今天愚人节,小伙们,愚人节快乐!
实现一个小功能,滑动菜单,显示隐藏的功能菜单, 先上图:
这里尝试用了下使用三个方式来实现了这个功能:
1、使用自定义UITableViewCell + UISwipeGestureRecognizer + 代理 实现;
2、使用自定义UITableViewCell + UIPanGestureRecognizer + 代理 实现;
3、使用自定义UITableViewCell + UISwipeGestureRecognizer + block 实现。
注意点: 使用UIPanGestureRecognizer手势实现左滑的时候,由于拖拽手势的方向随意性,导致与UITableViewController的下拉刷新手势冲突了!
感觉还是用UISwipeGestureRecognizer清扫手势实现好点!
部分代码:
1、使用UISwipeGestureRecognizer + Delegate
自定义UITableViewCell部分代码:
1 // 2 // TanTableViewCell.h 3 // Tan_SwipeTableViewCell 4 // 5 // Created by PX_Mac on 16/3/25. 6 // Copyright © 2016年 PX_Mac. All rights reserved. 7 // 8 9 #import <UIKit/UIKit.h> 10 @class MemberModel; 11 @class TanTableViewCell; 12 13 @protocol TanTableViewCellDelegate <NSObject> 14 15 @optional 16 - (void)deleteMember: (TanTableViewCell *)cell; //协议方法:删除会员 17 - (void)closeOtherCellLeftSwipe; //关闭其他单元格的左滑 18 19 @end 20 21 @interface TanTableViewCell : UITableViewCell 22 23 //静态构造方法 24 + (instancetype)cellWithTableView: (UITableView *)tableView; 25 26 @property (nonatomic, strong) MemberModel *model; //模型属性 27 @property (nonatomic, weak) id<TanTableViewCellDelegate> delegate; //代理 28 29 - (void)setData: (MemberModel *)model; //设置要显示的数据 30 - (void)closeSwipe; //关闭滑动,恢复原样(用于在滑动当前单元格时,把其他已经左滑的单元格关闭) 31 32 @end
@implementation TanTableViewCell + (instancetype)cellWithTableView:(UITableView *)tableView{ static NSString *reuseIdentity = @"tanCell"; TanTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:reuseIdentity]; if (cell == nil){ cell = [[TanTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:reuseIdentity]; } return cell; } - (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier{ if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]){ [self initSubControls]; //初始化子控件 } return self; } //初始化子控件 - (void)initSubControls{ /*....... */ //3、给容器containerView绑定左右滑动清扫手势 UISwipeGestureRecognizer *leftSwipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipe:)]; leftSwipe.direction = UISwipeGestureRecognizerDirectionLeft; //设置向左清扫 [self.containerView addGestureRecognizer:leftSwipe]; UISwipeGestureRecognizer *rightSwipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipe:)]; rightSwipe.direction = UISwipeGestureRecognizerDirectionRight;//设置向右清扫 [self.containerView addGestureRecognizer:rightSwipe]; self.selectionStyle = UITableViewCellSelectionStyleNone; //设置单元格选中样式 [self.contentView bringSubviewToFront:self.containerView]; //设置containerView显示在最上层 } //左滑动和右滑动手势 - (void)swipe: (UISwipeGestureRecognizer *)sender { if (sender.direction == UISwipeGestureRecognizerDirectionLeft){ if (self.isOpenLeft) return; //已经打开左滑,不再执行 //开始左滑: 先调用代理关闭其他cell的左滑 if ([self.delegate respondsToSelector:@selector(closeOtherCellLeftSwipe)]) [self.delegate closeOtherCellLeftSwipe]; [UIView animateWithDuration:0.5 animations:^{ sender.view.center = CGPointMake(0, CELLHEIGHT * 0.5); }]; self.isOpenLeft = YES; } else if (sender.direction == UISwipeGestureRecognizerDirectionRight){ [self closeSwipe]; //关闭左滑 } } //关闭左滑,恢复原状 - (void)closeSwipe{ if (!self.isOpenLeft) return; //还未打开左滑,不需要执行右滑 [UIView animateWithDuration:0.5 animations:^{ self.containerView.center = CGPointMake(SCREENWIDTH * 0.5, CELLHEIGHT * 0.5); }]; self.isOpenLeft = NO; } //..... @end
控制器部分代码:
#pragma mark - UITableViewDataSource - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{ return self.dataArr.count; } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{ TanTableViewCell *cell = [TanTableViewCell cellWithTableView:tableView]; cell.delegate = self; MemberModel *model = [self.dataArr objectAtIndex:indexPath.row]; [cell setData:model]; return cell; } #pragma mark - cell代理方法 //删除单元格 - (void)deleteMember:(TanTableViewCell *)cell{ NSIndexPath *path = [self.tableView indexPathForCell:cell]; //获取cell所在位置 //删除数组中数据 [self.dataArr removeObjectAtIndex:path.row]; //删除单元格 [self.tableView deleteRowsAtIndexPaths:@[path] withRowAnimation:UITableViewRowAnimationLeft]; } //关闭其他cell的左滑 - (void)closeOtherCellLeftSwipe{ //循环显示的cell for (TanTableViewCell *item in self.tableView.visibleCells) { [item closeSwipe]; } }
2、UIPanGestureRecognizer + 代理
自定义UITableViewCell部分代码:
1 //初始化子控件 2 - (void)initSubControls{ 3 /* ...... */ 4 5 //3、给容器containerView绑定拖动手势 6 UIPanGestureRecognizer *panGes = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(pan:)]; 7 [self.containerView addGestureRecognizer:panGes]; 8 self.panGes = panGes; 9 10 self.selectionStyle = UITableViewCellSelectionStyleNone; //设置单元格选中样式 11 [self.contentView bringSubviewToFront:self.containerView]; //设置containerView显示在最上层 12 } 13 14 15 //拖动手势(拖拽手势和UITableView的下拉刷新手势有冲突,造成下拉刷新不能使用) 16 - (void)pan: (UIPanGestureRecognizer *)sender 17 { 18 //动画结束时修正位置 19 if (sender.state == UIGestureRecognizerStateEnded){ 20 21 //关闭其他cell的左拖拽 22 if ([self.delegate respondsToSelector:@selector(closeOtherCellLeftPan:)]) 23 [self.delegate closeOtherCellLeftPan: self]; 24 25 if (sender.view.frame.origin.x < -SCREENWIDTH * 0.25){ 26 sender.view.transform = CGAffineTransformMakeTranslation(-SCREENWIDTH * 0.5, 0); 27 [sender setTranslation:CGPointZero inView:sender.view]; //必须归0 28 } 29 else{ 30 [self closeLeftPan]; 31 } 32 } 33 34 CGPoint point = [sender translationInView:self.contentView]; 35 36 CGFloat tx = sender.view.transform.tx; 37 38 if (tx < - SCREENWIDTH * 0.5 || tx > 0) return; 39 40 //形变 41 sender.view.transform = CGAffineTransformTranslate(sender.view.transform, point.x, 0); 42 [sender setTranslation:CGPointZero inView:sender.view]; //必须归0 43 } 44 45 //关闭左拖拽 46 - (void)closeLeftPan{ 47 self.panGes.view.transform = CGAffineTransformMakeTranslation(0, 0); 48 [self.panGes setTranslation:CGPointZero inView:self.panGes.view]; //必须归0 49 }
3、UISwipeGestureRecognizer + block
自定义UITableViewCell部分代码:
1 // 2 // TanTableViewCell.h 3 // Tan_SwipeTableViewCell 4 // 5 // Created by PX_Mac on 16/3/25. 6 // Copyright © 2016年 PX_Mac. All rights reserved. 7 // 8 9 #import <UIKit/UIKit.h> 10 @class MemberModel; 11 12 @interface TanTableViewCell : UITableViewCell 13 14 //静态构造方法 15 + (instancetype)cellWithTableView: (UITableView *)tableView; 16 17 @property (nonatomic, strong) MemberModel *model; //模型属性 18 - (void)setData: (MemberModel *)model; //设置要显示的数据 19 20 @property (nonatomic, copy) void (^deleteMember)(); //删除会员block回调方法 21 @property (nonatomic, copy) void (^closeOtherCellSwipe)(); //关闭其他cell的左滑 22 23 - (void)closeLeftSwipe; //关闭左滑 24 25 @end
1 //左滑动和右滑动手势 2 - (void)swipe: (UISwipeGestureRecognizer *)sender 3 { 4 if (sender.direction == UISwipeGestureRecognizerDirectionLeft){ 5 if (self.isOpenLeft) return; //已经打开左滑,不再执行 6 7 //开始左滑: 先调用block关闭其他可能左滑的cell 8 if (self.closeOtherCellSwipe) 9 self.closeOtherCellSwipe(); 10 11 [UIView animateWithDuration:0.5 animations:^{ 12 sender.view.center = CGPointMake(0, CELLHEIGHT * 0.5); 13 }]; 14 self.isOpenLeft = YES; 15 } 16 else if (sender.direction == UISwipeGestureRecognizerDirectionRight){ 17 [self closeLeftSwipe]; //关闭左滑 18 } 19 } 20 21 //关闭左滑,恢复原状 22 - (void)closeLeftSwipe{ 23 if (!self.isOpenLeft) return; //还未打开左滑,不需要执行右滑 24 25 [UIView animateWithDuration:0.5 animations:^{ 26 self.containerView.center = CGPointMake(SCREENWIDTH * 0.5, CELLHEIGHT * 0.5); 27 }]; 28 self.isOpenLeft = NO; 29 }
控制器部分代码:
1 #pragma mark - 代理方法 2 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{ 3 return self.dataArr.count; 4 } 5 6 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{ 7 TanTableViewCell *cell = [TanTableViewCell cellWithTableView:tableView]; 8 9 MemberModel *model = [self.dataArr objectAtIndex:indexPath.row]; 10 [cell setData:model]; //设置数据 11 12 __weak typeof(self) tempSelf = self; 13 __weak typeof(cell) tempCell = cell; 14 15 //设置删除cell回调block 16 cell.deleteMember = ^{ 17 NSIndexPath *tempIndex = [tempSelf.tablView indexPathForCell:tempCell]; 18 [tempSelf.dataArr removeObject:tempCell.model]; 19 [tempSelf.tablView deleteRowsAtIndexPaths:@[tempIndex] withRowAnimation:UITableViewRowAnimationLeft]; 20 }; 21 22 //设置当cell左滑时,关闭其他cell的左滑 23 cell.closeOtherCellSwipe = ^{ 24 for (TanTableViewCell *item in tempSelf.tablView.visibleCells) { 25 if (item != tempCell) [item closeLeftSwipe]; 26 } 27 }; 28 29 return cell; 30 }
DEMO下载:
github地址:https://github.com/xiaotanit/Tan_UITableViewCellLeftSwipe