2014/10/15 下午 10:13:15
iphone Programming Glossary: relationshipsWhat 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 the model it has and the model that exists on a device already are not the same. If you have only added attributes or relationships and similar simple changes then the model should be upgraded automatically. Any pointers do I need to set something in xCode..
Use CoreData or SQLite on iPhone? [closed] http://stackoverflow.com/questions/1318467/use-coredata-or-sqlite-on-iphone Core Data vs sqlite3 is it worth using core data for a simple sqlite app on the iphone with one table and no relationships or complicated subtable views In summary Core Data can greatly simplify your code particularly for complex object models...
How to correctly setup a NSPredicate for a to-many relationship when using Core Data? http://stackoverflow.com/questions/1347776/how-to-correctly-setup-a-nspredicate-for-a-to-many-relationship-when-using-core Here is what the Predicate Programming Guide says regarding the use of predicates in conjunction with to many relationships. Using Predicates with Relationships If you use a to many relationship the construction of a predicate is slightly different...
Can I encode a subclass of NSManagedObject? http://stackoverflow.com/questions/1371749/can-i-encode-a-subclass-of-nsmanagedobject . Don't forget to include the instance managedObjectID as an NSURL in the dictionary so that you can reconnect any relationships to the object on the other end. You'll have to recursively create these dictionaries for any targets of relationships for.. relationships to the object on the other end. You'll have to recursively create these dictionaries for any targets of relationships for the instance you're encoding. Then send the dict s across the wire and reconstitute them on the other end as instances..
Using custom sections with NSFetchedResultsController? http://stackoverflow.com/questions/1384345/using-custom-sections-with-nsfetchedresultscontroller some restrictions on what you can do but this is well explained in the documentation most notably you can not modify relationships or pass arguments however if you can compute you transient property using only the values of the other properties relationships.. or pass arguments however if you can compute you transient property using only the values of the other properties relationships it should be perfectly fine . Once you have done this you simply use the transient property as the attribute you pass to..
Why should I use Core Data for my iPhone app? http://stackoverflow.com/questions/1883879/why-should-i-use-core-data-for-my-iphone-app of the messy things you'd otherwise have to deal with yourself such as lists of objects one to many or many to many relationships or constraints on object attributes into a single nice clean object oriented interface. Core Data comes with a nice graphical..
JSON and Core Data on the iPhone http://stackoverflow.com/questions/2362323/json-and-core-data-on-the-iphone NSManagedObject managedObject NSDictionary attributesByName managedObject entity attributesByName NSDictionary relationshipsByName managedObject entity relationshipsByName NSMutableDictionary valuesDictionary managedObject dictionaryWithValuesForKeys.. attributesByName managedObject entity attributesByName NSDictionary relationshipsByName managedObject entity relationshipsByName NSMutableDictionary valuesDictionary managedObject dictionaryWithValuesForKeys attributesByName allKeys mutableCopy.. valuesDictionary setObject managedObject entity name forKey @ ManagedObjectName for NSString relationshipName in relationshipsByName allKeys NSRelationshipDescription description managedObject entity relationshipsByName objectForKey relationshipName..
iPhone: How to Pass Data Between Several Viewcontrollers in a Tabbar App http://stackoverflow.com/questions/2363777/iphone-how-to-pass-data-between-several-viewcontrollers-in-a-tabbar-app The data model object knows nothing about any views or view controllers. It just stores data and the logical relationships between that data. When different parts of the app need to write or read data they right and read to the data model. In..
Creating a JSON Store For iPhone http://stackoverflow.com/questions/5237943/creating-a-json-store-for-iphone can give superior performance. E.g. an old fashion library index card system. Each card is identical the cards have no relationships between themselves and the cards have no behaviors. SQL or other procedural DBs are very good at processing large amounts.. data grows more complex Core Data quickly becomes superior. The managed part of managed objects manages complexity in relationships and behaviors. With collections or SQL you have manually manage complexity and can find yourself quickly swamped. In fact..
UIModalTransitionStylePartialCurl with UITabBarController http://stackoverflow.com/questions/6873903/uimodaltransitionstylepartialcurl-with-uitabbarcontroller
Last In-First Out Stack with GCD? http://stackoverflow.com/questions/7567827/last-in-first-out-stack-with-gcd using an NSFetchedResultsController. I've discovered an NSFetchedResultsController can be used with many to many relationships despite what the official documentation appears to say. But I'm not using one in this context yet. Addition Just to note..
What are the advantages and disadvantages of using ARC? [closed] http://stackoverflow.com/questions/7888568/what-are-the-advantages-and-disadvantages-of-using-arc you cannot write nontrivial objc programs without understanding reference counting and object lifetimes and relationships whether MRC ARC or GC. ARC and GC simply remove the implementation from your sources and do the right thing in most cases..
What describes the Application Delegate best? How does it fit into the whole concept? http://stackoverflow.com/questions/828827/what-describes-the-application-delegate-best-how-does-it-fit-into-the-whole-con every class in my app has access to that App Delegate object Is there any good graph on the net that visualizes these relationships iphone cocoa touch uikit delegates share improve this question In Cocoa a delegate is an object that another object..
Does storyboard eliminate the need for .nib http://stackoverflow.com/questions/8495179/does-storyboard-eliminate-the-need-for-nib share improve this question I guess storyboard contains the .xib .nib files for all your views. It present relationships between them and helps you to avoid confusion if you have a LOT of views. Also it saves your time and nerves when writing..
RestKit Object Mapping Relationships without KVC http://stackoverflow.com/questions/9318565/restkit-object-mapping-relationships-without-kvc solution for it. Thanks Background In my first build of this app I've mapped the objects to the given entities without relationships and fetched all belonging contacts to a company with the predicate companyID @ . Due to the amount of data 4000 Companies.. @ firstName contactMapping.setDefaultValueForMissingAttributes NO contactMapping.primaryKeyAttribute @ contactID Init relationships contactMapping mapRelationship @ company withMapping companyMapping contactMapping connectRelationship @ company withObjectForPrimaryKeyAttribute.. @ company withObjectForPrimaryKeyAttribute @ companyID Get objects from server ... iphone core data restkit relationships share improve this question Yes RestKit can hydrate this relationship for you at mapping time. On your RKManagedObjectMapping..
How to create classes after creating Core Data model in Xcode for iPhone http://stackoverflow.com/questions/1023769/how-to-create-classes-after-creating-core-data-model-in-xcode-for-iphone to create classes after creating Core Data model in Xcode for iPhone I have created my Model Entities Properties and Relationships in Xcode. How are the classes for my Entities created Do I have to manually create them iphone core data share improve..
Fetched Properties - Predicate http://stackoverflow.com/questions/10951844/fetched-properties-predicate to seperate them. The main problem is that it isn't possible to have relations across different stores Cross Store Relationships . I haven't found a sample for a Fetched Property Project yet so i'm here trying to make my own. For the sample there is..
How to correctly setup a NSPredicate for a to-many relationship when using Core Data? http://stackoverflow.com/questions/1347776/how-to-correctly-setup-a-nspredicate-for-a-to-many-relationship-when-using-core Guide says regarding the use of predicates in conjunction with to many relationships. Using Predicates with Relationships If you use a to many relationship the construction of a predicate is slightly different. If you want to fetch Departments..
Fetched Properties v Relationships (Core Data - iPhone) http://stackoverflow.com/questions/1737415/fetched-properties-v-relationships-core-data-iphone Properties v Relationships Core Data iPhone I'm a new iPhone developer of about 4 months or so who is starting to look at Core Data. In the Beginning..
Status bar appear over my view's bounds in iOS 7 [duplicate] http://stackoverflow.com/questions/18375898/status-bar-appear-over-my-views-bounds-in-ios-7 adjust the views and controls in the storyboard or XIB files to learn more about constraints see 𦒄onstraints Express Relationships Between Views . If both versions of a standard app should have a similar layout and you 胩e not using Auto Layout use offsets...
http://stackoverflow.com/questions/19303062/core-data-relationships-how-to-insert-a-new-object-into-an-entity-and-create-a Data Relationships How to insert a new object into an entity and create a relationship to an existing object in another entity I am building.. it's a best practice to name your entities in a singular form so Score instead of Scores and so on. You should read Relationships and Fetched Properties in Core Data Programming Guide . It's all nicely described in there. UPDATE I think there shouldn't..
RESTful frameworks for Android, iOS…? http://stackoverflow.com/questions/4097686/restful-frameworks-for-android-ios to deliver the Access Token on any request. Maybe as parameter or in the HTTP Header HTTPS SSL support Pagination and Relationships with lazy loading support would be great Otherwize the framework must be able to be adjusted for these things. We already..
RestKit Object Mapping Relationships without KVC http://stackoverflow.com/questions/9318565/restkit-object-mapping-relationships-without-kvc Object Mapping Relationships without KVC After reading the Object Mapping Guide on GitHub for RestKit my problem didn't disappear so perhaps somebody.. my problem didn't disappear so perhaps somebody can say if RestKit could deal with the following idea. Entities with Relationships Company unitID companyID name contacts Company Contact 1 n Contact unitID companyID contactID lastName firstName account..
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