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  • save UIImageView state & the save the Entire View

    - by adamprocter
    I have an iPad app where you add photos to a page. I then want to save the photos positions, then add further pages with more photo positions and eventually save all the pagesto be looked at later in a slideshow style. Can anyone advise 1. Saving UIImageView states when moving to new views (or swapping views) - I see this on using NSCoding iPhone - save UIImageView state - but am at a lose - any more examples ? 2. How to save the 'entire' set of view to look at later (like a slideshow) - no idea on where to start with this ? array ? coredata ? Thanks

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  • why i change the alpha value of UIImageView but no effect?

    - by chancy
    I am working on a reader app. when you read one magazine, it will display first five pages and download the rest pages one by one. there is a scrollview to view the thumbnail image of pages. At the beginning, if the page needs downloading, the corresponding thumbnail view's alpha value is set to 0.5. when the page is downloaded, i will update the thumbnail view's value to 1.0. I use one operation to download the page, and when one is downloaded i use delegate to set thumbnail view's alpha. But when i update thumbnail view's alpha value, it still the same as the beginning. it seems the alpha has no effect. I wonder is there anything wrong with my code? some snippets are as follows: In the PageViewController.m - (void)downloadPages { DownloadOperation *op = [[DownloadOperation alloc] initWithMagazine:magazine]; op.delegate = self; [[(AppDelegate *)[[UIApplication sharedApplication] delegate] sharedOperationQueue] addOperation:op]; } - (void)downloadOperation:(DownloadOperation *)operation finishedAtIndex:(NSUInteger)index { if (thumbScrollView){ [thumbScrollView viewWithTag:THUMBVIEW_OFFSET+index].alpha = 1.0; } } In DownloadOperation.m - (void)main { // ... NSUInteger index = 0; for (Page *page in mMagazine.pages) { if (/*page doesn't exist*/){ // download the page; if ([delegate respondsToSelector:@selector(downloadOperation:finishedAtIndex:)]) { [delegate downloadOperation:self finishedAtIndex:index]; } } index++; } }

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  • UIView rotate and than move

    - by user1790354
    I have problem with rotating and moving image (UIView). If I use this for rotate: [UIView beginAnimations: @"rotate" contex: nil]; [UIView setAnimationDuration: 1]; [UIView setAnimationBeginsFromCurrentState: YES]; [UIView setAnimationCurve: UIViewAnimationCurveLinear]; spaceShip.transform = CGAffineTransformMakeRotation (angle); // spaceShip is the UIView [UIView commitAnimations]; And this to move: [UIView beginAnimations: @"move" contex: nil]; [UIView setAnimationDuration: 1]; [UIView setAnimationBeginsFromCurrentState: YES]; [UIView setAnimationCurve: UIViewAnimationCurveLinear]; spaceShip.center = destanation // destanation is a point where user tap [UIView commitAnimations]; It's working well one at a time. But together this two animations don't work. Space Ship is rotating, but does not move in direction. Where my mistake? P.S. Early I have specify anchor point (0.5, 0.5). But when I rotate image it coordinates is changing.

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  • Call IBAction in other method

    - by user1628083
    I have an IBAction of SignIn and Method getData. When load it call SignIn into method Getdata in case I want auto sign in without click button Sign In. -(void)getData {       if ([_remCheckbox state] == NSOnState)     {         NSUserDefaults *store = [NSUserDefaults standardUserDefaults];                  NSString *un = [store objectForKey:@"usrname"];         NSString *pw = [store objectForKey:@"usrpwd"];                  _txtUsername.stringValue = un;         _txtPwd.stringValue = pw;                  //call event IBAction              }   } - (IBAction)buttonSignIn:(id)sender {     //Signin code suppose to work fine }

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  • UITableView with multiple selections

    - by NewDev
    I have a UITableView with multiple selections enabled. If I select items and scroll the list back and forth they are remembered and shown and selected (blue background). Using the didDeselectRowAtIndexPath and didSelectRowAtIndexPath I am able to keep my own array of selected items. That part works well. However, if I then use the sectionForSectionIndexTitle and jump to a letter, the selection appears to be forgotten - even indexPathForSelectedRows appears to have been reset and is now empty. My own array remembers that an item is selected and I can set the cell.selected in the cellForRowAtIndexPath but the instant I move the list it is forgotten again. Any ideas? Is this a bug, or how do you retain the selection list when jumping to a letter?

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  • Why I can not find my Iphone device in xcode

    - by itenyh
    I have added my iphone as device and associate it with provisioning. Then I download the newest provisioning and install it (I have successed added ipad as test device before). Now, in the "Organizer", I can see the iphone device but when I connect iphone device I can not find the iphone device to run my app. My software version is 4.2.1, is it the version not the latest that lead to this problem? Or what is the possible reason?

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  • Objective C convention: When to use For and when to use With

    - by Howard
    According to the Apple guideline , seems it is confusing, e.g. for method viewWithTag In Java, I would have a method called getViewByTag // Java version, equivalent to viewWithTag in Obj-C But I also found there are some method like objectForKey, so why not just use objectWithKey instead? getObjectByKey or just get // Java version, equivalent to objectForKey, // but why not objectWithKey? Or not viewForKey above?

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  • best way to use CoreLocation across multiple views

    - by Matt
    I have two views in my app, one is a general view where CoreLocation works away calculating the users location while the user is doing other stuff in the view. The second view is accessed by the user when they touch a button allowing them to locate themselves more accurately using a mapview and MapKit, i would like the mapview in this view to show the location that CoreLocation has already identified in the first view AND to continue displaying this location based on updates from CoreLocation in the other view. Is the best way here to create a singleton that encapsulates the CoreLocation stuff and have this referenced in the view with the map, or to use notifications ? or to use some other better practice for my scenario ? Thanks

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  • I have submitted app to app store and app status came like 'Metadata Rejected' and following review status. I do not have login page

    - by user3717465
    We began the review of your app but are not able to continue because we need a demo account to fully access your app features. Please provide demo account details in the Review Notes section of the Version Information for your app. Please ensure that the information you provide includes any data necessary to demonstrate the functionality of your app features. You can provide demo account information, including passwords, in the Review Notes section of your iTunes Connect App Information. While your iTunes Connect Application State shows as Metadata Rejected, we don't require a new binary to correct this issue. Please visit iTunes Connect, Manage Your Applications. Select your app, then click View Details of the desired version. Click the Edit button next to Version Information to edit the Review Notes for your app, then click "Save". how to correct the meta data. because i do not have login account.

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  • Find the end/finish coordinates you a UISwipeGestureRecognizer

    - by Code
    I can find the start coordinates of where a swipe starts by doing the following - (void)oneFingerSwipeUp:(UISwipeGestureRecognizer *)recognizer { CGPoint point = [recognizer locationInView:[self view]]; NSLog(@"Swipe up - start location: %f,%f", point.x, point.y); } Is it possible to find the coordinates where the swipe ended? I looked into the docs and its not mentioned. Is there some work around for this? Many Thanks, -Code

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  • how can i show ccessarychecked cell values in alertbox

    - by adnan
    i have created uitableview and cell in uitableview are accessarychecked . i have implemented an action named -(IBAction) checkBoxClicked . what i need is that i wanted to show accessarychecked cell values in alertbox when i click on button this is the code which i have written #import "ViewController.h" @implementation ViewController @synthesize cell; - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { return 7; } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { cell= [tableView dequeueReusableCellWithIdentifier:@"cell"]; if (cell == nil) { cell = [[ UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"cell"]; } cell.textLabel.text = [myarray objectAtIndex:indexPath.row]; /* NSString *imagefile = [[NSBundle mainBundle] pathForResource:@"cellimage" ofType:@"png"]; UIImage *ui = [[UIImage alloc] initWithContentsOfFile:imagefile]; cell.imageView.image = ui;*/ NSString *check = [[NSBundle mainBundle] pathForResource:@"checkbox_not_ticked" ofType:@"png"]; UIImage *bi = [[UIImage alloc] initWithContentsOfFile:check]; cell.imageView.image = bi; cell.accessoryType = UITableViewCellAccessoryNone; return cell; [cell release]; } - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { cell = [tableView cellForRowAtIndexPath:indexPath]; if (cell.accessoryType == UITableViewCellAccessoryNone) { cell.accessoryType = UITableViewCellAccessoryCheckmark; } else { cell.accessoryType = UITableViewCellAccessoryNone; } } -(IBAction) checkBoxClicked { NSArray *array = [[NSArray alloc] initWithArray:[myarray objectAtIndex:cell.accessoryType]:UITableViewCellAccessoryCheckmark]; if (array.cell.accessoryType == UITableViewCellAccessoryCheckmark) { UIAlertView *msg = [[ UIAlertView alloc] initWithTitle:@"selected items are given: " message:array delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil, nil ]; [msg show ]; [msg release]; [myarray release]; } } //-(IBAction)checkBoxClicked{} - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Release any cached data, images, etc that aren't in use. } #pragma mark - View lifecycle - (void)viewDidLoad { myarray = [[NSArray alloc] initWithObjects:@"mondey",@"tuesday", @"wednesday",@"thursday",@"friday",@"saturday",@"sundey", nil]; [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. } - (void)viewDidUnload { [myarray release]; [super viewDidUnload]; // Release any retained subviews of the main view. // e.g. self.myOutlet = nil; } - (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; } - (void)viewDidAppear:(BOOL)animated { [super viewDidAppear:animated]; } - (void)viewWillDisappear:(BOOL)animated { [super viewWillDisappear:animated]; } - (void)viewDidDisappear:(BOOL)animated { [super viewDidDisappear:animated]; } - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { // Return YES for supported orientations return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown); } @end

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  • how to clear a data in tableviewcell again start reload?

    - by Ios_learner
    i'm developing a bluetooth apps.1) I want to hide a tableview when i start the apps..after i pressed a action button i want to enable a tableview.. 2)if i again press a action button means tableviewcell clear the data and show empty before searching..give me an idea.. some of the code- - (IBAction)connectButtonTouched:(id)sender { [self.deviceTable reloadData]; self.connectButton.enabled = YES; [self.deviceTable reloadData]; peripheralManager = [[PeripheralManager alloc] init]; peripheralManager.delegate = self; [peripheralManager scanForPeripheralsAndConnect]; [self.deviceTable reloadData]; [NSTimer scheduledTimerWithTimeInterval:(float)5.0 target:self selector:@selector (connectionTimer:) userInfo:nil repeats:YES]; alert=[[UIAlertView alloc] initWithTitle:@"Bluetooth" message:@"Scanning" delegate:nil cancelButtonTitle:@"Cancel" otherButtonTitles:nil]; UIActivityIndicatorView *progress=[[UIActivityIndicatorView alloc] initWithFrame:CGRectMake(125, 50, 30, 30)]; [alert addSubview:progress]; [progress startAnimating]; [alert show]; } tableview -(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { return 1; } -(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { return [device count]; } -(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier=@"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if(cell==nil) { cell =[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]; } cell.textLabel.text=[device objectAtIndex:indexPath.row]; cell.accessoryType=UITableViewCellAccessoryDetailDisclosureButton; return cell; } TableView Delegate - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { UITableViewCell *cell=[tableView cellForRowAtIndexPath:indexPath]; [self performSegueWithIdentifier:@"TableDetails" sender:tableView]; }

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  • UIView fine for iPhone 4in, but squashed in iPhone 3.5in

    - by coopersita
    I started a new project in the new Xcode, and I see that my default the main window is set to 320x548. I'm fine with that, but when I test my app, a view I added to my main xib, which is supposed to be 280x280, looks more like 280x200 when testing on 3.5in devices. I've tried changing the settings for that view in the xib, but nothing seems to affect it. How do I ensure background compatibility so that in older devices the view is the same size?

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  • does Apple allow template style apps to pass review?

    - by user1159677
    I have an app which will go to our clients and then they can have their clients install it. Meaning there would be multiple versions of the master app but with customization per client. example 200 of our clients get the master app and then can customize it (text and images only via web) Will Apple allow something like this? Is there another way to get around this distribution model? I guess a good example of it would be a real estate agent having an app that's customized and on the app store but it's still Brand XYZ's app. thanks in advance

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  • Use pushViewController within app Delegate

    - by FMT
    Hi there i want to use this code within the app delegate ChatController *chatController = [[AppDelegate appDelegate] instantiateViewControllerWithIdentifier:@"GroupController"]; chatController.targetUserid = userid; [self.navigationController pushViewController:groupChatController animated:YES]; how can i push viewcontroller from appdelegate i mean make the above code work cuz self.navigationcontroller doesnt work :$

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  • Objective C - creating concrete class instances from base class depending upon type

    - by indiantroy
    Just to give a real world example, say the base class is Vehicle and concrete classes are TwoWheeler and FourWheeler. Now the type of the vehicle - TwoWheeler or FourWheeler, is decided by the base class Vehicle. When I create an instance of TwoWheeler/FourWheeler using alloc-init method, it calls the super implementation like below to set the value of common properties defined in the Vehicle class and out of these properties one of them is type that actually decides if the type is TwoWheeler or FourWheeler. if (self = [super initWithDictionary:dict]){ [self setOtherAttributes:dict]; return self; } Now when I get a collection of vehicles some of them could be TwoWheeler and others will be FourWheeler. Hence I cannot directly create an instance of TwoWheeler or FourWheeler like this Vehicle *v = [[TwoWheeler alloc] initWithDictionary:dict]; Is there any way I can create an instance of base class and once I know the type, create an instance of child class depending upon type and return it. With the current implementation, it would result in infinite loop because I call super implementation from concrete class. What would be the perfect design to handle this scenario when I don't know which concrete class should be instantiated beforehand?

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  • Listing documents directory contents in UITableView

    - by user1493543
    So I've researched extensively on how to list the files in the documents directory in a table view and after much deliberation, came up with this code. Whenever I run this, the app crashes with EXEC_BAD_ACCESS. I've been busting my head for hours, so any help would be appreciated. All I'm doing is acquiring the files in the documents directory and trying to list them in a table view... Code is pasted in link below. http://pastie.org/4178767 Edit- App crashes in numberOfRowsInSection: method.

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  • Get current location using CLLocationCoordinate2D

    - by Mobility
    I am trying to get current location of user using CLLocationCoordinate2D. I want the values in the format like CLLocationCoordinate2D start = {-28.078694,153.382844 }; So that I can use them like following: NSString *urlAddress = [NSString stringWithFormat:@"http://maps.google.com/?saddr=%1.6f,%1.6f&daddr=%1.6f,%1.6f", start.latitude, start.longitude, destination.latitude, destination.longitude]; I used CLLocation *location = [[CLLocation alloc]init ]; CLLocationDegrees currentLatitude = location.coordinate.latitude; CLLocationDegrees currentLongitude = location.coordinate.longitude; to get current lat & long. But I am getting 0.000 for both when I try to test. I am testing on iPhone 4s. If there is any sample code, it will be great.

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  • The SVG text node disappear after change its text content

    - by sureone
    svg: <text xml:space="preserve" y="228" x="349.98" text-anchor="middle" stroke-width="0" stroke-linejoin="null" stroke-linecap="null" stroke-dasharray="null" stroke="#000000" fill="#000000" style="cursor: move; pointer-events: inherit;" font-size="24" font-family="serif" id="cur_b">cur_b</text> <text xml:space="preserve" y="222" x="103.98" text-anchor="middle" stroke-width="0" stroke-linejoin="null" stroke-linecap="null" stroke-dasharray="null" stroke="#000000" fill="#000000" style="cursor: move; pointer-events: inherit;" font-size="24" font-family="serif" id="cur_a">cur_a</text> <text xml:space="preserve" y="229" x="590.0211" text-anchor="middle" stroke-width="0" stroke-linejoin="null" stroke-linecap="null" stroke-dasharray="null" stroke="#000000" fill="#000000" style="cursor: move; pointer-events: inherit;" font-size="24" font-family="serif" id="cur_c">cur_c</text> NSString* theJS = @ "var theNode0 = document.getElementById('cur_a'); theNode0.textContent='200A'; theNode0.setAttribute('fill','#FF0000'); var theNode1 = document.getElementById('cur_c'); theNode1.textContent='200A'; theNode1.setAttribute('fill','#00FF00');" [self.webView stringByEvaluatingJavaScriptFromString:theJS]; The SVG text node value is changed but disappeared after about one second.

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  • UITextField in UITableViewCell Help

    - by W Dyson
    Hello All, I have scoured the internet looking for a good tutorial or posting about having a UITableView populated with a UITextField in each cell for data entry. I want to keep track of each UITextField and the text written within it while scrolling. The tableView will be sectioned. I have been using a custom UITableViewCell but I'm open to any method. Also, is it possible to use the textFields as ivars? If any of you could point me in the right direction, it would be greatly appreciated. Thank you in advance!

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  • how can I read only one value of my dictionary?

    - by Gianfranco Cotumaccio
    I created my own dictionary by taking the values ??from a json file in the dictionary I have a set of values??, the other can take them and use them, instead of these start with a brace can not seem to get them: weather = ( { description = "broken clouds"; icon = 04d; id = 803; main = Clouds; } ); Use this command to take the values ??in the Dictionary: NSString *currweather = myDict[@"weather"][@"main"]; The application quits when the launch. How can I fix?

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  • Passing data from one viewcontroller to another

    - by user1392515
    I subclassed two view controllers. The first one is supposed to pass data, a NSUrl object to the second one. .m of the first one: NSURL *temp = [NSURL URLWithString:@"http://example.com"]; UIViewController *presentationsFullScreen_ViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"PresentationsFullScreen_ViewController"]; presentationsFullScreen_ViewController.urlToUse = temp; .h of the second one: #import <UIKit/UIKit.h> @interface PresentationsFullScreen_ViewController : UIViewController { NSURL *urlToUse; } @property (nonatomic,retain) NSURL *urlToUse; It is obviously not working and not compiling,telling me essentially that I didn't subclass it and that the property urlToUse is not found on UIViewController. How do I subclass correctly? Thanks!

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  • NSTimer won't stop it only resets when invalidated & released

    - by J Fries
    When I press my stop button to stop the timer it just resets to the original time and begins counting down again. I have looked everywhere and all I have found is "invalidate" and it isn't working. I want the time to stop when I hit stop and the label to display the original time. I also turned off automatic counting so I could try releasing and it is giving me an error: 0x10e20a5: movl 16(%edx), %edx EXC_BAD_ACCESS (code=2, address=0x10) `NSTimer *rockettTimer; int rocketCount; @interface FirstViewController () @property (strong, nonatomic) IBOutlet UILabel *rocketTimer; - (IBAction)stopButton:(id)sender; - (IBAction)startButton:(id)sender; @end @implementation FirstViewController @synthesize rocketTimer; -(void) rocketTimerRun{ rocketCount = rocketCount - 1; int minuts = rocketCount / 60; int seconds = rocketCount - (minuts * 60); NSString *timerOutput = [NSString stringWithFormat:@"%d:%.2d", minuts, seconds]; rocketTimer.text = timerOutput; } - (IBAction)startButton:(id)sender { rocketCount = 180; rockettTimer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(rocketTimerRun) userInfo:nil repeats:YES]; - (IBAction)stopButton:(id)sender { [rockettTimer invalidate]; //[rockettTimer release]; } - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. } - (void)viewDidUnload { [self setRocketTimer:nil]; [super viewDidUnload]; // Release any retained subviews of the main view. } - (BOOL)shouldAutorotateToInterfaceOrientation: (UIInterfaceOrientation)interfaceOrientation { if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) { return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown); } else { return YES; } } @end`

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  • UITableView cell selection disabled and UITableViewHeader Enabled

    - by andyPaul
    I am adding a my header view to self.tableView.tableHeaderView=headerView; This tableView has 10 cells. I want to disable the cell Selection but, headerView touch events must be enabled. To achieve this I added the following code: self.tableView.userInteractionDisabled=YES; self.headerView.userInteractionDisabled=NO; self.headerView.exclusiveTouch=YES; Where I am wrong? Basic idea of implementation is , If headerView is enabled then cell selection is disabled and vice-versa.

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  • Trouble accessing Mutable array

    - by Jared Gross
    Im having trouble with my for loop where I am trying to index user names. I am able to separate my original array into individual objects but am not able to send the value to a new array that I need to reference later on. The value and count for userNames in my self.userNamesArray = userNames; line is correct. But right after that when I log self.userNamesArray, I get (null). Any tips cause I'm not completely sure I'm cheers! .h @property (nonatomic, copy) NSMutableArray *userNamesArray; .m - (void)viewWillAppear:(BOOL)animated { self.friendsRelation = [[PFUser currentUser] objectForKey:@"friendsRelation"]; PFQuery *query = [self.friendsRelation query]; [query orderByAscending:@"username"]; [query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) { if (error) { NSLog(@"Error: %@ %@", error, [error userInfo]); } else { self.friends = objects; NSArray *users = [self.friends valueForKey:@"username"]; NSLog(@"username:%@", users); //Create an array of name wrappers and pass to the root view controller. NSMutableArray *userNames = [[NSMutableArray alloc] initWithCapacity:[self.friends count]]; for (NSString *user in users) { componentsSeparatedByCharactersInSet:charSet]; NSArray *nameComponents = [user componentsSeparatedByString:@" "]; UserNameWrapper *userNameWrapper = [[UserNameWrapper alloc] initWithUserName:nil nameComponents:nameComponents]; [userNames addObject:userNameWrapper]; } self.userNamesArray = userNames; NSLog(@"userNamesArray:%@",self.userNamesArray); [self.tableView reloadData]; } Here's the code where I need to reference the self.userNamesArray where again, it is comping up nil. - (void)setUserNamesArray:(NSMutableArray *)newDataArray { if (newDataArray != self.userNamesArray) { self.userNamesArray = [newDataArray mutableCopy]; if (self.userNamesArray == nil) { self.sectionsArray = nil; NSLog(@"user names empty"); } else { [self configureSections]; } } }

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