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2014/10/15 ¤U¤È 10:10:14
iphone Programming Glossary: inHow to check for an active Internet Connection on iPhone SDK? http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk on iPhone SDK I would like to check to see if I have an Internet connection on the iPhone using the Cocoa Touch libraries. I came up with a way to do this using an NSURL . The way I did it seems.. connection on the iPhone using the Cocoa Touch libraries. I came up with a way to do this using an NSURL . The way I did it seems a bit unreliable because even Google could one day be down and relying.. NSURL . The way I did it seems a bit unreliable because even Google could one day be down and relying on a 3rd party seems bad and while I could check to see for a response from some other websites if..
How to develop or migrate apps for iPhone 5 screen resolution? http://stackoverflow.com/questions/12395200/how-to-develop-or-migrate-apps-for-iphone-5-screen-resolution a new resolution 640 x 1136 pixels . What is required to develop new or transition already existing applications to the new screen size What should we keep in mind to make applications universal for.. develop new or transition already existing applications to the new screen size What should we keep in mind to make applications universal for both the older displays and the new widescreen aspect ratio.. new or transition already existing applications to the new screen size What should we keep in mind to make applications universal for both the older displays and the new widescreen aspect ratio iphone..
Symbolicating iPhone App Crash Reports http://stackoverflow.com/questions/1460892/symbolicating-iphone-app-crash-reports iPhone App Crash Reports I'm looking to try and symbolicate my iPhone app's crash reports. I retrieved.. iPhone App Crash Reports I'm looking to try and symbolicate my iPhone app's crash reports. I retrieved the crash reports from iTunes Connect... app's crash reports. I retrieved the crash reports from iTunes Connect. I have the application binary that I submitted to the App Store and I have the dSYM file that was generated as part of the build...
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c do I create delegates in Objective C I know how delegates work and I know how I can use them. But how do I create them iphone.. an object that has been assigned as a delegate of another. There's no special process for creating them you simply define a class that implements the delegate methods you're interested in. Though with.. been assigned as a delegate of another. There's no special process for creating them you simply define a class that implements the delegate methods you're interested in. Though with delegates that use a..
How to check for an active Internet Connection on iPhone SDK? http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk to check for an active Internet Connection on iPhone SDK I would like to check to see if I have an Internet connection on the.. check for an active Internet Connection on iPhone SDK I would like to check to see if I have an Internet connection on the iPhone using the Cocoa Touch libraries. I came up with a way to do this using.. respond it does seem wasteful and an unnecessary overhead on my application. BOOL connectedToInternet NSString URLString NSString stringWithContentsOfURL NSURL URLWithString @ http www.google.com..
Add UIPickerView & a Button in Action sheet - How? http://stackoverflow.com/questions/1262574/add-uipickerview-a-button-in-action-sheet-how Give the navigation controller for SimpleTableViewController a Storyboard ID of SimpleTableVC . In SimpleTableViewController.h create an NSArray property that will represent the data in the table. Also.. . This is how we will pass the selection back to the parent controller. In SimpleTableViewController.m implement the tableview data source and delegate methods calling itemSelectedatRow.. tableview data source and delegate methods calling itemSelectedatRow in tableView didSelectRowAtIndexPath . This approach has the added benefit of being fairly reusable. To use import the SimpleTableViewController..
Symbolicating iPhone App Crash Reports http://stackoverflow.com/questions/1460892/symbolicating-iphone-app-crash-reports rename the extention .ipa with .zip extract it then we can get a Payload Folder which contain app. In this case we don't need .dSYM file. Note This can only work if the app binary does not have symbols..
How do I detect when someone shakes an iPhone? http://stackoverflow.com/questions/150446/how-do-i-detect-when-someone-shakes-an-iphone to detect this iphone ios accelerometer shake motion detection share improve this question In 3.0 there's now an easier way hook into the new motion events. The main trick is that you need to have.. then selecting this new type instead of the base type in IB or using it when allocating a view . In the view controller you want to set this view to become first responder void viewWillAppear BOOL animated..
Detecting which UIButton was pressed in a UITableView http://stackoverflow.com/questions/1802707/detecting-which-uibutton-was-pressed-in-a-uitableview a UIButton which is set up as follows UITableViewCell tableView UITableView tableView cellForRowAtIndexPath NSIndexPath indexPath NSString identifier @ identifier UITableViewCell cell tableView dequeueReusableCellWithIdentifier.. which is set up as follows UITableViewCell tableView UITableView tableView cellForRowAtIndexPath NSIndexPath indexPath NSString identifier @ identifier UITableViewCell cell tableView dequeueReusableCellWithIdentifier.. button addTarget self action @selector buttonPressedAction forControlEvents UIControlEventTouchUpInside button setTag 1 cell.contentView addSubview button button release UIButton button UIButton cell..
The simplest way to resize an UIImage? http://stackoverflow.com/questions/2658738/the-simplest-way-to-resize-an-uiimage simplest way to resize an UIImage In my iPhone app I take a picture with the camera then I want to resize it to 290 390 pixels. I was using.. imageWithImage UIImage image scaledToSize CGSize newSize UIGraphicsBeginImageContext newSize In next line pass 0.0 to use the current device's pixel scaling factor and thus account for Retina resolution.. 1.0 to force exact pixel size. UIGraphicsBeginImageContextWithOptions newSize NO 0.0 image drawInRect CGRectMake 0 0 newSize.width newSize.height UIImage newImage UIGraphicsGetImageFromCurrentImageContext..
How do I associate file types with an iPhone application? http://stackoverflow.com/questions/2774343/how-do-i-associate-file-types-with-an-iphone-application types with an iPhone application On the subject of associating your iPhone app with file types. In this informative question I learned that apps could be associated with custom URL protocols. That was.. application. To register support you will need to have something like the following in your Info.plist key CFBundleDocumentTypes key array dict key CFBundleTypeIconFiles key array string Document.. applications on the system can be made aware of it. To do this you would add a section to your Info.plist like the following key UTExportedTypeDeclarations key array dict key UTTypeConformsTo key array..
Prefixing property names with an underscore in Objective C [duplicate] http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c Java in college days. So when I define a property in Objective C this is what I naturally do. In the header @interface Whatever NSString myStringProperty @property nonatomic copy NSString myStringProperty.. @interface Whatever NSString myStringProperty @property nonatomic copy NSString myStringProperty In the implementation @synthesize myStringProperty But in almost every example it is done like In the header.. In the implementation @synthesize myStringProperty But in almost every example it is done like In the header @interface Whatever NSString _myStringProperty @property nonatomic copy NSString myStringProperty..
Can I embed a custom font in an iPhone application? http://stackoverflow.com/questions/360751/can-i-embed-a-custom-font-in-an-iphone-application read the documentation on X or Y. I've experimented extensively with all of these and got nowhere. In one case X turned out to be relevant only on OS X not on iPhone. Consequently I am setting a bounty.. bonus. EDIT it appears that the bounty auto awards to the answer with the highest number of votes. Interesting. No one actually provided an answer that solved the question as asked the solution that involves..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints are pretty heavy on memory too. Even monitor the memory usage of apple's zoomable PDF example. In my current project I'm developing a PDF viewer and am rendering a UIImage of a page in a separate thread.. a CGPDFPageRef Use NSOperations or GCD Blocks to prepare pages ahead of time. call CGContextSetInterpolationQuality ctx kCGInterpolationHigh CGContextSetRenderingIntent ctx kCGRenderingIntentDefault.. or GCD Blocks to prepare pages ahead of time. call CGContextSetInterpolationQuality ctx kCGInterpolationHigh CGContextSetRenderingIntent ctx kCGRenderingIntentDefault before CGContextDrawPDFPage..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now As was pointed out by others the preferred solution since iOS 6 is UIDevice identifierForVendor . In most cases you should be able use it as a drop in replacement to the old UIDevice uniqueIdentifier but.. this isn't necessary any more except if you need a stable device identifier on iOS 6.0. Edit 4 In iOS 7 Apple now always returns a fixed value when querying the MAC to specifically thwart the MAC as..
How can I upload a photo to a server with the iPhone? http://stackoverflow.com/questions/125306/how-can-i-upload-a-photo-to-a-server-with-the-iphone #import zlib.h static NSString const BOUNDRY @ 0xKhTmLbOuNdArY static NSString const FORM_FLE_INPUT @ uploaded #define ASSERT x NSAssert x @ @interface EPUploader Private void upload NSURLRequest postRequestWithURL.. thread. Results An instance of Uploader. Side effects None id initWithURL NSURL aServerURL IN filePath NSString aFilePath IN delegate id aDelegate IN doneSelector SEL aDoneSelector IN errorSelector.. of Uploader. Side effects None id initWithURL NSURL aServerURL IN filePath NSString aFilePath IN delegate id aDelegate IN doneSelector SEL aDoneSelector IN errorSelector SEL anErrorSelector IN if self..
How can I launch the Google Maps iPhone application from within my own native application? http://stackoverflow.com/questions/30058/how-can-i-launch-the-google-maps-iphone-application-from-within-my-own-native-ap tapping an address in Contacts launches the map NOTE THIS ONLY WORKS ON THE DEVICE ITSELF. NOT IN THE SIMULATOR. iphone objective c google maps share improve this question For iOS 5.1.1 and lower..
iOS: How to store username/password within an app? http://stackoverflow.com/questions/6972092/ios-how-to-store-username-password-within-an-app to disable the username password savement. So the NSUserDefaults will be cleared then. But IN my app I need this username password for database querys for the user. So Where to store data except..
Applications are expected to have a root view controller at the end of application launch http://stackoverflow.com/questions/7520971/applications-are-expected-to-have-a-root-view-controller-at-the-end-of-applicati self.window.rootViewController self.tabBarController self.window makeKeyAndVisible return YES IN IB the tabBarController's delegate is hooked up to the App Delegate. Any know how to fix this issue..
How to check for an active Internet Connection on iPhone SDK? http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk to check for an active Internet Connection on iPhone SDK I would like to check to see if I have an Internet connection on the iPhone using the Cocoa Touch libraries. I came up with a way to do this using an NSURL . The way I did it seems a bit unreliable because even Google could one day be down and.. on iPhone SDK I would like to check to see if I have an Internet connection on the iPhone using the Cocoa Touch libraries. I came up with a way to do this using an NSURL . The way I did it seems a bit unreliable because even Google could one day be down and relying on a 3rd party seems bad and while I could check to see.. Touch libraries. I came up with a way to do this using an NSURL . The way I did it seems a bit unreliable because even Google could one day be down and relying on a 3rd party seems bad and while I could check to see for a response from some other websites if Google didn't respond it does seem wasteful and an unnecessary..
How to develop or migrate apps for iPhone 5 screen resolution? http://stackoverflow.com/questions/12395200/how-to-develop-or-migrate-apps-for-iphone-5-screen-resolution The new iPhone 5 display has a new aspect ratio and a new resolution 640 x 1136 pixels . What is required to develop new or transition already existing applications to the new screen size What should we keep in mind to make applications universal for both the older displays and the new widescreen aspect ratio.. a new resolution 640 x 1136 pixels . What is required to develop new or transition already existing applications to the new screen size What should we keep in mind to make applications universal for both the older displays and the new widescreen aspect ratio iphone ios screen resolution iphone 5 share improve this.. new resolution 640 x 1136 pixels . What is required to develop new or transition already existing applications to the new screen size What should we keep in mind to make applications universal for both the older displays and the new widescreen aspect ratio iphone ios screen resolution iphone 5 share improve this question..
Symbolicating iPhone App Crash Reports http://stackoverflow.com/questions/1460892/symbolicating-iphone-app-crash-reports iPhone App Crash Reports I'm looking to try and symbolicate my iPhone app's crash reports. I retrieved the crash reports from iTunes Connect. I have the application.. iPhone App Crash Reports I'm looking to try and symbolicate my iPhone app's crash reports. I retrieved the crash reports from iTunes Connect. I have the application binary that I submitted to the.. Crash Reports I'm looking to try and symbolicate my iPhone app's crash reports. I retrieved the crash reports from iTunes Connect. I have the application binary that I submitted to the App Store and I have the dSYM file that was generated as part of the build. I have all of these files together inside a single directory..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c do I create delegates in Objective C I know how delegates work and I know how I can use them. But how do I create them iphone ios objective c cocoa delegates share improve this question.. share improve this question An Objective C delegate is just an object that has been assigned as a delegate of another. There's no special process for creating them you simply define a class that implements the delegate methods you're interested in. Though with delegates that use a formal protocol you must declare your.. An Objective C delegate is just an object that has been assigned as a delegate of another. There's no special process for creating them you simply define a class that implements the delegate methods you're interested in. Though with delegates that use a formal protocol you must declare your delegate to implement..
How to check for an active Internet Connection on iPhone SDK? http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk to check for an active Internet Connection on iPhone SDK I would like to check to see if I have an Internet connection on the iPhone using the Cocoa Touch libraries. I came up with a way.. to check for an active Internet Connection on iPhone SDK I would like to check to see if I have an Internet connection on the iPhone using the Cocoa Touch libraries. I came up with a way to do this using an NSURL . The way I did it seems a bit unreliable because.. to see for a response from some other websites if Google didn't respond it does seem wasteful and an unnecessary overhead on my application. BOOL connectedToInternet NSString URLString NSString stringWithContentsOfURL NSURL URLWithString @ http www.google.com return URLString NULL YES NO Is what I have done bad Not to..
Add UIPickerView & a Button in Action sheet - How? http://stackoverflow.com/questions/1262574/add-uipickerview-a-button-in-action-sheet-how and set its custom class to SimpleTableViewController. Give the navigation controller for SimpleTableViewController a Storyboard ID of SimpleTableVC . In SimpleTableViewController.h create an NSArray property that will represent the data in the table. Also in SimpleTableViewController.h create a protocol SimpleTableViewControllerDelegate.. and a weak property called delegate of type id SimpleTableViewControllerDelegate . This is how we will pass the selection back to the parent controller. In SimpleTableViewController.m implement the tableview data source and delegate methods calling itemSelectedatRow in tableView didSelectRowAtIndexPath . This approach.. controller. In SimpleTableViewController.m implement the tableview data source and delegate methods calling itemSelectedatRow in tableView didSelectRowAtIndexPath . This approach has the added benefit of being fairly reusable. To use import the SimpleTableViewController class in your ViewController.h conform to the..
Symbolicating iPhone App Crash Reports http://stackoverflow.com/questions/1460892/symbolicating-iphone-app-crash-reports 510 Symbolicating IPA if we use IPA for symbolicating just rename the extention .ipa with .zip extract it then we can get a Payload Folder which contain app. In this case we don't need .dSYM file. Note This can only work if the app binary does not have symbols stripped. By default release builds stripped the symbols. We..
How do I detect when someone shakes an iPhone? http://stackoverflow.com/questions/150446/how-do-i-detect-when-someone-shakes-an-iphone vigorously about for a split second. Does anyone know how to detect this iphone ios accelerometer shake motion detection share improve this question In 3.0 there's now an easier way hook into the new motion events. The main trick is that you need to have some UIView not UIViewController that you want as firstResponder.. simply by subclassing the view with only these methods and then selecting this new type instead of the base type in IB or using it when allocating a view . In the view controller you want to set this view to become first responder void viewWillAppear BOOL animated shakeView becomeFirstResponder super viewWillAppear animated..
Detecting which UIButton was pressed in a UITableView http://stackoverflow.com/questions/1802707/detecting-which-uibutton-was-pressed-in-a-uitableview a UITableView with 5 UITableViewCells . Each cell contains a UIButton which is set up as follows UITableViewCell tableView UITableView tableView cellForRowAtIndexPath NSIndexPath indexPath NSString identifier @ identifier UITableViewCell cell tableView dequeueReusableCellWithIdentifier identifier if cell nil cell UITableView.. with 5 UITableViewCells . Each cell contains a UIButton which is set up as follows UITableViewCell tableView UITableView tableView cellForRowAtIndexPath NSIndexPath indexPath NSString identifier @ identifier UITableViewCell cell tableView dequeueReusableCellWithIdentifier identifier if cell nil cell UITableView alloc.. button UIButton alloc initWithFrame CGRectMake 10 5 40 20 button addTarget self action @selector buttonPressedAction forControlEvents UIControlEventTouchUpInside button setTag 1 cell.contentView addSubview button button release UIButton button UIButton cell viewWithTag 1 button setTitle @ Edit forState UIControlStateNormal..
The simplest way to resize an UIImage? http://stackoverflow.com/questions/2658738/the-simplest-way-to-resize-an-uiimage simplest way to resize an UIImage In my iPhone app I take a picture with the camera then I want to resize it to 290 390 pixels. I was using this method to resize the image UIImage newImage image _imageScaledToSize.. utility method if you actually need to resize an image UIImage imageWithImage UIImage image scaledToSize CGSize newSize UIGraphicsBeginImageContext newSize In next line pass 0.0 to use the current device's pixel scaling factor and thus account for Retina resolution . Pass 1.0 to force exact pixel size. UIGraphicsBeginImageContextWithOptions.. scaling factor and thus account for Retina resolution . Pass 1.0 to force exact pixel size. UIGraphicsBeginImageContextWithOptions newSize NO 0.0 image drawInRect CGRectMake 0 0 newSize.width newSize.height UIImage newImage UIGraphicsGetImageFromCurrentImageContext UIGraphicsEndImageContext return newImage Example usage..
How do I associate file types with an iPhone application? http://stackoverflow.com/questions/2774343/how-do-i-associate-file-types-with-an-iphone-application do I associate file types with an iPhone application On the subject of associating your iPhone app with file types. In this informative question I learned that apps could be associated with custom URL protocols. That was almost one year ago and since then Apple introduced 'Document.. .pdb.gz file types if received via email or in another supported application. To register support you will need to have something like the following in your Info.plist key CFBundleDocumentTypes key array dict key CFBundleTypeIconFiles key array string Document molecules 320.png string string Document molecules 64.png string.. application specific UTI will need to be exported so that other applications on the system can be made aware of it. To do this you would add a section to your Info.plist like the following key UTExportedTypeDeclarations key array dict key UTTypeConformsTo key array string public.plain text string string public.text string..
Prefixing property names with an underscore in Objective C [duplicate] http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c perhaps because its just not what was done back in my learning Java in college days. So when I define a property in Objective C this is what I naturally do. In the header @interface Whatever NSString myStringProperty @property nonatomic copy NSString myStringProperty In the implementation @synthesize myStringProperty But.. in Objective C this is what I naturally do. In the header @interface Whatever NSString myStringProperty @property nonatomic copy NSString myStringProperty In the implementation @synthesize myStringProperty But in almost every example it is done like In the header @interface Whatever NSString _myStringProperty @property.. @property nonatomic copy NSString myStringProperty In the implementation @synthesize myStringProperty But in almost every example it is done like In the header @interface Whatever NSString _myStringProperty @property nonatomic copy NSString myStringProperty In the implementation @synthesize myStringProperty..
Can I embed a custom font in an iPhone application? http://stackoverflow.com/questions/360751/can-i-embed-a-custom-font-in-an-iphone-application there have been a number of replies so far which tell me to read the documentation on X or Y. I've experimented extensively with all of these and got nowhere. In one case X turned out to be relevant only on OS X not on iPhone. Consequently I am setting a bounty for this question and I will award the bounty to the first person.. on the device. Working on the simulator too would be a bonus. EDIT it appears that the bounty auto awards to the answer with the highest number of votes. Interesting. No one actually provided an answer that solved the question as asked the solution that involves coding your own UILabel subclass doesn't support word..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints ahead of time rendered off screen . Generally PDF viewers are pretty heavy on memory too. Even monitor the memory usage of apple's zoomable PDF example. In my current project I'm developing a PDF viewer and am rendering a UIImage of a page in a separate thread issues here too and presenting it while the scale is x1... approach is this one Note that images will render faster than a CGPDFPageRef Use NSOperations or GCD Blocks to prepare pages ahead of time. call CGContextSetInterpolationQuality ctx kCGInterpolationHigh CGContextSetRenderingIntent ctx kCGRenderingIntentDefault before CGContextDrawPDFPage to reduce memory usage while drawing.. that images will render faster than a CGPDFPageRef Use NSOperations or GCD Blocks to prepare pages ahead of time. call CGContextSetInterpolationQuality ctx kCGInterpolationHigh CGContextSetRenderingIntent ctx kCGRenderingIntentDefault before CGContextDrawPDFPage to reduce memory usage while drawing init'ing your NSOperations..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now present even if the interface has no IP is down. Edit 2 As was pointed out by others the preferred solution since iOS 6 is UIDevice identifierForVendor . In most cases you should be able use it as a drop in replacement to the old UIDevice uniqueIdentifier but a UUID that is created when the app starts for the first.. if the hashing is done in the same way . Anyways nowadays 2013 this isn't necessary any more except if you need a stable device identifier on iOS 6.0. Edit 4 In iOS 7 Apple now always returns a fixed value when querying the MAC to specifically thwart the MAC as base for an ID scheme. So you now really should use UIDevice..
How can I upload a photo to a server with the iPhone? http://stackoverflow.com/questions/125306/how-can-i-upload-a-photo-to-a-server-with-the-iphone errorSelector NSString filePath @end Main #import EPUploader.h #import zlib.h static NSString const BOUNDRY @ 0xKhTmLbOuNdArY static NSString const FORM_FLE_INPUT @ uploaded #define ASSERT x NSAssert x @ @interface EPUploader Private void upload NSURLRequest postRequestWithURL NSURL url boundry NSString boundry data.. off the upload. Note that upload will happen on a separate thread. Results An instance of Uploader. Side effects None id initWithURL NSURL aServerURL IN filePath NSString aFilePath IN delegate id aDelegate IN doneSelector SEL aDoneSelector IN errorSelector SEL anErrorSelector IN if self super init ASSERT aServerURL.. will happen on a separate thread. Results An instance of Uploader. Side effects None id initWithURL NSURL aServerURL IN filePath NSString aFilePath IN delegate id aDelegate IN doneSelector SEL aDoneSelector IN errorSelector SEL anErrorSelector IN if self super init ASSERT aServerURL ASSERT aFilePath ASSERT aDelegate..
How can I launch the Google Maps iPhone application from within my own native application? http://stackoverflow.com/questions/30058/how-can-i-launch-the-google-maps-iphone-application-from-within-my-own-native-ap i.e. not a web page through Mobile Safari in the same way that tapping an address in Contacts launches the map NOTE THIS ONLY WORKS ON THE DEVICE ITSELF. NOT IN THE SIMULATOR. iphone objective c google maps share improve this question For iOS 5.1.1 and lower use the openURL method of UIApplication . It will perform..
iOS: How to store username/password within an app? http://stackoverflow.com/questions/6972092/ios-how-to-store-username-password-within-an-app NSUserDefaults are permenant . Now the user have the possibilty to disable the username password savement. So the NSUserDefaults will be cleared then. But IN my app I need this username password for database querys for the user. So Where to store data except the NSUserDefaults This place can should be deleted when the..
Applications are expected to have a root view controller at the end of application launch http://stackoverflow.com/questions/7520971/applications-are-expected-to-have-a-root-view-controller-at-the-end-of-applicati the tab bar controller's current view as a subview of the window self.window.rootViewController self.tabBarController self.window makeKeyAndVisible return YES IN IB the tabBarController's delegate is hooked up to the App Delegate. Any know how to fix this issue iphone objective c ios cocoa touch share improve this question..
How to check for an active Internet Connection on iPhone SDK? http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk Internet Connection on iPhone SDK I would like to check to see if I have an Internet connection on the iPhone using the Cocoa Touch libraries. I came up with a way to do this using an NSURL . The way I did it seems a bit unreliable because.. see if I have an Internet connection on the iPhone using the Cocoa Touch libraries. I came up with a way to do this using an NSURL . The way I did it seems a bit unreliable because even Google could one day be down and relying on a 3rd party.. to do this using an NSURL . The way I did it seems a bit unreliable because even Google could one day be down and relying on a 3rd party seems bad and while I could check to see for a response from some other websites if Google didn't respond..
How to develop or migrate apps for iPhone 5 screen resolution? http://stackoverflow.com/questions/12395200/how-to-develop-or-migrate-apps-for-iphone-5-screen-resolution a new aspect ratio and a new resolution 640 x 1136 pixels . What is required to develop new or transition already existing applications to the new screen size What should we keep in mind to make applications universal for both the older displays.. What is required to develop new or transition already existing applications to the new screen size What should we keep in mind to make applications universal for both the older displays and the new widescreen aspect ratio iphone ios screen resolution.. is required to develop new or transition already existing applications to the new screen size What should we keep in mind to make applications universal for both the older displays and the new widescreen aspect ratio iphone ios screen resolution..
Symbolicating iPhone App Crash Reports http://stackoverflow.com/questions/1460892/symbolicating-iphone-app-crash-reports iPhone App Crash Reports I'm looking to try and symbolicate my iPhone app's crash reports. I retrieved the crash reports.. iPhone App Crash Reports I'm looking to try and symbolicate my iPhone app's crash reports. I retrieved the crash reports from iTunes Connect. I have the application.. symbolicate my iPhone app's crash reports. I retrieved the crash reports from iTunes Connect. I have the application binary that I submitted to the App Store and I have the dSYM file that was generated as part of the build. I have all of these..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c do I create delegates in Objective C I know how delegates work and I know how I can use them. But how do I create them iphone ios objective c cocoa.. C delegate is just an object that has been assigned as a delegate of another. There's no special process for creating them you simply define a class that implements the delegate methods you're interested in. Though with delegates that use.. an object that has been assigned as a delegate of another. There's no special process for creating them you simply define a class that implements the delegate methods you're interested in. Though with delegates that use a formal protocol you..
How to check for an active Internet Connection on iPhone SDK? http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk to check for an active Internet Connection on iPhone SDK I would like to check to see if I have an Internet connection on the iPhone using the Cocoa.. to check for an active Internet Connection on iPhone SDK I would like to check to see if I have an Internet connection on the iPhone using the Cocoa Touch libraries. I came up with a way to do this using an NSURL . The way.. websites if Google didn't respond it does seem wasteful and an unnecessary overhead on my application. BOOL connectedToInternet NSString URLString NSString stringWithContentsOfURL NSURL URLWithString @ http www.google.com return URLString NULL..
Add UIPickerView & a Button in Action sheet - How? http://stackoverflow.com/questions/1262574/add-uipickerview-a-button-in-action-sheet-how Give the navigation controller for SimpleTableViewController a Storyboard ID of SimpleTableVC . In SimpleTableViewController.h create an NSArray property that will represent the data in the table. Also in SimpleTableViewController.h.. of type id SimpleTableViewControllerDelegate . This is how we will pass the selection back to the parent controller. In SimpleTableViewController.m implement the tableview data source and delegate methods calling itemSelectedatRow in tableView.. implement the tableview data source and delegate methods calling itemSelectedatRow in tableView didSelectRowAtIndexPath . This approach has the added benefit of being fairly reusable. To use import the SimpleTableViewController class..
Symbolicating iPhone App Crash Reports http://stackoverflow.com/questions/1460892/symbolicating-iphone-app-crash-reports symbolicating just rename the extention .ipa with .zip extract it then we can get a Payload Folder which contain app. In this case we don't need .dSYM file. Note This can only work if the app binary does not have symbols stripped. By default..
How do I detect when someone shakes an iPhone? http://stackoverflow.com/questions/150446/how-do-i-detect-when-someone-shakes-an-iphone Does anyone know how to detect this iphone ios accelerometer shake motion detection share improve this question In 3.0 there's now an easier way hook into the new motion events. The main trick is that you need to have some UIView not UIViewController.. these methods and then selecting this new type instead of the base type in IB or using it when allocating a view . In the view controller you want to set this view to become first responder void viewWillAppear BOOL animated shakeView becomeFirstResponder..
Detecting which UIButton was pressed in a UITableView http://stackoverflow.com/questions/1802707/detecting-which-uibutton-was-pressed-in-a-uitableview . Each cell contains a UIButton which is set up as follows UITableViewCell tableView UITableView tableView cellForRowAtIndexPath NSIndexPath indexPath NSString identifier @ identifier UITableViewCell cell tableView dequeueReusableCellWithIdentifier.. contains a UIButton which is set up as follows UITableViewCell tableView UITableView tableView cellForRowAtIndexPath NSIndexPath indexPath NSString identifier @ identifier UITableViewCell cell tableView dequeueReusableCellWithIdentifier identifier.. CGRectMake 10 5 40 20 button addTarget self action @selector buttonPressedAction forControlEvents UIControlEventTouchUpInside button setTag 1 cell.contentView addSubview button button release UIButton button UIButton cell viewWithTag 1 button..
The simplest way to resize an UIImage? http://stackoverflow.com/questions/2658738/the-simplest-way-to-resize-an-uiimage simplest way to resize an UIImage In my iPhone app I take a picture with the camera then I want to resize it to 290 390 pixels. I was using this method to resize.. resize an image UIImage imageWithImage UIImage image scaledToSize CGSize newSize UIGraphicsBeginImageContext newSize In next line pass 0.0 to use the current device's pixel scaling factor and thus account for Retina resolution . Pass 1.0 to.. resolution . Pass 1.0 to force exact pixel size. UIGraphicsBeginImageContextWithOptions newSize NO 0.0 image drawInRect CGRectMake 0 0 newSize.width newSize.height UIImage newImage UIGraphicsGetImageFromCurrentImageContext UIGraphicsEndImageContext..
How do I associate file types with an iPhone application? http://stackoverflow.com/questions/2774343/how-do-i-associate-file-types-with-an-iphone-application do I associate file types with an iPhone application On the subject of associating your iPhone app with file types. In this informative question I learned that apps could be associated with custom URL protocols. That was almost one year ago.. or in another supported application. To register support you will need to have something like the following in your Info.plist key CFBundleDocumentTypes key array dict key CFBundleTypeIconFiles key array string Document molecules 320.png string.. exported so that other applications on the system can be made aware of it. To do this you would add a section to your Info.plist like the following key UTExportedTypeDeclarations key array dict key UTTypeConformsTo key array string public.plain..
Prefixing property names with an underscore in Objective C [duplicate] http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c done back in my learning Java in college days. So when I define a property in Objective C this is what I naturally do. In the header @interface Whatever NSString myStringProperty @property nonatomic copy NSString myStringProperty In the implementation.. do. In the header @interface Whatever NSString myStringProperty @property nonatomic copy NSString myStringProperty In the implementation @synthesize myStringProperty But in almost every example it is done like In the header @interface Whatever.. myStringProperty In the implementation @synthesize myStringProperty But in almost every example it is done like In the header @interface Whatever NSString _myStringProperty @property nonatomic copy NSString myStringProperty In the implementation..
Can I embed a custom font in an iPhone application? http://stackoverflow.com/questions/360751/can-i-embed-a-custom-font-in-an-iphone-application which tell me to read the documentation on X or Y. I've experimented extensively with all of these and got nowhere. In one case X turned out to be relevant only on OS X not on iPhone. Consequently I am setting a bounty for this question and.. too would be a bonus. EDIT it appears that the bounty auto awards to the answer with the highest number of votes. Interesting. No one actually provided an answer that solved the question as asked the solution that involves coding your own..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints . Generally PDF viewers are pretty heavy on memory too. Even monitor the memory usage of apple's zoomable PDF example. In my current project I'm developing a PDF viewer and am rendering a UIImage of a page in a separate thread issues here too.. will render faster than a CGPDFPageRef Use NSOperations or GCD Blocks to prepare pages ahead of time. call CGContextSetInterpolationQuality ctx kCGInterpolationHigh CGContextSetRenderingIntent ctx kCGRenderingIntentDefault before CGContextDrawPDFPage.. Use NSOperations or GCD Blocks to prepare pages ahead of time. call CGContextSetInterpolationQuality ctx kCGInterpolationHigh CGContextSetRenderingIntent ctx kCGRenderingIntentDefault before CGContextDrawPDFPage to reduce memory usage..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now IP is down. Edit 2 As was pointed out by others the preferred solution since iOS 6 is UIDevice identifierForVendor . In most cases you should be able use it as a drop in replacement to the old UIDevice uniqueIdentifier but a UUID that is created.. . Anyways nowadays 2013 this isn't necessary any more except if you need a stable device identifier on iOS 6.0. Edit 4 In iOS 7 Apple now always returns a fixed value when querying the MAC to specifically thwart the MAC as base for an ID scheme...
How can I upload a photo to a server with the iPhone? http://stackoverflow.com/questions/125306/how-can-i-upload-a-photo-to-a-server-with-the-iphone #import EPUploader.h #import zlib.h static NSString const BOUNDRY @ 0xKhTmLbOuNdArY static NSString const FORM_FLE_INPUT @ uploaded #define ASSERT x NSAssert x @ @interface EPUploader Private void upload NSURLRequest postRequestWithURL NSURL.. happen on a separate thread. Results An instance of Uploader. Side effects None id initWithURL NSURL aServerURL IN filePath NSString aFilePath IN delegate id aDelegate IN doneSelector SEL aDoneSelector IN errorSelector SEL anErrorSelector.. Results An instance of Uploader. Side effects None id initWithURL NSURL aServerURL IN filePath NSString aFilePath IN delegate id aDelegate IN doneSelector SEL aDoneSelector IN errorSelector SEL anErrorSelector IN if self super init ASSERT..
How can I launch the Google Maps iPhone application from within my own native application? http://stackoverflow.com/questions/30058/how-can-i-launch-the-google-maps-iphone-application-from-within-my-own-native-ap in the same way that tapping an address in Contacts launches the map NOTE THIS ONLY WORKS ON THE DEVICE ITSELF. NOT IN THE SIMULATOR. iphone objective c google maps share improve this question For iOS 5.1.1 and lower use the openURL method..
iOS: How to store username/password within an app? http://stackoverflow.com/questions/6972092/ios-how-to-store-username-password-within-an-app user have the possibilty to disable the username password savement. So the NSUserDefaults will be cleared then. But IN my app I need this username password for database querys for the user. So Where to store data except the NSUserDefaults..
Applications are expected to have a root view controller at the end of application launch http://stackoverflow.com/questions/7520971/applications-are-expected-to-have-a-root-view-controller-at-the-end-of-applicati a subview of the window self.window.rootViewController self.tabBarController self.window makeKeyAndVisible return YES IN IB the tabBarController's delegate is hooked up to the App Delegate. Any know how to fix this issue iphone objective c..
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