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2014/10/15 ¤U¤È 10:13:55
iphone Programming Glossary: separateLazy load images in UITableView http://stackoverflow.com/questions/1130089/lazy-load-images-in-uitableview so the UI does not freeze up while the images are being loaded. I tried getting the images in separate threads but I have to load each image every time a cell becomes visible again Otherwise reuse of cells..
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 doneSelector errorSelector Initializer. Kicks 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..
Core Data - Storing Images (iPhone) http://stackoverflow.com/questions/2090028/core-data-storing-images-iphone Data is as follows 100 kb store in the related entity person address whatever . 1 mb store in a separate entity on the other end of a relationship to avoid performance issues. 1 mb store on disk and reference..
iPhone ivar naming convention [duplicate] http://stackoverflow.com/questions/2114587/iphone-ivar-naming-convention improve this question There is not consensus on this. Some people like to use it for clarity to separate out class variables and as another responder noted to avoid conflict with incoming parameter names...
http://stackoverflow.com/questions/2496554/easiest-way-to-support-multiple-orientations-how-do-i-load-a-custom-nib-when-th and myViewControllerLandscape.xib exists in the root project directory. What I want to do is use a separate NIB myViewControllerLandscape.xib for my rotations. I try detecting rotation in viewDidLoad l ike this..
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 Note that this is the same approach we used for handling custom URL schemes. You can separate the file URLs from others by using code like the following if url isFileURL Handle file being passed..
How do you use NSAttributedString? http://stackoverflow.com/questions/3482346/how-do-you-use-nsattributedstring SDK 4.0 beta . I would like to have a string that has three colours. The reason I don't use 3 separate NSStrings is because the length of each of the three NSAttributedString substrings will be changing.. will be changing often and so I would prefer not to use any calculations to re position 3 separate NSString objects. If it's possible using NSAttributedString how do I make the following if not possible..
NSDictionary with ordered keys http://stackoverflow.com/questions/376090/nsdictionary-with-ordered-keys order not really an order that I can write an algorithm to sort them into . I could always store a separate array of the keys but that seems kind of kludgey because I'd always have to update the keys of the dictionary..
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 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. CATiledLayer rendering kicks in once.. I cache the generated image on the disk and always generate two to three images in advance in a separate thread. I don't overlay with a UIImage but instead draw the image in the layer when zooming is 1. Those..
Lazy load images in UITableViewCell http://stackoverflow.com/questions/531482/lazy-load-images-in-uitableviewcell so the UI does not freeze up while the images are being loaded. I tried getting the images in separate threads but I have to load each image every time a cell becomes visible again Otherwise reuse of cells..
iOS: how to perform an HTTP POST request? http://stackoverflow.com/questions/5537297/ios-how-to-perform-an-http-post-request NSData variable that you can process. IMPORTANT Remember to kick off the synchronous request in a separate thread to avoid blocking the UI. Asynchronously void start Don't forget to set your NSURLConnection's..
Tab bar controller inside a navigation controller, or sharing a navigation root view http://stackoverflow.com/questions/576764/tab-bar-controller-inside-a-navigation-controller-or-sharing-a-navigation-root about putting the tab bar controller as the main controller with each of the tabs containing separate navigation controllers. The problem with this is that each nav controller needs to share a single root..
Example or explanation of Core Data Migration with multiple passes? http://stackoverflow.com/questions/5995231/example-or-explanation-of-core-data-migration-with-multiple-passes the values along the migration. This results in twice the values each as a different type in a separate entitiy. To migrate we choose migration by hand and this we do with mapping models. This is also the..
iCloud basics and code sample [closed] http://stackoverflow.com/questions/7795629/icloud-basics-and-code-sample non iCloud users can still work with my text app Or do I simply ignore them Would I need to write separate functions for non iCloud users I.e. functions in which I simply load a text.txt from the documents folder.. NSString typeName error NSError outError to get files into the cloud. Do I have to incorporate separate functions which will also save a local copy of text.txt into my sandbox Will this work for non iCloud..
How can we programmatically detect which iOS version is device running on? [duplicate] http://stackoverflow.com/questions/7848766/how-can-we-programmatically-detect-which-ios-version-is-device-running-on due to its type 5.0.1 will become 5.0 or 5 float or int for comparing precisely you will have to separate it to array of INTs check accepted answer here Check iPhone iOS Version NSString ver UIDevice currentDevice..
http://stackoverflow.com/questions/8146253/animate-change-of-view-controllers-without-using-navigation-controller-stack-su . You can find it at https gist.github.com 1394947 . As an aside I prefer the implementation in a separate class b c it's easier to reuse. If you don't want that you could simply implement the same logic directly..
To ARC or not to ARC? What are the pros and cons? http://stackoverflow.com/questions/8760431/to-arc-or-not-to-arc-what-are-the-pros-and-cons this much harder than it should be to do in practice. You should probably move non ARC code into a separate xcodeproj to simplify this. In conclusion switch to ARC as soon as you can and never look back. EDIT..
Lazy load images in UITableView http://stackoverflow.com/questions/1130089/lazy-load-images-in-uitableview I get the images from URLs. I want to do a lazy load of images so the UI does not freeze up while the images are being loaded. I tried getting the images in separate threads but I have to load each image every time a cell becomes visible again Otherwise reuse of cells shows old images . Can someone please tell me how to duplicate..
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 EPUploader Uploader initWithURL filePath delegate doneSelector errorSelector Initializer. Kicks 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..
Core Data - Storing Images (iPhone) http://stackoverflow.com/questions/2090028/core-data-storing-images-iphone this question The rule for storing image data in Core Data is as follows 100 kb store in the related entity person address whatever . 1 mb store in a separate entity on the other end of a relationship to avoid performance issues. 1 mb store on disk and reference the path in your Core Data store. You can use the transformable..
iPhone ivar naming convention [duplicate] http://stackoverflow.com/questions/2114587/iphone-ivar-naming-convention done What am I missing Thanks iphone objective c share improve this question There is not consensus on this. Some people like to use it for clarity to separate out class variables and as another responder noted to avoid conflict with incoming parameter names. Even in Apple sample code the use is mixed. However I greatly..
http://stackoverflow.com/questions/2496554/easiest-way-to-support-multiple-orientations-how-do-i-load-a-custom-nib-when-th myViewController.xib exists in project Resources and myViewControllerLandscape.xib exists in the root project directory. What I want to do is use a separate NIB myViewControllerLandscape.xib for my rotations. I try detecting rotation in viewDidLoad l ike this if self.interfaceOrientation UIInterfaceOrientationLandscapeLeft..
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 url NSURL launchOptions valueForKey UIApplicationLaunchOptionsURLKey Note that this is the same approach we used for handling custom URL schemes. You can separate the file URLs from others by using code like the following if url isFileURL Handle file being passed in else Handle custom URL scheme share improve this answer..
How do you use NSAttributedString? http://stackoverflow.com/questions/3482346/how-do-you-use-nsattributedstring 3.2 or around 3.2 and is available on the iPhone as of iPhone SDK 4.0 beta . I would like to have a string that has three colours. The reason I don't use 3 separate NSStrings is because the length of each of the three NSAttributedString substrings will be changing often and so I would prefer not to use any calculations to re.. the length of each of the three NSAttributedString substrings will be changing often and so I would prefer not to use any calculations to re position 3 separate NSString objects. If it's possible using NSAttributedString how do I make the following if not possible with NSAttributed string how would you do it Edit Remember..
NSDictionary with ordered keys http://stackoverflow.com/questions/376090/nsdictionary-with-ordered-keys of my application but I'd like them to be in a specific order not really an order that I can write an algorithm to sort them into . I could always store a separate array of the keys but that seems kind of kludgey because I'd always have to update the keys of the dictionary as well as the values of the array and make sure they..
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 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. CATiledLayer rendering kicks in once the scale is 1. iBooks takes a similar double take approach.. of application using approximatively the same approach except I cache the generated image on the disk and always generate two to three images in advance in a separate thread. I don't overlay with a UIImage but instead draw the image in the layer when zooming is 1. Those tiles will be released automatically when memory warnings..
Lazy load images in UITableViewCell http://stackoverflow.com/questions/531482/lazy-load-images-in-uitableviewcell I get the images from URLs. I want to do a lazy load of images so the UI does not freeze up while the images are being loaded. I tried getting the images in separate threads but I have to load each image every time a cell becomes visible again Otherwise reuse of cells shows old images Apps like Facebook load images only for..
iOS: how to perform an HTTP POST request? http://stackoverflow.com/questions/5537297/ios-how-to-perform-an-http-post-request NSURLResponse response error NSError error This returns a NSData variable that you can process. IMPORTANT Remember to kick off the synchronous request in a separate thread to avoid blocking the UI. Asynchronously void start Don't forget to set your NSURLConnection's delegate to handle the connection as follows void connection..
Tab bar controller inside a navigation controller, or sharing a navigation root view http://stackoverflow.com/questions/576764/tab-bar-controller-inside-a-navigation-controller-or-sharing-a-navigation-root when it seems to work fine. Anyone know the reason I've thought about putting the tab bar controller as the main controller with each of the tabs containing separate navigation controllers. The problem with this is that each nav controller needs to share a single root view controller namely the Accounts table in Tweetie this..
Example or explanation of Core Data Migration with multiple passes? http://stackoverflow.com/questions/5995231/example-or-explanation-of-core-data-migration-with-multiple-passes all Version 1 Events to the two new entities and convert the values along the migration. This results in twice the values each as a different type in a separate entitiy. To migrate we choose migration by hand and this we do with mapping models. This is also the first part of the answer to your question. We will do the migration..
iCloud basics and code sample [closed] http://stackoverflow.com/questions/7795629/icloud-basics-and-code-sample nothing will happen. How will I make it possible that non iCloud users can still work with my text app Or do I simply ignore them Would I need to write separate functions for non iCloud users I.e. functions in which I simply load a text.txt from the documents folder Apple writes Treat files in iCloud the same way you treat.. to get files from the cloud and then id contentsForType NSString typeName error NSError outError to get files into the cloud. Do I have to incorporate separate functions which will also save a local copy of text.txt into my sandbox Will this work for non iCloud users As I understand iCloud it will save a local copy of..
How can we programmatically detect which iOS version is device running on? [duplicate] http://stackoverflow.com/questions/7848766/how-can-we-programmatically-detect-which-ios-version-is-device-running-on like this Both values floatValue intValue will be stripped due to its type 5.0.1 will become 5.0 or 5 float or int for comparing precisely you will have to separate it to array of INTs check accepted answer here Check iPhone iOS Version NSString ver UIDevice currentDevice systemVersion int ver_int ver intValue float ver_float..
http://stackoverflow.com/questions/8146253/animate-change-of-view-controllers-without-using-navigation-controller-stack-su a simple container class I called TransitionController . You can find it at https gist.github.com 1394947 . As an aside I prefer the implementation in a separate class b c it's easier to reuse. If you don't want that you could simply implement the same logic directly in your app delegate eliminating the need for the TransitionController..
To ARC or not to ARC? What are the pros and cons? http://stackoverflow.com/questions/8760431/to-arc-or-not-to-arc-what-are-the-pros-and-cons objc arc on a file by file basis. Xcode unfortunately makes this much harder than it should be to do in practice. You should probably move non ARC code into a separate xcodeproj to simplify this. In conclusion switch to ARC as soon as you can and never look back. EDIT I've seen a couple of comments along the lines of using ARC..
Lazy load images in UITableView http://stackoverflow.com/questions/1130089/lazy-load-images-in-uitableview do a lazy load of images so the UI does not freeze up while the images are being loaded. I tried getting the images in separate threads but I have to load each image every time a cell becomes visible again Otherwise reuse of cells shows old images..
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 filePath delegate doneSelector errorSelector Initializer. Kicks 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..
Core Data - Storing Images (iPhone) http://stackoverflow.com/questions/2090028/core-data-storing-images-iphone image data in Core Data is as follows 100 kb store in the related entity person address whatever . 1 mb store in a separate entity on the other end of a relationship to avoid performance issues. 1 mb store on disk and reference the path in your..
iPhone ivar naming convention [duplicate] http://stackoverflow.com/questions/2114587/iphone-ivar-naming-convention objective c share improve this question There is not consensus on this. Some people like to use it for clarity to separate out class variables and as another responder noted to avoid conflict with incoming parameter names. Even in Apple sample..
http://stackoverflow.com/questions/2496554/easiest-way-to-support-multiple-orientations-how-do-i-load-a-custom-nib-when-th project Resources and myViewControllerLandscape.xib exists in the root project directory. What I want to do is use a separate NIB myViewControllerLandscape.xib for my rotations. I try detecting rotation in viewDidLoad l ike this if self.interfaceOrientation..
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 UIApplicationLaunchOptionsURLKey Note that this is the same approach we used for handling custom URL schemes. You can separate the file URLs from others by using code like the following if url isFileURL Handle file being passed in else Handle custom..
How do you use NSAttributedString? http://stackoverflow.com/questions/3482346/how-do-you-use-nsattributedstring the iPhone as of iPhone SDK 4.0 beta . I would like to have a string that has three colours. The reason I don't use 3 separate NSStrings is because the length of each of the three NSAttributedString substrings will be changing often and so I would.. substrings will be changing often and so I would prefer not to use any calculations to re position 3 separate NSString objects. If it's possible using NSAttributedString how do I make the following if not possible with NSAttributed..
NSDictionary with ordered keys http://stackoverflow.com/questions/376090/nsdictionary-with-ordered-keys to be in a specific order not really an order that I can write an algorithm to sort them into . I could always store a separate array of the keys but that seems kind of kludgey because I'd always have to update the keys of the dictionary as well as..
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 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. CATiledLayer rendering kicks in once the scale is 1. iBooks.. same approach except I cache the generated image on the disk and always generate two to three images in advance in a separate thread. I don't overlay with a UIImage but instead draw the image in the layer when zooming is 1. Those tiles will be released..
Lazy load images in UITableViewCell http://stackoverflow.com/questions/531482/lazy-load-images-in-uitableviewcell do a lazy load of images so the UI does not freeze up while the images are being loaded. I tried getting the images in separate threads but I have to load each image every time a cell becomes visible again Otherwise reuse of cells shows old images..
iOS: how to perform an HTTP POST request? http://stackoverflow.com/questions/5537297/ios-how-to-perform-an-http-post-request error This returns a NSData variable that you can process. IMPORTANT Remember to kick off the synchronous request in a separate thread to avoid blocking the UI. Asynchronously void start Don't forget to set your NSURLConnection's delegate to handle..
Tab bar controller inside a navigation controller, or sharing a navigation root view http://stackoverflow.com/questions/576764/tab-bar-controller-inside-a-navigation-controller-or-sharing-a-navigation-root the reason I've thought about putting the tab bar controller as the main controller with each of the tabs containing separate navigation controllers. The problem with this is that each nav controller needs to share a single root view controller namely..
Example or explanation of Core Data Migration with multiple passes? http://stackoverflow.com/questions/5995231/example-or-explanation-of-core-data-migration-with-multiple-passes entities and convert the values along the migration. This results in twice the values each as a different type in a separate entitiy. To migrate we choose migration by hand and this we do with mapping models. This is also the first part of the answer..
iCloud basics and code sample [closed] http://stackoverflow.com/questions/7795629/icloud-basics-and-code-sample it possible that non iCloud users can still work with my text app Or do I simply ignore them Would I need to write separate functions for non iCloud users I.e. functions in which I simply load a text.txt from the documents folder Apple writes Treat.. then id contentsForType NSString typeName error NSError outError to get files into the cloud. Do I have to incorporate separate functions which will also save a local copy of text.txt into my sandbox Will this work for non iCloud users As I understand..
How can we programmatically detect which iOS version is device running on? [duplicate] http://stackoverflow.com/questions/7848766/how-can-we-programmatically-detect-which-ios-version-is-device-running-on will be stripped due to its type 5.0.1 will become 5.0 or 5 float or int for comparing precisely you will have to separate it to array of INTs check accepted answer here Check iPhone iOS Version NSString ver UIDevice currentDevice systemVersion..
http://stackoverflow.com/questions/8146253/animate-change-of-view-controllers-without-using-navigation-controller-stack-su TransitionController . You can find it at https gist.github.com 1394947 . As an aside I prefer the implementation in a separate class b c it's easier to reuse. If you don't want that you could simply implement the same logic directly in your app delegate..
To ARC or not to ARC? What are the pros and cons? http://stackoverflow.com/questions/8760431/to-arc-or-not-to-arc-what-are-the-pros-and-cons unfortunately makes this much harder than it should be to do in practice. You should probably move non ARC code into a separate xcodeproj to simplify this. In conclusion switch to ARC as soon as you can and never look back. EDIT I've seen a couple..
Secure communication between iOS client, Facebook API and server http://stackoverflow.com/questions/11507729/secure-communication-between-ios-client-facebook-api-and-server that token if the token is invalid you get an error and just pass it on to the client . Safe but a little complicated. Separate the communication between your client iOS App and the Facebook API and your Client and your Server. Your app would handle..
On the iPhone, is it possible to find out which WIFI network we are connected to? http://stackoverflow.com/questions/2637094/on-the-iphone-is-it-possible-to-find-out-which-wifi-network-we-are-connected-to sdk obtain the wi fi ssid currently connected to iphone networking wifi detect ssid share improve this question Separate answer to preserve history etc. It looks like you might not be able to determine the SSID of the WLAN to which you're connected..
Symbolicate adhoc iphone app crashes http://stackoverflow.com/questions/2697067/symbolicate-adhoc-iphone-app-crashes Symbols Yes Debug Information Format DWARF with dSYM File Deployment Postprocessing Yes Strip Linked Product Yes Use Separate Strip Yes Strip Debug Symbols During Copy No Strip Style All Symbols Once those are set Archive and reinstall your application...
Customize iphone app for different clients http://stackoverflow.com/questions/4504716/customize-iphone-app-for-different-clients the app for the new client. What is the best way to set this app up iphone xcode4 share improve this question Separate targets for each client should be the way to go. For the features I would suggest first setting up a macro identifying the..
iPhone SQLite DB and Web-based DB synchronization and interaction recommendations http://stackoverflow.com/questions/451428/iphone-sqlite-db-and-web-based-db-synchronization-and-interaction-recommendation remote DB and the local DB have the same object type and the local DB stores the id of the remote item to link the two Separate objects for the remote item and the local item Any ideas thoughts etc are greatly appreciated iphone database json sqlite..
http://stackoverflow.com/questions/5014176/mpmoviewplayercontroller-fullscreen-playback-rotation-with-underlying-uiviewcont rotation I can see effect of this transformation when I switch back from fullscreen to embedded video playback. 3 Separate UIWindow I did not test this yet but I've found somewhere that MPMoviePlayerController creates separate UIWindow for fullscreen..
Using AVAssetReader to read (stream) from a remote asset http://stackoverflow.com/questions/6242131/using-avassetreader-to-read-stream-from-a-remote-asset from the URL . Retrieve the AVPlayer's 'asset' property and load its 'tracks' using loadValuesAsynchronouslyForKeys . Separate the tracks of type AVMediaTypeVideo or simply call tracksWithMediaType on the asset once the tracks are loaded and create..
Separate 1 NSString into two NSStrings by whiteSpace http://stackoverflow.com/questions/7746554/separate-1-nsstring-into-two-nsstrings-by-whitespace 1 NSString into two NSStrings by whiteSpace I have an NSString which initially looked like a href http link.com LinkName.. iphone nsstring whitespace share improve this question NSString s @ http Link.com SiteName NSArray a s componentsSeparatedByCharactersInSet NSCharacterSet whitespaceCharacterSet NSLog @ http ' @' a objectAtIndex 0 NSLog @ site ' @' a lastObject..
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