2017-08-29 59 views
0

我的项目的结构是这样的: - 查看 --UIScrollView ---查看 ---- containerItems实现迅速的UIScrollView 3

我试图让我的屏幕滚动的,但始终是静态的,这是我的代码:

class LoginCtrl: UIViewController { 
    let svPantalla: UIScrollView = { 
     let sv = UIScrollView(frame: UIScreen.main.bounds) 
     sv.backgroundColor = UIColor(r: 31, g: 90, b: 161) 
     sv.contentSize = CGSize(width: 0, height: 0) 
     sv.isScrollEnabled = true 
     sv.contentOffset = CGPoint(x: 10, y: 20) 
     sv.translatesAutoresizingMaskIntoConstraints = false 
     return sv 
    }() 
    let v2: UIView = { 
     let view = UIView() 
     view.backgroundColor = UIColor.green 
     view.translatesAutoresizingMaskIntoConstraints = false 
     return view 
    }() 
    //contenedor textField 
    let contenedorCampos: UIView = { 
     let view = UIView() 
     view.backgroundColor = UIColor(r: 255, g: 255, b: 255) 
     view.translatesAutoresizingMaskIntoConstraints = false 
     view.layer.cornerRadius = 5 
     view.layer.masksToBounds = true 
     return view 
    }() 
    let botonLoginRegistrarme: UIButton = { 
     let button = UIButton(type: .system) 
     button.backgroundColor = UIColor(r: 255, g: 152, b: 0) 
     button.setTitle("Iniciar Sesion", for: .normal) 
     button.setTitleColor(UIColor.white, for: .normal) 
     button.titleLabel?.font = UIFont.boldSystemFont(ofSize: 16) 
     button.translatesAutoresizingMaskIntoConstraints = false 
     return button 
    }() 
    override func viewDidLoad() { 
     super.viewDidLoad() 
     view.addSubview(svPantalla) 
     svPantalla.addSubview(v2) 
     v2.addSubview(contenedorCampos) 
     v2.addSubview(botonLoginRegistrarme) 
     setear_posicion_svPantalla() 
     setear_posicion_hijoV() 
     setear_posicion_contenedor() 
     setear_posicion_botonRegistrarme() 
     //this functions are in the image added 
    } 
} 

functions 我的滚动不工作,我怎么能解决这个问题?

+0

你能实际上看到你的滚动视图? – JohnnyAW

+0

你必须在你的滚动子元素中为高度设置约束,那么滚动视图将计算它的contentSize以使其可滚动。您也可以尝试手动设置,但从未尝试过。在你的viewDidLoad中加入'svPantalla.contentSize = CGSize(width:yourWidth,height:yourHeight)' – GIJOW

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no @JohnnyAW但是backgroundcolor我可以看到 –

回答

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由于已设置

sv.contentSize = CGSize(宽度:0,高度:0)

请删除此行或添加值而不是0

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我加了但我有同样的错误 –