iOS tableView滑动出现多个按钮

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

- (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

- (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

- (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

-(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

-(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

- (NSArray *)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];
}