iPad UIImagePicker问题!

这是我的密码:

.h.:

@interface CameraViewController : UIViewController <UIImagePickerControllerDelegate ,UINavigationControllerDelegate> {

    UIImagePickerController *ipc;
    UIImageView * image1;

@property (.......................;
}

m.先生:

    - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {



    image1.image = [[info objectForKey:UIImagePickerControllerOriginalImage]retain];
    [[picker parentViewController]dismissModalViewControllerAnimated:YES];
    [picker release];   

}


- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {

    [[picker parentViewController]dismissModalViewControllerAnimated:YES];
    [picker release];


}



        -(IBAction) importImage1 {

    ipc = [[UIImagePickerController alloc]init];
    ipc.delegate = self;
    ipc.sourceType =  UIImagePickerControllerSourceTypePhotoLibrary;
    [self presentModalViewController:ipc animated:YES];
}