ios UITableViewCell 多选时选择的背景颜色
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StackOverFlow
UITableViewCell Selected Background Color on Multiple Selection
提问by Bogdan Bogdanov
// Doesn't work
cell.selectionStyle = .Blue
//Works when the selection is not multiple, if it's multiple with each selection the previous one disappear...
let cellBGView = UIView()
cellBGView.backgroundColor = UIColor(red: 0, green: 0, blue: 200, alpha: 0.4)
cell.selectedBackgroundView = cellBGView
Any answer how to set background color of the cells which are selected?
任何答案如何设置所选单元格的背景颜色？
采纳答案by Somoy Das Gupta
Swift 4.2
斯威夫特 4.2
For multiple selections you need to set the UITableViewproperty allowsMultipleSelectionto true.
对于多项选择，您需要将该UITableView属性设置allowsMultipleSelection为true。
myTableView.allowsMultipleSelection = true
myTableView.allowsMultipleSelection = true
In case you subclassed the UITableViewCell, you override setSelected(_ selected: Bool, animated: Bool)method in your custom cell class.
如果您将UITableViewCell子类化，则您可以覆盖setSelected(_ selected: Bool, animated: Bool)自定义单元格类中的方法。
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
if selected {
contentView.backgroundColor = UIColor.green
} else {
contentView.backgroundColor = UIColor.blue
}
}
回答by OverD
All the above answers are fine but a bit to complex to my liking. The simplest way to do it is to put some code in the cellForRowAtIndexPath. That way you never have to worry about changing the color when the cell is deselected.
以上所有答案都很好，但在我看来有点复杂。最简单的方法是将一些代码放在cellForRowAtIndexPath. 这样您就不必担心在取消选择单元格时更改颜色。
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath)
/* this is where the magic happens, create a UIView and set its
backgroundColor to what ever color you like then set the cell's
selectedBackgroundView to your created View */
let backgroundView = UIView()
backgroundView.backgroundColor = YOUR_COLOR_HERE
cell.selectedBackgroundView = backgroundView
return cell
}
回答by D Kersnowski
This worked for me:
这对我有用：
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
var selectedCell:UITableViewCell = tableView.cellForRowAtIndexPath(indexPath)!
selectedCell.contentView.backgroundColor = UIColor.redColor()
}
// if tableView is set in attribute inspector with selection to multiple Selection it should work.
// Just set it back in deselect
override func tableView(tableView: UITableView, didDeselectRowAtIndexPath indexPath: NSIndexPath) {
var cellToDeSelect:UITableViewCell = tableView.cellForRowAtIndexPath(indexPath)!
cellToDeSelect.contentView.backgroundColor = colorForCellUnselected
}
//colorForCellUnselected is just a var in my class
回答by Ahmed Lotfy
Swift 3
斯威夫特 3
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "yourCellIdentifier", for: indexPath)
cell.selectionStyle = .none
return cell
}
Swift 2
斯威夫特 2
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "yourCellIdentifier", for: indexPath)
cell.selectionStyle = .None
return cell
}
回答by superarts.org
The problem with Kersnowski's approach is that when the cell is redrawn the changes made when it's selected/deselected will be gone. So I would move the changes into the cell itself, which means subclassing is required here. For example:
Kersnowski 方法的问题在于，重绘单元格时，选中/取消选中单元格时所做的更改将消失。所以我会将更改移动到单元格本身，这意味着这里需要子类化。例如：
class ICComplaintCategoryCell: UITableViewCell {
@IBOutlet var label_title: UILabel!
@IBOutlet var label_checkmark: UILabel!
override func layoutSubviews() {
super.layoutSubviews()
reload()
}
func reload() {
if isSelected {
contentView.backgroundColor = UIColor.red
}
else if isHighlighted{
contentView.backgroundColor = UIColor.red
}
else {
contentView.backgroundColor = UIColor.white
}
}
}
And in your table view delegate just call reload:
在您的表视图委托中只需调用reload：
if let cell = self.table.cellForRowAtIndexPath(path) as? ICComplaintCategoryCell {
cell.reload()
}
Updated for Swift 3+, thanks @Bogy
为 Swift 3+ 更新，感谢 @Bogy
回答by Despotovic
You can also set cell's selectionStyleto.nonein interface builder. The same solution as @AhmedLotfy provided, only from IB.
您还selectionStyle可以.none在界面构建器中将单元格设置为。与@AhmedLotfy 提供的解决方案相同，仅来自 IB。
回答by Doci
For Swift 3,4 and 5 you can do this in two ways.
对于 Swift 3,4 和 5，您可以通过两种方式执行此操作。
1) class: UITableViewCell
1）类：UITableViewCell
override func awakeFromNib() {
super.awakeFromNib()
//Costumize cell
selectionStyle = .none
}
or
或者
2) tableView cellForRowAt
2）tableView cellForRowAt
cell.selectionStyle = .none
If you want to set selection color for specific cell, check this answer: https://stackoverflow.com/a/56166325/7987502
如果要为特定单元格设置选择颜色，请查看此答案：https: //stackoverflow.com/a/56166325/7987502
回答by SNudel
UITableViewCellhas an attribute multipleSelectionBackgroundView.
https://developer.apple.com/documentation/uikit/uitableviewcell/1623226-selectedbackgroundview
UITableViewCell有一个属性multipleSelectionBackgroundView。
https://developer.apple.com/documentation/uikit/uitableviewcell/1623226-selectedbackgroundview
Just create an UIViewdefine the .backgroundColorof your choice and assign it to your cells .multipleSelectionBackgroundViewattribute.
只需创建一个您选择的UIView定义.backgroundColor并将其分配给您的单元格.multipleSelectionBackgroundView属性。
回答by Barath
Swift 3
斯威夫特 3
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let selectedCell:UITableViewCell = tableView.cellForRow(at: indexPath)!
selectedCell.contentView.backgroundColor = UIColor.darkGray
}
func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
let selectedCell:UITableViewCell = tableView.cellForRow(at: indexPath)!
selectedCell.contentView.backgroundColor = UIColor.clear
}
回答by Mr. JD Agrawal
By adding a custom view with the background color of your own you can have a custom selection style in table view.
通过添加具有您自己的背景颜色的自定义视图，您可以在表格视图中拥有自定义选择样式。
let customBGColorView = UIView()
customBGColorView.backgroundColor = UIColor(hexString: "#FFF900")
cellObj.selectedBackgroundView = customBGColorView
Add this 3 line code in cellForRowAt method of TableView. I have used an extension in UIColor to add color with hexcode. Put this extension code at the end of any Class(Outside the class's body).
在 TableView 的 cellForRowAt 方法中添加这 3 行代码。我在 UIColor 中使用了一个扩展来添加带有十六进制代码的颜色。将此扩展代码放在任何类的末尾（在类的主体之外）。
extension UIColor {
convenience init(hexString: String) {
let hex = hexString.trimmingCharacters(in: CharacterSet.alphanumerics.inverted)
var int = UInt32()
Scanner(string: hex).scanHexInt32(&int)
let a, r, g, b: UInt32
switch hex.characters.count {
case 3: // RGB (12-bit)
(a, r, g, b) = (255, (int >> 8) * 17, (int >> 4 & 0xF) * 17, (int & 0xF) * 17)
case 6: // RGB (24-bit)
(a, r, g, b) = (255, int >> 16, int >> 8 & 0xFF, int & 0xFF)
case 8: // ARGB (32-bit)
(a, r, g, b) = (int >> 24, int >> 16 & 0xFF, int >> 8 & 0xFF, int & 0xFF)
default:
(a, r, g, b) = (255, 0, 0, 0)
}
self.init(red: CGFloat(r) / 255, green: CGFloat(g) / 255, blue: CGFloat(b) / 255, alpha: CGFloat(a) / 255)
}
}
