2014/10/15 下午 10:12:33

iphone Programming Glossary: persist

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

store error error 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.. entities and not others. However you still need to make sure you retain referential integrity or you won't be able to persist your changes. Just removing the store and recreating it is both fast and safe and can certainly be done programatically..

Core Data: Quickest way to delete all instances of an entity

http://stackoverflow.com/questions/1383598/core-data-quickest-way-to-delete-all-instances-of-an-entity

Data Quickest way to delete all instances of an entity I'm using Core Data to locally persist results from a Web Services call. The web service returns the full object model for let's say Cars could be about 2000 of.. Service return anything less than 1 or ALL cars. The next time I open my application I want to refresh the Core Data persisted copy by calling the Web Service for all Cars again however to prevent duplicates I would need to purge all data in the..

Do NSUserDefaults persist through an Update to an app in the Appstore?

http://stackoverflow.com/questions/1638766/do-nsuserdefaults-persist-through-an-update-to-an-app-in-the-appstore

NSUserDefaults persist through an Update to an app in the Appstore Is this the case Do NSUserDefaults get reset when you submit an update to an..

Write to a File in Monotouch

http://stackoverflow.com/questions/1829954/write-to-a-file-in-monotouch

to a File in Monotouch How would I create and write to a file in a Monotouch iPhone app The file should persist between application launches so I guess it has to be placed somewhere in the App bundle documents or resources . c# .net.. and you can see the folder structure your app will have access to on the phone. For storing files that you'd like persisted across app sessions your app's Documents folder is the spot. It's not your only choice for creating files but it's the..

Any way to pre populate core data?

http://stackoverflow.com/questions/2230354/any-way-to-pre-populate-core-data

Is there any way to do this Any help is appreciated. Thanks in advance. iphone uitableview core data uitableviewcell persist share improve this question Here's the best way and doesn't require SQL knowledge Create a quick Core Data iPhone app..

Adding C++ Object to Objective-C Class

http://stackoverflow.com/questions/2262011/adding-c-object-to-objective-c-class

but would like to have a single interface class between the Objective C and C code. Therefore I would like to have a persistent C object in the ViewController interface. This fails by forbidding the declaration of 'myCppFile' with no type #import.. cppobject @end However this works just fine in the .mm implementation file It doesn't work because I want cppobject to persist between calls #import myCppFile.h @implementation GLViewController void drawView UIView theView myCppFile cppobject cppobject.draw..

Persisting Dates to SQLite3 in an iPhone Application

http://stackoverflow.com/questions/251155/persisting-dates-to-sqlite3-in-an-iphone-application

Dates to SQLite3 in an iPhone Application I am developing an iPhone application that persists data to a SQLite3 database. For each row I persist I wish to include a 'created date' and a 'last modified date' My question.. an iPhone Application I am developing an iPhone application that persists data to a SQLite3 database. For each row I persist I wish to include a 'created date' and a 'last modified date' My question is what is the recommend approach for storing..

How to fetch distinct values in Core Data?

http://stackoverflow.com/questions/2785844/how-to-fetch-distinct-values-in-core-data

iphone keychain items persist after application uninstall?

http://stackoverflow.com/questions/3671499/iphone-keychain-items-persist-after-application-uninstall

keychain items persist after application uninstall I am playing with idandersen's scifihifi iphone code for keychain and came across the following..

How should I architect my iPhone app to talk to my website?

http://stackoverflow.com/questions/3943597/how-should-i-architect-my-iphone-app-to-talk-to-my-website

parsing fails. That's when dedicated class for parsing comes handy. If your dataset is not huge if you do not need to persist downloaded data on iPhone forever you probably don't need to store them in SQLite database you can simply store them in..

Finding image type from NSData or UIImage

http://stackoverflow.com/questions/4147311/finding-image-type-from-nsdata-or-uiimage

URL . I can take the data from this in the form of NSData and load it into a UIImage and display it fine. I want to persist this data to a file. However I don't know what format the data is in PNG JPG BMP I assume it is JPG since it's an image.. and at the documentation and haven't been able to find anything. TIA. Edit Do I really need the file extension I'm persisting it to an external storage Amazon S3 but considering that it will always be used in the context of iOS or a browser both.. whom seem fine in interpreting the data without an extension perhaps this is a non issue. iphone ios uiimage nsdata persist share improve this question If you have NSData for the image file then you can guess at the content type by looking..

How to fix jQuery Mobile's fixed footer?

http://stackoverflow.com/questions/4377062/how-to-fix-jquery-mobiles-fixed-footer

fixed footer Using jQueryMobile I've included data role footer data position fixed in the markup but two bugs persist Footer toggles on a null click event. Footer isn't fixed and hides some of the page content. I'm testing with iPhone 3g...

Creating a JSON Store For iPhone

http://stackoverflow.com/questions/5237943/creating-a-json-store-for-iphone

and then use a mapper to import the JSON into it. It's seems like such a song and dance. I think I just want to persist the JSON somewhere easy and have the ability to query it. MongoDB would be fine if it ran on iPhone. Is there a JSON document.. document store on the iPhone that supports querying Or can I use some JSON parser to convert the data to some kind of persistent NSDictionary and query that using predicates Or perhaps use SQLite as a BLOB store with manually created indexes on the.. indexes on the JSON structures Or should I stop whining and use Core Data Help appreciated. iphone json core data persistence store share improve this question When deciding what persistence to use it's important to remember that Core Data..

How to Maintain VOIP socket connection in background?

http://stackoverflow.com/questions/5987495/how-to-maintain-voip-socket-connection-in-background

VOIP background capability of iPhone to maintain socket connection. 1. I have configured a stream for VOIP in order to persist socket connection to run in background so what Timeout value should I set Will the socket connection terminates once the..

Should I use NSUserDefaults or a plist to store data?

http://stackoverflow.com/questions/7058858/should-i-use-nsuserdefaults-or-a-plist-to-store-data

down below. Core Data I think it's way too much overkill it's just strings. It's supposed to be used when you want to persist more complex objects. NSUserDefaults It's pretty fast and easy to do though it's supposed to store only user settings. To..

Core Data vs. SQLite for SQL experienced developers

http://stackoverflow.com/questions/840634/core-data-vs-sqlite-for-sql-experienced-developers

of the existing back end database. We will be loading data from a remote site and storing it locally where it will persist and need to be . We only update it if it has changed which will be every month or two. We will most likely use XML or JSON.. question As you've read http stackoverflow.com questions 523482 core data vs sqlite3 you know that Core Data and the persistence mechanism SQLite in this case are largely orthogonal. Core Data is really about managing an object graph and it's main.. from the existing desktop app then Core Data won't buy you much. A hybrid approach is possible you can do your own persistence querying and build a Core Data in memory store which you populate with the result of a query and use this in memory..

Does UIView's addSubview really retain the view?

http://stackoverflow.com/questions/937767/does-uiviews-addsubview-really-retain-the-view

added view controllers we do not have to back them with an ivar. But your reference to the navigation controller must persist beyond the scope of the method. or depending on your code it could be dealloc ed or have its reference lost. So you must..