objective-c-2.0

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how to convert a utf8 format nsstring to a regular nsstring?

i have a question that i get a NSString(maybe i called it astring) form a stream server when i print this astring ,shows\\u5f20\\u9510\\u7b49\\u540c\\u5fd7\\u4efb in console.[详细]

2023-03-12 12:37 分类：问答
What do you bind NSArrayController's Managed Object Context to in Xcode 4?

I am trying to build an d开发者_Python百科ocument-based application for beer reviewing that allows you to enter your notes. I have built the model in Core Data and the view in Interface Builder. Follo[详细]

2023-03-10 01:55 分类：问答
why are getters and setters required in objective c?

i have read several answers on stackoverflow with this question in my mind, but my question is a little different.[详细]

2023-03-09 05:46 分类：问答
Planning on writing operating system in Objective-C [closed]

Closed. This question needs to be more focused. It is not currently accepting answers. 开发者_运维知识库[详细]

2023-02-19 00:35 分类：问答
technique to create falling letters and words

I\'m looking for a technique to create a window with letters that drop from top to bottom, forming words as开发者_JAVA技巧 they go.[详细]

2023-02-17 02:44 分类：问答
how to get random nubmer +1 or -1 (just need it for "+" or "-")

i need开发者_开发百科 random number but only +1 or -1 (to have force direction defined in box2d) how to get this only two random numbers? thank you!int random = arc4rand()%2 ? -1 : 1;[详细]

2023-02-16 07:58 分类：问答
How to add a 2nd view as a Tab Bar View (iPhone SDK)

So before I\'ve managed to work with TabBarViewControllers and create an application using them. However every time I do so the view acts as my main view. This time around I want my TabBarView to be m[详细]

2023-02-16 05:48 分类：问答
Use of singleton class and sqlite

Im new to objective-c and I\'ve been reading up on singleton classes. I want to implement it into my logic but im not sure if its c开发者_Go百科orrect/possible/doable to do so, any advise would be app[详细]

2023-02-14 03:46 分类：问答
Is any memory leak in iOS accepted at all?

I am new to Objective-C (coming from Java) and I think I am getting a pretty good understanding of memory management.[详细]

2023-02-12 13:00 分类：问答
How to test property existence and type based on NSString typed key?

In my quest to update a Core Data model within my iOS project, I\'m querying a server for JSON objects that correspond - to some extent - with the managed entities of my model. The end result I\'m str[详细]

2023-02-10 02:46 分类：问答