一、单按钮左滑动删除(IOS8之前)
只要实现了- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath;这个代理方法就拥有了滑动删除的功能
单按钮滑动删除方法一：
//滑动删除执行的代理方法
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
NSLog(@"点击左滑出现的Delete按钮执行的操作");
[_array removeObjectAtIndex:indexPath.row];
[self.tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationTop];
}
//修改默认Delete按钮的文字
- (NSString *)tableView:(UITableView *)tableView titleForDeleteConfirmationButtonForRowAtIndexPath:(NSIndexPath *)indexPath
{
return@"删除";
}
二、多按钮组左滑动删除(IOS8之后)
我们在使用一些应用的时候，在滑动一些联系人的某一行的时候，会出现删除、置顶、更多等等的按钮，在iOS8之前，我们都需要自己去实现。但是，到了iOS8，，只需要一个代理方法和一个类就搞定了
- (NSArray<UITableViewRowAction *> *)tableView:(UITableView *)tableView editActionsForRowAtIndexPath:(NSIndexPath *)indexPath
{ UITableViewRowAction *action = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleNormal title:@"关注"handler:^(UITableViewRowAction *_Nonnullaction, NSIndexPath *_NonnullindexPath) {
NSLog(@"点击了删除");
// 1. 更新数据
[DataArray removeObjectAtIndex:indexPath.row];
// 2. 更新UI
[tableView deleteRowsAtIndexPaths:@[indexPath]withRowAnimation:UITableViewRowAnimationAutomatic];
}];
action.backgroundColor=[UIColor greenColor];
UITableViewRowAction *action1 = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDestructive title:@"删除"handler:^(UITableViewRowAction *_Nonnullaction, NSIndexPath *_NonnullindexPath) {
}];
UITableViewRowAction *action2 = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDefault title:@"置顶"handler:^(UITableViewRowAction *_Nonnullaction, NSIndexPath *_NonnullindexPath) {
}];
return@[action1,action,action2];
}
单按钮左滑动删除只需要返回一个元素的数组就行了，因此单按钮滑动删除方法二就来了
单按钮滑动删除方法二：-(NSArray<UITableViewRowAction*>*)tableView:(UITableView*)tableView editActionsForRowAtIndexPath:(NSIndexPath*)indexPath{UITableViewRowAction*action=[UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleNormal title:@"关注"handler:^(UITableViewRowAction*_Nonnull action,NSIndexPath*_Nonnull indexPath){NSLog(@"点击了关注");}];action.backgroundColor=[UIColor greenColor];return@[action];}
三、IOS11新增的滑动删除
IOS11新增了两个代理方法，可以给这些按钮添加图片了。如果实现了新增的Swipe actions的代理方法将会取代(tableView: editActionsForRowAtIndexPath:)
1.向左滑动在右边显示
-(UISwipeActionsConfiguration*)tableView:(UITableView*)tableView trailingSwipeActionsConfigurationForRowAtIndexPath:(NSIndexPath*)indexPath
使用说明：
- (UISwipeActionsConfiguration *)tableView:(UITableView *)tableView trailingSwipeActionsConfigurationForRowAtIndexPath:(NSIndexPath *)indexPath{
/* UIContextualActionStyle有两种类型:
UIContextualActionStyleNormal,//置顶、删除、已读都可以使用该类型
UIContextualActionStyleDestructive//删除类型可使用，从左到右一直滑cell,不用点击删除按钮就可以直接执行删除操作
*/
//1.创建UIContextualAction对象
UIContextualAction *deleteRowAction = [UIContextualAction contextualActionWithStyle:UIContextualActionStyleDestructive title:@"delete"handler:^(UIContextualAction *_Nonnullaction,__kindofUIView *_NonnullsourceView,void(^_NonnullcompletionHandler)(BOOL)) {
//[self.titleArr removeObjectAtIndex:indexPath.row];
completionHandler (YES);
}];
//2.给滑动按钮添加背景、图片
deleteRowAction.image = [UIImage imageNamed:@"icon_del"];
deleteRowAction.backgroundColor = [UIColor blueColor];
//3.返回滑动按钮
UISwipeActionsConfiguration *config = [UISwipeActionsConfiguration configurationWithActions:@[deleteRowAction]];
returnconfig;
}
2、向右滑动在左边显示（新增的右滑功能，以前都是左滑）
左滑是系统删除按钮，右滑是自定义的滑动按钮
- (UISwipeActionsConfiguration *)tableView:(UITableView *)tableView leadingSwipeActionsConfigurationForRowAtIndexPath:(NSIndexPath *)indexPath{
UIContextualAction *deleteRowAction = [UIContextualAction contextualActionWithStyle:UIContextualActionStyleNormal title:@"取消"handler:^(UIContextualAction *_Nonnullaction,__kindofUIView *_NonnullsourceView,void(^_NonnullcompletionHandler)(BOOL)) {
//[self.titleArr removeObjectAtIndex:indexPath.row];
completionHandler (YES);
}];
deleteRowAction.image = [UIImage imageNamed:@"icon_del"];
deleteRowAction.backgroundColor = [UIColor blueColor];
UIContextualAction *RowAction1 = [UIContextualAction contextualActionWithStyle: UIContextualActionStyleNormal title:@"关注"handler:^(UIContextualAction *_Nonnullaction,__kindofUIView *_NonnullsourceView,void(^_NonnullcompletionHandler)(BOOL)) {
//[self.titleArr removeObjectAtIndex:indexPath.row];
completionHandler (YES);
}];
RowAction1.image = [UIImage imageNamed:@"icon_del"];
RowAction1.backgroundColor = [UIColor greenColor];
UISwipeActionsConfiguration *config = [UISwipeActionsConfiguration configurationWithActions:@[deleteRowAction,RowAction1]];
returnconfig;
}
