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passing object between two views (iOS SDK)

开发者 https://www.devze.com 2023-03-08 13:49 出处:网络
What is the best way to pass an object between two views and how would I go about doing so?开发者_高级运维If you are using two view controllers then making property will be best way for you.

What is the best way to pass an object between two views and how would I go about doing so?开发者_高级运维


If you are using two view controllers then making property will be best way for you.

in .h file 

NSString *name;

@property (nonatomic, retain) NSString *name;

and in .m 

@synthesize name;

for more how to use property look - http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/ObjectiveC/Chapters/ocProperties.html#//apple_ref/doc/uid/TP30001163-CH17-SW1


Use the properties declared in each controller.


I'm assuming you have two view controllers, ViewController1 and ViewController2. In both header files (.h), add an instance variable:

CustomObject *myObjectToPass;

and also

@property (nonatomic, retain) CustomObject *myObjectToPass;

If you are passing a BOOL, int or float, then do not retain it, for an NSString, use copy in place of retain, etc.

In the implementation file (.m), synthesize the variable:

@synthesize myObjectToPass;

Now you can get and set the object between viewControllers. The best way to do this depends on how they are related (e.g. in a navigationController or a tabBarContoller, etc). This should get you started, though.

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