完全滑动UITableViewCell以删除UITableView iOS 8 [英] Full swipe UITableViewCell to delete UITableView iOS 8
问题描述
我想模仿滑动删除UITableViewCell的功能，就像iOS 8中的邮件应用程序一样。我不是指滑动以显示删除按钮。我指的是当你刷卡时，它会破坏3个动作，但是如果你继续向左滑动，那么电子邮件就会被删除。
I'd like to mimic the swipe to delete function of a UITableViewCell just like the mail app in iOS 8. I'm not referring to swipe to reveal a delete button. I'm referring to when you swipe, it discoloses 3 actions, but if you keep swiping to the left, the email is deleted.
在iOS 8中，UITableView有一种新方法，您可以在其中提供数据以显示任意数量的按钮：
In iOS 8, UITableView has a new method where you can provide the data to display any number of buttons:
#ifdef __IPHONE_8_0
- (NSArray *)tableView:(UITableView *)tableView editActionsForRowAtIndexPath:(NSIndexPath *)indexPath{
UITableViewRowAction *viewStackRowAction = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDefault title:@"Stack" handler:^(UITableViewRowAction *action, NSIndexPath *indexPath) {
SM_LOG_DEBUG(@"View Stack Action");
}];
viewStackRowAction.backgroundColor = [UIColor radiusBlueColor];
UITableViewRowAction *viewUserRowAction = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDefault title:@"User" handler:^(UITableViewRowAction *action, NSIndexPath *indexPath) {
SM_LOG_DEBUG(@"View User Action");
}];
viewUserRowAction.backgroundColor = [UIColor radiusLightBlueColor];
UITableViewRowAction *deleteRowAction = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDefault title:@"Delete" handler:^(UITableViewRowAction *action, NSIndexPath *indexPath) {
SM_LOG_DEBUG(@"Delete");
}];
deleteRowAction.backgroundColor = [UIColor redColor];
return @[deleteRowAction, viewUserRowAction, viewStackRowAction];
}
#endif
我没有看到任何用于检测的API你继续刷卡。我在UITableView.h中使用了8_0，上面的方法似乎是唯一的新方法。
I don't see any API to detect if you keep swiping though. I've grepped for 8_0 in UITableView.h and the above method seems to be the only new one.
我想可以监视滚动视图偏移，或添加/劫持UIPanGestureRecognizer。我只是想确保使用默认方式，如果有一个（并获得动画为免费）
I suppose one could monitor the scroll view offset, or add/hijack a UIPanGestureRecognizer. I just wanted to make sure to use the default way, if there is one (and get the animation for "free")
推荐答案
使用Swift 4和iOS 11，根据您的需要，您可以选择以下 3种方式之一来创建拖尾滑动操作，该操作将删除所选的 UITableViewCell 。
With Swift 4 and iOS 11, according to your needs, you can choose one of the 3 following ways in order to create a trailing swipe action that will delete the selected UITableViewCell.
import UIKit
class TableViewController: UITableViewController {
var numbers = [Int](0..<10)
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return numbers.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
cell.textLabel?.text = "\(numbers[indexPath.row])"
return cell
}
override func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
if (editingStyle == UITableViewCellEditingStyle.delete) {
self.numbers.remove(at: indexPath.row)
tableView.deleteRows(at: [indexPath], with: .fade)
}
}
}
＃2。使用 UITableViewRowAction
#2. Using UITableViewRowAction
import UIKit
class TableViewController: UITableViewController {
var numbers = [Int](0..<10)
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return numbers.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
cell.textLabel?.text = "\(numbers[indexPath.row])"
return cell
}
override func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
// Intentionally blank in order to be able to use UITableViewRowActions
}
override func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? {
let deleteHandler: (UITableViewRowAction, IndexPath) -> Void = { _, indexPath in
self.numbers.remove(at: indexPath.row)
tableView.deleteRows(at: [indexPath], with: .fade)
}
let deleteAction = UITableViewRowAction(style: UITableViewRowActionStyle.destructive, title: "Delete", handler: deleteHandler)
// Add more actions here if required
return [deleteAction]
}
}
＃3。使用 UIContextualAction （需要iOS 11）
#3. Using UIContextualAction (requires iOS 11)
import UIKit
class TableViewController: UITableViewController {
var numbers = [Int](0..<10)
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return numbers.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
cell.textLabel?.text = "\(numbers[indexPath.row])"
return cell
}
override func tableView(_ tableView: UITableView, trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
let handler: UIContextualActionHandler = { (action: UIContextualAction, view: UIView, completionHandler: ((Bool) -> Void)) in
self.numbers.remove(at: indexPath.row)
tableView.deleteRows(at: [indexPath], with: .fade)
completionHandler(true)
}
let deleteAction = UIContextualAction(style: UIContextualAction.Style.destructive, title: "Delete", handler: handler)
// Add more actions here if required
let configuration = UISwipeActionsConfiguration(actions: [deleteAction])
configuration.performsFirstActionWithFullSwipe = true // The default value of this property is true.
return configuration
}
}
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