2014/10/15 下午 10:04:54
iphone Programming Glossary: carefulhttp://stackoverflow.com/questions/18736954/missing-recommended-icon-file-the-bundle-does-not-contain-an-app-icon-for-iph app binary into the App Store . I hope now you can submit your app without any icon issue. NOTE Be careful to provide all the icons you need. Otherwise your app will not pass Apple validation. If you 脎e received..
JSON and Core Data on the iPhone http://stackoverflow.com/questions/2362323/json-and-core-data-on-the-iphone this is recursive so you can easily end up translating your entire persistent store if you are not careful. Watch your relationships and make sure that they only go down the object tree so that you only get..
Popover with embedded navigation controller doesn't respect size on back nav http://stackoverflow.com/questions/2752394/popover-with-embedded-navigation-controller-doesnt-respect-size-on-back-nav You have to reset the size of currentSetSizeForPopover in viewDidAppear. But you have to be careful when you will set the same size as was already set in field currentSetSizeForPopover then the popover..
Converting NSString to NSDate (and back again) http://stackoverflow.com/questions/3917250/converting-nsstring-to-nsdate-and-back-again format to match our input string if format doesn't match you'll get nil from your string so be careful dateFormatter setDateFormat @ dd MM yyyy NSDate dateFromString NSDate alloc init voila dateFromString..
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 NSDate date This is a truly amazing piece of engineering. Of course one should be extremely careful when manipulating the run loop and as many pointed out this approach is strictly for experts. The Bizarre..
AES interoperability between .Net and iPhone? http://stackoverflow.com/questions/538435/aes-interoperability-between-net-and-iphone IV iv . Essentially openssl .Net and the iPhone are using the same encryption you just need to be careful how you initialize the APIs with the encryption key and the initialization vector. share improve this..
Make movie file with picture Array and song file, using AVAsset http://stackoverflow.com/questions/6061092/make-movie-file-with-picture-array-and-song-file-using-avasset with a picture array and an audio file. So if you want do the same thing I put my code here be careful to memory First make a movie file with your picture array use zoul's post here void writeImagesToMovieAtPath..
http://stackoverflow.com/questions/18736954/missing-recommended-icon-file-the-bundle-does-not-contain-an-app-icon-for-iph and distribute your project as we did for submission of the app binary into the App Store . I hope now you can submit your app without any icon issue. NOTE Be careful to provide all the icons you need. Otherwise your app will not pass Apple validation. If you 脎e received this kind of email Invalid Image For iOS applications icons..
JSON and Core Data on the iPhone http://stackoverflow.com/questions/2362323/json-and-core-data-on-the-iphone moc return objectArray autorelease Now this is recursive so you can easily end up translating your entire persistent store if you are not careful. Watch your relationships and make sure that they only go down the object tree so that you only get the objects you want translated. share improve this answer..
Popover with embedded navigation controller doesn't respect size on back nav http://stackoverflow.com/questions/2752394/popover-with-embedded-navigation-controller-doesnt-respect-size-on-back-nav about the size though A solution for all that pain is as follows You have to reset the size of currentSetSizeForPopover in viewDidAppear. But you have to be careful when you will set the same size as was already set in field currentSetSizeForPopover then the popover will not change the size. For this to happen you can firstly..
Converting NSString to NSDate (and back again) http://stackoverflow.com/questions/3917250/converting-nsstring-to-nsdate-and-back-again alloc init this is imporant we set our input date format to match our input string if format doesn't match you'll get nil from your string so be careful dateFormatter setDateFormat @ dd MM yyyy NSDate dateFromString NSDate alloc init voila dateFromString dateFormatter dateFromString dateString dateFormatter release..
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 NSRunLoop currentRunLoop runMode NSDefaultRunLoopMode beforeDate NSDate date This is a truly amazing piece of engineering. Of course one should be extremely careful when manipulating the run loop and as many pointed out this approach is strictly for experts. The Bizarre Problem That Arises................................................
AES interoperability between .Net and iPhone? http://stackoverflow.com/questions/538435/aes-interoperability-between-net-and-iphone
Make movie file with picture Array and song file, using AVAsset http://stackoverflow.com/questions/6061092/make-movie-file-with-picture-array-and-song-file-using-avasset share improve this question I finally found how make movie with a picture array and an audio file. So if you want do the same thing I put my code here be careful to memory First make a movie file with your picture array use zoul's post here void writeImagesToMovieAtPath NSString path withSize CGSize size NSString documentsDirectoryPath..
What do I have to do to get Core Data to automatically migrate models? http://stackoverflow.com/questions/1018155/what-do-i-have-to-do-to-get-core-data-to-automatically-migrate-models upgrade that model to the new model. This seems great and as simple as I wanted but I think you need to be careful during development as you change a model otherwise you will have to create a new version for each change. I think what I..
Optimizing CLLocationManager/CoreLocation to retrieve data points faster on the iPhone http://stackoverflow.com/questions/1081219/optimizing-cllocationmanager-corelocation-to-retrieve-data-points-faster-on-the object's they'll conflict and you get errors from the GPS location manager stating it can't update. 2 Be extremely careful how you update the locationManager.desiredAccuracy and locationManager.distanceFilter Follow the example in Apple's code..
How to export data to a csv file with iPhone SDK 3.0? http://stackoverflow.com/questions/1159576/how-to-export-data-to-a-csv-file-with-iphone-sdk-3-0 a CSV append the output of one array for the column names to one array for the values etc . Of course you have to be careful to put quotes around values that already contain a comma and to then escape any quotes in the value. share improve this..
http://stackoverflow.com/questions/18736954/missing-recommended-icon-file-the-bundle-does-not-contain-an-app-icon-for-iph submission of the app binary into the App Store . I hope now you can submit your app without any icon issue. NOTE Be careful to provide all the icons you need. Otherwise your app will not pass Apple validation. If you 脎e received this kind of email..
JSON and Core Data on the iPhone http://stackoverflow.com/questions/2362323/json-and-core-data-on-the-iphone autorelease Now this is recursive so you can easily end up translating your entire persistent store if you are not careful. Watch your relationships and make sure that they only go down the object tree so that you only get the objects you want..
Popover with embedded navigation controller doesn't respect size on back nav http://stackoverflow.com/questions/2752394/popover-with-embedded-navigation-controller-doesnt-respect-size-on-back-nav that pain is as follows You have to reset the size of currentSetSizeForPopover in viewDidAppear. But you have to be careful when you will set the same size as was already set in field currentSetSizeForPopover then the popover will not change the..
Converting NSString to NSDate (and back again) http://stackoverflow.com/questions/3917250/converting-nsstring-to-nsdate-and-back-again we set our input date format to match our input string if format doesn't match you'll get nil from your string so be careful dateFormatter setDateFormat @ dd MM yyyy NSDate dateFromString NSDate alloc init voila dateFromString dateFormatter dateFromString..
Getting displacement from accelerometer data with Core Motion http://stackoverflow.com/questions/4449565/getting-displacement-from-accelerometer-data-with-core-motion store the first integration's result velocity because you will need it in a later stage for optimisation. Do it very careful because every tiny bug will lead to huge errors after short period of time. Always bear in mind that even a very small error..
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 beforeDate NSDate date This is a truly amazing piece of engineering. Of course one should be extremely careful when manipulating the run loop and as many pointed out this approach is strictly for experts. The Bizarre Problem That Arises................................................
Animation in OpenGL ES view freezes when UIScrollView is dragged on iPhone http://stackoverflow.com/questions/4876488/animation-in-opengl-es-view-freezes-when-uiscrollview-is-dragged-on-iphone modes. Spending too much time interrupting UIKit can lead to some very poor control responsiveness so you need to be careful. It'd be to diverge from the topic massively but although OpenGL is modal and therefore not particularly threading friendly..
Invoke native date picker from web-app on iOS/Android http://stackoverflow.com/questions/4946919/invoke-native-date-picker-from-web-app-on-ios-android share improve this question Nowadays some devices support input type date but others don't so one needs to be careful One can detect if type date is supported by setting that attribute and then reading back its value. Browsers devices that..
How to make ui responsive all the time and do background updating? http://stackoverflow.com/questions/5133731/how-to-make-ui-responsive-all-the-time-and-do-background-updating have to support iOS3 performSelectorInBackground performSelectorOnMainThread or NSOperationQueue are helpful. And be careful almost UIKit classes are not thread safe except drawing to a graphics context. For example UIScrollView is not thread safe..
AES interoperability between .Net and iPhone? http://stackoverflow.com/questions/538435/aes-interoperability-between-net-and-iphone
Can you use cancel/isCancelled with GCD/dispatch_async? http://stackoverflow.com/questions/5449469/can-you-use-cancel-iscancelled-with-gcd-dispatch-async go deeper and deeper while in the BG. Alternately do exactly what BJ shows in his example. If you use BJ's method be careful if you go deeper. Whatever method you use you must clean up any variables contexts memory you have open when you break out.. have with your implementation of the CHECKER macro is that it implements an unexpected return . As such you have to be careful about memory leaks. If you've set up your own NSAutoreleasePool on the background thread you need to drain it before returning...
Make movie file with picture Array and song file, using AVAsset http://stackoverflow.com/questions/6061092/make-movie-file-with-picture-array-and-song-file-using-avasset found how make movie with a picture array and an audio file. So if you want do the same thing I put my code here be careful to memory First make a movie file with your picture array use zoul's post here void writeImagesToMovieAtPath NSString path..
Retain Cycles: Why is that such a bad thing? http://stackoverflow.com/questions/791322/retain-cycles-why-is-that-such-a-bad-thing there are no references and so the object can be deleted. This usually takes care of itself and works ok without any careful thinking. If you've got a group of objects with no cycles and you drop your reference to the root object then it will be.. their reference counts never go to zero and they don't get deleted. This is a memory leak. Clearly you can do some careful management and break the cycles before you drop your reference to a group of objects you don't want any more. But... as.. cycles before you drop your reference to a group of objects you don't want any more. But... as I just said this takes careful management. It's very easy to get wrong. This is one of the main reasons that memory leaks occur. To avoid the risk of leaks..
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