Global NSString

Question

I need to create an NSString, so I can set its value in one class and get it in another. How can i do this?

Answer 1

if you write:

NSString *globalString = @"someString";   

anywhere outside a method, class definition, function, etc., it will be able to refer anywhere. (it's global!)

A file that accesses it will declare it as external

extern NSString *globalString;

This declaration means that it is being accessed from another file.

Answer 2

NSString global variable for full iPhone / Apps project

To declare / define / use a global variable, follow these simple steps: -

• NSObject "GlobalVars.h .m"

• GlobalVars.h #import @implementation, -

  extern NSString * Var_name;

• GlobalVars.m #import @implementation -

  NSString * Var_name = @"";

• AppDelegate.h

  @property (, ) NSString * Var_name;

• AppDelegate.m.

  @synthesize Var_name;

• , ( .m), / GlobalVars.h .h , .

• , .

Answer 3

.

:

NSMutableString *myString = @"some funny string";

:

extern NSMutableString *myString;

Answer 4

NSString, , , .

MyClass.h:

@interface MyClass : NSObject {}
     + (NSString *)myGlobalVariable;
     + (void)setMyGlobalVariable:(NSString *)val;
@end

MyClass.m:

@implementation MyClass
    NSString *myGlobalVariable = @"default value";

    + (NSString *)myGlobalVariable {
        return myGlobalVariable;
    }

    + (void)setMyGlobalVariable:(NSString *)val {
        myGlobalVariable = val;
    }
@end

Answer 5

, . , int - NSObject.

. . , - .

Answer 6

, . , , - Singletons, AppDelegates .

singleton MVC iPhone: