2014/10/15 下午 10:08:17

iphone Programming Glossary: ensure

http://stackoverflow.com/questions/1077810/delete-reset-all-entries-in-core-data

NSFileManager defaultManager removeItemAtPath storeURL.path error error Then just add the persistent store back to ensure it is recreated properly. The programmatic way for iterating through each entity is both slower and prone to error. The..

How to detect iPhone 5 (widescreen devices)?

http://stackoverflow.com/questions/12446990/how-to-detect-iphone-5-widescreen-devices

isEqualToString @ iPhone #define IS_IPOD UIDevice currentDevice model isEqualToString @ iPod touch This way we can ensure we have an iPhone model AND a widescreen and we can redefine the IS_IPHONE_5 macro #define IS_IPHONE_5 IS_IPHONE IS_WIDESCREEN..

What does the Tiler Utilization statistic mean in the iPhone OpenGL ES instrument?

http://stackoverflow.com/questions/1287811/what-does-the-tiler-utilization-statistic-mean-in-the-iphone-opengl-es-instrumen

will outweigh the extra per draw call CPU overhead. Note that it 䏭 generally beneficial on MBX and elsewhere to ensure that each vertex attribute begins on a 32 bit boundary which implies that you should pad your positions and normals out..

motionBegan: Not Working

http://stackoverflow.com/questions/1342674/motionbegan-not-working

becomeFirstResponder If the view contains any element such as a UITextField that might become first responder itself ensure that element resigns first responder at some point. With a UITextField for example the UIViewController would need to implement..

CGImage/UIImage lazily loading on UI thread causes stutter

http://stackoverflow.com/questions/1815476/cgimage-uiimage-lazily-loading-on-ui-thread-causes-stutter

displays a horizontal scrolling surface tiled with UIImageViews from left to right. Code runs on the UI thread to ensure that newly visible UIImageViews have a freshly loaded UIImage assigned to them. The loading happens on a background thread...

http://stackoverflow.com/questions/18736954/missing-recommended-icon-file-the-bundle-does-not-contain-an-app-icon-for-iph

Universal iPhone/iPad application debug compilation error for iPhone testing

http://stackoverflow.com/questions/2618889/universal-iphone-ipad-application-debug-compilation-error-for-iphone-testing

argc argv nil @ AppDelegate_Phone From that point forth they use different AppDelegates and I've checked my headers to ensure the UISplitView is never used nor imported via the Phone logic. How do I avoid this error and is there a better way to split..

Why is NSUserDefaults not saving my values?

http://stackoverflow.com/questions/2622754/why-is-nsuserdefaults-not-saving-my-values

home button. Manually calling NSUserDefaults standardUserDefaults synchronize in applicationDidEnterBackground should ensure that your User Defaults are saved correctly this should really be a built in behaviour IMO . share improve this answer..

Add UIView Above All Other Views, Including StatusBar

http://stackoverflow.com/questions/2666792/add-uiview-above-all-other-views-including-statusbar

towards the best way tackle this problem that gives me full control Oh and I know blocking input is not great but I do ensure it's for a short period of time and it has the benefit of making it clear to the user that their action which must complete..

How to Deal with Temporary NSManagedObject instances?

http://stackoverflow.com/questions/3256195/how-to-deal-with-temporary-nsmanagedobject-instances

the same coordinator and I'm placing temporary objects there by using assignObject toPersistentStore. Now how do I ensure that these temporary objects don't get to the data which I fetch from the common to both stores context Or do I have to..

Adding devices to team provisioning profile

http://stackoverflow.com/questions/3578158/adding-devices-to-team-provisioning-profile

developer.apple.com Add the UDID in devices Go back to XCode open up the Organizer and select Provisioning Profiles ensure that Automatic Device Provisioning is checked on the top right pane then click on the Refresh button and magically all your..

Which open source licenses are compatible with the Apple's iPhone and its official App Store ? [closed]

http://stackoverflow.com/questions/459833/which-open-source-licenses-are-compatible-with-the-apples-iphone-and-its-offici

or device that requires extra payments to deploy is in conflict with the LGPL. Distribution of Object Files You must ensure that the terms of the resulting executable allow the recipient to make changes to the LGPL code and produce a new working..

Can use AVCaptureVideoDataOutput and AVCaptureMovieFileOutput at the same time?

http://stackoverflow.com/questions/4944083/can-use-avcapturevideodataoutput-and-avcapturemoviefileoutput-at-the-same-time

code looks more or less like with the bits you're having no problems with skimmed over and ignoring issues of scope to ensure I'm given incoming CMSampleBuffers AVCaptureSession captureSession alloc and init set your preferred preset etc AVCaptureDevice..

What are the Dangers of Method Swizzling in Objective C?

http://stackoverflow.com/questions/5339276/what-are-the-dangers-of-method-swizzling-in-objective-c

setFrame with @selector my_viewSetFrame What happens when the method on NSButton is swizzled Well most swizzling will ensure that it's not replacing the implementation of setFrame for all views so it will pull up the instance method. This will use.. the control's swizzled implementation of setFrame . This is a bit confusing but this is the correct order. How can we ensure this order of things Again just use load to swizzle things. If you swizzle in load and you only make changes to the class..

iPhone different between self and normal variable

http://stackoverflow.com/questions/536388/iphone-different-between-self-and-normal-variable

as stated above is saying that you want to use the accessors a good thing if you are setting strings and want to ensure the retain count is correct for example . So within your class implementation self.bill fred will call the accessor setBill...

Difference between protocol and delegates?

http://stackoverflow.com/questions/5431413/difference-between-protocol-and-delegates

classes because it makes it really easy to exchange one delegate instance for another all the programmer has to do is ensure that the replacement instance or class conforms to the necessary protocol i.e. it implements the methods specified in the..

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

changes in status bar height. For this reason it's important to give every subview an appropriate autoresizingMask to ensure that the layout can adjust itself properly for any change in bounds. If you wish to build your view hierarchy manually the..

Secure https encryption for iPhone app to webpage

http://stackoverflow.com/questions/9181186/secure-https-encryption-for-iphone-app-to-webpage

in the application then it will be possible to reverse engineer that credential. Ultimately it is impossible to ensure that a client running on another machine is your client. There have been many discussions of this. It is not hopeless only..

Programatically set the initial view controller using Storyboards

http://stackoverflow.com/questions/10428629/programatically-set-the-initial-view-controller-using-storyboards

launch. iphone xcode ios5 storyboard share improve this question How to without a dummy initial view controller Ensure all initial view controllers have a Storyboard ID. In the storyboard uncheck the Is initial View Controller attribute from..

lexical or preprocessor issue file not found occurs while archiving?

http://stackoverflow.com/questions/10925539/lexical-or-preprocessor-issue-file-not-found-occurs-while-archiving

in table view.Can any tell me what is the issue iphone xcode4.3 share improve this question Few things to try Ensure the Framework and all it's headers are imported into your project properly. Also in your Build Settings set YES to Always..

Ensure User has entered email address string in correct format?

http://stackoverflow.com/questions/11094658/ensure-user-has-entered-email-address-string-in-correct-format

User has entered email address string in correct format i have a text field in Contact screen and the user need to enter..

Modal box on iPhone no scroll

http://stackoverflow.com/questions/12067802/modal-box-on-iphone-no-scroll

max height of the modal adjusted later position fixed Display modal in the centre of your screen overflow y scroll Ensure that the modal is scroll able webkit overflow scrolling touch Avoid having to use 2 finger scroll on iOS .modal.fade.in..

UITableView registerNib:forCellReuseIdentifier:

http://stackoverflow.com/questions/12590471/uitableview-registernibforcellreuseidentifier

and won't be part of the top level objects returned by instantiateWithOwner options . If it still doesn't work Ensure that you correctly filled the reuseIdentifier of your UITableViewCell in IB in the Object Inspector pane on the right once..

UITableView delegate methods [closed]

http://stackoverflow.com/questions/13156927/uitableview-delegate-methods

reuseIdentifier MyIdentifier autorelease Here we use the provided setImageWithURL method to load the web image Ensure you use a placeholder image otherwise cells will be initialized with no image cell.imageView setImageWithURL NSURL URLWithString..

When would CBCentralManager's state ever be powered on but still give me a “not powered on” warning?

http://stackoverflow.com/questions/17118534/when-would-cbcentralmanagers-state-ever-be-powered-on-but-still-give-me-a-not

any centralManager calls. You're most likely calling scan or retrieve before the central has had a chance to update. Ensure you only call methods after you know it's on. You will not get the error if you wrap each call in if statements that check..

How can I make my ad hoc iPhone application's icon show up in iTunes?

http://stackoverflow.com/questions/173247/how-can-i-make-my-ad-hoc-iphone-applications-icon-show-up-in-itunes

built it it will break the app signing and you will get a verification error when trying to sync it to your device. Ensure that the artwork file is included in the Copy Bundle Resources folder within your project's target in XCode step 4 above..

How do you update the app icons and launch images to support IOS 6 and 7 simultaneously?

http://stackoverflow.com/questions/18624587/how-do-you-update-the-app-icons-and-launch-images-to-support-ios-6-and-7-simulta

deployment target Xcode5 nicely changes the list of default assets it requires to support the multiple OS versions. Ensure you reupload the correct versions of icons at the required resolutions and required filenames shown below for IOS6 IOS7..

UIImagePicker get error: Snapshotting a view that has not been rendered results in an empty snapshot in iOS7

http://stackoverflow.com/questions/18890003/uiimagepicker-get-error-snapshotting-a-view-that-has-not-been-rendered-results

memory warning when opening the camera. Snapshotting a view that has not been rendered results in an empty snapshot. Ensure your view has been rendered at least once before snapshotting or snapshot after screen updates. Here is what I am doing...

Symbolicate adhoc iphone app crashes

http://stackoverflow.com/questions/2697067/symbolicate-adhoc-iphone-app-crashes

you'll have to expand any settings that aren't already expanded to allow you to set it on a per configuration basis. Ensure these values are set for the Release configuration Generate Debug Symbols Yes Debug Information Format DWARF with dSYM File..

Understanding the memory consumption on iPhone

http://stackoverflow.com/questions/363493/understanding-the-memory-consumption-on-iphone

that knowledge here is what I would do Check that you're not leaking memory this will obviously cause this problem. Ensure your'e not accessing autoreleased memory common cause of crashes. Create a separate test app and play with loading textures..

Is it possible to get information about all apps installed on iPhone?

http://stackoverflow.com/questions/3878197/is-it-possible-to-get-information-about-all-apps-installed-on-iphone

not broken return NO break BOOL isDir NO if NSFileManager defaultManager fileExistsAtPath path isDirectory isDir isDir Ensure that file exists cacheDict NSDictionary dictionaryWithContentsOfFile path if cacheDict If cache is loaded then break the..

Popover inside a popover

http://stackoverflow.com/questions/5114476/popover-inside-a-popover

of getting my app rejected iphone ipad hig share improve this question From the iOS Human Interface Guidelines Ensure that only one popover is visible onscreen at a time. You should not display more than one popover or custom view designed..

iPhone SDK Internet connection detection

http://stackoverflow.com/questions/596589/iphone-sdk-internet-connection-detection

network access the easiest way is to add the following settings to your info.plist as boolean values. SBUsesNetwork Ensure the device has an active connection Edit not applicable this seems to be a private API someone found at some point. It is.. be a private API someone found at some point. It is not in Apple's developer documentation. UIRequiresPersistentWiFi Ensures the device is connected via WiFi If your choice is not true then the user will be presented with an appropriate message..

Crash when adding persistent store (iCloud enabled) in app delegate

http://stackoverflow.com/questions/8021753/crash-when-adding-persistent-store-icloud-enabled-in-app-delegate

you changed information regarding provisioning profiles it will complain otherwise and refuse to run on the device . Ensure that the new profile is on the devices you wish to install the app on then build and run. Everything should work just fine..

RestKit Object Mapping Relationships without KVC

http://stackoverflow.com/questions/9318565/restkit-object-mapping-relationships-without-kvc

objectMapping mapRelationship @ company withMapping companyMapping Map the companyID attribute onto your Contact model Ensure that you have the primaryKeyAttribute configured on both classes Instruct RestKit to hydrate the relationship objectMapping..

Getting info about bad memory address in LLDB

http://stackoverflow.com/questions/9853100/getting-info-about-bad-memory-address-in-lldb

a rectangle with a point on the right side Press the ' ' button at the bottom left and add an 'Exception Breakpoint'. Ensure you break 'On Throw' for 'All' exceptions. Now you should get a full backtrace immediately prior to this exception occurring...