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2014/10/15 ¤U¤È 10:09:12
iphone Programming Glossary: followsIs it possible to register a http+domain-based URL Scheme for iPhone apps, like YouTube and Maps? http://stackoverflow.com/questions/1108693/is-it-possible-to-register-a-httpdomain-based-url-scheme-for-iphone-apps-like iphone ios url share improve this question I think the least intrusive way of doing this is as follows Check if the user agent is that of an iPhone iPod Touch Check for an appInstalled cookie If the cookie..
Remove all but numbers from NSString http://stackoverflow.com/questions/1129521/remove-all-but-numbers-from-nsstring library as the other answers suggest the class you're after is called NSScanner . It's used as follows NSString originalString @ 123 123123 abc NSMutableString strippedString NSMutableString stringWithCapacity..
How can I animate the movement of a view or image along a curved path? http://stackoverflow.com/questions/1142727/how-can-i-animate-the-movement-of-a-view-or-image-along-a-curved-path When I add an item to the shopping cart I want to create an effect where an image of the item follows a curved path and ends up at the cart tab. How can I create an animation of an image along a curve like..
UIScrollView horizontal paging like Mobile Safari tabs http://stackoverflow.com/questions/1220354/uiscrollview-horizontal-paging-like-mobile-safari-tabs the range of the UIScrollView 's frame. My solution when I had to do this very recently was as follows Create a UIView subclass i.e. ClipView that will contain the UIScrollView and it's subviews. Essentially..
Get to UIViewController from UIView on iPhone? http://stackoverflow.com/questions/1340434/get-to-uiviewcontroller-from-uiview-on-iphone and what Apple does across Cocoa is to use the delegate pattern. An example of how to implement it follows @protocol MyViewDelegate NSObject void viewActionHappened @end @interface MyView UIView @property nonatomic.. implemented in the view controller or in any other class that you end up using. My original answer follows I don't recommend this neither the rest of the answers where direct access to the view controller is..
How to customize the callout bubble for MKAnnotationView? http://stackoverflow.com/questions/1565828/how-to-customize-the-callout-bubble-for-mkannotationview UIView for your callout . Then create a subclass of MKAnnotationView and override setSelected as follows void setSelected BOOL selected animated BOOL animated super setSelected selected animated animated if..
Detecting which UIButton was pressed in a UITableView http://stackoverflow.com/questions/1802707/detecting-which-uibutton-was-pressed-in-a-uitableview I have a UITableView with 5 UITableViewCells . Each cell contains a UIButton which is set up as follows UITableViewCell tableView UITableView tableView cellForRowAtIndexPath NSIndexPath indexPath NSString..
Comparison of JSON Parser for Objective-C (JSON Framework, YAJL, TouchJSON, etc) http://stackoverflow.com/questions/2256625/comparison-of-json-parser-for-objective-c-json-framework-yajl-touchjson-etc instead of NSString. In addition as far as I tested the result of performance comparison is as follows fast YAJL JSON Framework Touch JSON slow . If you know pros and cons of these JSON parsers could you..
Rounded UIView using CALayers - only some corners - How? http://stackoverflow.com/questions/2264083/rounded-uiview-using-calayers-only-some-corners-how UIView using CALayers only some corners How In my application there are four buttons named as follows. Top left Bottom left Top right Bottom right Above this buttons there is an image view or we can use..
iPhone image stretching (skew) http://stackoverflow.com/questions/2351586/iphone-image-stretching-skew the vector x y z w 1 will be converted to the actual 3D vector x w y w z w before projection if CA follows usual 3D compute graphics rules so you could cheat by using the transform P . . Q x x' . R . S y y'..
JSON and Core Data on the iPhone http://stackoverflow.com/questions/2362323/json-and-core-data-on-the-iphone NSString json withManagedObjectContext NSManagedObjectContext moc And the implementation is as follows NSDictionary dataStructureFromManagedObject NSManagedObject managedObject NSDictionary attributesByName..
Xcode 4: create IPA file instead of .xcarchive http://stackoverflow.com/questions/5265292/xcode-4-create-ipa-file-instead-of-xcarchive to package them both into an .ipa file so it merely disables the option. A way to solve this is as follows go through build settings for each of the targets except the application target and set Skip Install..
iOS: how to perform an HTTP POST request? http://stackoverflow.com/questions/5537297/ios-how-to-perform-an-http-post-request response. iphone objective c ios share improve this question You can use NSURLConnection as follows Set your NSURLRequest Use requestWithURL NSURL theURL to initialise the request. If you need to specify.. void start Don't forget to set your NSURLConnection's delegate to handle the connection as follows void connection NSURLConnection connection didReceiveResponse NSURLResponse response self.data setLength..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers that it DEPENDS on another object. So we might modify our BookPickerViewController init method as follows @implementation BookPickerViewController void initWithWarehouse BookWarehouse warehouse andCheckoutController..
CADisplayLink OpenGL rendering breaks UIScrollView behaviour http://stackoverflow.com/questions/5944050/cadisplaylink-opengl-rendering-breaks-uiscrollview-behaviour frameRenderingSemaphore where frameRenderingSemaphore is created earlier as follows frameRenderingSemaphore dispatch_semaphore_create 1 This code will only add a new frame rendering action..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c that information when delegates are set. One very clean way to do this is to use a bitfield as follows @protocol SomethingDelegate NSObject @optional void something id something didFinishLoadingItem id item..
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring but found very few details which were helpful. With these details I've tried to cook some code as follows. Note Please compare the details shared in this post with other posts before marking this as DUPLICATE..
http://stackoverflow.com/questions/8146253/animate-change-of-view-controllers-without-using-navigation-controller-stack-su need for the TransitionController class. The logic you'd need would be the same however. Use it as follows In your app delegate add a property for the TransitionController BOOL application UIApplication application..
Is it possible to register a http+domain-based URL Scheme for iPhone apps, like YouTube and Maps? http://stackoverflow.com/questions/1108693/is-it-possible-to-register-a-httpdomain-based-url-scheme-for-iphone-apps-like fails Not sure if this will work... suggestions Thanks iphone ios url share improve this question I think the least intrusive way of doing this is as follows Check if the user agent is that of an iPhone iPod Touch Check for an appInstalled cookie If the cookie exists and is set to true set window.location to your uri..
Remove all but numbers from NSString http://stackoverflow.com/questions/1129521/remove-all-but-numbers-from-nsstring this question There's no need to use a regular expressions library as the other answers suggest the class you're after is called NSScanner . It's used as follows NSString originalString @ 123 123123 abc NSMutableString strippedString NSMutableString stringWithCapacity originalString.length NSScanner scanner NSScanner scannerWithString..
How can I animate the movement of a view or image along a curved path? http://stackoverflow.com/questions/1142727/how-can-i-animate-the-movement-of-a-view-or-image-along-a-curved-path along a curved path I am developing a commerce application. When I add an item to the shopping cart I want to create an effect where an image of the item follows a curved path and ends up at the cart tab. How can I create an animation of an image along a curve like this iphone objective c ios cocoa touch core animation..
UIScrollView horizontal paging like Mobile Safari tabs http://stackoverflow.com/questions/1220354/uiscrollview-horizontal-paging-like-mobile-safari-tabs is getting it to scroll when the user starts the drag outside the range of the UIScrollView 's frame. My solution when I had to do this very recently was as follows Create a UIView subclass i.e. ClipView that will contain the UIScrollView and it's subviews. Essentially it should have the frame of what you would assume the UIScrollView..
Get to UIViewController from UIView on iPhone? http://stackoverflow.com/questions/1340434/get-to-uiviewcontroller-from-uiview-on-iphone in a way with the view controller the recommended way and what Apple does across Cocoa is to use the delegate pattern. An example of how to implement it follows @protocol MyViewDelegate NSObject void viewActionHappened @end @interface MyView UIView @property nonatomic assign MyViewDelegate delegate @end @interface MyViewController.. as UITableView does for instance and it doesn't care if its implemented in the view controller or in any other class that you end up using. My original answer follows I don't recommend this neither the rest of the answers where direct access to the view controller is achieved There is no built in way to do it. While you can get..
How to customize the callout bubble for MKAnnotationView? http://stackoverflow.com/questions/1565828/how-to-customize-the-callout-bubble-for-mkannotationview question There is an even easier solution. Create a custom UIView for your callout . Then create a subclass of MKAnnotationView and override setSelected as follows void setSelected BOOL selected animated BOOL animated super setSelected selected animated animated if selected Add your custom view to self... else Remove your..
Detecting which UIButton was pressed in a UITableView http://stackoverflow.com/questions/1802707/detecting-which-uibutton-was-pressed-in-a-uitableview which UIButton was pressed in a UITableView I have 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..
Comparison of JSON Parser for Objective-C (JSON Framework, YAJL, TouchJSON, etc) http://stackoverflow.com/questions/2256625/comparison-of-json-parser-for-objective-c-json-framework-yajl-touchjson-etc long history and is widely used. Touch JSON parses NSData instead of NSString. In addition as far as I tested the result of performance comparison is as follows fast YAJL JSON Framework Touch JSON slow . If you know pros and cons of these JSON parsers could you tell me Lastly if you know any other JSON Parser please tell..
Rounded UIView using CALayers - only some corners - How? http://stackoverflow.com/questions/2264083/rounded-uiview-using-calayers-only-some-corners-how UIView using CALayers only some corners How In my application there are four buttons named as follows. Top left Bottom left Top right Bottom right Above this buttons there is an image view or we can use also UIView. Now suppose user taps on top left button. Above..
iPhone image stretching (skew) http://stackoverflow.com/questions/2351586/iphone-image-stretching-skew cannot perform this as a 2D transform either. However the vector x y z w 1 will be converted to the actual 3D vector x w y w z w before projection if CA follows usual 3D compute graphics rules so you could cheat by using the transform P . . Q x x' . R . S y y' . . 1 . z z' . T . U 1 w' with appropriate P Q R S T U that..
JSON and Core Data on the iPhone http://stackoverflow.com/questions/2362323/json-and-core-data-on-the-iphone NSArray managedObjects NSArray managedObjectsFromJSONStructure NSString json withManagedObjectContext NSManagedObjectContext moc And the implementation is as follows NSDictionary dataStructureFromManagedObject NSManagedObject managedObject NSDictionary attributesByName managedObject entity attributesByName NSDictionary relationshipsByName..
Xcode 4: create IPA file instead of .xcarchive http://stackoverflow.com/questions/5265292/xcode-4-create-ipa-file-instead-of-xcarchive products folder and Xcode gets naïvely confused about how to package them both into an .ipa file so it merely disables the option. A way to solve this is as follows go through build settings for each of the targets except the application target and set Skip Install flag to YES. Then do the Product Archive tango once again and..
iOS: how to perform an HTTP POST request? http://stackoverflow.com/questions/5537297/ios-how-to-perform-an-http-post-request data username and password and getting back a plain text response. iphone objective c ios share improve this question You can use NSURLConnection as follows Set your NSURLRequest Use requestWithURL NSURL theURL to initialise the request. If you need to specify a POST request and or HTTP headers use NSMutableURLRequest.. 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 NSURLConnection connection didReceiveResponse NSURLResponse response self.data setLength 0 void connection NSURLConnection connection didReceiveData..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers should DELEGATE that work to some other object which means that it DEPENDS on another object. So we might modify our BookPickerViewController init method as follows @implementation BookPickerViewController void initWithWarehouse BookWarehouse warehouse andCheckoutController CheckoutController checkoutController myBookWarehouse..
CADisplayLink OpenGL rendering breaks UIScrollView behaviour http://stackoverflow.com/questions/5944050/cadisplaylink-opengl-rendering-breaks-uiscrollview-behaviour ^ EAGLContext setCurrentContext context Render here dispatch_semaphore_signal frameRenderingSemaphore where frameRenderingSemaphore is created earlier as follows frameRenderingSemaphore dispatch_semaphore_create 1 This code will only add a new frame rendering action onto the queue if one isn't in the middle of executing...
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c to a selector every time we want to message it you can cache that information when delegates are set. One very clean way to do this is to use a bitfield as follows @protocol SomethingDelegate NSObject @optional void something id something didFinishLoadingItem id item void something id something didFailWithError NSError error..
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring Usage Tracking Monitoring I've searched over this topic but found very few details which were helpful. With these details I've tried to cook some code as follows. Note Please compare the details shared in this post with other posts before marking this as DUPLICATE and not just by the subject. NSArray getDataCountersForType..
http://stackoverflow.com/questions/8146253/animate-change-of-view-controllers-without-using-navigation-controller-stack-su same logic directly in your app delegate eliminating the need for the TransitionController class. The logic you'd need would be the same however. Use it as follows In your app delegate add a property for the TransitionController BOOL application UIApplication application didFinishLaunchingWithOptions NSDictionary launchOptions..
Is it possible to register a http+domain-based URL Scheme for iPhone apps, like YouTube and Maps? http://stackoverflow.com/questions/1108693/is-it-possible-to-register-a-httpdomain-based-url-scheme-for-iphone-apps-like suggestions Thanks iphone ios url share improve this question I think the least intrusive way of doing this is as follows Check if the user agent is that of an iPhone iPod Touch Check for an appInstalled cookie If the cookie exists and is set..
Remove all but numbers from NSString http://stackoverflow.com/questions/1129521/remove-all-but-numbers-from-nsstring a regular expressions library as the other answers suggest the class you're after is called NSScanner . It's used as follows NSString originalString @ 123 123123 abc NSMutableString strippedString NSMutableString stringWithCapacity originalString.length..
How can I animate the movement of a view or image along a curved path? http://stackoverflow.com/questions/1142727/how-can-i-animate-the-movement-of-a-view-or-image-along-a-curved-path a commerce application. When I add an item to the shopping cart I want to create an effect where an image of the item follows a curved path and ends up at the cart tab. How can I create an animation of an image along a curve like this iphone objective..
UIScrollView horizontal paging like Mobile Safari tabs http://stackoverflow.com/questions/1220354/uiscrollview-horizontal-paging-like-mobile-safari-tabs starts the drag outside the range of the UIScrollView 's frame. My solution when I had to do this very recently was as follows Create a UIView subclass i.e. ClipView that will contain the UIScrollView and it's subviews. Essentially it should have..
Get to UIViewController from UIView on iPhone? http://stackoverflow.com/questions/1340434/get-to-uiviewcontroller-from-uiview-on-iphone the recommended way and what Apple does across Cocoa is to use the delegate pattern. An example of how to implement it follows @protocol MyViewDelegate NSObject void viewActionHappened @end @interface MyView UIView @property nonatomic assign MyViewDelegate.. doesn't care if its implemented in the view controller or in any other class that you end up using. My original answer follows I don't recommend this neither the rest of the answers where direct access to the view controller is achieved There is no..
How to customize the callout bubble for MKAnnotationView? http://stackoverflow.com/questions/1565828/how-to-customize-the-callout-bubble-for-mkannotationview Create a custom UIView for your callout . Then create a subclass of MKAnnotationView and override setSelected as follows void setSelected BOOL selected animated BOOL animated super setSelected selected animated animated if selected Add your..
Detecting which UIButton was pressed in a UITableView http://stackoverflow.com/questions/1802707/detecting-which-uibutton-was-pressed-in-a-uitableview in a UITableView I have 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..
Comparison of JSON Parser for Objective-C (JSON Framework, YAJL, TouchJSON, etc) http://stackoverflow.com/questions/2256625/comparison-of-json-parser-for-objective-c-json-framework-yajl-touchjson-etc JSON parses NSData instead of NSString. In addition as far as I tested the result of performance comparison is as follows fast YAJL JSON Framework Touch JSON slow . If you know pros and cons of these JSON parsers could you tell me Lastly if you..
Rounded UIView using CALayers - only some corners - How? http://stackoverflow.com/questions/2264083/rounded-uiview-using-calayers-only-some-corners-how UIView using CALayers only some corners How In my application there are four buttons named as follows. Top left Bottom left Top right Bottom right Above this buttons there is an image view or we can use also UIView. Now suppose..
iPhone image stretching (skew) http://stackoverflow.com/questions/2351586/iphone-image-stretching-skew either. However the vector x y z w 1 will be converted to the actual 3D vector x w y w z w before projection if CA follows usual 3D compute graphics rules so you could cheat by using the transform P . . Q x x' . R . S y y' . . 1 . z z' . T . U..
JSON and Core Data on the iPhone http://stackoverflow.com/questions/2362323/json-and-core-data-on-the-iphone NSString json withManagedObjectContext NSManagedObjectContext moc And the implementation is as follows NSDictionary dataStructureFromManagedObject NSManagedObject managedObject NSDictionary attributesByName managedObject entity..
Xcode 4: create IPA file instead of .xcarchive http://stackoverflow.com/questions/5265292/xcode-4-create-ipa-file-instead-of-xcarchive confused about how to package them both into an .ipa file so it merely disables the option. A way to solve this is as follows go through build settings for each of the targets except the application target and set Skip Install flag to YES. Then do..
iOS: how to perform an HTTP POST request? http://stackoverflow.com/questions/5537297/ios-how-to-perform-an-http-post-request back a plain text response. iphone objective c ios share improve this question You can use NSURLConnection as follows Set your NSURLRequest Use requestWithURL NSURL theURL to initialise the request. If you need to specify a POST request and.. the UI. Asynchronously void start Don't forget to set your NSURLConnection's delegate to handle the connection as follows void connection NSURLConnection connection didReceiveResponse NSURLResponse response self.data setLength 0 void connection..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers object which means that it DEPENDS on another object. So we might modify our BookPickerViewController init method as follows @implementation BookPickerViewController void initWithWarehouse BookWarehouse warehouse andCheckoutController CheckoutController..
CADisplayLink OpenGL rendering breaks UIScrollView behaviour http://stackoverflow.com/questions/5944050/cadisplaylink-opengl-rendering-breaks-uiscrollview-behaviour Render here dispatch_semaphore_signal frameRenderingSemaphore where frameRenderingSemaphore is created earlier as follows frameRenderingSemaphore dispatch_semaphore_create 1 This code will only add a new frame rendering action onto the queue..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c it you can cache that information when delegates are set. One very clean way to do this is to use a bitfield as follows @protocol SomethingDelegate NSObject @optional void something id something didFinishLoadingItem id item void something id..
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring over this topic but found very few details which were helpful. With these details I've tried to cook some code as follows. Note Please compare the details shared in this post with other posts before marking this as DUPLICATE and not just by the..
http://stackoverflow.com/questions/8146253/animate-change-of-view-controllers-without-using-navigation-controller-stack-su eliminating the need for the TransitionController class. The logic you'd need would be the same however. Use it as follows In your app delegate add a property for the TransitionController BOOL application UIApplication application didFinishLaunchingWithOptions..
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