Xcode Swift 2表格视图滚动更改数据
我无法正确加载数据!当我向下滚动并备份时,上面的单元格加载得很好。曾经黑暗的图标会点亮,当它们被触摸时,它们会随机拨打一个号码。这是很奇怪的,因为其他带有电话号码的单元格不会只更改保留为“”的单元格 这是来自ViewController.swift的Xcode Swift 2表格视图滚动更改数据,xcode,swift,tableview,Xcode,Swift,Tableview,我无法正确加载数据!当我向下滚动并备份时,上面的单元格加载得很好。曾经黑暗的图标会点亮,当它们被触摸时,它们会随机拨打一个号码。这是很奇怪的,因为其他带有电话号码的单元格不会只更改保留为“”的单元格 这是来自ViewController.swift的 func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int { return contactList.count } func
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return contactList.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = self.tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath) as! TableViewCell
let contact = contactList[indexPath.row]
cell.name.text = "\(contact.name)"
cell.id.text = "\(phoneFormat(contact.callPhone))"
if contact.callPhone != "" {
cell.callButton.setImage(UIImage(named: "phone.png"), forState: UIControlState.Normal)
cell.callButton.userInteractionEnabled = true
cell.callButton.tag = indexPath.row
cell.callButton.addTarget(self, action: "call:", forControlEvents: .TouchUpInside)
}
/* if contact.smsPhone != nil {
cell.smsButton.setImage(UIImage(named: "chat.png"), forState: UIControlState.Normal)
cell.smsButton.userInteractionEnabled = true
cell.smsButton.tag = indexPath.row
}
if contact.email != nil {
cell.emailButton.setImage(UIImage(named: "email.png"), forState: UIControlState.Normal)
cell.emailButton.userInteractionEnabled = true
cell.emailButton.tag = indexPath.row
}*/
return cell
}
这是tableviewcell.swift文件
class TableViewCell: UITableViewCell {
@IBOutlet var name: UILabel!
@IBOutlet var id: UILabel!
@IBOutlet var callButton: UIButton!
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
override func setSelected(selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}}
您看到此行为的原因是您的
if
缺少else
分支,在该分支中,您清除了在if
中设置的视觉内容:
if contact.callPhone != "" {
cell.callButton.setImage(UIImage(named: "phone.png"), forState: UIControlState.Normal)
cell.callButton.userInteractionEnabled = true
cell.callButton.tag = indexPath.row
cell.callButton.addTarget(self, action: "call:", forControlEvents: .TouchUpInside)
} else {
cell.callButton.setImage(nil, forState: UIControlState.Normal)
cell.callButton.userInteractionEnabled = false
cell.callButton.tag = 0
cell.callButton.hidden = true
}
这将防止屏幕上滚动的重复使用单元格的按钮显示在缺少电话号码的单元格中。您看到此行为的原因是您的
if
缺少else
分支,在该分支中,您清除了if
中设置的视觉内容:
if contact.callPhone != "" {
cell.callButton.setImage(UIImage(named: "phone.png"), forState: UIControlState.Normal)
cell.callButton.userInteractionEnabled = true
cell.callButton.tag = indexPath.row
cell.callButton.addTarget(self, action: "call:", forControlEvents: .TouchUpInside)
} else {
cell.callButton.setImage(nil, forState: UIControlState.Normal)
cell.callButton.userInteractionEnabled = false
cell.callButton.tag = 0
cell.callButton.hidden = true
}
这将防止屏幕上滚动的重复使用手机的按钮显示在缺少电话号码的手机中