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  • UISlider returns two Touch Up Inside events, why does that happen?

    - by willc2
    I have a slider that I'm using to set a float value somewhere. I connect Value Changed to a method in my viewController. That part works fine. I need to know when the user starts touching the control but not necessarily every single instant that the slider changes (I receive the Value Changed events for that). So I connected a Touch Up Inside event to another method in the viewController. The problem it, that method gets called twice when the user touches the UISlider control. WTF? It doesn't work that way with UIButtons or other touch events like Touch Down. I can work around it, I think, but it seems like a bug in the way the slider control handles touches. Does anybody know why it happens? BTW: the double touch event happens even when Touch Up Inside is the only connected event.

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  • How to search and locate (annotate) in MKMapView?

    - by chaitanya
    Hi, In my application I have to search five nearest locations of "medical services" using the user current location and annotate those locations on my MKMapView. Can any one tell me how to search with a particular keyword (eg. medical services, garages) by using user current locations and annotate onto the map and when the user taps on the annotations it should show the complete address of the locations which is annotated. Can anyone help me in this?

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  • The accossoryView of a UITableViewCell disappears after the visible view is changed

    - by Luca
    Hi! I'm experiencing this strange situation. I have a UITableView where, when the user selects a cell, a long (network) process begins. So, I performed this in a background thread and I placed (in the didSelectRowAtIndexPath) a UIActivityIndicatorView as the accessory view. This is what I wrote: UITableViewCell* cell = [self.tableView cellForRowAtIndexPath:indexPath]; UIActivityIndicatorView* activityView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite]; cell.accessoryView = activityView; [activityView startAnimating]; [activityView release]; everything seems to work correctly, except that, if during a loading process (when the indicator is animated), I switch the view using a UITabBar, when I go back to the UITableView, the UIActivityIndicatorView that should still be there has disappeared. Any idea of what I did wrong? Thanks!

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  • How to toggle orientation lock in android?

    - by pixel
    I want to create checkbox in my preference Activity that allows user to toggle orientation change. In similar questions people write only about complete orientation lock (by overriding onConfigurationChanged method or adding configChanges in AndroidManifest.xml) or orientation enforcing ( by setRequestedOrientation ). Is there a way to toggle orientation lock?

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  • Asynchronous Image loading in certain custom UITableViewCells

    - by Dan
    So, I'm sure that this issue has been brought up before, but I haven't quite seen a solution for my specific problem. What I'm doing is loading a group of custom UITableViewCell's that are drawn using Loren Brichter's solution, each cell has some content, an icon (representing the user) that is asynchronously loaded into it, and a few other things. Eventually, I'm hoping to add support for images. Not every cell has an image, so in the creation of the cell, it determines if an image is required to be loaded and drawn into the cell. My problem is that I don't know how I can do that while keeping the image loaded asynchronously - with not every cell having the need to load an image (like needed with the icon) I'm not sure how to keep it in order when an cell is thrown off screen and re-rendered when the user scrolls over it. Each cell draws it content from an NSArray containing a custom object called FeedItem. All I'm really looking for is some sort of solution or idea to help me because right now I am at a loss. Thanks guys, I will appreciate the help.

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  • UIKeyboard turn Caps Lock on

    - by Daniel Granger
    I need my user to input some data like DF-DJSL so I put this in the code: theTextField.autocapitalizationType = UITextAutocapitalizationTypeAllCharacters; But unfortunately what happens is the first to letter type in CAPS but then letter immediately after typing the hyphen will be in lower case and then the rest return to CAPS therefore producing output like this (unless the user manually taps the shift button after typing a hyphen): DF-dJSL How can I fix this? Many Thanks

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  • Spinner cannot load an integer array?

    - by Adam
    I have an application, which has a Spinner that I want populated with some numbers (4,8,12,16). I created an integer-array object in strings.xml with the items mentioned above, set the entries of the Spinner to the integer-array, and when I run the app I get: 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): java.lang.NullPointerException 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:355) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.widget.ArrayAdapter.getView(ArrayAdapter.java:323) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.widget.AbsSpinner.onMeasure(AbsSpinner.java:198) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.view.View.measure(View.java:7965) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:2989) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:888) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.widget.LinearLayout.measureVertical(LinearLayout.java:350) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.widget.LinearLayout.onMeasure(LinearLayout.java:278) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.view.View.measure(View.java:7965) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:2989) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.widget.FrameLayout.onMeasure(FrameLayout.java:245) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.view.View.measure(View.java:7965) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.widget.LinearLayout.measureVertical(LinearLayout.java:464) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.widget.LinearLayout.onMeasure(LinearLayout.java:278) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.view.View.measure(View.java:7965) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:2989) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.widget.FrameLayout.onMeasure(FrameLayout.java:245) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.view.View.measure(View.java:7965) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.view.ViewRoot.performTraversals(ViewRoot.java:763) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.view.ViewRoot.handleMessage(ViewRoot.java:1632) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.os.Handler.dispatchMessage(Handler.java:99) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.os.Looper.loop(Looper.java:123) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.app.ActivityThread.main(ActivityThread.java:4310) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at java.lang.reflect.Method.invokeNative(Native Method) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at java.lang.reflect.Method.invoke(Method.java:521) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at dalvik.system.NativeStart.main(Native Method) As soon as I changed the array to a string-array, this works fine. Is this normal? I realize that I can (and will) just convert the string array values to an int, but it seems weird that I have to. Thanks!

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  • iPhone: NSAlert Delegate Method Never Called

    - by Marco
    Hello, I have implemented an NSAlert but the delegate method didDissmissWithButton is never called. This code evokes the NSAlert: NSString *title = [NSString stringWithFormat:@"Keine Internetverbindung"]; NSString *alertMessage = [NSString stringWithFormat:@"Es konnte keine Verbindung zu www.sip.de aufgebaut werden!"]; NSString *ok = [NSString stringWithFormat:@"Ok"]; UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title message:alertMessage delegate:self cancelButtonTitle:ok otherButtonTitles:nil]; [alert show]; [alert release]; and this is the NSAlert delegate method: - (void)alertView:(UIAlertView *)alertView didDisMissWithButtonIndex:(NSInteger)buttonIndex{ exit(3); } The method is never called, what is my mistake?

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  • What is a good way to animate UIViews inside UITableViewCell after a callback?

    - by erotsppa
    We couldn't find a way to animate UIViews inside a UITableCell as an action from a callback. Suppose in a scenario where you click on a button on the UITableViewCell and it fires off an asynchronous action to download a picture. Suppose further that when the picture is downloaded we want a UIView in the cell to animate the picture to give user a visual feedback that something new is about to be presented. We couldn't find a way to track down the UIVIew to invoke beginAnimation on because the original cell that the user clicked on might now be used for another row due to the nature of cells being reused when you scroll up and down in the table. In other words we can't keep a pointer to that UITableViewCell. We need to find another way to target the cell and animate it if that row is visible and don't animate if the row is scrolled out of range.

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  • ABAddressBookGetPersonCount(ab) problem

    - by prathumca
    Why the call to ABAddressBookGetPersonCount(ab); is giving the problem? I have around 2000 contacts in my address book. When my app gets started I'm trying to read the entire address book. This works perfectly on simulator but causing crash on IPhone. The crash report is pointing to 9 AppSupport 0x31fbca1e 0x31fb6000 + 27166 // CPRecordStoreGetCountOfInstancesOfClassWhere + 0x7e 10 AddressBook 0x318df668 0x318d5000 + 42600 // ABCGetPersonCountInStore + 0x88 11 AddressBook 0x318ea450 0x318d5000 + 87120 // ABAddressBookGetPersonCount + 0x8 12 MyAddressBook 0x0000ad30 0x1000 + 40240 // -[MyAddressBookController readAB] + 0x2c0 13 MyAddressBook 0x0000a8ce 0x1000 + 39118 // -[MyAddressBookController start] + 0x4a What I'm doing in "readAB"? - (void) readAB { ABAddressBookRef ab = ABAddressBookCreate(); CFArrayRef contacts = ABAddressBookCopyArrayOfAllPeople(ab); CFIndex count = ABAddressBookGetPersonCount(ab); for(int i = 0; i < count; i++) { //doing some thing... } } If you observe the above crash report, it is clearly pointing to CFIndex count = ABAddressBookGetPersonCount(ab);. Whats wrong with this code? I'm sure that this code works perfectly on firmware 3.1.2. But now I upgraded firmware to 3.1.3. Is this upgrade is causing any trouble? Regards, prathumca.

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  • iPhone - facebook connect on iPhone to get contents of an application's wall?

    - by lostInTransit
    Hi I would like to get the contents of my FB app's wall into my iPhone app. The contents on the wall are directly posted there by me and not obtained from any database. Can someone please point me to the documentation where I can get the information for accessing these messages/their comments from my iPhone app? I searched on the Facebook wiki, but it takes me to the github page for FB-Connect on iPhone, nothing where I can see all the API calls possible. Thanks.

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  • Resize a UITableView to accomodate a translucent header before it becomes visible

    - by scotru
    I have a UITableView inside a UINavigationController. The navigation controller uses a translucent navigation bar--as a result, my table view is displayed behind the navigation bar and it's height includes the height of the navigation bar. However, I want the table view to appear below the navigation bar (as it would if it were not translucent). I'm working in MonoTouch, but I think the principles are language independent. Here's the code I'm using to resize the UITableView frame: RectangleF rect = tableView.Frame; tableView.Frame = new RectangleF (rect.Left, rect.Top + 44, rect.Width, rect.Height - 44); tableView.ContentInset = new UIEdgeInsets (0, 0, 0, 0); This works fine if I place it in the viewDidAppear method, but will not work in the viewWillAppear method. In the viewDidAppear method, however I can see the resize occurring briefly in the form of a flicker. I want to do the resize before the frame appears. But if I put this code in viewWillAppear or viewDidLoad, it has no effect. Thanks in advance for any help!

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  • How does overlayViewTouched notification work in the MoviePlayer sample code

    - by Jonathan
    Hi, I have a question regarding the MoviePlayer sample code provided by apple. I don't understand how the overlayViewTouch notification works. The NSlog message I added to it does not get sent when I touch the view (not button). // post the "overlayViewTouch" notification and will send // the overlayViewTouches: message - (void)overlayViewTouches:(NSNotification *)notification { NSLog(@"overlay view touched"); // Handle touches to the overlay view (MyOverlayView) here... } I can, however, get the NSlog notification if I place it in -(void)touchesBegan in "MyOverlayView.m". Which makes me think it is recognizing touches but not sending a notification. // Handle any touches to the overlay view - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { UITouch* touch = [touches anyObject]; if (touch.phase == UITouchPhaseBegan) { NSLog(@"overlay touched(from touchesBegan") // IMPORTANT: // Touches to the overlay view are being handled using // two different techniques as described here: // // 1. Touches to the overlay view (not in the button) // // On touches to the view we will post a notification // "overlayViewTouch". MyMovieViewController is registered // as an observer for this notification, and the // overlayViewTouches: method in MyMovieViewController // will be called. // // 2. Touches to the button // // Touches to the button in this same view will // trigger the MyMovieViewController overlayViewButtonPress: // action method instead. NSNotificationCenter *nc = [NSNotificationCenter defaultCenter]; [nc postNotificationName:OverlayViewTouchNotification object:nil]; } } Can anyone shed light on what I am missing or doing wrong? Thank you.

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  • EXC_BAD_ACCESS signal received

    - by Hector Ramos
    When deploying the application to the device, the program will quit after a few cycles with the following error: Program received signal: "EXC_BAD_ACCESS". The program runs without any issue on the iPhone simulator, it will also debug and run as long as I step through the instructions one at a time. As soon as I let it run again, I will hit the EXC_BAD_ACCESS signal. In this particular case, it happened to be an error in the accelerometer code. It would not execute within the simulator, which is why it did not throw any errors. However, it would execute once deployed to the device. Most of the answers to this question deal with the general EXC_BAD_ACCESS error, so I will leave this open as a catch-all for the dreaded Bad Access error. EXC_BAD_ACCESS is typically thrown as the result of an illegal memory access. You can find more information in the answers below. Have you encountered the EXC_BAD_ACCESS signal before, and how did you deal with it?

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  • Convert UIViews made programmatically to UIScrollViews

    - by Scott
    So I have a bunch of UIViews that I made programmatically and placed a bunch of content on (UIButtons, UILabels, UINavigationBars, etc.), and most of these views are going to need to actually be UIScrollViews instead. Now keep in mind I made all these through code not the Interface Builder. What I first tried was to just change each declaration of a UIView to a UIScrollView instead, and that compiled and ran fine, however, they were not scrollable. It's REALLY weird. Here is the code that I change into UIScrollViews, although it doesn't scroll: - (void)loadView { //allocate the view self.view = [[UIScrollView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]]; //self.view = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]]; //set the view's background color self.view.backgroundColor = [[UIColor alloc] initWithPatternImage:[UIImage imageNamed:@"MainBG.jpg"]]; [self.view addSubview:[SiteOneController myNavBar1:@"Sites"]]; NSMutableArray *sites = [[NSMutableArray alloc] init]; NSString *one = @"Constution Center"; NSString *two = @"Franklin Court"; NSString *three = @"Presidents House"; [sites addObject: one]; [one release]; [sites addObject: two]; [two release]; [sites addObject: three]; [three release]; NSString *element; int j = 0; for (element in sites) { UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom]; UIFont *myBoldFont = [UIFont boldSystemFontOfSize:20.0]; UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(20, b + (j*45), c, d)]; [label setBackgroundColor:[UIColor clearColor]]; label.text = element; label.font = myBoldFont; UIImage *img = [UIImage imageNamed:@"ButtonBase.png"]; [button setImage:img forState:UIControlStateNormal]; //setframe (where on screen) //separation is 15px past the width (45-30) button.frame = CGRectMake(a, b + (j*45), c, d); // [button setTitle:element forState:UIControlStateNormal]; button.backgroundColor = [SiteOneController myColor1]; [button addTarget:self action:@selector(showCCView:) forControlEvents:UIControlEventTouchUpInside]; [button setTag:j]; [self.view addSubview: button]; [self.view addSubview:label]; j++; } } What am I doing wrong?

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  • Problems removing a " from a string

    - by Graeme
    Hi, I have a string that ends with a " (quotation mark) that I want to get rid of. However, because XCode usually requires you to enter the text you wish to remove using stringByReplacingOccurrencesOfString in @"texttoremove" format, you can't use the quotation marks in the space as it thinks you are closing the text. Any ideas on how I can do it? Thanks.

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  • Array of ImageView

    - by Viral
    hi, I m making a Shooting game, in that I want an array of ImageViews , so that for each new level the bullets can be Disappear and the view will be shown from the initial level. SO if Any one know how to store imageviews in an array kindly tell me... regards viral..

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