我試圖在iPhone上實現一個popovercontroller
,它的模態表示類似於iPad。我只能在使用Storyboard時獲得UI,我更願意完全以編程方式構建控制器。 SO和谷歌上的所有演示似乎都使用故事板。我可以看到自定義UIViewController
打印到日誌中的方法,但模式彈出窗口上沒有顯示任何方法。 Showing Popover view在iphone上創建只有自定義viewcontroller類的popoverview
func handlePop(sender: UIButton) {
//let popController:UIViewController = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "unique") as UIViewController //only way I generate UI in popoverview
let popController = MyCustomViewController() //would like to use
//positioning
let placementView = UIView()
view.addSubview(placementView)
view.addConstraintsWithFormat("H:|[v0]|", views: placementView)
view.addConstraintsWithFormat("H:|-64-[v0(200)]", views: placementView)
popController.modalPresentationStyle = UIModalPresentationStyle.popover
if let poppingVC = popController.popoverPresentationController {
let popover: UIPopoverPresentationController = poppingVC
popover.sourceView = placementView
popover.permittedArrowDirections = .up
popover.sourceRect = CGRect(x: view.frame.width/2, y: -100, width: 0, height: 100)
popover.delegate = self
self.present(popController, animated: true, completion:nil)
}
}
func dismissView() {
self.dismiss(animated: true, completion: nil)
}
func adaptivePresentationStyle(for controller: UIPresentationController) -> UIModalPresentationStyle {
return UIModalPresentationStyle.none
}
我缺少什麼是保持popovercontroller
空白?
class RegionSelectionController: UIViewController, UIPopoverPresentationControllerDelegate, UITableViewDelegate, UITableViewDataSource {
let mainLabel = UILabel()
let cellId = "cellId"
let footerId = "footerId"
var keys = [String]()
let tableView = UITableView()
override func viewDidLoad() {
super.viewDidLoad()
tableView.delegate = self
tableView.dataSource = self
self.view.addSubview(tableView)
tableView.register(RegionFilterCell.self, forCellReuseIdentifier: cellId)
tableView.separatorStyle = .none
tableView.delegate = self
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
print(keys.count)
return keys.count
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: cellId, for: indexPath) as! RegionFilterCell
let regionName = keys[indexPath.row]
cell.regionLabel.text = regionName
return cell
}
func tableView(_ tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
let footerCell = RegionRequestNewLocationCell()
return footerCell
}
func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
return 100
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
print(indexPath.row, keys[indexPath.row])
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
ref.child("Region").observeSingleEvent(of: .childAdded, with: { (snap) in
if snap.exists() {
let key: String = snap.key as String
self.keys.append(key)
}
DispatchQueue.main.async (execute: {
self.tableView.reloadData()
})
})
}
}
class RegionFilterCell: BaseTableCell {
let regionLabel: UILabel = {
let label = UILabel()
label.font = UIFont(name: "SFUIText-Medium", size: 16)
label.text = "UMD"
return label
}()
let separatorBar: UIView = {
let view = UIView()
view.backgroundColor = UIColor.rgb(151, green: 151, blue: 151, alpha: 0.3)
return view
}()
override func setupViews() {
super.setupViews()
addSubview(regionLabel)
addSubview(separatorBar)
//addConstraintsWithFormat("H:[v0(100)]", views: regionLabel)
addConstraint(NSLayoutConstraint(item: regionLabel, attribute: .centerX, relatedBy: .equal, toItem: self, attribute: .centerX, multiplier: 1, constant: 0))
addConstraintsWithFormat("V:|[v0]|", views: regionLabel)
addConstraintsWithFormat("H:|[v0]|", views: separatorBar)
addConstraintsWithFormat("V:[v0(0.5)]|", views: separatorBar)
}
}
你試過設置內容大小嗎? 'popController.preferredContentSize = CGSize(width:275,height:225)'。顯然,你想要改變任何你需要的h/w值 – Pierce
添加'popController.preferredContentSize'只會改變popController的大小。你說我需要確保控制器的框架與' preferredContentSize'?仍然看到相同的模糊popview。是的,我看到你對可選展開的看法,但這是否阻止我的控制器顯示? – Josh
不,對不起,我刪除了該評論,因爲它確實與您的問題無關。我真的不明白你是什麼問題。你有沒有嘗試將箭頭方向改爲'.any'? – Pierce