• iOS开发UITableView的动画cell


    1、动画cell  

      针对cell的动画,在Delegate中对cell的layer进行操作:

    2、实现代码

    #import "ViewController.h"
    #import "TableViewCell.h"
    #define CScreenWidth        [[UIScreen mainScreen] bounds].size.width
    #define CScreenHeight       [[UIScreen mainScreen] bounds].size.height
    
    @interface ViewController ()<UITableViewDelegate,UITableViewDataSource>
    @property (weak, nonatomic) IBOutlet UITableView *tableView;
    @property(nonatomic, strong)NSMutableArray *dataArr;
    @end
    
    @implementation ViewController
    
    - (void)viewDidLoad {
        [super viewDidLoad];
        // Do any additional setup after loading the view, typically from a nib.
        _dataArr = [NSMutableArray array];
        for (int i=0; i<100; i++) {
            [_dataArr addObject:[NSString stringWithFormat:@"%d%d",i,i]];
        }
        [_tableView registerNib:[UINib nibWithNibName:@"TableViewCell" bundle:nil] forCellReuseIdentifier:@"cell"];
    }
    
    - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
        return _dataArr.count;
    }
    - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
        TableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];
        cell.label.text = _dataArr[indexPath.row];
        return cell;
    }
    //快照截图
    //- (nullable UIView *)snapshotViewAfterScreenUpdates:(BOOL)afterUpdates NS_AVAILABLE_IOS(7_0);
    
    // 将rect由rect所在视图转换到目标视图view中,返回在目标视图view中的rect
    //- (CGRect)convertRect:(CGRect)rect toView:(UIView *)view;
    // 将rect从view中转换到当前视图中,返回在当前视图中的rect
    //- (CGRect)convertRect:(CGRect)rect fromView:(UIView *)view;
    - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
        [tableView deselectRowAtIndexPath:indexPath animated:YES];
        UITableViewCell * selectedCell = (UITableViewCell *)[tableView cellForRowAtIndexPath:indexPath];
        UIView *clipView = [selectedCell snapshotViewAfterScreenUpdates:NO];//快照
        CGRect clipFrame =[selectedCell convertRect:selectedCell.bounds toView:self.view];
        NSLog(@"==%@",NSStringFromCGRect(clipFrame));
        clipView.frame = clipFrame;
        UIView *view = [[UIView alloc] initWithFrame:clipFrame];
        view.backgroundColor = [UIColor redColor];
        [self.view addSubview:view];
        [self.view addSubview:clipView];
        
        [UIView animateWithDuration:1 animations:^{
            view.backgroundColor = [[UIColor redColor] colorWithAlphaComponent:.3];
            view.transform = CGAffineTransformMakeScale(1, CScreenHeight/clipFrame.size.height*2);
        } completion:^(BOOL finished) {
            [clipView removeFromSuperview];
            [view removeFromSuperview];
        }];
    }
    - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
        return 50;
    }
    - (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath{
        CATransform3D transA = CATransform3DIdentity;
        transA.m34 = -1/500;
        transA = CATransform3DRotate(transA, M_PI_2, 1, 1, 0);
        cell.layer.transform = CATransform3DScale(transA, 0.1, 0.1, 1);;
        [UIView animateWithDuration:0.5 animations:^{
            cell.layer.transform = CATransform3DIdentity;
            cell.layer.cornerRadius = 10;
            cell.layer.masksToBounds = YES;
        }];
        
    }
    
    @end

    3、附件:TableView的Delegate和DataSource的方法简介(iOS11.0)

    @protocol UITableViewDelegate<NSObject, UIScrollViewDelegate>
    
    @optional
    
    // cell、区头、区尾将要呈现和已经呈现
    - (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath;
    - (void)tableView:(UITableView *)tableView willDisplayHeaderView:(UIView *)view forSection:(NSInteger)section NS_AVAILABLE_IOS(6_0);
    - (void)tableView:(UITableView *)tableView willDisplayFooterView:(UIView *)view forSection:(NSInteger)section NS_AVAILABLE_IOS(6_0);
    - (void)tableView:(UITableView *)tableView didEndDisplayingCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath*)indexPath NS_AVAILABLE_IOS(6_0);
    - (void)tableView:(UITableView *)tableView didEndDisplayingHeaderView:(UIView *)view forSection:(NSInteger)section NS_AVAILABLE_IOS(6_0);
    - (void)tableView:(UITableView *)tableView didEndDisplayingFooterView:(UIView *)view forSection:(NSInteger)section NS_AVAILABLE_IOS(6_0);
    
    // cell、区头、区尾高度设置
    - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath;
    - (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section;
    - (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section;
    
    // cell、区头、区尾高度估算(heightForRowAtIndexPath获取cell会死循环)
    - (CGFloat)tableView:(UITableView *)tableView estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(7_0);
    - (CGFloat)tableView:(UITableView *)tableView estimatedHeightForHeaderInSection:(NSInteger)section NS_AVAILABLE_IOS(7_0);
    - (CGFloat)tableView:(UITableView *)tableView estimatedHeightForFooterInSection:(NSInteger)section NS_AVAILABLE_IOS(7_0);
    
    // 区头、区尾自定义view
    - (nullable UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section;
    - (nullable UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section;
    
    // 设置附件类型、附件被点击方法
    - (UITableViewCellAccessoryType)tableView:(UITableView *)tableView accessoryTypeForRowWithIndexPath:(NSIndexPath *)indexPath NS_DEPRECATED_IOS(2_0, 3_0) __TVOS_PROHIBITED;
    - (void)tableView:(UITableView *)tableView accessoryButtonTappedForRowWithIndexPath:(NSIndexPath *)indexPath;
    
    // Selection
    
    // cell是否高亮、高亮和取消高亮调用函数
    - (BOOL)tableView:(UITableView *)tableView shouldHighlightRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(6_0);
    - (void)tableView:(UITableView *)tableView didHighlightRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(6_0);
    - (void)tableView:(UITableView *)tableView didUnhighlightRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(6_0);
    
    // 将要选择、取消某个cell(适用于拦截点击某个cell)
    - (nullable NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath;
    - (nullable NSIndexPath *)tableView:(UITableView *)tableView willDeselectRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(3_0);
    // 已经选择、取消某个cell(适用于cell事件处理)
    - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath;
    - (void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(3_0);
    
    // 设置cell的编辑样式、删除确定按钮的标题文字 --左滑操作
    - (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath;
    - (nullable NSString *)tableView:(UITableView *)tableView titleForDeleteConfirmationButtonForRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(3_0) __TVOS_PROHIBITED;
    
    // 添加cell的编辑操作(就是多个操作按钮)--左滑操作按钮
    - (nullable NSArray<UITableViewRowAction *> *)tableView:(UITableView *)tableView editActionsForRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(8_0) __TVOS_PROHIBITED;
    
    // 取代上方editActionsForRowAtIndexPath方法
    - (nullable UISwipeActionsConfiguration *)tableView:(UITableView *)tableView leadingSwipeActionsConfigurationForRowAtIndexPath:(NSIndexPath *)indexPath API_AVAILABLE(ios(11.0)) API_UNAVAILABLE(tvos);
    // 创建操作按钮UIContextualAction,UISwipeActionsConfiguration相当于封装类
    //UIContextualActionStyleNormal,UIContextualActionStyleDestructive(一直右滑直接删除cell)
    - (nullable UISwipeActionsConfiguration *)tableView:(UITableView *)tableView trailingSwipeActionsConfigurationForRowAtIndexPath:(NSIndexPath *)indexPath API_AVAILABLE(ios(11.0)) API_UNAVAILABLE(tvos);
    
    // 编辑时是否缩进
    - (BOOL)tableView:(UITableView *)tableView shouldIndentWhileEditingRowAtIndexPath:(NSIndexPath *)indexPath;
    
    // 将要、已经结束编辑cell
    - (void)tableView:(UITableView *)tableView willBeginEditingRowAtIndexPath:(NSIndexPath *)indexPath __TVOS_PROHIBITED;
    - (void)tableView:(UITableView *)tableView didEndEditingRowAtIndexPath:(nullable NSIndexPath *)indexPath __TVOS_PROHIBITED;
    
    // Moving/reordering
    
    // 移动特定的某行cell
    - (NSIndexPath *)tableView:(UITableView *)tableView targetIndexPathForMoveFromRowAtIndexPath:(NSIndexPath *)sourceIndexPath toProposedIndexPath:(NSIndexPath *)proposedDestinationIndexPath;
    
    // 设置cell行缩进(可用于设置不同级别)
    - (NSInteger)tableView:(UITableView *)tableView indentationLevelForRowAtIndexPath:(NSIndexPath *)indexPath; // return 'depth' of row for hierarchies
    
    // 是否指定cell显示菜单、弹出菜单方法、选择菜单调用方法
    - (BOOL)tableView:(UITableView *)tableView shouldShowMenuForRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(5_0);
    - (BOOL)tableView:(UITableView *)tableView canPerformAction:(SEL)action forRowAtIndexPath:(NSIndexPath *)indexPath withSender:(nullable id)sender NS_AVAILABLE_IOS(5_0);
    - (void)tableView:(UITableView *)tableView performAction:(SEL)action forRowAtIndexPath:(NSIndexPath *)indexPath withSender:(nullable id)sender NS_AVAILABLE_IOS(5_0);
    
    // 能否获得焦点、是否将要更新焦点、已经更新焦点、返回上一个焦点的NSIndexPath
    - (BOOL)tableView:(UITableView *)tableView canFocusRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(9_0);
    - (BOOL)tableView:(UITableView *)tableView shouldUpdateFocusInContext:(UITableViewFocusUpdateContext *)context NS_AVAILABLE_IOS(9_0);
    - (void)tableView:(UITableView *)tableView didUpdateFocusInContext:(UITableViewFocusUpdateContext *)context withAnimationCoordinator:(UIFocusAnimationCoordinator *)coordinator NS_AVAILABLE_IOS(9_0);
    - (nullable NSIndexPath *)indexPathForPreferredFocusedViewInTableView:(UITableView *)tableView NS_AVAILABLE_IOS(9_0);
    
    // Spring Loading
    
    // cell是否支持iOS11 新特性 Drag and Drop (默认YES)
    - (BOOL)tableView:(UITableView *)tableView shouldSpringLoadRowAtIndexPath:(NSIndexPath *)indexPath withContext:(id<UISpringLoadedInteractionContext>)context API_AVAILABLE(ios(11.0)) API_UNAVAILABLE(tvos, watchos);
    
    @end
    UITableViewDelegate
    @protocol UITableViewDataSource<NSObject>
    
    @required
    
    //每个区返回多少行、初始化cell
    - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section;
    - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath;
    
    @optional
    
    //返回多少区(默认一个区)
    - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView;              // Default is 1 if not implemented
    
    //设置区头、区尾文字
    - (nullable NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section;
    - (nullable NSString *)tableView:(UITableView *)tableView titleForFooterInSection:(NSInteger)section;
    
    // Editing
    
    //cell是否能编辑、是否能移动
    - (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath;
    - (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath;
    
    // 设置索引栏标题数组(右侧的ABCD……)、设置索引栏标题对应的分区
    - (nullable NSArray<NSString *> *)sectionIndexTitlesForTableView:(UITableView *)tableView;
    - (NSInteger)tableView:(UITableView *)tableView sectionForSectionIndexTitle:(NSString *)title atIndex:(NSInteger)index;
    
    // cell编辑时、移动时调用的方法
    - (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath;
    - (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath;
    
    @end
    UITableViewDataSource
  • 相关阅读:
    3927Circular Sequence 思维题(求环形最大子列和)
    Rotational Painting(hdu 3685 凸包+多边形重心 模板题
    模拟 3897: Catch the Mouse
    L3-010 是否完全二叉搜索树 (30分)
    已知两种遍历顺序 推剩下的一种
    进阶实验4-3.3 完全二叉搜索树 (30分)->排序得出搜索树中序遍历->已知搜索树中序求层序
    任意进制转化/模板(c++/ java)
    4038: Robot Navigation --bfs(求最短路及其路径条数)
    A Simple Math Problem(hdu 5974 数论题
    LCM Walk(hdu 5584;数论题
  • 原文地址:https://www.cnblogs.com/xianfeng-zhang/p/8867241.html
Copyright © 2020-2023  润新知