本文授权转载，作者：@夏天是个大人了
前言: 本篇博客其实就是想介绍tableviewcell滑动的一些"事"，昨天在逛github的时候看到的还挺有意思的三方库，简单用了一下感觉不错，一作为记录，二是希望有类似需求的可以得到帮助。
本篇介绍了iOS 5之后(使用三方库) iOS 8之后(系统方法)分别的实现方式
效果图 - ios>= 5.0
效果图 - ios>= 8.0
MGSwipeTableCell(Github上的三方库)- iOS >= 5.0
直接使用比较简单 通过代码看一下
首先签这个协议MGSwipeTableCellDelegate
添加左边按钮方法
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- (NSArray *)btnLeftCount:(int)count{ NSMutableArray *result = [NSMutableArray array]; UIColor *colors[3] = {[UIColor greenColor], [UIColor colorWithRed:0 green:0x99/255.0 blue:0xcc/255.0 alpha:1.0], [UIColor colorWithRed:0.59 green:0.29 blue:0.08 alpha:1.0]};; for (int i = 0; i < count; i ++) { // 按钮提供了几个方法, 可以点进去看一看 MGSwipeButton *btn = [MGSwipeButton buttonWithTitle:@"" backgroundColor:colors[i] padding:15 callback:^BOOL(MGSwipeTableCell *sender) { return YES; }]; // 把按钮加到数组中 [result addObject:btn]; } return result;} |
添加右边按钮的方法
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- (NSArray *)btnRightCount:(int)count{ NSMutableArray *result = [NSMutableArray array]; NSArray *titleArray = @[@"删除", @"标记未读"]; UIColor *color[2] = {[UIColor redColor], [UIColor lightGrayColor]}; for (int i = 0; i < count; i ++) { MGSwipeButton *btn = [MGSwipeButton buttonWithTitle:titleArray[i] backgroundColor:color[i] padding:15 callback:^BOOL(MGSwipeTableCell *sender) { BOOL autoHide = i != 0; return autoHide; }]; // 把按钮加到数组中 [result addObject:btn]; } return result;} |
重用池可以这样写
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- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{ static NSString *cellID = @"cellId"; // 这里如果MGSwipeTableCell是足够你使用的, 你可以直接使用 // 或者自定义创建cell继承于MGSwipeTableCell, 像我下面代码这样 XTCustomCell *cell = [tableView dequeueReusableCellWithIdentifier:cellID]; if (!cell) { cell = [[XTCustomCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellID]; } cell.label.text = [NSString stringWithFormat:@"%ld------%@", (long)indexPath.row, self.arrayTest[indexPath.row]]; cell.label.font = [UIFont systemFontOfSize:20]; // 指定代理人 cell.delegate = self; // NO: 只有单个可以滑动 , YES: 多个可以滑动 cell.allowsMultipleSwipe = NO; return cell;} |
添加按钮
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-(NSArray*) swipeTableCell:(MGSwipeTableCell*) cell swipeButtonsForDirection:(MGSwipeDirection)direction swipeSettings:(MGSwipeSettings*) swipeSettings expansionSettings:(MGSwipeExpansionSettings*) expansionSettings;{ if (direction == MGSwipeDirectionRightToLeft) { return [self btnRightCount:2]; } else { return [self btnLeftCount:3]; }} |
按钮的点击代理方法
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-(BOOL) swipeTableCell:(MGSwipeTableCell*) cell tappedButtonAtIndex:(NSInteger) index direction:(MGSwipeDirection)direction fromExpansion:(BOOL) fromExpansion{ switch (direction) { case MGSwipeDirectionLeftToRight: { if (index == 0) { NSLog(@"right ------- 0"); }else{ NSLog(@"right ------- 1"); } break; } case MGSwipeDirectionRightToLeft: { if (index == 0) { NSLog(@"left ------- 0"); // 这里简单的做了个删除操作 NSIndexPath * path = [_tableView indexPathForCell:cell]; [_arrayTest removeObjectAtIndex:path.row]; [_tableView deleteRowsAtIndexPaths:@[path] withRowAnimation:UITableViewRowAnimationLeft]; return NO; }else{ NSLog(@"left ------- 1"); } break; } } return YES;} |
iOS 8之后也提供了类似的实现
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- (NSArray<uitableviewrowaction *> *)tableView:(UITableView *)tableView editActionsForRowAtIndexPath:(NSIndexPath *)indexPath{ UITableViewRowAction *deleteRowAction = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDestructive title:@"删除" handler:^(UITableViewRowAction * _Nonnull action, NSIndexPath * _Nonnull indexPath) { [self.arrayTest removeObjectAtIndex:indexPath.row]; [self.tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic]; }]; UITableViewRowAction *topRowAction = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDefault title:@"置顶" handler:^(UITableViewRowAction * _Nonnull action, NSIndexPath * _Nonnull indexPath) { [self.arrayTest exchangeObjectAtIndex:indexPath.row withObjectAtIndex:0]; NSIndexPath *firstIndexPath = [NSIndexPath indexPathForRow:0 inSection:indexPath.section]; [tableView moveRowAtIndexPath:indexPath toIndexPath:firstIndexPath]; }]; topRowAction.backgroundColor = [UIColor blueColor]; UITableViewRowAction *moreRowAction = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleNormal title:@"更多" handler:^(UITableViewRowAction * _Nonnull action, NSIndexPath * _Nonnull indexPath) { [self.tableView reloadRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationMiddle]; }]; return @[deleteRowAction,topRowAction,moreRowAction]; |