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
{
[activityCommentViewController
getcommentUserName:cet.usernamec
Aid:saveactivitytaid];
[self
presentModalViewController:activityCommentViewController
animated: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。