我正在制作一个调查应用程序,我在开始按钮上将数据上传到服务器,我希望当单击停止按钮时,它应该停止数据上传,这是在以下方法中。
下面是上传按钮开始按钮。
-(IBAction)startSyncButtonAction{
   CereniaAppDelegate *appDelegate = (CereniaAppDelegate *)[[UIApplication sharedApplication] delegate];
   for (int i=0; i<[appDelegate.coffeeArray count]; i++) {
    Coffee *coffeeObj = [appDelegate.coffeeArray objectAtIndex:i];
    int mycount=[appDelegate.coffeeArray count];
    NSLog(@"My Array count is %d",mycount);
        NSString*device_Id=coffeeObj.device_Id;
        NSString*R1=coffeeObj.R1;
        NSString*R2=coffeeObj.R2;
        NSString*R3=coffeeObj.R3;
        NSString*comment=coffeeObj.comment;
            NSString*update_date_time=coffeeObj.update_date_time;
    [appDelegate removeCoffee:coffeeObj];
    int mycount1=[appDelegate.coffeeArray count];
    NSLog(@"My Array After delete is %d",mycount1);
    NSLog(@"device_Id%@",device_Id);
    NSLog(@"R1%@",R1);
    NSLog(@"R2%@",R2);
    NSLog(@"R3%@",R3);
    NSLog(@"comment%@",comment);
    NSLog(@"update_date_time%@",update_date_time);
            NSString *post =[[NSString alloc] initWithFormat:@"device_Id=%@&R1=%@&R2=%@&R3=%@&comment=%@&update_date_time=%@",device_Id,R1,R2,R3,comment,update_date_time];
    NSLog(post);
    NSURL *url=[NSURL URLWithString:@"http://celeritas-solutions.com/pah_brd_v1/pfizersurvey/SyncSurveySTD.php"];
    NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
    NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init] ;
    [request setURL:url];
    [request setHTTPMethod:@"POST"];
    [request setValue:postLength forHTTPHeaderField:@"Content-Length"];
    [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
    [request setHTTPBody:postData];
    NSError *error;
    NSURLResponse *response;
    NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
    NSString *data=[[NSString alloc]initWithData:urlData encoding:NSUTF8StringEncoding];
    NSLog(@"%@",data);
     }
         }
         -(IBAction)stopButtonAction{
          }