i have a uiviewcontroller named MainViewController, i add a subview in it (name:DetailView) in viewdidload event. when i press the a button in mainviewController i want to call a method in subview, writeSomething. //DetailView is a subclass of a UIView.

主讲人:

    - (void)viewDidLoad {
    [super viewDidLoad];
    NSArray *nibViews = [[NSBundle mainBundle] loadNibNamed:@"DetailView" owner:self options:nil];
    UIView *aView= [nibViews objectAtIndex:0];
    aView.tag=100;
    self.detailView=aView;
    [detailContainer addSubview:self.detailView];


    }

-(void) writeAnythingInSubViewsLabel{
//i tried to reach detail UIView
 NSArray* subviews = [NSArray arrayWithArray: detailContainer.subviews];
 for (UIView *xView in subviews) {
  if ([xView isKindOfClass:[UIView class]]  && xView.tag==100) {
   NSLog(@"%@", xView);
   [xView writeSomething:@"hello"];
   break;
  }
 }
}

注

-(void) writeSomething:(NSString *)anyText{
NSLog(@"%@", anyText);
}

but it gives error; [UIView writeSomething]: unrecognized selector sent to instance.... it also gives a warning before build, UIView may not respond writeSomething... i kknow UIView and DetailView doesnt match. thats why it gives warning. i tried also for (DetailView *xView in subviews) { but it never finds the tag in the loop.

i hope anyone help me... EDIT: DetailView.m

#import "DetailView.h"


@implementation DetailView
@synthesize image, button, label;
@synthesize delegate;

- (void)dealloc {
    [image release];
    [button release];
    [label release];
    [super dealloc];
}


- (id) initWithCoder: (NSCoder *) decoder {
    return self;
}


- (id)initWithFrame:(CGRect)frame {
    if ((self = [super initWithFrame:frame])) {
        // Initialization code
    }
    return self;
}

/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
    // Drawing code
}
*/

-(IBAction) backButtonPressed:(id) sender{
    [delegate hideDetailView];

}

-(void) writeSomething:(NSString *)anyText{
    NSLog(@"%@", anyText);
}

@end