Unfortunately it doesn't work. Could you help me solve this please?

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  • Why does my UIActivityIndicatorView only display once?

    - by Schwigg
    I'm developing an iPhone app that features a tab-bar based navigation with five tabs. Each tab contains a UITableView whose data is retrieved remotely. Ideally, I would like to use a single UIActivityIndicatorView (a subview of the window) that is started/stopped during this remote retrieval - once per tab. Here's how I set up the spinner in the AppDelegate: - (void)applicationDidFinishLaunching:(UIApplication *)application { [window addSubview:rootController.view]; activityIndicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge]; [activityIndicator setCenter:CGPointMake(160, 200)]; [window addSubview:activityIndicator]; [window makeKeyAndVisible]; } Since my tabs were all performing a similiar function, I created a base class that all of my tabs' ViewControllers inherit from. Here is the method I'm using to do the remote retrieval: - (void)parseXMLFileAtURL:(NSString *)URL { NSAutoreleasePool *apool = [[NSAutoreleasePool alloc] init]; AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate]; NSLog(@"parseXMLFileAtURL started."); [appDelegate.activityIndicator startAnimating]; NSLog(@"appDelegate.activityIndicator: %@", appDelegate.activityIndicator); articles = [[NSMutableArray alloc] init]; NSURL *xmlURL = [NSURL URLWithString:URL]; rssParser = [[NSXMLParser alloc] initWithContentsOfURL:xmlURL]; [rssParser setDelegate:self]; [rssParser setShouldProcessNamespaces:NO]; [rssParser setShouldReportNamespacePrefixes:NO]; [rssParser setShouldResolveExternalEntities:NO]; [rssParser parse]; NSLog(@"parseXMLFileAtURL finished."); [appDelegate.activityIndicator stopAnimating]; [apool release]; } This method is being called by each view controller as follows: - (void)viewDidAppear:(BOOL)animated { [super viewDidAppear:animated]; if ([articles count] == 0) { NSString *path = @"http://www.myproject.com/rss1.xml"; [self performSelectorInBackground:@selector(parseXMLFileAtURL:) withObject:path]; } } This works great while the application loads the first tab's content. I'm presented with the empty table and the spinner. As soon as the content loads, the spinner goes away. Strangely, when I click the second tab, the NSLog messages from the -parseXMLFileAtURL: method show up in the log, but the screen hangs on the first tab's view and I do not see the spinner. As soon as the content is done downloading, the second tab's view appears. I suspect this has something to do with threading, with which I'm still becoming acquainted. Am I doing something obviously wrong here?

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  • I get EXC_BAD_ACCESS when MaxConcurrentOperationCount > 1

    - by kudorgyozo
    Hello i am using NSOperationQueue to download images in the background. I have created a custom NSOperation to download the images. I put the images in table cells. The problem is if I do [operationQueue setMaxConcurrentOperationCount: 10] and i scroll down several cells the program crashes with EXC_BAD_ACCESS. Every time it crashes at the same place in the table. There are 3 cells one after the other which are for the same company and have the same logo so basically it should download the images 3 times. Every other time it works fine. - (void) main { NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; NSURL *url = [[NSURL alloc] initWithString:self.imageURL]; debugLog(@"downloading image: %@", self.imageURL); //NSError *error = nil; NSData *data = [[NSData alloc] initWithContentsOfURL:url]; [url release]; UIImage *image = [[UIImage alloc] initWithData:data]; [data release]; if (image) { if (image.size.width != ICONWIDTH && image.size.height != ICONHEIGHT) { UIImage *resizedImage; CGSize itemSize = CGSizeMake(ICONWIDTH, ICONHEIGHT); UIGraphicsBeginImageContext(itemSize); CGRect imageRect = CGRectMake(0.0, 0.0, itemSize.width, itemSize.height); [image drawInRect:imageRect]; resizedImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); self.theImage = resizedImage; } else { self.theImage = image; } [image release]; } [delegate didFinishDownloadingImage: self]; [pool release]; } This is how i handle downloading the images. If i comment out [delegate didFinishDownloadingImage: self]; in the function above it doesn't crash but of course it is useless. -(void) didFinishDownloadingImage:(ImageDownloadOperation *) imageDownloader { [self performSelectorOnMainThread: @selector(handleDidFinishDownloadingImage:) withObject: imageDownloader waitUntilDone: FALSE]; } -(void) handleDidFinishDownloadingImage:(ImageDownloadOperation *)imageDownloadOperation { NSArray *visiblePaths = [self.myTableView indexPathsForVisibleRows]; CompanyImgDownloaderState *stateObject = (CompanyImgDownloaderState *)[imageDownloadOperation stateObject]; if ([visiblePaths containsObject: stateObject.indexPath]) { //debugLog(@"didFinishDownloadingImage %@ %@", imageDownloader.theImage); UITableViewCell *cell = [self.myTableView cellForRowAtIndexPath: stateObject.indexPath]; UIImageView *imageView = (UIImageView *)[cell viewWithTag: 1]; if (imageDownloadOperation.theImage) { imageView.image = imageDownloadOperation.theImage; stateObject.company.icon = imageDownloadOperation.theImage; } else { imageView.image = [(TestWebServiceAppDelegate *)[[UIApplication sharedApplication] delegate] getCylexIcon]; stateObject.company.icon = [(TestWebServiceAppDelegate *)[[UIApplication sharedApplication] delegate] getCylexIcon]; } } }

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  • Objective-C - open SMS

    - by teepusink
    Hi, How do I open SMS from my app and have the new message popped up and prepopulated? Right now this is what I have NSString *stringURL = @"sms:"; NSURL *url = [NSURL URLWithString:stringURL]; [[UIApplication sharedApplication] openURL:url]; That opens the SMS app but you have to click on new message etc. Thanks, Tee

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  • Great UIKit/Objective-C code snippets

    - by Nissan Fan
    New to Objective-C iPhone/iPod touch/iPad development, but I'm starting to discover lots of power in one-liners of code such as this: [UIApplication sharedApplication].applicationIconBadgeNumber = 10; Which will display that distinctive red notification badge on your app iphone with the number 10. Please share you favorite one or two-liners in Objective-C for the iPhone/iPod touch/iPad here. PUBLIC APIs ONLY.

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  • UIViewController rotate methods

    - by Corey Floyd
    What object is responsible for dipatching the UIViewController rotation method calls, i.e: – shouldAutorotateToInterfaceOrientation: – willRotateToInterfaceOrientation:duration: – willAnimateFirstHalfOfRotationToInterfaceOrientation:duration: – willAnimateSecondHalfOfRotationFromInterfaceOrientation:duration: – didRotateFromInterfaceOrientation: I imagine it is UIApplication (but maybe the AppDelegate or UIWindow). The next question, is how does the object know which UIViewController to talk to? How does it know which UIViewController has its view as the subview of the window? Is there a message you can send or a property you can set (of some object) that sets the "Active" UIViewController for the app?

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  • How do I send SMS without launching Text application?

    - by Thomas
    Hello all: I am developing a simple application which has to send an SMS message from the app itself instead of launching the native Text app. Here's my action now. What should I change to achieve my desired functionality? -(IBAction)startButtonPressed { NSString *phoneNumber = @"13136296693"; NSString *url = [NSString stringWithFormat: @"sms:%@",phoneNumber]; NSLog(@"Send SMS to: %@ ", url); [[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]]; } Thanks! Thomas

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  • UIAlertView won't rotate to landscape even with applicationDidFinishLaunching call

    - by Joey
    I am trying to use UIAlertView on my landscape right (home button on the right) app but it is showing up in portrait orientation. I have tried putting: [[UIApplication sharedApplication] setStatusBarOrientation: UIInterfaceOrientationLandscapeRight animated: NO ]; in applicationDidFinishLaunching, but it doesn't work. Are there any other usual suspects to what might be causing this? I am setting the orientation through my plist file currently.

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  • How can I launch app store from my application

    - by Tankista
    Im trying to implement button which opens app store application from my app. I use this simple line of code, which opens safari but not app store application. [[UIApplication sharedApplication] openURL:[NSURL URLWithString: @"http://itunes.apple.com/sk/app/tweetie-2/id333903271?mt=8"]]; I dont know whats wrong, is the URL format correct? I was following this document. All related questions in stackoverflow are outofdate I suppose.

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  • Great UIKit/Objective-C one-Liners

    - by Nissan Fan
    New to Objective-C iPhone/iPod touch/iPad development, but I'm starting to discover lots of power in one-liners of code such as this: [UIApplication sharedApplication].applicationIconBadgeNumber = 10; Which will display that distinctive red notification badge on your app iphone with the number 10. Please share you favorite one-liners in Objective-C for the iPhone/iPod touch/iPad here.

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  • Register/Set a new language default

    - by mongeta
    Hello, My app has some languages that the user can change whenever wants. The problem is that always uses the current device language selected, so at least my localizable strings are working as expected, but no matter wich language I set, I'm getting alwats the default selected of the device. Where I have to call this code? [[NSUserDefaults standardUserDefaults] registerDefaults: [NSDictionary dictionaryWithObject:[NSArray arrayWithObjects:@"ca", @"en", nil] forKey:@"AppleLanguages"]]; Currently I'm calling from the AppDelegate implementation file: - (void)applicationDidFinishLaunching:(UIApplication *)application { Thanks, r.

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  • registerForRemoteNotificationTypes causes app to exit immediately

    - by esilver
    I'm seeing behaviour on my iPhone where debug builds immediately exit after a call to [[UIApplication sharedApplication] registerForRemoteNotificationTypes:UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeAlert]; The debugger reports it exited with the message Terminating in response to SpringBoard's termination. This behaviour doesn't happen on my ad hoc distribution builds. Can anyone explain this behavior?

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  • iPhone OS: Tap status bar to scroll to top doesn't work after remove/add back

    - by avocade
    Using this method to hide the status bar: [[UIApplication sharedApplication] setStatusBarHidden:YES animated:YES]; When setting "hidden" back to NO, the tap-to-scroll-to-top (in UIWebView, UITableView, whatever) doesn't work any more, and requires a restart of the app to get the functionality back. Is this a bug (I filed a rdar anyhow) or have I missed a step? Should I perhaps expect this behavior since the statusBar "loses touch" somehow with the respective view?

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  • Launch Safari from iPhone App

    - by tarnfeld
    I know that i can use the following code to launch my own url, but i want the user to continue their workflow after using my bookmarklet so therefore don't want to open a new tab and have them re-load the url i put into the url variable? NSURL url* = [NSURL URLWithString:@"http://google.com"]; [[UIApplication sharedApplication] openUrl:""]; Can this be done?

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  • Multiple strings in openURL. iPhone SDK

    - by user354779
    Hello, I am making a twitter application for iPhone, I am trying to add a button which will open Safari, and take the user to their twitter homepage. I have a textfield called username, so the following code does not work, hopefully someone will be able to help me out. -(IBAction)viewAccount { [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://www.twitter.com/", username.text]]; } Any help is appreciated! Thank you!

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  • NSStream on Background didn't call

    - by Iphone Developer
    - (void)applicationDidEnterBackground:(UIApplication *)application { NSOutputStream *outputStream; NSInputStream *inputStream; dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{ [inputStream setDelegate:self]; [outputStream setDelegate:self]; [inputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSRunLoopCommonModes]; [outputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSRunLoopCommonModes]; [app endBackgroundTask:bgTask]; bgTask = UIBackgroundTaskInvalid; }); } Input,OutputStream delegate didn't call.What i am doing wrong.

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