当我滚动 UiTableView 时,TextLabel 颜色自动改变
TextLabel colour automatically changed when i Scroll UiTableView
我在 didSelectRowAt
上更改文本标签颜色,但是当我滚动 UITableView
时它也会影响其他 textlabel
也
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let cell = tableView.cellForRow(at: indexPath) as! TableViewCell
if (cell.LBLIntrest.textColor == (UIColor.black))
{
cell.LBLIntrest.textColor = Uicolor.blue
} else {
cell.LBLIntrest.textColor = Uicolor.black
}
}
这应该适合你。
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let cell = tableView.cellForRow(at: indexPath) as! TableViewCell
setSelectedColor(cell: cell)
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
...
...
if let selectedRows = tableView.indexPathsForSelectedRows, selectedRows.contains(indexPath) {
setSelectedColor(cell: cell)
}
return cell
}
func setSelectedColor(cell: UITableViewCell) {
if (cell.LBLIntrest.textColor == (UIColor.black)) {
cell.LBLIntrest.textColor = Uicolor.blue
} else {
cell.LBLIntrest.textColor = Uicolor.black
}
}
但是,我建议将 cell.LBLIntrest.textColor = Uicolor.blue
移动到 func setSelected(_ selected: Bool, animated: Bool)
方法
下的 UITableViewCell
class TableViewCell: UITableViewCell {
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// label textColor logic goes here
// make use of selected
}
}
首先,您必须创建 属性 来容纳 selected 单元格,如下所示
/* To hold selected cell */
var selectedIndexPath :IndexPath?
然后在 cellForRowAt 中设置 selected 单元格的颜色
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if let cell = tableView.dequeueReusableCell(withIdentifier: "cell") {
cell.textLabel?.text = "Row Number: \(indexPath.row)"
/* Check if cell is selected then set layout accourding to your requirements */
if indexPath == selectedIndexPath {
cell.textLabel?.textColor = .blue
} else {
cell.textLabel?.textColor = .black
}
return cell
}
return UITableViewCell()
}
在此之后当用户 select 在 didSelectRowAt
中管理一个单元格时
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
// Toggle if user seleted same cell
if selectedIndexPath == indexPath {
if let cell = tableView.cellForRow(at: indexPath) {
/* Check and toggle selected cell color */
cell.textLabel?.textColor = cell.textLabel?.textColor == .black ? .blue : .black
}
} else {
/* set color of seleted cell */
if let cell = tableView.cellForRow(at: indexPath) {
cell.textLabel?.textColor = .blue
}
}
/* Save which cell is selected */
selectedIndexPath = indexPath
}
最后管理 didDeselectRowAt
override func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
/* Remove if deselect same cell */
if selectedIndexPath == indexPath {
selectedIndexPath = nil
}
/* Change color to black */
if let cell = tableView.cellForRow(at: indexPath) {
cell.textLabel?.textColor = .black
}
}
此代码一次用于单元格 selection,因此您必须设置
tableView.allowsMultipleSelection = false
希望这对您有所帮助。
我在 didSelectRowAt
上更改文本标签颜色,但是当我滚动 UITableView
时它也会影响其他 textlabel
也
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let cell = tableView.cellForRow(at: indexPath) as! TableViewCell
if (cell.LBLIntrest.textColor == (UIColor.black))
{
cell.LBLIntrest.textColor = Uicolor.blue
} else {
cell.LBLIntrest.textColor = Uicolor.black
}
}
这应该适合你。
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let cell = tableView.cellForRow(at: indexPath) as! TableViewCell
setSelectedColor(cell: cell)
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
...
...
if let selectedRows = tableView.indexPathsForSelectedRows, selectedRows.contains(indexPath) {
setSelectedColor(cell: cell)
}
return cell
}
func setSelectedColor(cell: UITableViewCell) {
if (cell.LBLIntrest.textColor == (UIColor.black)) {
cell.LBLIntrest.textColor = Uicolor.blue
} else {
cell.LBLIntrest.textColor = Uicolor.black
}
}
但是,我建议将 cell.LBLIntrest.textColor = Uicolor.blue
移动到 func setSelected(_ selected: Bool, animated: Bool)
方法
UITableViewCell
class TableViewCell: UITableViewCell {
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// label textColor logic goes here
// make use of selected
}
}
首先,您必须创建 属性 来容纳 selected 单元格,如下所示
/* To hold selected cell */
var selectedIndexPath :IndexPath?
然后在 cellForRowAt 中设置 selected 单元格的颜色
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if let cell = tableView.dequeueReusableCell(withIdentifier: "cell") {
cell.textLabel?.text = "Row Number: \(indexPath.row)"
/* Check if cell is selected then set layout accourding to your requirements */
if indexPath == selectedIndexPath {
cell.textLabel?.textColor = .blue
} else {
cell.textLabel?.textColor = .black
}
return cell
}
return UITableViewCell()
}
在此之后当用户 select 在 didSelectRowAt
中管理一个单元格时override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
// Toggle if user seleted same cell
if selectedIndexPath == indexPath {
if let cell = tableView.cellForRow(at: indexPath) {
/* Check and toggle selected cell color */
cell.textLabel?.textColor = cell.textLabel?.textColor == .black ? .blue : .black
}
} else {
/* set color of seleted cell */
if let cell = tableView.cellForRow(at: indexPath) {
cell.textLabel?.textColor = .blue
}
}
/* Save which cell is selected */
selectedIndexPath = indexPath
}
最后管理 didDeselectRowAt
override func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
/* Remove if deselect same cell */
if selectedIndexPath == indexPath {
selectedIndexPath = nil
}
/* Change color to black */
if let cell = tableView.cellForRow(at: indexPath) {
cell.textLabel?.textColor = .black
}
}
此代码一次用于单元格 selection,因此您必须设置
tableView.allowsMultipleSelection = false
希望这对您有所帮助。