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  • iPhone UISearchBar animated to top

    - by hurley scott
    There are lots of apps where the searchbar moves upwards if active and moves down when it is inactive. There is a sample code from apple available which works with IB, but how can I achieve this behavior programmatically? Mostly it is combined with a navigationbar which moves out of the screen in replace with the searchbar

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  • iPhone mapkit: selecting a location on the map

    - by Tristan
    Hi there, I'd like to be able to select a location on a MKMapView. Ideally the user would be able to place their finger on a pin, drag it around the map, and then let go above there area they wish to place it. I'm stumped. Does anyone have any clever ideas how this could be achieved?

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  • Using a REST API and iPhone/Objective-C

    - by Neil Desai
    So I'm brand new to Netflix's API and have never used an API ever before. I'm ok with Objective-C and Cocoa Touch but just have no clue where to start when accessing the API and how to in general. Can someone help me get started with some code that will access titles in Netflix or just how to access a REST API in general with authentication. Thanks. Update: I've looked at the documents and I'm still a little lost because the Netflix API is a little weird with OAuth. Any help?

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  • iPhone:Upload photo to flickr

    - by Rupesh
    hi all, I am developing a application where i want to load the photo on flickr. i don't want to use the toolkit. I want to use flickr API.I read the API documentation of flickr but there are no API to upload photo on particular account. All API related to Garden not to user account. i simply want to user will supply username and password , then I pass the username,password and photo content to API (or web service). Please suggest

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  • Get text of button from IBAction - iPhone

    - by Organiccat
    When an IBAction is called: -(IBAction) onClick1: (id) sender; What is passed in the sender? Since it's hooked up through the IB, I'm not really sure. My question is how to get the text of the button to be the passed object (NSString most likely) so that I could call it inside the action implementation. -(IBAction) onClick1: (id) sender { NSLog(@"User clicked %@", sender); // Do something here with the variable 'sender' }

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  • programmatically change device orientation in iphone

    - by iPhoneDev
    I have navigation based app, when I click on any row in root view, the next view should come in Landscape mode. I am not able to find a proper way to implement this. What I tried is: - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return UIInterfaceOrientationIsLandscape(interfaceOrientation); } But this is not working. The view should open only in Landscape mode (not when user rotate it). Can any one help me. Thanks

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  • iPhone OS: Fetching a random entity instance using NSPredicate Nsfetchrequest and core data

    - by nickthedude
    Working on an app where I have a large collections of managed objects against which I want to fetch a few random instances. My question is, is there any way I can use NSPredicate and NSFetchRequest to return several objects at random. I saw that you could actually add a NSFetchRequest into the entity using the data modeler, any way to do the random fetch using this? Also what would be the best method for determining the "count" of a table so I can set the bounds of the random number generator. let me know if you need more details. Thanks! Nick

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  • iPhone metering problems

    - by Eric Christensen
    When I'm recording an AVAudioRecorder object, I repeat a chunk of code via an NSTimer that includes: [soundrecording updateMeters]; NSLog(@"channel 0 average:%f, peak:%f",[soundrecording averagePowerForChannel:0],[soundrecording peakPowerForChannel:0]); NSLog(@"channel 1 average:%f, peak:%f",[soundrecording averagePowerForChannel:1],[soundrecording peakPowerForChannel:1]); When I'm recording a mono file, the peak power for channel 0 is just what you'd expect, a float from -160 to 0. But average power for channel 0 is always zero. (And, of course, the values for channel 1 are both zero.) When I'm recording a stereo file, both the average and peak values for both channels are as expected. Any thoughts on why, when recording a mono file, the average value for channel 0 isn't returning correctly, even though the peak is? Thanks!

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  • Help: Instance Variables & Properties [iPhone]

    - by Devoted
    In something like this: @interface Control_FunViewController : UIViewController { UITextField *nameField; UITextField *numberField; } @property (nonatomic, retain) IBOutlet UITextField *nameField; @property (nonatomic, retain) IBOutlet UITextField *numberField; I understand that "UITextField *nameField;" is an instance variable and "@property ..." is a property. But what do these individual things do? I guess what I'm really asking is how the property is used for example in the implementation file (.m)

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  • iphone - memory leaks in separate thread

    - by Brodie4598
    I create a second thread to call a method that downloads several images using: [NSThread detachNewThreadSelector:@selector(downloadImages) toTarget:self withObject:nil]; It works fine but I get a long list of leaks in the log similar to: 2010-04-18 00:48:12.287 FS Companion[11074:650f] * _NSAutoreleaseNoPool(): Object 0xbec2640 of class NSCFString autoreleased with no pool in place - just leaking Stack: (0xa58af 0xdb452 0x5e973 0x5e770 0x11d029 0x517fa 0x51708 0x85f2 0x3047d 0x30004 0x99481fbd 0x99481e42) 2010-04-18 00:48:12.288 FS Companion[11074:650f] * _NSAutoreleaseNoPool(): Object 0xbe01510 of class NSCFString autoreleased with no pool in place - just leaking Stack: (0xa58af 0xdb452 0x5e7a6 0x11d029 0x517fa 0x51708 0x85f2 0x3047d 0x30004 0x99481fbd 0x99481e42) 2010-04-18 00:48:12.289 FS Companion[11074:650f] * _NSAutoreleaseNoPool(): Object 0xbde6720 of class NSCFString autoreleased with no pool in place - just leaking Stack: (0xa58af 0xdb452 0x5ea73 0x5e7c2 0x11d029 0x517fa 0x51708 0x85f2 0x3047d 0x30004 0x99481fbd 0x99481e42) Can someone help me understand the problem?

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  • Objective-C assigning variables question for iphone.

    - by coder net
    The following piece of code can be written in two ways. I would like to know what are the pros and cons of each. If possible I would like to stick with the one liner. 1) UIColor *background = [[UIColor alloc] initWithPatternImage:[UIImage imageNamed:@"Background.png"]]; self.view.backgroundColor = background; [background release]; 2) self.view.backgroundColor = [[UIColor alloc] initWithPatternImage:[UIImage imageNamed:@"Background.png"]]; Any issues with releasing memory etc. with #2? I'm new to Objective-C and would like to follow the best approach.

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  • iPhone POST to PHP failing

    - by Alexander
    I have this code here: NSString *post = [NSString stringWithFormat:@"deviceIdentifier=%@&deviceToken=%@",deviceIdentifier,deviceToken]; NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:NO]; NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]]; NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease]; [request setURL:[NSURL URLWithString:@"http://website.com/RegisterScript.php"]]; [request setHTTPMethod:@"POST"]; [request setValue:postLength forHTTPHeaderField:@"Content-Length"]; [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"]; [request setValue:@"MyApp-V1.0" forHTTPHeaderField:@"User-Agent"]; [request setHTTPBody:postData]; NSData *urlData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil]; NSString *response = [[NSString alloc] initWithData:urlData encoding:NSASCIIStringEncoding]; which should be sending data to my PHP server to register the device into our database, but for some of my users no POST data is being sent. I've been told that this line: NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:NO]; may be causing the problem. Any thoughts on why this script would sometimes not send the POST data? On the server I got the packet trace for a failed send and the Content-lenght came up as 0 so no data was sent at all. Thanks for any help

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  • Iphone UITextField only integer

    - by Raphael Pinto
    I have a UITextField in my IB and I want to check out if the user entered only numbers (no char)and get the integer value. I get the integer value of the UITextField like that : int integer = [myUITexrtField.text intValue]; When I put a character ( , ; . ) it return me 0 and I don't know how to detect that it is not only numbers. How can I do?

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  • Objective C iPhone save text

    - by David Maitland
    How is it possible to save text from a text field when the user quit's the app then when the user re opens the app the text appears back in the same text box, can this be done with out a save button? What code is needed for the text to be saved and what action is needed for doing this when the app is opened? Thanks, David

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  • iPhone: Howto get notified when an UIView becomes visible

    - by arne_
    Is there a way to get a notification, a callback or some other means to call a method whenever a UIView becomes visible for the user, i.e. when a UIScrollview is the superview of some UIViews, and the ViewController of such a UIView shall get notified when its view is now visible to the user? I am aware of the possible, but not so elegant solution of checking to which position the ScrollView scrolled (via UIScrollViewDelegate-methods) and compute if either one of the subviews is visible... But I'm looking for a more universal way of doing this.

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  • Prerequisites for Account management via an IPhone App?

    - by Icky
    Hello. I have been reading a couple of threads for this topic on this site. I want to create an App, which communicates with a server and has the following features: the User can create/manage an account on the server the App communicates with the server via a secure connection the User is updated about important news through messages From what I understood so far, I need to take care of the following: establish a secure connection with the server send account information(user data, password) to the server and authenticate the client side management and encryption of account data/information is handled by the server, so the App only sends data, the server stores/encrypts (no need for me to take care of anything) So far, I think, I have covered the most important features. I have read, that NSURLConnection can be used, to send the authentication data. But how is further communication ensured? And how is the encryption managed? Are there any useful tutorials on this, because this is the first time I delve into this topic, and any guidance is greatly appreciated! Also, if I have missed anything important (e.g. with managing accounts) please tell me.

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  • How can i get a list of currently running threads in objective-C(iphone)

    - by krasnyk
    Is there a way to get the list of currently running threads in objective-C? I'm mostly interested in getting the NSThreads objects, cause i want to replace the assertion handler for each running thread? If such thing is not possible, maybe i could set my own selector to be invoked after any thread is spawn(so that i could do the assertion handler replacement over there)?

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  • CLLocationManager ensure best accuracy for iphone

    - by Zap
    Does anyone have any suggestions on how to obtain the best horizontal accuracy on the location manager? I have set the desired accuracy to NearestTenMeters, but given that the accuracy can always change depending on coverage area, how can I write some code in the locationManager to stop updating only after I get the best horizontal accuracy?

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  • Datetime picker in iphone

    - by sudhakarilla
    I have one issue with Datetime Picker In my firstview i have button.If i click that button it should open DateTime Picker in the second view. After selecting the datetime it should show datetime in the firstview text field. Please help in this issue.

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  • datetime picker in iphone

    - by sudhakarilla
    I have one issue with Datetime Picker In my view i have button.If i click that button it should open DateTime Picker. After selecting the datetime it should show datetime in the text field and disable of the Datetime picker Please help in this issue.

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  • iPhone FBConnect, dashboard.addnews

    - by Dmitry
    Hi, The question is: how to add news via FBConnect?? I have the following code: NSString *newsBody = @"[{\"message\": \"News message\" }]"; NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObject:newsBody forKey:@"news"]; [[FBRequest requestWithDelegate:self] call:@"facebook.dashboard.addnews" params:params dataParam:nil]; After I sent the request I received the success responce. But I can't see the new news in the facebook account!! Also, I tried to add full info into news parameter (http://wiki.developers.facebook.com/index.php/Dashboard.addNews):: NSString *newsBody = @"[{\"message\": \"News message\",\"action_link\": {\"text\": \"link text\", \"href\": \"http: //google.com\"} }]"; But this request returns error :( Thanks in advance!

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  • Calculating string sizes on iPhone on a background thread

    - by jbrennan
    I've got some somewhat hefty string size calculations happening in my app (each one takes close to 500ms, and happens when the user scrolls to a new "page" in my app (like the Weather app). The delay only happens once per page, as the calculation only needs to be run once (and can even be cached for subsequent launches with the same data). Anyway, I still like to not block the UI for this type of work, as to me it screams using threads, but I know UIKit is not meant to be used from other threads. (I know NSString is not part of UIKit, but the string sizing methods are part of the UIKitAdditions...) So how should I go about doing this? What's the best way to not block the UI and do so safely?

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