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2014/10/15 ¤U¤È 10:13:09
iphone Programming Glossary: reasonsWhen should I release objects in -(void)viewDidUnload rather than in -dealloc? http://stackoverflow.com/questions/1158788/when-should-i-release-objects-in-voidviewdidunload-rather-than-in-dealloc indicated I wanted to elaborate more about logic behind viewDidUnload . One of the most important reasons for implementing it is that UIViewController subclasses commonly also contain owning references to various..
Declaration/definition of variables locations in ObjectiveC? http://stackoverflow.com/questions/12632285/declaration-definition-of-variables-locations-in-objectivec MyClass.m @implementation MyClass @end This will work exactly as the code above. For compatibility reasons you can still declare ivars in the header. But because the only reason why you would want to do that..
Use CoreData or SQLite on iPhone? [closed] http://stackoverflow.com/questions/1318467/use-coredata-or-sqlite-on-iphone 3.0 is it meant to be the answer to data persistence and replace all need for direct SQLite What reasons exist to still use SQLite What are advantages disadvantages of SQLite vs. CoreData iphone ios sqlite..
iOS crash reports: atos not working as expected http://stackoverflow.com/questions/13574933/ios-crash-reports-atos-not-working-as-expected
Programmatically get own phone number in iOS http://stackoverflow.com/questions/193182/programmatically-get-own-phone-number-in-ios 2009. Our application was just rejected for using it. Here's the response from Apple For security reasons iPhone OS restricts an application including its preferences and data to a unique location in the file..
Adding Core Data to existing iPhone project http://stackoverflow.com/questions/2032818/adding-core-data-to-existing-iphone-project alert panel that instructs the user to quit the application by pressing the Home button. Typical reasons for an error here include The persistent store is not accessible The schema for the persistent store..
iPhone ivar naming convention [duplicate] http://stackoverflow.com/questions/2114587/iphone-ivar-naming-convention sample code the use is mixed. However I greatly prefer to not use the _ prefix and have two strong reasons 1 Some people think the _ is a good indicator of private . My take is that NO class local variable should..
What's the best way to find the user's Documents directory on an iPhone? http://stackoverflow.com/questions/272544/whats-the-best-way-to-find-the-users-documents-directory-on-an-iphone NSDocumentsDirectory NSUserDomainMask YES Are there any particular reasons to use one over the other iphone objective c cocoa touch share improve this question NSSearchPathForDirectoriesInDomains..
http://stackoverflow.com/questions/37464/iphone-app-minus-app-store has to be jailbroken as long as I can still run an application created using the official SDK. For reasons I won't get into I can't have this program going through the app store. Thanks for any help you can..
A html5 web app for mobile safari to upload images from the Photos.app? http://stackoverflow.com/questions/3891831/a-html5-web-app-for-mobile-safari-to-upload-images-from-the-photos-app safari share improve this question I hate this word but it's impossible up now . Here is the reasons 1 mobile safari doesn't support upload anything. 2 mobile safari can't access ios components actually..
http://stackoverflow.com/questions/402/iphone-app-in-landscape-mode It's incredible how much trouble that caused so many developers for so long Purely for historical reasons here is the original discussion and solution to repeat this is totally irrelevant now It is EXTREMELY..
Is there a way to make drawRect work right NOW? http://stackoverflow.com/questions/4739748/is-there-a-way-to-make-drawrect-work-right-now So the overwhelming thing is this weird progressive slow down on each iteration for unknown reasons the time taken for a loop deceases. Note that this applies to both doing it properly background look..
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 but this is at the cost of both time and space performance. This is yet another in a long list of reasons to minimize your use of ObjC . ARC will not work at all on iPhoneOS 3 or Mac OS X 10.5 or earlier. This..
When should I release objects in -(void)viewDidUnload rather than in -dealloc? http://stackoverflow.com/questions/1158788/when-should-i-release-objects-in-voidviewdidunload-rather-than-in-dealloc improve this question In addition to what has already been indicated I wanted to elaborate more about logic behind viewDidUnload . One of the most important reasons for implementing it is that UIViewController subclasses commonly also contain owning references to various subviews in the view hierarchy. These properties could..
Declaration/definition of variables locations in ObjectiveC? http://stackoverflow.com/questions/12632285/declaration-definition-of-variables-locations-in-objectivec MyClass NSObject @property nonatomic int myVar @end MyClass.m @implementation MyClass @end This will work exactly as the code above. For compatibility reasons you can still declare ivars in the header. But because the only reason why you would want to do that and not declare a property is to create a private variable..
Use CoreData or SQLite on iPhone? [closed] http://stackoverflow.com/questions/1318467/use-coredata-or-sqlite-on-iphone Since CoreData has become available for the iPhone in OS 3.0 is it meant to be the answer to data persistence and replace all need for direct SQLite What reasons exist to still use SQLite What are advantages disadvantages of SQLite vs. CoreData iphone ios sqlite core data share improve this question This is a common..
iOS crash reports: atos not working as expected http://stackoverflow.com/questions/13574933/ios-crash-reports-atos-not-working-as-expected
Programmatically get own phone number in iOS http://stackoverflow.com/questions/193182/programmatically-get-own-phone-number-in-ios first response violates the latest SDK Agreement as of Nov 5 2009. Our application was just rejected for using it. Here's the response from Apple For security reasons iPhone OS restricts an application including its preferences and data to a unique location in the file system. This restriction is part of the security feature..
Adding Core Data to existing iPhone project http://stackoverflow.com/questions/2032818/adding-core-data-to-existing-iphone-project If it is not possible to recover from the error display an alert panel that instructs the user to quit the application by pressing the Home button. Typical reasons for an error here include The persistent store is not accessible The schema for the persistent store is incompatible with current managed object model Check the..
iPhone ivar naming convention [duplicate] http://stackoverflow.com/questions/2114587/iphone-ivar-naming-convention avoid conflict with incoming parameter names. Even in Apple sample code the use is mixed. However I greatly prefer to not use the _ prefix and have two strong reasons 1 Some people think the _ is a good indicator of private . My take is that NO class local variable should be accessed without a setter getter property and thus..
What's the best way to find the user's Documents directory on an iPhone? http://stackoverflow.com/questions/272544/whats-the-best-way-to-find-the-users-documents-directory-on-an-iphone to the normal Mac way of doing it which would be NSSearchPathForDirectoriesInDomains NSDocumentsDirectory NSUserDomainMask YES Are there any particular reasons to use one over the other iphone objective c cocoa touch share improve this question NSSearchPathForDirectoriesInDomains NSDocumentDirectory NSUserDomainMask..
http://stackoverflow.com/questions/37464/iphone-app-minus-app-store going through the app store It doesn't matter if the iPhone has to be jailbroken as long as I can still run an application created using the official SDK. For reasons I won't get into I can't have this program going through the app store. Thanks for any help you can give iphone ios app store appstore approval share improve..
A html5 web app for mobile safari to upload images from the Photos.app? http://stackoverflow.com/questions/3891831/a-html5-web-app-for-mobile-safari-to-upload-images-from-the-photos-app avatar via a web app. iphone html5 file upload ios mobile safari share improve this question I hate this word but it's impossible up now . Here is the reasons 1 mobile safari doesn't support upload anything. 2 mobile safari can't access ios components actually it can but only through phonegap UPDATE iOs 6 Safari is going..
http://stackoverflow.com/questions/402/iphone-app-in-landscape-mode below 4.0 so the question is now only a historic curiosity. It's incredible how much trouble that caused so many developers for so long Purely for historical reasons here is the original discussion and solution to repeat this is totally irrelevant now It is EXTREMELY DIFFICULT to make this work fully properly there are at least..
Is there a way to make drawRect work right NOW? http://stackoverflow.com/questions/4739748/is-there-a-way-to-make-drawrect-work-right-now at any time. but still the bizarre progressive slow down problem So the overwhelming thing is this weird progressive slow down on each iteration for unknown reasons the time taken for a loop deceases. Note that this applies to both doing it properly background look or using one of the 'immediate' methods. Practical solutions..
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 leak memory during ObjC or C exception throws in ObjC code but this is at the cost of both time and space performance. This is yet another in a long list of reasons to minimize your use of ObjC . ARC will not work at all on iPhoneOS 3 or Mac OS X 10.5 or earlier. This precludes me from using ARC in many projects. __weak pointers..
When should I release objects in -(void)viewDidUnload rather than in -dealloc? http://stackoverflow.com/questions/1158788/when-should-i-release-objects-in-voidviewdidunload-rather-than-in-dealloc has already been indicated I wanted to elaborate more about logic behind viewDidUnload . One of the most important reasons for implementing it is that UIViewController subclasses commonly also contain owning references to various subviews in the..
Declaration/definition of variables locations in ObjectiveC? http://stackoverflow.com/questions/12632285/declaration-definition-of-variables-locations-in-objectivec int myVar @end MyClass.m @implementation MyClass @end This will work exactly as the code above. For compatibility reasons you can still declare ivars in the header. But because the only reason why you would want to do that and not declare a property..
Use CoreData or SQLite on iPhone? [closed] http://stackoverflow.com/questions/1318467/use-coredata-or-sqlite-on-iphone for the iPhone in OS 3.0 is it meant to be the answer to data persistence and replace all need for direct SQLite What reasons exist to still use SQLite What are advantages disadvantages of SQLite vs. CoreData iphone ios sqlite core data share..
iOS crash reports: atos not working as expected http://stackoverflow.com/questions/13574933/ios-crash-reports-atos-not-working-as-expected
Programmatically get own phone number in iOS http://stackoverflow.com/questions/193182/programmatically-get-own-phone-number-in-ios as of Nov 5 2009. Our application was just rejected for using it. Here's the response from Apple For security reasons iPhone OS restricts an application including its preferences and data to a unique location in the file system. This restriction..
Adding Core Data to existing iPhone project http://stackoverflow.com/questions/2032818/adding-core-data-to-existing-iphone-project the error display an alert panel that instructs the user to quit the application by pressing the Home button. Typical reasons for an error here include The persistent store is not accessible The schema for the persistent store is incompatible with..
iPhone ivar naming convention [duplicate] http://stackoverflow.com/questions/2114587/iphone-ivar-naming-convention Even in Apple sample code the use is mixed. However I greatly prefer to not use the _ prefix and have two strong reasons 1 Some people think the _ is a good indicator of private . My take is that NO class local variable should be accessed without..
How to search MKMapView with UISearchBar? http://stackoverflow.com/questions/2281798/how-to-search-mkmapview-with-uisearchbar was mentioned before the best thing to do is to use the Google Maps API it supports a lot of formats but for several reasons I chose to go with JSON. So here are the steps to perform a JSON query to Google Maps and obtain the coordinate of the query...
What's the best way to find the user's Documents directory on an iPhone? http://stackoverflow.com/questions/272544/whats-the-best-way-to-find-the-users-documents-directory-on-an-iphone which would be NSSearchPathForDirectoriesInDomains NSDocumentsDirectory NSUserDomainMask YES Are there any particular reasons to use one over the other iphone objective c cocoa touch share improve this question NSSearchPathForDirectoriesInDomains..
NSThread vs. NSOperationQueue vs. ??? on the iPhone http://stackoverflow.com/questions/3041837/nsthread-vs-nsoperationqueue-vs-on-the-iphone dispatch share improve this question In general you'll get better mileage with NSOperationQueue . Three specific reasons You may want to initiate caching of many items at once. NSOperationQueue is smart enough to only create about as many threads..
Check for private API “usage” yourself? http://stackoverflow.com/questions/3546046/check-for-private-api-usage-yourself Apple forbids using private or undocumented APIs in iOS apps. I have no problem with this as there are sound technical reasons for why this is a good idea. However twice now I've had an app rejected for using private APIs when this was not actually..
http://stackoverflow.com/questions/37464/iphone-app-minus-app-store if the iPhone has to be jailbroken as long as I can still run an application created using the official SDK. For reasons I won't get into I can't have this program going through the app store. Thanks for any help you can give iphone ios app..
A html5 web app for mobile safari to upload images from the Photos.app? http://stackoverflow.com/questions/3891831/a-html5-web-app-for-mobile-safari-to-upload-images-from-the-photos-app upload ios mobile safari share improve this question I hate this word but it's impossible up now . Here is the reasons 1 mobile safari doesn't support upload anything. 2 mobile safari can't access ios components actually it can but only through..
http://stackoverflow.com/questions/402/iphone-app-in-landscape-mode historic curiosity. It's incredible how much trouble that caused so many developers for so long Purely for historical reasons here is the original discussion and solution to repeat this is totally irrelevant now It is EXTREMELY DIFFICULT to make..
Is there a way to make drawRect work right NOW? http://stackoverflow.com/questions/4739748/is-there-a-way-to-make-drawrect-work-right-now slow down problem So the overwhelming thing is this weird progressive slow down on each iteration for unknown reasons the time taken for a loop deceases. Note that this applies to both doing it properly background look or using one of the..
How to apply “filters” to AVCaptureVideoPreviewLayer http://stackoverflow.com/questions/5156872/how-to-apply-filters-to-avcapturevideopreviewlayer video frames in a buffer applying the desired transformations then displaying each frame as an UIImage. For several reasons this seems like overkill for my project and I'd like to avoid any performance issues this may cause. Is this the only way..
What does @synthesize window=_window do? http://stackoverflow.com/questions/5170631/what-does-synthesize-window-window-do use @synthesize you don't need to have a backing variable at all. As for why people do this everyone has different reasons. Personally I do it to avoid clashes with variable names and make it clear when I'm using a local variable and when I'm..
Is it possible to reference a variable with a string and an int? http://stackoverflow.com/questions/6049175/is-it-possible-to-reference-a-variable-with-a-string-and-an-int gives me warnings and does not work how could this be done. I also tried this but it doesnt work for quite obvious reasons int j 1 NSString refString NSString stringWithFormat @ number i j refString 3 Im really struggling with this I know how..
Why am I having to manually set my view's frame in viewDidLoad? http://stackoverflow.com/questions/6757018/why-am-i-having-to-manually-set-my-views-frame-in-viewdidload is your one and only opportunity. Just remember that this size may change after the view appears for various reasons including rotation events or changes in status bar height. For this reason it's important to give every subview an appropriate..
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 throws in ObjC code but this is at the cost of both time and space performance. This is yet another in a long list of reasons to minimize your use of ObjC . ARC will not work at all on iPhoneOS 3 or Mac OS X 10.5 or earlier. This precludes me from..
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