iOS中的UISCrollView错误

Question

我是UisCrollView的新手。我不知道如何添加按钮。在我的应用程序中，我需要一个水平视图中的按钮。但是，当我尝试以编程方式创建UISCrollView时，它不起作用。它正在抛出一些错误。请帮助我

我也尝试使用故事板来实现此功能，但由于如何使用ViewDidload连接它们，但失败了。

这是我到目前为止使用的代码：

    - (void)viewDidLoad
{
      [super viewDidLoad];
// Do any additional setup after loading the view.
    self.layerPosition = self.toplayer.frame.origin.x;
    UIScrollView *scrollview =[[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, 320, 480)];
     scrollview.showsHorizontalScrollIndicator=YES;
     scrollview.userInteractionEnabled=YES;
     scrollview.scrollEnabled=YES;
    UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [button addTarget:self action:@selector(newView:)   forControlEvents:UIControlEventTouchDown];
    [button setTitle:@"Excavations",@"Concrete",@"Framing",@"Insulation" forState:UIControlStateNormal];
   button.frame = CGRectMake(80.0, 210.0, 160.0, 40.0);
   [self.view addSubview:scrollview];
   scrollview.contentSize = CGSizeMake(320,960);
}

如果我做错了，请告诉我正确的程序。

谢谢

Answer 1

我现在只能在您的代码中看到一个错误：

[button setTitle:@"Excavations",@"Concrete",@"Framing",@"Insulation" forState:UIControlStateNormal];

settitle：期望只有一个字符串，尝试以下操作：

[button setTitle:@"Excavations" forState:UIControlStateNormal];

您可能想添加此按钮您的滚动视图，因此您需要致电：

[scrollview addSubview:button];

应该有帮助，如果不发布您的错误。

我假设您想通过UicontroleventTouchupinside，而不是uicontroleventtouchdown作为按钮控制事件。

Answer 2

尝试一下。它将工作

- (void)viewDidLoad
    {
          [super viewDidLoad];
    // Do any additional setup after loading the view.
        self.layerPosition = self.toplayer.frame.origin.x;
        UIScrollView *scrollview =[[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, 320, 480)];
         scrollview.showsHorizontalScrollIndicator=YES;
         scrollview.userInteractionEnabled=YES;
         scrollview.scrollEnabled=YES;
        UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
        [button addTarget:self action:@selector(newView:)   forControlEvents:UIControlEventTouchDown];
        [button setTitle:@"Excavations" forState:UIControlStateNormal];
       button.frame = CGRectMake(80.0, 210.0, 160.0, 40.0);
       [self.view addSubview:scrollview];
       scrollview.contentSize = CGSizeMake(320,960);
    }