【发布时间】:2016-12-28 16:42:06
【问题描述】:
在我的应用程序中,我在 UITableView 上显示了“组”物种。
有些组是免费的,有些是应用内购买的。
应用内购买的组在cellForRowAtIndexPath 中设置了该行的挂锁UIImage。
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
let cell: UITableViewCell = tableView.dequeueReusableCell(withIdentifier: Resource.SpeciesCell)!
let specieImage: UIImageView = cell.viewWithTag(Resource.SpeciesImageTag) as! UIImageView
let specieName: UILabel = cell.viewWithTag(Resource.SpeciesNameTag) as! UILabel
let specieGenus: UILabel = cell.viewWithTag(Resource.SpeciesGenusTag) as! UILabel
let specieFamily: UILabel = cell.viewWithTag(Resource.SpeciesFamilyTag) as! UILabel
specieName.text = self.species[(indexPath as NSIndexPath).row].specie
specieFamily.text = ""
specieGenus.text = AppDelegate.getRLDatabase().getSubGroupName_BySpecieName(specieName.text!)
let padLock: UIImageView = cell.viewWithTag(Resource.SpeciesCategoryLabelTag) as! UIImageView
padLock.image = UIImage(named: "PadlockIcon")
padLock.alpha = 0.7
let fishesPurchased = UserDefaults.standard.bool (forKey: "ReefLife5Fishes")
let sharksPurchased = UserDefaults.standard.bool (forKey: "ReefLife6Sharks")
let turtlesPurchased = UserDefaults.standard.bool (forKey: "ReefLife8Turtles")
let seahorsesPurchased = UserDefaults.standard.bool (forKey: "ReefLife9Seahorses")
let vertebratesPurchased = UserDefaults.standard.bool (forKey: "ReefLife3Vertebrates")
let fullPurchased = UserDefaults.standard.bool (forKey: "ReefLife1Full")
padLock.isHidden = false
specieImage.alpha = 1.0
let speciesGroup = self.species[(indexPath as NSIndexPath).row].group
if fullPurchased == true {
padLock.isHidden = true
specieImage.alpha = 1.0
} else if speciesGroupVertebratesArray.contains(speciesGroup) {
if vertebratesPurchased == true {
padLock.isHidden = true
specieImage.alpha = 1.0
} else {
if speciesGroup == "Fish" {
if fishesPurchased == true{
padLock.isHidden = true
specieImage.alpha = 1.0
} else{
specieImage.alpha = 0.5
}
} else if (speciesGroup == "Sharks" || speciesGroup == "Rays" ) {
if sharksPurchased == true{
padLock.isHidden = true
specieImage.alpha = 1.0
} else{
specieImage.alpha = 0.5
}
} else if speciesGroup == "Syngnathiformes" {
if seahorsesPurchased == true{
padLock.isHidden = true
specieImage.alpha = 1.0
} else{
specieImage.alpha = 0.5
}
} else if speciesGroup == "Reptilia" {
if turtlesPurchased == true{
padLock.isHidden = true
specieImage.alpha = 1.0
} else{
specieImage.alpha = 0.5
}
}
}
}
....
我有一个基于 UISwitch 的选项设置来“隐藏锁定的项目”
当用户选择此项时,我想隐藏锁定的组(或未购买的项目)。我认为实现这一点的最佳方法是通过将行高设置为 0 来隐藏特定的行。
我正在努力使用 indexPath.row 将行高设置为 0,因为 indexPath.row 不接受 CGFloat 命令。
建议?
编辑: 意识到我需要使用 heightForRowAt indexPath: IndexPath 函数,但我很难将它分配给 indexPath.row。
也许更好的问题是:如何设置它以便我知道哪个 indexPath.row 具有“padLock.isHidden == false”。
【问题讨论】:
标签: ios uitableview swift3 heightforrowatindexpath