Question

当用户尝试向下滚动表格（超过键盘高度）时，它会自动滚动回到表格顶部，让用户无法按下表格底部行中的任何键。如何禁用此自动滚动到顶部？请注意，这与scrollsToTop属性不同。

import UIKit

class KeyboardViewController: UIInputViewController, UITableViewDelegate, UITableViewDataSource {

var tableView: UITableView = UITableView()
let screenSize: CGRect = UIScreen.mainScreen().bounds


let buttonTitles = [
    "XX",
    "YY"
]

override func viewDidLoad() {
    super.viewDidLoad()

    let screenWidth = screenSize.width
    let screenHeight = screenSize.height
    tableView.frame = CGRectMake(0,0,screenWidth,screenHeight - 40)
    tableView.delegate = self
    tableView.dataSource = self

    tableView.registerClass(UITableViewCell.self,forCellReuseIdentifier: "cell")

    self.view.addSubview(tableView)


}

func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return self.buttonTitles.count
}

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    var cell:UITableViewCell = tableView.dequeueReusableCellWithIdentifier("cell") as! UITableViewCell
    cell.textLabel?.text = self.buttonTitles[indexPath.row]
    cell.textLabel?.textAlignment = .Center
    cell.textLabel?.font = UIFont(name: "Helvetica Neue", size: 14)
    cell.textLabel?.textColor = UIColor.whiteColor()
    cell.textLabel?.numberOfLines = 0
    cell.backgroundColor = UIColor(red: 176/255, green: 15/255, blue: 15/255, alpha: 1.0)
    cell.preservesSuperviewLayoutMargins = false
    cell.layoutMargins = UIEdgeInsetsZero
    cell.separatorInset = UIEdgeInsetsZero
    return cell

}

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    var string = buttonTitles[indexPath.row]
    (textDocumentProxy as! UIKeyInput).insertText("\(string)")
}

Answer 1

移动您的代码，除了

tableView.delegate = self
tableView.dataSource = self

to viewWillAppear

UITableView保持自动滚动到顶部

1 个答案: