我有一个ManageCell
类,它存储框架,设置标签文本等...这是CellView
中的UIView ViewController
的子视图。
ManageCell:
import Foundation
import UIKit
class ManageCell {
var name: UILabel
var viewBelowButton: UIView
var deleteButton: UIButton
init (name: String) {
self.name = UILabel(frame: CGRectMake(10,15,250,40)
self.name.text = name
self.name.sizeToFit()
self.viewBelowButton = UIButton(frame: CGRectMake(UIScreen.mainScreen.bounds.width, 0, 70, 70)
//set outside the visible area so that it can be animated in.
self.viewBelowButton.backgroundColor = UIColor.redColor()
self.deleteButton = UIButton(frame: CGRectMake(0,0,70,70))
self.deleteButton.addTarget(ViewController.self, action: "deleteButtonPressed:", forControlEvents: UIControlEvents.TouchUpInside)
self.deleteButton.setTitle("delete", forState: .Normal)
}
}
ViewController:
var cellView: [UIView] = []
var manageCells: [ManageCell] = []
...
//fill the manageCells array
func setSubViews () {
for (index, cell) in manageCells.enumerate() {
cellView.append(UIView(frame: CGRectMake(0, originY, view.bounds.width, 70)
cellView[index].addSubview(cell.name)
cellView[index].addSubview(cell.viewBelowButton)
cell.viewBelowButton.addSubview(cell.deleteButton)
}
}
func editing () {
var frame = CGRectMake(view.bound.width - 70, 0, 0, 70)
for cell in cells {
UIView.animateWithDuration(0.2, animations: {
cell.viewBelowButton.frame = frame
}
}
}
func deleteButtonPressed(sender: UIButton) {
print("button pressed")
}
在
cellView[index]
,viewBelowButton
和deleteButton
上都启用了用户交互。我面临的问题是
deleteButton
无法响应触摸。没有调用deleteButtonPressed:
函数。代码:https://github.com/an23lm/swift-stuff
我不确定这是否是好的做法,欢迎提出任何建议。
最佳答案
当然它没有被调用,ViewController.self
是一个类类型,而不是您的View Controller。即使是这样,也不是一个好习惯。您应在此处使用带有一些参数的委托模式以返回给您,以便您区分按下了哪个单元格删除按钮。
代码示例:
protocol ManageCellDelegate: class {
func manageCellDeletePressed(id: Int)
}
class ManageCell {
var name: UILabel
var viewBelowButton: UIView
var deleteButton: UIButton
weak var delegate: ManageCellDelegate?
var id: Int
init (id: Int, name: String) {
self.id = id
self.name = UILabel(frame: CGRectMake(10,15,250,40))
self.name.text = name
self.name.sizeToFit()
self.viewBelowButton = UIButton(frame: CGRectMake(UIScreen.mainScreen().bounds.width, 0, 70, 70))
//set outside the visible area so that it can be animated in.
self.viewBelowButton.backgroundColor = UIColor.redColor()
self.deleteButton = UIButton(frame: CGRectMake(0,0,70,70))
self.deleteButton.addTarget(self, action: "deleteButtonPressed:", forControlEvents: UIControlEvents.TouchUpInside)
self.deleteButton.setTitle("delete", forState: .Normal)
}
func deleteButtonPressed(sender: AnyObject) {
self.delegate?.manageCellDeletePressed(id)
}
}
class ViewController: UIViewController {
var cellView: [UIView] = []
var manageCells: [ManageCell] = []
func fullManageCells() {
for id in 0...15 {
let manageCell = ManageCell(id: id, name: "something")
manageCell.delegate = self
manageCells.append(manageCell)
}
}
}
extension ViewController: ManageCellDelegate {
func manageCellDeletePressed(id: Int) {
println("button with id \(id) pressed")
}
}
关于ios - 从类实现时,UIButton不可单击,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/32033156/