我有一个TableView,其中一些单元格有一个开始一个Activityindicator,但它更新了那个单元格,但是我只是在reloadData()完成后才尝试完成我的ActivityIndicator,但是我看到了答案使用dispatch_async,因为指标首先完成,然后它更新了TableView
,因此无法正常工作修改
DispatchQueue.main.async(execute: {
self.tableView.reloadData()
//From here
self.initOrEndMed = false
let myAlert = UIAlertController(title: "Alerta", message: "Tratamento finalizado", preferredStyle: UIAlertControllerStyle.alert)
let okAction = UIAlertAction(title: "Ok", style: UIAlertActionStyle.cancel, handler: {(alert: UIAlertAction!) -> Void in
self.loadingView(loadingText: "", on: false)
})
myAlert.addAction(okAction)
self.present(myAlert, animated: true, completion: nil)
//To here i want to do after reloadData has finished
})
这是我的loadingView()
func loadingView(loadingText: String, on: Bool) {
self.labelForLoad.text = loadingText
self.labelForLoad.textAlignment = .center
self.labelForLoad.numberOfLines = 2
self.labelForLoad.sizeToFit()
self.labelForLoad.textColor = UIColor(red:0.24, green:0.69, blue:1.00, alpha:1.0)
self.labelForLoad.center = CGPoint(x: activityIndicator.center.x, y: activityIndicator.center.y + 40)
self.overlay.center = CGPoint(x: self.view.bounds.midX, y: self.view.bounds.midY)
self.overlay.addSubview(labelForLoad)
if on {
UIView.beginAnimations(nil, context: nil)
UIView.setAnimationDuration(0.5)
overlay.alpha = overlay.alpha > 0 ? 0 : 0.95
UIView.commitAnimations()
self.view.isUserInteractionEnabled = false
activityIndicator.startAnimating()
} else {
self.view.isUserInteractionEnabled = true
overlay.alpha = 0
activityIndicator.stopAnimating()
}
}
答案 0 :(得分:1)
没有任何方法可以告诉您UITableView已经完成加载所有单元格。解决方法是在获得此dataSource回调时检查indexPath.row是否是数据集中的最后一项 -
tableView(UITableView,cellForRowAt:IndexPath)
然后从cellForRowAt:method。
中调用loadingView()