我知道这个问题在这里经常出现,但我似乎仍然无法让它发挥作用。我可能没有正确启动 View 或其他...无论如何,我正在尝试以编程方式向 UIScrollView 添加多个标签和图像。这是我的 .h 文件的代码:
#import <UIKit/UIKit.h>
@interface DOR_HelpViewController : UIViewController <UIScrollViewDelegate> {
IBOutlet UIScrollView *scrollView;
}
@property (nonatomic, retain) IBOutlet UIScrollView *scrollView;
@end
还有我的 .m 文件:
#import "DOR_HelpViewController.h"
@implementation DOR_HelpViewController
@synthesize scrollView;
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
scrollView = [[UIScrollView alloc] init];
UILabel *pointsCouponLbl = [[UILabel alloc] initWithFrame:CGRectMake(0.0, 20.0, 320.0, 15.0)];
pointsCouponLbl.font = [UIFont boldSystemFontOfSize:14.0];
pointsCouponLbl.textAlignment = UITextAlignmentCenter;
pointsCouponLbl.textColor = [UIColor blackColor];
pointsCouponLbl.backgroundColor = [UIColor clearColor];
pointsCouponLbl.text = @"Points Earned Using a Coupon";
[scrollView addSubview:pointsCouponLbl];
UIImageView *pointsCouponImg = [[UIImageView alloc] initWithFrame:CGRectMake(72, 45, 175, 100)];
pointsCouponImg.image = [UIImage imageNamed:@"couponpoints.png"];
[scrollView addSubview:pointsCouponImg];
UILabel *pointsCheckInLbl = [[UILabel alloc] initWithFrame:CGRectMake(0.0, 165.0, 320.0, 15.0)];
pointsCheckInLbl.font = [UIFont boldSystemFontOfSize:14.0];
pointsCheckInLbl.textAlignment = UITextAlignmentCenter;
pointsCheckInLbl.textColor = [UIColor blackColor];
pointsCheckInLbl.backgroundColor = [UIColor clearColor];
pointsCheckInLbl.text = @"Points Earned For Check-In";
[scrollView addSubview:pointsCheckInLbl];
pointsCheckInLbl = nil;
UIImageView *pointsCheckInImg = [[UIImageView alloc] initWithFrame:CGRectMake(72, 190, 175, 100)];
pointsCheckInImg.image = [UIImage imageNamed:@"checkinpoints.png"];
[scrollView addSubview:pointsCheckInImg];
pointsCheckInImg = nil;
}
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
#pragma mark - View lifecycle
- (void)viewDidUnload
{
[super viewDidUnload];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
@end
scrollView
链接到 Storyboard中的 UIScrollView
对象。如果您不介意的话,我将非常感谢有关我做错了什么以及原因的信息。先谢谢了~
最佳答案
删除 scrollView = [[UIScrollView alloc] init];
使用 IB 时没有必要(甚至适得其反)。
(实际上这只是评论中的一个想法 - 见上文。但我会尽可能地赢得声誉;-) )
关于uiscrollview - 以编程方式将 UILabels 和 UIImageViews 添加到 UIScrollView,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/10434059/