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2014/10/15 ¤U¤È 10:04:55
iphone Programming Glossary: casesHow to intercept touches events on a MKMapView or UIWebView objects? http://stackoverflow.com/questions/1049889/how-to-intercept-touches-events-on-a-mkmapview-or-uiwebview-objects improve this question None of the previous solutions above will work perfectly especially in cases involving multitouch. This solutions is the least intrusive and from my experience the best. The best..
http://stackoverflow.com/questions/1106943/nscalendar-first-day-of-week not Sunday. I can most likely do some work to work around this but there will be a lot of corner cases. I'd prefer the platform do it for me. Thanks in advance Here's some the code that I'm using. it's saturday..
Use CoreData or SQLite on iPhone? [closed] http://stackoverflow.com/questions/1318467/use-coredata-or-sqlite-on-iphone though it seems counterintuitive given how much overhead you'd think the framework has in most cases you can beat the performance of hand tuned SQLite using Core Data. On the iPhone it does a great job..
Programmatically align a toolbar on top of the iPhone keyboard http://stackoverflow.com/questions/158574/programmatically-align-a-toolbar-on-top-of-the-iphone-keyboard align a toolbar on top of the iPhone keyboard In several cases I want to add a toolbar to the top of the iPhone keyboard as in iPhone Safari when you're navigating..
iPhone image stretching (skew) http://stackoverflow.com/questions/2351586/iphone-image-stretching-skew locations. 6 unique coordinates and 6 variables should have exactly 1 solution most of the cases. When you have found these 6 constants you can craft a CATransform3D . Notice the structure definition..
Objective-C - When to use 'self' http://stackoverflow.com/questions/2385980/objective-c-when-to-use-self anyone explain why self is needed in the first case but not the second I'm assuming that in both cases mainViewController is referring to the same instance variable. iphone objective c cocoa touch share..
Objective-C categories in static library http://stackoverflow.com/questions/2567498/objective-c-categories-in-static-library use force_load to reduce app binary size and to avoid conflicts wich all_load can cause in some cases. Yes it works with .a files added to the project. Yet I had troubles with lib project added as direct..
Remove HTML Tags from an NSString on the iPhone http://stackoverflow.com/questions/277055/remove-html-tags-from-an-nsstring-on-the-iphone the iPhone doesn't support NSAttributedString or NSXMLDocument. There are too many edge cases and malformed HTML documents for me to feel comfortable using regex or NSScanner. Does anyone have a.. simply look for opening and closing tag characters this method won't work except for very trivial cases. For example these cases from the Perl Cookbook chapter on the same subject would break this method.. and closing tag characters this method won't work except for very trivial cases. For example these cases from the Perl Cookbook chapter on the same subject would break this method IMG SRC foo.gif ALT A B A..
didFinishPickingMediaWithInfo return nil photo http://stackoverflow.com/questions/3088874/didfinishpickingmediawithinfo-return-nil-photo picker dismissModalViewControllerAnimated YES picker release In all of those cases the image will be nil. However via the magic of releasing the UIImagePickerController first... This..
Difference between [UIImage imageNamed…] and [UIImage imageWithData…]? http://stackoverflow.com/questions/316236/difference-between-uiimage-imagenamed-and-uiimage-imagewithdata on what you're doing with the image. The imageNamed method does cache the image but in many cases that's going to help with memory use. For example if you load an image 10 times to display along with..
Difference between [NSMutableArray array] vs [[NSMutableArray alloc] init] http://stackoverflow.com/questions/5423211/difference-between-nsmutablearray-array-vs-nsmutablearray-alloc-init i don't need to release anything That is exactly correct when you vend an object. But in other cases when you create an object on iOS where you have a choice between obtaining a ready made autoreleased..
How to programmatically determine iPhone interface orientation? http://stackoverflow.com/questions/634745/how-to-programmatically-determine-iphone-interface-orientation in portrait or landscape mode. Is there a way to find the current orientation of the GUI in cases where the device is returning ambiguous information I suppose I could track orientation change events..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c incremented set to 1 really when the object is created with an init method. In either of these cases it is my responsibility to call release on the object when I'm done with it. If I don't there will be..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now 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 there a good charting library for iPhone? [closed] http://stackoverflow.com/questions/769749/is-there-a-good-charting-library-for-iphone was the lack of good plotting frameworks on the iPhone. Core Plot also encompases many other use cases including desktop systems but its design has included iPhone support from the beginning. It's getting..
How to intercept touches events on a MKMapView or UIWebView objects? http://stackoverflow.com/questions/1049889/how-to-intercept-touches-events-on-a-mkmapview-or-uiwebview-objects what I'm doing wrong iphone objective c iphone sdk 3.0 share improve this question None of the previous solutions above will work perfectly especially in cases involving multitouch. This solutions is the least intrusive and from my experience the best. The best way I have found to achieve this is with a Gesture Recognizer...
http://stackoverflow.com/questions/1106943/nscalendar-first-day-of-week around a week's worth of work and it needs to start on Monday not Sunday. I can most likely do some work to work around this but there will be a lot of corner cases. I'd prefer the platform do it for me. Thanks in advance Here's some the code that I'm using. it's saturday now so what I would hope is that weekday would be 6..
Use CoreData or SQLite on iPhone? [closed] http://stackoverflow.com/questions/1318467/use-coredata-or-sqlite-on-iphone performance benefits particularly on the iPhone. Even though it seems counterintuitive given how much overhead you'd think the framework has in most cases you can beat the performance of hand tuned SQLite using Core Data. On the iPhone it does a great job of batching fetches to minimize memory usage. The one downside..
Programmatically align a toolbar on top of the iPhone keyboard http://stackoverflow.com/questions/158574/programmatically-align-a-toolbar-on-top-of-the-iphone-keyboard align a toolbar on top of the iPhone keyboard In several cases I want to add a toolbar to the top of the iPhone keyboard as in iPhone Safari when you're navigating form elements for example . Currently I am specifying the toolbar's..
iPhone image stretching (skew) http://stackoverflow.com/questions/2351586/iphone-image-stretching-skew with appropriate P Q R S T U that maps the 4 points to the expected locations. 6 unique coordinates and 6 variables should have exactly 1 solution most of the cases. When you have found these 6 constants you can craft a CATransform3D . Notice the structure definition is struct CATransform3D CGFloat m11 m12 m13 m14 CGFloat m21..
Objective-C - When to use 'self' http://stackoverflow.com/questions/2385980/objective-c-when-to-use-self self keyword to the second example the program runs fine. Can anyone explain why self is needed in the first case but not the second I'm assuming that in both cases mainViewController is referring to the same instance variable. iphone objective c cocoa touch share improve this question Using self causes your class' setter..
Objective-C categories in static library http://stackoverflow.com/questions/2567498/objective-c-categories-in-static-library This option allows you to target a specific archive. we can use force_load to reduce app binary size and to avoid conflicts wich all_load can cause in some cases. Yes it works with .a files added to the project. Yet I had troubles with lib project added as direct dependency. But later I found that it was my fault direct..
Remove HTML Tags from an NSString on the iPhone http://stackoverflow.com/questions/277055/remove-html-tags-from-an-nsstring-on-the-iphone method to apply an XSLT transform that does it. Unfortunately the iPhone doesn't support NSAttributedString or NSXMLDocument. There are too many edge cases and malformed HTML documents for me to feel comfortable using regex or NSScanner. Does anyone have a solution to this One suggestion has been to simply look for.. anyone have a solution to this One suggestion has been to simply look for opening and closing tag characters this method won't work except for very trivial cases. For example these cases from the Perl Cookbook chapter on the same subject would break this method IMG SRC foo.gif ALT A B A comment script if a b a c script INCLUDE.. to this One suggestion has been to simply look for opening and closing tag characters this method won't work except for very trivial cases. For example these cases from the Perl Cookbook chapter on the same subject would break this method IMG SRC foo.gif ALT A B A comment script if a b a c script INCLUDE CDATA iphone objective..
didFinishPickingMediaWithInfo return nil photo http://stackoverflow.com/questions/3088874/didfinishpickingmediawithinfo-return-nil-photo assignment UIImage myImage info objectForKey UIImagePickerControllerEditedImage picker dismissModalViewControllerAnimated YES picker release In all of those cases the image will be nil. However via the magic of releasing the UIImagePickerController first... This DOES work void imagePickerController UIImagePickerController..
Difference between [UIImage imageNamed…] and [UIImage imageWithData…]? http://stackoverflow.com/questions/316236/difference-between-uiimage-imagenamed-and-uiimage-imagewithdata iphone cocoa touch share improve this question It depends on what you're doing with the image. The imageNamed method does cache the image but in many cases that's going to help with memory use. For example if you load an image 10 times to display along with some text in a table view UIImage will only keep a single..
Difference between [NSMutableArray array] vs [[NSMutableArray alloc] init] http://stackoverflow.com/questions/5423211/difference-between-nsmutablearray-array-vs-nsmutablearray-alloc-init because memory leak problems. Now using the first declaration i don't need to release anything That is exactly correct when you vend an object. But in other cases when you create an object on iOS where you have a choice between obtaining a ready made autoreleased object and calling alloc followed by release Apple wants you..
How to programmatically determine iPhone interface orientation? http://stackoverflow.com/questions/634745/how-to-programmatically-determine-iphone-interface-orientation doesn't tell us whether it's flat displaying an interface oriented in portrait or landscape mode. Is there a way to find the current orientation of the GUI in cases where the device is returning ambiguous information I suppose I could track orientation change events to remember the last portrait landscape orientation or check..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c is incremented by calling retain . By convention it is also incremented set to 1 really when the object is created with an init method. In either of these cases it is my responsibility to call release on the object when I'm done with it. If I don't there will be a memory leak. Example of object creation NSString s NSString..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now 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 time is what..
Is there a good charting library for iPhone? [closed] http://stackoverflow.com/questions/769749/is-there-a-good-charting-library-for-iphone One of the many factors that motivated the Core Plot project was the lack of good plotting frameworks on the iPhone. Core Plot also encompases many other use cases including desktop systems but its design has included iPhone support from the beginning. It's getting pretty close to useable and is currently in use in several..
How to intercept touches events on a MKMapView or UIWebView objects? http://stackoverflow.com/questions/1049889/how-to-intercept-touches-events-on-a-mkmapview-or-uiwebview-objects iphone sdk 3.0 share improve this question None of the previous solutions above will work perfectly especially in cases involving multitouch. This solutions is the least intrusive and from my experience the best. The best way I have found to..
http://stackoverflow.com/questions/1106943/nscalendar-first-day-of-week to start on Monday not Sunday. I can most likely do some work to work around this but there will be a lot of corner cases. I'd prefer the platform do it for me. Thanks in advance Here's some the code that I'm using. it's saturday now so what..
Cocoa: What's the Difference between the frame and the bounds? http://stackoverflow.com/questions/1210047/cocoa-whats-the-difference-between-the-frame-and-the-bounds 100 frame.origin.x 25 frame.origin.y 25 frame.size.width 100 frame.size.height 100 So we can see that in both cases the width and the height of the view is the same regardless of whether we are looking at the bounds or frame. What is different..
Use CoreData or SQLite on iPhone? [closed] http://stackoverflow.com/questions/1318467/use-coredata-or-sqlite-on-iphone on the iPhone. Even though it seems counterintuitive given how much overhead you'd think the framework has in most cases you can beat the performance of hand tuned SQLite using Core Data. On the iPhone it does a great job of batching fetches..
Programmatically align a toolbar on top of the iPhone keyboard http://stackoverflow.com/questions/158574/programmatically-align-a-toolbar-on-top-of-the-iphone-keyboard align a toolbar on top of the iPhone keyboard In several cases I want to add a toolbar to the top of the iPhone keyboard as in iPhone Safari when you're navigating form elements for example..
iPhone image stretching (skew) http://stackoverflow.com/questions/2351586/iphone-image-stretching-skew 4 points to the expected locations. 6 unique coordinates and 6 variables should have exactly 1 solution most of the cases. When you have found these 6 constants you can craft a CATransform3D . Notice the structure definition is struct CATransform3D..
Objective-C - When to use 'self' http://stackoverflow.com/questions/2385980/objective-c-when-to-use-self runs fine. Can anyone explain why self is needed in the first case but not the second I'm assuming that in both cases mainViewController is referring to the same instance variable. iphone objective c cocoa touch share improve this question..
Objective-C categories in static library http://stackoverflow.com/questions/2567498/objective-c-categories-in-static-library archive. we can use force_load to reduce app binary size and to avoid conflicts wich all_load can cause in some cases. Yes it works with .a files added to the project. Yet I had troubles with lib project added as direct dependency. But later..
SEL performSelector and arguments http://stackoverflow.com/questions/2716143/sel-performselector-and-arguments and you need to test for a nil result from that call and you must return self from the initializer method. In all cases your Objective C initializer methods should look like id myInitMethod self super init if self nil perform initialization..
Remove HTML Tags from an NSString on the iPhone http://stackoverflow.com/questions/277055/remove-html-tags-from-an-nsstring-on-the-iphone that does it. Unfortunately the iPhone doesn't support NSAttributedString or NSXMLDocument. There are too many edge cases and malformed HTML documents for me to feel comfortable using regex or NSScanner. Does anyone have a solution to this One.. has been to simply look for opening and closing tag characters this method won't work except for very trivial cases. For example these cases from the Perl Cookbook chapter on the same subject would break this method IMG SRC foo.gif ALT.. look for opening and closing tag characters this method won't work except for very trivial cases. For example these cases from the Perl Cookbook chapter on the same subject would break this method IMG SRC foo.gif ALT A B A comment script if a..
didFinishPickingMediaWithInfo return nil photo http://stackoverflow.com/questions/3088874/didfinishpickingmediawithinfo-return-nil-photo UIImagePickerControllerEditedImage picker dismissModalViewControllerAnimated YES picker release In all of those cases the image will be nil. However via the magic of releasing the UIImagePickerController first... This DOES work void imagePickerController..
Difference between [UIImage imageNamed…] and [UIImage imageWithData…]? http://stackoverflow.com/questions/316236/difference-between-uiimage-imagenamed-and-uiimage-imagewithdata this question It depends on what you're doing with the image. The imageNamed method does cache the image but in many cases that's going to help with memory use. For example if you load an image 10 times to display along with some text in a table..
Event handling for iOS - how hitTest:withEvent: and pointInside:withEvent: are related? http://stackoverflow.com/questions/4961386/event-handling-for-ios-how-hittestwithevent-and-pointinsidewithevent-are-r hierarchy is returned eventually. However you might override hitTest withEvent to do something differently. In many cases overriding pointInside withEvent is simpler and still provides enough options to tweak event handling in your application...
Difference between [NSMutableArray array] vs [[NSMutableArray alloc] init] http://stackoverflow.com/questions/5423211/difference-between-nsmutablearray-array-vs-nsmutablearray-alloc-init the first declaration i don't need to release anything That is exactly correct when you vend an object. But in other cases when you create an object on iOS where you have a choice between obtaining a ready made autoreleased object and calling..
How to programmatically determine iPhone interface orientation? http://stackoverflow.com/questions/634745/how-to-programmatically-determine-iphone-interface-orientation an interface oriented in portrait or landscape mode. Is there a way to find the current orientation of the GUI in cases where the device is returning ambiguous information I suppose I could track orientation change events to remember the last..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c convention it is also incremented set to 1 really when the object is created with an init method. In either of these cases it is my responsibility to call release on the object when I'm done with it. If I don't there will be a memory leak. Example..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now 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..
Is there a good charting library for iPhone? [closed] http://stackoverflow.com/questions/769749/is-there-a-good-charting-library-for-iphone the Core Plot project was the lack of good plotting frameworks on the iPhone. Core Plot also encompases many other use cases including desktop systems but its design has included iPhone support from the beginning. It's getting pretty close to useable..
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