ios - Assigning a variable from another class -

i have uiview uibutton created in 1 class: "viewclass". in mainvc class, called viewclas , needed call method in mainvc when button selected, created protocol. (i hope clear.)

here's how set protocol , delegate:

viewclass.h

@protocol viewclassdelegate  -(void)buttonwasclicked;  @end  ... @property (nonatomic, strong) id<viewclassdelegate> delegate; 

viewclass.m

[submitbutton addtarget:self action:@selector(submitbuttontapped) forcontrolevents: uicontroleventtouchupinside];  - (void)submitbuttontapped {     [self.delegate buttonwasclicked]; } 

mainvc.m

// imported , called delegate in mainvc.h. in .m set delegate  -(void)buttonwasclicked {     // perform action } 

is there way pass nsstring buttonwasclicked? don't mean this:

- (void)buttonwasclicked:(nsstring *)mystring 

because mystring has no value unless assign in mainvc method. want assign in submitbuttontapped (which in myview.m).

basically, want this:

- (void)textfielddidbeginediting:(uitextfield *)textfield 

in method, knows textfield without me defining when use method.

hope clear. if can explain better, feel free edit it. if need more clarification, please ask in comments.

viewclass.h

@protocol viewclassdelegate  -(void)buttonwasclicked:(nsstring *)astring;  @end 

viewclass.m

[submitbutton addtarget:self action:@selector(submitbuttontapped) forcontrolevents: uicontroleventtouchupinside];  - (void)submitbuttontapped {     [self.delegate buttonwasclicked:@"this string"]; } 

mainvc.m

// imported , called delegate in mainvc.h. in .m set delegate  -(void)buttonwasclicked:(nsstring *)astring {     // astring = string  }