如何知道UITableView行號我有一個UITableViewCell帶著UISwitch作為每個單元格的輔助視圖。當我在單元格中更改開關的值時，如何知道開關在哪一行？我需要切換值更改事件中的行號。
3 回答
ibeautiful
TA貢獻1993條經驗 獲得超6個贊
tagtableView:cellForRowAtIndexPath:
superviewUISwitchUITableViewCellUITableView
static NSIndexPath *indexPathForView(UIView *view) {
while (view && ![view isKindOfClass:[UITableViewCell class]])
view = view.superview;
if (!view)
return nil;
UITableViewCell *cell = (UITableViewCell *)view;
while (view && ![view isKindOfClass:[UITableView class]])
view = view.superview;
if (!view)
return nil;
UITableView *tableView = (UITableView *)view;
return [tableView indexPathForCell:cell];}tableView:cellForRowAtIndexPath:.
慕雪6442864
TA貢獻1812條經驗 獲得超5個贊
tag
extension Int {
public init(indexPath: IndexPath) {
var marshalledInt: UInt32 = 0xffffffff
let rowPiece = UInt16(indexPath.row)
let sectionPiece = UInt16(indexPath.section)
marshalledInt = marshalledInt & (UInt32(rowPiece) << 16)
marshalledInt = marshalledInt + UInt32(sectionPiece)
self.init(bitPattern: UInt(marshalledInt))
}
var indexPathRepresentation: IndexPath {
let section = self & 0x0000ffff
let pattern: UInt32 = 0xffff0000
let row = (UInt32(self) & pattern) >> 16
return IndexPath(row: Int(row), section: Int(section))
}}tableView(_:, cellForRowAt:)
cell.yourSwitch.tag = Int(indexPath: indexPath)
func didToogle(sender: UISwitch){
print(sender.tag.indexPathRepresentation)}{section area length}{all remaining}[4 BITS: section area length - 1]- 3 回答
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