我有一个函数，每2秒刷新一次数组的数据
var timer = Timer()
func timeRefresh(){
timer = Timer.scheduledTimer(timeInterval: 2, target: self, selector: #selector(ViewController.refreshData), userInfo: nil, repeats: true)
}
我从邮政服务接收数据
@objc func refreshData(){
post(postString, Route) { (res) in
let success = res["success"]
if success == true {
let walkers = res["walkers"]
for secondItem in walkers.array! {
let duration = secondItem["duration"]
self.timeCar.append(duration.stringValue) //this is the info that i need for the collection view
}
}
print("array time \(self.timeCar)")
}else{
self.timeCar = ["-.-","-.-","-.-","-.-","-.-"]
}
}
}
我需要每秒刷新一次 Collection View
cell.typeLabel.text = timeCar[indexPath.row]
最佳答案
UICollectionView有多种重新加载数据的方式。
如果你想重新加载每个单元格:
collectionView.reloadData() .
如果您想要重新加载特定部分:collectionView.reloadSections(<Array of Sections>) .
如果要重新加载特定单元格:collectionView.reloadItems(<Array of IndexPaths>) .
关于ios - 如何在 swift 4 的 Collection View 中刷新数据？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/53055577/