全局变量数据有效时间

1。

#import"DetailActivityViewController.h"

@implementation DetailActivityViewController

- (void) viewDidLoad{

   

   activityCommentViewController = [[ActivityCommentViewController alloc] init];

    

}

-(void)ReplyCommentButton:(id)sender

{

        [activityCommentViewControllergetcommentUserName:cet.usernamecAid:saveactivitytaid];

        [selfpresentModalViewController:activityCommentViewControlleranimated:YES];

}

///////////////////////////////////////////////

ActivityCommentViewController

-(void)getcommentUserName:(NSString *)usename Aid:(int)aid

{

   savecommentusename = usename;

    saveaid = aid;

    

}

activityCommentViewController  即使   dismissModalViewControllerA.. ,savecommentusename数据也存在。

2。

#import "DetailActivityViewController.h"

@implementation DetailActivityViewController

- (void) viewDidLoad{

   

    

}

-(void)ReplyCommentButton:(id)sender

{

activityCommentViewController = [[ActivityCommentViewController alloc] init];

        [activityCommentViewController getcommentUserName:cet.usernamec Aid:saveactivitytaid];

        [self presentModalViewController:activityCommentViewController animated:YES];

}

///////////////////////////////////////////////

ActivityCommentViewController

-(void)getcommentUserName:(NSString *)usename Aid:(int)aid

{

    savecommentusename = usename;

    saveaid = aid;

    

}

activityCommentViewController   dismissModalViewControllerA..时 ,savecommentusename数据不存在。