3DTouch - iOS新特性

概述

3DTouch是一种立体触控技术,被苹果称为新一代多点触控技术.

详细

6s和6s plus之后特有效果,对着应用图标用力按会触发3DTouch .

一、程序实现

第一步 : 3DTouch 设备支持检测:

检测当前的设备是否支持3DTouch

//  在iOS9中有一个新的枚举
 typedef NS_ENUM(NSInteger, UIForceTouchCapability) {  
            UIForceTouchCapabilityUnknown        = 0,  // 未知的支持属性
            UIForceTouchCapabilityUnavailable    = 1,  // 不支持
            UIForceTouchCapabilityAvailable      = 2 // 支持
  };

一般我们都在每个ViewController的生命周期中这样做:

定义一个是否设备支持的BOOL值属性

@property (nonatomic , assign) BOOL support3DTouch;

在生命周期函数中检测支持与否

  - (void)viewWillAppear:(BOOL)animated {  
     [super viewWillAppear:animated];  
      //检测当前是否支持3DTouch  
      self.support3DTouch = [self support3DTouch];  
  }

在生命周期外检测支持与否(因为有可能出了生命周期函数而发生了变化)

  - (void)traitCollectionDidChange:(nullable UITraitCollection *)previousTraitCollection NS_AVAILABLE_IOS(8_0) {     
      self.support3DTouch = [self support3DTouch];  
  }

检测是否支持3DTouch的方法

 - (BOOL)support3DTouch  
  {  
      // 如果开启了3D touch  
      if (self.traitCollection.forceTouchCapability == UIForceTouchCapabilityAvailable)  
      {  
          return YES;  
      }  
          return NO;  
      }  
  }

 

第二步 : 配置快捷视图列表

创建快捷视图列表有两种方法:

1,一种是编辑info.plist文件中的UIApplicationShortcutItems,

通过可视化的界面添加键值对直接配置info.plist

576025-2d106da92a5e28d5.png

2,另一种是使用代码在工程中加入items

在工程的 AppDelegate.m

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    self.window.rootViewController = [[UINavigationController alloc] initWithRootViewController:[[HomeViewController alloc] init]];
    [self.window makeKeyAndVisible];
    
    //  代码创建快捷视图列表的方法,
     [self create3DTouchShotItems];
    return YES;
}

代码创建快捷视图列表的方法:

- (void)create3DTouchShotItems {
    //创建快捷item的icon UIApplicationShortcutItemIconFile
    UIApplicationShortcutIcon *icon1 = [UIApplicationShortcutIcon iconWithTemplateImageName:@"icon1"];
    UIApplicationShortcutIcon *icon2 = [UIApplicationShortcutIcon iconWithTemplateImageName:@"icon2"];
    UIApplicationShortcutIcon *icon3 = [UIApplicationShortcutIcon iconWithTemplateImageName:@"icon3"];
    
    //创建快捷item的userinfo UIApplicationShortcutItemUserInfo
    NSDictionary *info1 = @{@"url":@"url1"};
    NSDictionary *info2 = @{@"url":@"url2"};
    NSDictionary *info3 = @{@"url":@"url3"};
    
    //创建ShortcutItem
    UIMutableApplicationShortcutItem *item1 = [[UIMutableApplicationShortcutItem alloc]initWithType:@"XS_3DTocuh_1" localizedTitle:@"扫一扫" localizedSubtitle:@"" icon:icon1 userInfo:info1];
    UIMutableApplicationShortcutItem *item2 = [[UIMutableApplicationShortcutItem alloc]initWithType:@"XS_3DTocuh_2" localizedTitle:@"smile" localizedSubtitle:@"微笑面对生活" icon:icon2 userInfo:info2];
    UIMutableApplicationShortcutItem *item3 = [[UIMutableApplicationShortcutItem alloc]initWithType:@"XS_3DTocuh_3" localizedTitle:@"购物" localizedSubtitle:@"Shopping" icon:icon3 userInfo:info3];
    
    NSArray *items = @[item1, item2, item3];
    [UIApplication sharedApplication].shortcutItems = items;
}

 

第三步 : 给列表视图中的cell注册 3DTouch 事件

  • 1,首先,在首页当前控制器里遵守UIViewControllerPreviewingDelegate协议

  • UIViewControllerPreviewingDelegate

  • 2,在注册前先判断是否设备支持(也就是第一步)

  • 3,注册: [self registerForPreviewingWithDelegate:self sourceView:cell];

 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    
    ZLTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"ZLTableViewCell"];
    if (cell == nil) {
        cell = [ZLTableViewCell cellWithTableView:tableView];
    }
    cell.dataFrame = self.dataSource[indexPath.row];
    //给cell注册代理,使其支持3DTouch手势
    if (self.support3DTouch) {
        [self registerForPreviewingWithDelegate:self sourceView:cell];
    }
    
    return cell;
}

 

第四步: 完成UIViewControllerPreviewingDelegate 协议回调,实现Peek Pop

在首页当前控制器里,

#pragma mark - 3DTouch  UIViewControllerPreviewingDelegate

Peek 实现代码:

此方法是轻按控件时,跳出peek的代理方法

- (UIViewController *)previewingContext:(id<UIViewControllerPreviewing>)previewingContext viewControllerForLocation:(CGPoint)location {
    
    //防止重复加入
    if ([self.presentedViewController isKindOfClass:[ZLPeekViewController class]])
    {
        return nil;
    }
    else
    {
        ZLTableViewCell *cell = (ZLTableViewCell *)previewingContext.sourceView;
        ZLCellData * cellData = cell.dataFrame.cellData;
        ZLPeekViewController *peekViewController = [[ZLPeekViewController alloc] init];
        peekViewController.cellData = cellData;
        peekViewController.delegate = self;
        return peekViewController;
    }
}

Pop 代码:

此方法是重按peek时,跳入pop的代理方法

- (void)previewingContext:(id<UIViewControllerPreviewing>)previewingContext
    commitViewController:(UIViewController *)viewControllerToCommit {
    
    ZLTableViewCell *cell = (ZLTableViewCell *)previewingContext.sourceView;
    ZLCellData * cellData = cell.dataFrame.cellData;
    ZLPopViewController *popViewController = [[ZLPopViewController alloc] init];
    popViewController.cellData = cellData;
    // 以prentViewController的形式展现
    [self showViewController:popViewController sender:self];
    
    // 以push的形势展现
//    [self.navigationController pushViewController:popViewController animated:YES];
}

 

第五步 : 在Peek状态下向上滑动出现的按钮配置方法

在 ZLPeekViewController.m 里, 实现 - (NSArray> *)previewActionItems 回调方法

#pragma mark - Preview Actions
- (NSArray<id<UIPreviewActionItem>> *)previewActionItems {
    
    // 生成UIPreviewAction
    UIPreviewAction *action1 = [UIPreviewAction actionWithTitle:@"事件 1" style:UIPreviewActionStyleDefault handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
        NSLog(@"Action 1 selected");
        [self.delegate pushToPopViewControllerWithCellData:self.cellData];
    }];
    
    UIPreviewAction *action2 = [UIPreviewAction actionWithTitle:@"事件 2" style:UIPreviewActionStyleDestructive handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
        NSLog(@"Action 2 selected");
    }];
    
    UIPreviewAction *action3 = [UIPreviewAction actionWithTitle:@"事件 3" style:UIPreviewActionStyleSelected handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
        NSLog(@"Action 3 selected");
    }];
    
    UIPreviewAction *tap1 = [UIPreviewAction actionWithTitle:@"按钮 1" style:UIPreviewActionStyleDefault handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
        NSLog(@"tap 1 selected");
    }];
    
    UIPreviewAction *tap2 = [UIPreviewAction actionWithTitle:@"按钮 2" style:UIPreviewActionStyleDestructive handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
        NSLog(@"tap 2 selected");
    }];
    
    UIPreviewAction *tap3 = [UIPreviewAction actionWithTitle:@"按钮 3" style:UIPreviewActionStyleSelected handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
        NSLog(@"tap 3 selected");
    }];
    
    NSArray *actions = @[action1, action2, action3];
    NSArray *taps = @[tap1, tap2, tap3];
    UIPreviewActionGroup *group1 = [UIPreviewActionGroup actionGroupWithTitle:@"一组事件" style:UIPreviewActionStyleDefault actions:actions];
    UIPreviewActionGroup *group2 = [UIPreviewActionGroup actionGroupWithTitle:@"一组按钮" style:UIPreviewActionStyleDefault actions:taps];
    NSArray *group = @[group1,group2];
    
    //当然你也可以返回三个单独的action对象的数组,而不是group,具体效果,可以自己试一下
    
    return group;
}

 

二、运行效果与文件截图

1、运行效果截图:

576025-b98a06c5b91e59ee.png

2、文件截图:

2.jpg

三、其他补充

界面性问题可以根据自己项目需求调整即可, 具体可参考代码, 项目能够直接运行!

 

 

 

 

 

注:本文著作权归作者,由demo大师发表,拒绝转载,转载需要作者授权

 

posted on 2018-03-01 00:12  demo例子集  阅读(288)  评论(0编辑  收藏  举报

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