[英]Add shadow to every section in grouped table view
如圖所示,我想為我的表格視圖部分添加陰影。 就像表格視圖有 4 個部分一樣,表格視圖中會有 4 個陰影視圖。
func numberOfSections(in tableView: UITableView) -> Int { return 3 }
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 3
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
switch processIndex {
return cell
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 44
}
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
return UIView
}
func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
return 40
}
有一種更簡單的方法可以顯示每個部分的陰影。
UIColor.clear
Inset Grouped
樣式,這也會為每個部分添加角)給表格視圖添加陰影:
tableView.layer.masksToBounds = false
tableView.layer.shadowColor = UIColor.black.withAlphaComponent(0.4).cgColor // any value you want
tableView.layer.shadowOpacity = 1 // any value you want
tableView.layer.shadowRadius = 100 // any value you want
tableView.layer.shadowOffset = .init(width: 0, height: 10) // any value you want
我試過自定義[String : UIView]
。 這將適用於最少的行數。 如果您的單元的設計是靜態的,這將滿足您的設計。 如果要訪問UITableViewCell
中的某些屬性,則必須使用子視圖。
lookView
)。UIView
。UITapGesture
到TableView
。 TableView
格式為Grouped
, Separator
為.none
。以下代碼將給出如下輸出:
//Global Variable:
@IBOutlet weak var tblVw: UITableView!
var rowItemsDict = [String : [String]]()
var rowHeight = [String : CGFloat]()
var eachRowSubViews = [String : UIView]()
override func viewDidAppear(_ animated: Bool) {
rowItemsDict = ["0" : ["welcome", "hello", "wow", "Good", "Bad"], "1" : ["Asia", "Europe", "America"], "2" : ["Mcdonald", "Pizza", "Fries"]]
for i in 0..<rowItemsDict.count
{
let numOfSubItemsArr : [String] = rowItemsDict[String(i)]!
let eachRowHeight : CGFloat = getShadowViewHeight(defaultHeight: 44.0, numberOfItems: numOfSubItemsArr.count)
var subArrView = UIView()
for j in 0..<numOfSubItemsArr.count
{
let sublabel = UILabel(frame: CGRect(x: 0, y: 0, width: tblVw.frame.size.width - 42, height: 39))
sublabel.text = numOfSubItemsArr[j]
sublabel.isUserInteractionEnabled = true
sublabel.textAlignment = .right
sublabel.textColor = UIColor.red
let subView = UIView(frame: CGRect(x: 0, y: CGFloat((j * 40)), width: tblVw.frame.size.width, height: 39))
subView.addSubview(sublabel)
subView.backgroundColor = UIColor.clear
subView.tag = ((i+1) * 100) + j
if j == (numOfSubItemsArr.count - 1)
{
}
else
{
let LinesubView = UIView(frame: CGRect(x: 0, y: 38, width: tblVw.frame.size.width - 8, height: 1))
LinesubView.backgroundColor = UIColor.lightGray.withAlphaComponent(0.2)
subView.addSubview(LinesubView)
}
subView.isUserInteractionEnabled = true
subArrView.addSubview(subView)
subArrView.isUserInteractionEnabled = true
}
eachRowSubViews[String(i)] = subArrView
rowHeight[String(i)] = eachRowHeight
}
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(tapEachView))
tblVw.addGestureRecognizer(tapGesture)
tblVw.reloadData()
}
// TABLEVIEW DELEGATES
func numberOfSections(in tableView: UITableView) -> Int {
return rowItemsDict.count
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 1
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! SampleTableViewCell
print("\n\ncellFor")
cell.backgroundColor = UIColor(red: 240/255, green: 240/255, blue: 240/255, alpha: 0.0)
cell.separatorVw.backgroundColor = UIColor(red: 250/255, green: 250/255, blue: 250/255, alpha: 0.0)
tableView.clipsToBounds = true
let gettingVw : UIView = eachRowSubViews[String(indexPath.section)]!
cell.lookVw.addSubview(gettingVw)
cell.lookVw.layer.cornerRadius = 10
cell.separatorVw.backgroundColor = UIColor.clear
cell.selectionStyle = .none
return cell
}
func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
let cell = cell as! SampleTableViewCell
cell.lookVw.dropOnlyOneShadowLeft(getSize: CGSize.zero)
cell.lookVw.backgroundColor = UIColor.white
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return (rowHeight[String(indexPath.section)]! )
}
//ROW HEIGHT CALCULATION
func getShadowViewHeight(defaultHeight: CGFloat, numberOfItems: Int) -> CGFloat
{
let requiredHeight = CGFloat(Int(defaultHeight) * numberOfItems)
return requiredHeight
}
//TAP GESTURE ACTION
@objc func tapEachView(sender: UITapGestureRecognizer)
{
let touchPoint = sender.location(in: tblVw)
let index = tblVw.indexPathForRow(at: touchPoint)
if (index == nil)
{
print("long press on table view but not on a row");
}
else
{
let cell = tblVw.cellForRow(at: index!) as! SampleTableViewCell
let pointInCell = cell.convert(touchPoint, from: tblVw)
let innerSubVw = cell.lookVw.subviews
print("pointInCellpointInCell) ", pointInCell)
for sVw in innerSubVw[0].subviews
{
let pointY = pointInCell.y - 5
let comparePoint = sVw.frame.origin.y
if pointY >= comparePoint && pointY <= comparePoint + 39
{
print("sVwsVwsVwsVwsVw ", sVw.tag)
//DO YOUR ACTION IN RESPECTIVE VIEW CLICK
return
}
}
}
}
extension UIView {
func dropOnlyOneShadowLeft(getSize: CGSize) {
self.layer.shadowColor = UIColor.lightGray.cgColor
self.layer.shadowOpacity = 0.6
self.layer.shadowOffset = getSize
self.layer.shadowRadius = 3
}
}
這將只為部分設置陰影,而不是頁眉/頁腳:
tableView.backgroundColor = .clear
tableView.subviews.forEach { view in
view.layer.shadowColor = UIColor.darkGray.cgColor
view.layer.shadowOpacity = 0.4
view.layer.shadowOffset = .zero
view.layer.shadowRadius = 3
}
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