Question

这里我在firstviewcontroller中向nsmutablearray添加值。当我单击UIButton时，我想将此数组传递给另一个视图控制器。

AppointmentClass *appObj = [[AppointmentClass alloc]init];
appObj.subject = [key objectForKey:@"Subject"];
appObj.location = [key objectForKey:@"Location"];
appObj.scheduledStart = [key objectForKey:@"ScheduledStart"];
appObj.scheduledEnd = [key objectForKey:@"ScheduledEnd"];
[firstNameArray addObject:appObj];            
[appObj release];
appObj=nil;

当我将firstnamearray值传递给appointmentdataarray时。

secondviewcontroller *appointmentViewObject = [[secondviewcontroller alloc]initWithNibName:@"secondviewcontroller" bundle:nil];
[appointmentViewObject setAppointmentDataArray:firstNameArray];

从上面看，appointmentdataarray返回一个空值。

[self presentModalViewController:appointmentViewObject animated:YES];
[appointmentViewObject release];

Answer 1

你分配了阵列吗？

NSMutableArray* firstNameArray = [NSMutableArray array];

Answer 2

你可以尝试一件事：在secondviewcontroller.m中添加以下方法：

-(id) initwithnibName:(NSString*)_nib withArray:(NSMutableArray*)_array{

  self = [super initWithNibName:_nib bundle:nil];

if (self) {
    self.array =_array;
}
return self;

}

并将-(id) initwithnibName:(NSString*)_nib withArray:(NSMutableArray*)_array;添加到secondviewcontroller.h。

现在替换secondviewcontroller *appointmentViewObject = [[secondviewcontroller alloc]initWithNibName:@"secondviewcontroller" bundle:nil]; [appointmentViewObject setAppointmentDataArray:firstNameArray];

secondviewcontroller *appointmentViewObject = [[secondviewcontroller alloc]initwithnibName:@"secondviewcontroller" withArray:firstNameArray];

希望这有帮助。

Answer 3

尝试修改声明：

  [appointmentViewObject setAppointmentDataArray:firstNameArray];

有了这个：

  [appointmentViewObject setAppointmentDataArray:[NSArray arrayWithArray:firstNameArray]];

Answer 4

使用它：

secondviewcontroller.h文件

 NSMutableArray* AppointmentDataArray;

 @property(nonatomic,retain) NSMutableArray* AppointmentDataArray;
 -(void)setMyArray:(NSMutableArray *)arr;

secondviewcontroller.m文件

 @synthesize AppointmentDataArray;

 - (id)initWithNibName:(NSString *)nibNameOrNil 
            bundle:(NSBundle *)nibBundleOrNil
 {
      if ((self = [super initWithNibName:nibNameOrNil 
                            bundle:nibBundleOrNil])) {
         // Custom initialization.
           AppointmentDataArray = [[NSMutableArray alloc] init];
       }
    return self;
  }

   -(void)setMyArray:(NSMutableArray *)arr{
          AppointmentDataArray=arr;
    }

///////推送时

   secondviewcontroller *appointmentViewObject = [[secondviewcontroller alloc]initWithNibName:@"secondviewcontroller" bundle:nil];
   [appointmentViewObject setMyArray:firstNameArray];
   [self presentModalViewController:appointmentViewObject animated:YES];

将nsmutablearray从一个viewcontroller传递到另一个视图控制器

4 个答案: