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我目前正在构建应用程序的UI，而不使用IB或故事板。我有以下层次结构： 1. ViewController：它是主视图控制器。 2. DrawerViewController：它是下部抽屉菜单的视图控制器。 主视图控制器将作为子视图添加drawerViewController的视图。 3.添加按钮：这是一个创建的UIButton，并以编程方式添加到drawerViewController的视图。按钮点击崩溃整个应用程序
问题是，如果我点击添加按钮，应用程序崩溃，除了（lldb）之外，输出中绝对没有错误消息。
我曾尝试以下：
- 更改选择的名称和方法名。
- 检查选择器方法的名称。
- 添加并删除了选择器方法的参数。
- 更改了按钮的名称。
- 在另一个视图中添加了按钮。
有没有办法追查使用断点的错误，因为应用程序编译就好了，如果你点击按钮的应用程序只能崩溃。
下面是我创建的显示问题测试项目链接：
的ViewController：
class ViewController: UIViewController //, DrawerDelegate
{
//Lower Drawer.
var drawerView: DrawerView!
var drawerViewHidden: Bool = false
var addButton: UIButton!
var viewHeight: CGFloat! = 0
var viewWidth : CGFloat! = 0
var shownDrawerViewY: CGFloat!
var hiddenDrawerViewY: CGFloat!
init()
{
super.init(nibName: nil, bundle: nil)
}
required init(coder aDecoder: NSCoder)
{
super.init(coder: aDecoder)
}
override func viewDidLoad()
{
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
//Setup UI
setUpUI()
}
override func viewWillAppear(animated: Bool)
{
super.viewWillAppear(animated);
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
//MARK:- UI initialization.
/**
Private function that setsup the UI.
*/
private func setUpUI()
{
setUpDrawer()
}
//MARK: Drawer setup.
/**
A private function that programatically creataes a drawer and add it to the view.
*/
private func setUpDrawer()
{
var controller = DrawerViewController(width: self.view.frame.width, height: self.view.frame.height)
self.view.addSubview(controller.view)
//Hide
// toggleDrawer()
}
//MARK:- Delegates.
//MARK: DrawerDelegate methods.
func addButtonClicked(sender: UIButton)
{
// toggleDrawer()
}
}
DrawerViewController
class DrawerViewController: UIViewController
{
//Drawer variables.
var drawerViewHidden: Bool = false
var addPinDrawer: AddPinDrawer!
var viewHeight: CGFloat! = 0
var viewWidth : CGFloat! = 0
var shownDrawerViewY: CGFloat?
var hiddenDrawerViewY: CGFloat?
var addButton: UIButton?
init(width: CGFloat, height: CGFloat)
{
super.init(nibName: nil, bundle: nil)
viewWidth = width
viewHeight = height
setUpUI()
}
override func viewDidLoad()
{
super.viewDidLoad()
// Do any additional setup after loading the view.
}
override func viewWillAppear(animated: Bool)
{
super.viewWillAppear(animated)
}
override func didReceiveMemoryWarning()
{
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
required override init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: NSBundle?)
{
super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
}
required init(coder aDecoder: NSCoder)
{
fatalError("init(coder:) has not been implemented")
}
//MARK:- UI setup
func setUpUI()
{
setUpDimensions()
setUpDrawerElements()
// toggleDrawer()
}
func setUpDimensions()
{
//Determine the y in the case drawer is shown
shownDrawerViewY = viewHeight * 2.0/8.0
//Determine the height of the drawer.
let drawerHeight = viewHeight * 6.0/8.0
//Determine the y in the case drawer is hidden
hiddenDrawerViewY = viewHeight * 7.4/8.0
//Create the frame, starting with the drawer shown.
let frame = CGRectMake(0, shownDrawerViewY!, viewWidth, drawerHeight)
//Create a new Drawer View.
self.view = UIView(frame: frame)
setUpAddButton(frame)
//Setup the background image of the drawer.
self.view.backgroundColor = UIColor(patternImage: UIImage(named: Constants.drawerBackgroundImage)!)
}
func setUpDrawerElements()
{
//Setup the button.
setUpAddPinDrawer()
}
func setUpAddPinDrawer()
{
addPinDrawer = AddPinDrawer(frame: CGRectMake(0, 0, self.view.frame.width, self.view.frame.height))
// self.view.addSubview(addPinDrawer)
}
//MARK: Handling drawer toggles
func toggleDrawer()
{
//Toggle the variable.
drawerViewHidden = !drawerViewHidden
//If the drawer must be hidden.
if drawerViewHidden
{
hideDrawer()
}
//If the drawer must be shown
else
{
showDrawer()
}
}
func hideDrawer()
{
//Hide the drawer
UIView.animateWithDuration(0.6, animations: {() -> Void in
self.view.frame.origin.y = self.hiddenDrawerViewY!
})
// drawerView.hideDrawer()
}
func showDrawer()
{
UIView.animateWithDuration(0.6, animations: {() -> Void in
self.view.frame.origin.y = self.shownDrawerViewY!
})
// drawerView.showDrawer()
}
func setUpAddButton(frame: CGRect!)
{
//Determine the button dimensions.
let width:CGFloat = 75.0//1.0/10.0 * viewHeight
let x = frame.width/2.0 - width/2.0
//Button background image.
let background = UIImage(named: Constants.addButtonBackgroundImage)!
//Create the button.
addButton = UIButton(frame: CGRectMake(x, -width/2.0, width, width)) as UIButton
// addButton!.setImage(background, forState: UIControlState.Normal)
addButton?.backgroundColor = UIColor.yellowColor()
//Add the event handler.
addButton!.addTarget(self, action: "buttonAdd:", forControlEvents: .TouchUpInside)
//Set it rotated.
// self.addButton!.transform = CGAffineTransformMakeRotation(CGFloat(M_PI_4))
//Add the button to the subview.
self.view.addSubview(addButton!)
// println(addButton!.targetForAction("test", withSender: addButton)!)
}
func buttonAdd(sender: UIButton)
{
println("Helloooo asdf")
}
}
你的'DrawerViewController'也在故事板？ （init（coder :)还没有实现）'）'在init（coder）中的行到'super.init（coder：aDecoder）' –
您是否设置了断点？ – nhgrif
@VivekMolkar DrawerViewController不在故事板中，故事板中除viewController类外没有任何内容，故事板中完全没有内容。一切都以编程方式添加。 –