iOS9新特性 3DTouch 开发教程全解(含源码)

jopen 6年前

本文主要讲解3DTouch各种场景下的开发方法,开发主屏幕应用icon上的快捷选项标签(Home Screen Quick Actions),静态设置 UIApplicationShortcutItem ,动态添加、修改UIApplicationShortcutItem,peek和pop的实现。

一、3DTouch开发准备工作(让模拟器也支持 3DTouch 的解决办法)

需要支持3DTouch的设备,如iPhone6s或以上、iOS9或以上、Xcode7或以上,估计很多和我一样的屌丝还没有iPhone6s,别怕,github上有人为我们提供了这样的一个插件,可以让我们在模拟器上进行3D Touch的效果测试。 https://github.com/DeskConnect/SBShortcutMenuSimulator

安装和使用git主页里介绍的很清楚,只有一点需要注意,如果电脑中装有Xcode6和Xcode7两个版本,那个Xcode的编译路径,需要做如下修改。( Xcode2.app是你Xcode7版本的名字 )

sudo xcode-select -switch /Applications/Xcode2.app/Contents/Developer/

二、主屏幕 按压应用图标展示快捷选项 ( Home Screen Quick Actions )

应用最多有4个快捷选项标签, iOS9为我们提供了2种方式来开发按压应用图标展示快捷选项功能(Home Screen Quick Actions)。

1.静态标签

打开我们项目的plist文件,添加如下项(选择框中并没有,需要我们手工敲上去)

UIApplicationShortcutItems:数组中的元素就是我们的那些快捷选项标签。

UIApplicationShortcutItemTitle:标签标题(必填)

UIApplicationShortcutItemType:标签的唯一标识 (必填)

UIApplicationShortcutItemIconType:使用系统图标的类型,如搜索、定位、home等(可选)

UIApplicationShortcutItemIcon File:使用项目中的图片作为标签图标 (可选)

UIApplicationShortcutItemSubtitle:标签副标题 (可选)

UIApplicationShortcutItemUserInfo:字典信息,如传值使用 (可选)

2.动态标签

在AppDelegate.m文件中加如下代码:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {            UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];      ViewController *mainView = [storyboard instantiateViewControllerWithIdentifier:@"mainController"];      UINavigationController *mainNav = [[UINavigationController alloc] initWithRootViewController:mainView];      self.window.rootViewController = mainNav;      [self.window makeKeyAndVisible];            //创建应用图标上的3D touch快捷选项      [self creatShortcutItem];            UIApplicationShortcutItem *shortcutItem = [launchOptions valueForKey:UIApplicationLaunchOptionsShortcutItemKey];      //如果是从快捷选项标签启动app,则根据不同标识执行不同操作,然后返回NO,防止调用- (void)application:(UIApplication *)application performActionForShortcutItem:(UIApplicationShortcutItem *)shortcutItem completionHandler:(void (^)(BOOL))completionHandler      if (shortcutItem) {          //判断先前我们设置的快捷选项标签唯一标识,根据不同标识执行不同操作          if([shortcutItem.type isEqualToString:@"com.mycompany.myapp.one"]){              NSArray *arr = @[@"hello 3D Touch"];              UIActivityViewController *vc = [[UIActivityViewController alloc]initWithActivityItems:arr applicationActivities:nil];              [self.window.rootViewController presentViewController:vc animated:YES completion:^{              }];          } else if ([shortcutItem.type isEqualToString:@"com.mycompany.myapp.search"]) {//进入搜索界面              SearchViewController *childVC = [storyboard instantiateViewControllerWithIdentifier:@"searchController"];              [mainNav pushViewController:childVC animated:NO];          } else if ([shortcutItem.type isEqualToString:@"com.mycompany.myapp.share"]) {//进入分享界面              SharedViewController *childVC = [storyboard instantiateViewControllerWithIdentifier:@"sharedController"];              [mainNav pushViewController:childVC animated:NO];          }          return NO;      }      return YES;  }    //创建应用图标上的3D touch快捷选项  - (void)creatShortcutItem {      //创建系统风格的icon      UIApplicationShortcutIcon *icon = [UIApplicationShortcutIcon iconWithType:UIApplicationShortcutIconTypeShare];        //    //创建自定义图标的icon  //    UIApplicationShortcutIcon *icon2 = [UIApplicationShortcutIcon iconWithTemplateImageName:@"分享.png"];            //创建快捷选项      UIApplicationShortcutItem * item = [[UIApplicationShortcutItem alloc]initWithType:@"com.mycompany.myapp.share" localizedTitle:@"分享" localizedSubtitle:@"分享副标题" icon:icon userInfo:nil];            //添加到快捷选项数组      [UIApplication sharedApplication].shortcutItems = @[item];  }

效果图:

3.点击快捷选项标签进入应用的响应

在AppDelegate.m文件中加如下代码:

//如果app在后台,通过快捷选项标签进入app,则调用该方法,如果app不在后台已杀死,则处理通过快捷选项标签进入app的逻辑在- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions中  - (void)application:(UIApplication *)application performActionForShortcutItem:(UIApplicationShortcutItem *)shortcutItem completionHandler:(void (^)(BOOL))completionHandler {            UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];      ViewController *mainView = [storyboard instantiateViewControllerWithIdentifier:@"mainController"];      UINavigationController *mainNav = [[UINavigationController alloc] initWithRootViewController:mainView];      self.window.rootViewController = mainNav;      [self.window makeKeyAndVisible];            //判断先前我们设置的快捷选项标签唯一标识,根据不同标识执行不同操作      if([shortcutItem.type isEqualToString:@"com.mycompany.myapp.one"]){          NSArray *arr = @[@"hello 3D Touch"];          UIActivityViewController *vc = [[UIActivityViewController alloc]initWithActivityItems:arr applicationActivities:nil];          [self.window.rootViewController presentViewController:vc animated:YES completion:^{          }];      } else if ([shortcutItem.type isEqualToString:@"com.mycompany.myapp.search"]) {//进入搜索界面          SearchViewController *childVC = [storyboard instantiateViewControllerWithIdentifier:@"searchController"];          [mainNav pushViewController:childVC animated:NO];      } else if ([shortcutItem.type isEqualToString:@"com.mycompany.myapp.share"]) {//进入分享界面          SharedViewController *childVC = [storyboard instantiateViewControllerWithIdentifier:@"sharedController"];          [mainNav pushViewController:childVC animated:NO];      }            if (completionHandler) {          completionHandler(YES);      }  }

4.修改UIApplicationShortcutItem

//获取第0个shortcutItem      UIApplicationShortcutItem *shortcutItem0 = [[UIApplication sharedApplication].shortcutItems objectAtIndex:0];      //将shortcutItem0的类型由UIApplicationShortcutItem改为可修改类型UIMutableApplicationShortcutItem      UIMutableApplicationShortcutItem * newShortcutItem0 = [shortcutItem0 mutableCopy];      //修改shortcutItem的标题      [newShortcutItem0 setLocalizedTitle:@"按钮1"];      //将shortcutItems数组改为可变数组      NSMutableArray *newShortcutItems = [[UIApplication sharedApplication].shortcutItems mutableCopy];      //替换原ShortcutItem      [newShortcutItems replaceObjectAtIndex:0 withObject:newShortcutItem0];      [UIApplication sharedApplication].shortcutItems = newShortcutItems;

三、peek(展示预览)和pop(跳页至预览的界面)

1. 首先给view注册3DTouch的peek(预览)和pop功能,我这里给cell注册 3DTouch的peek(预览)和pop功能

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {      UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"myCell"];      if (cell == nil) {          cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"myCell"];      }      cell.textLabel.text = _myArray[indexPath.row];      if (self.traitCollection.forceTouchCapability == UIForceTouchCapabilityAvailable) {          NSLog(@"3D Touch  可用!");          //给cell注册3DTouch的peek(预览)和pop功能          [self registerForPreviewingWithDelegate:self sourceView:cell];      } else {          NSLog(@"3D Touch 无效");      }      return cell;  }

2.需要继承协议UIViewControllerPreviewingDelegate

3.实现UIViewControllerPreviewingDelegate方法

//peek(预览)  - (nullable UIViewController *)previewingContext:(id <UIViewControllerPreviewing>)previewingContext viewControllerForLocation:(CGPoint)location  {      //获取按压的cell所在行,[previewingContext sourceView]就是按压的那个视图      NSIndexPath *indexPath = [_myTableView indexPathForCell:(UITableViewCell* )[previewingContext sourceView]];            //设定预览的界面      UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];      SearchViewController *childVC = [storyboard instantiateViewControllerWithIdentifier:@"searchController"];      childVC.preferredContentSize = CGSizeMake(0.0f,500.0f);      childVC.str = [NSString stringWithFormat:@"我是%@,用力按一下进来",_myArray[indexPath.row]];            //调整不被虚化的范围,按压的那个cell不被虚化(轻轻按压时周边会被虚化,再少用力展示预览,再加力跳页至设定界面)      CGRect rect = CGRectMake(0, 0, self.view.frame.size.width,40);      previewingContext.sourceRect = rect;            //返回预览界面      return childVC;  }    //pop(按用点力进入)  - (void)previewingContext:(id <UIViewControllerPreviewing>)previewingContext commitViewController:(UIViewController *)viewControllerToCommit {       [self showViewController:viewControllerToCommit sender:self];   }

效果图:( 当用户按下时cell周边会虚化,增加压力达到一定值会弹出设定的预览界面,继续增加力按压会跳页至预览界面 )

4.打开预览的视图的.m文件,我这里是 SearchViewController .m中加上如下代码:

- (NSArray<id<UIPreviewActionItem>> *)previewActionItems {      // setup a list of preview actions      UIPreviewAction *action1 = [UIPreviewAction actionWithTitle:@"Aciton1" style:UIPreviewActionStyleDefault handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {          NSLog(@"Aciton1");      }];            UIPreviewAction *action2 = [UIPreviewAction actionWithTitle:@"Aciton2" style:UIPreviewActionStyleDefault handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {          NSLog(@"Aciton2");      }];            UIPreviewAction *action3 = [UIPreviewAction actionWithTitle:@"Aciton3" style:UIPreviewActionStyleDefault handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {          NSLog(@"Aciton3");      }];            NSArray *actions = @[action1,action2,action3];            // and return them (return the array of actions instead to see all items ungrouped)      return actions;  }

效果图:(当弹出预览时,上滑预览视图,出现预览视图中快捷选项)

四、3DTouch压力值的运用

直接上图、上代码更直观,注释也很清楚,这是我的SearchViewController界面。

直接在SearchViewController.m加这个方法即可,按压SearchViewController中的任何视图都会调用这个方法

//按住移动or压力值改变时的回调  -(void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {      NSArray *arrayTouch = [touches allObjects];      UITouch *touch = (UITouch *)[arrayTouch lastObject];      //通过tag确定按压的是哪个view,注意:如果按压的是label,将label的userInteractionEnabled属性设置为YES      if (touch.view.tag == 105) {          NSLog(@"move压力 = %f",touch.force);          //红色背景的label显示压力值          _lbForce.text = [NSString stringWithFormat:@"压力%f",touch.force];          //红色背景的label上移的高度=压力值*100          _bottom.constant = ((UITouch *)[arrayTouch lastObject]).force * 100;      }  }

好了,用不同力度按压那个蓝色背景的label,感受一下力度的变化吧,会看到随着力度的变化红色背景的label会上下移动。

源码: https://github.com/zhanglinfeng/Demo3DTouch.git

来自: http://www.cnblogs.com/zhanglinfeng/p/5133939.html