（转载）iOS- 指压即达，如何集成iOS9里的3D Touch

原文连接

作者： 清澈Saup
出处： http://www.cnblogs.com/qingche/

1.前言　　

 

随着6S的到来，3DTouch被各大热门APP迅速普及，博主亲自体验后，发现使用便捷性大幅提高，随后自己照着文档，写了个Demo出来，分享给大家，希望能对有需要的朋友提供有一些帮助。

2.如何使用3D Touch？　　

2.1.主界面重按APP图标，弹出Touch菜单　　

在AppleDelegate文件中的程序入口处配置：

didFinishLaunchingWithOptions

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//给App图标添加3D Touch菜单 //拍照   //菜单图标 UIApplicationShortcutIcon *iconCamera = [UIApplicationShortcutIcon iconWithType:UIApplicationShortcutIconTypeAdd]; //菜单文字 UIMutableApplicationShortcutItem *itemCamera = [[UIMutableApplicationShortcutItem alloc] initWithType:@"1" localizedTitle:@"拍照"]; //绑定信息到指定菜单 itemCamera.icon = iconCamera;   //相册 //菜单图标 UIApplicationShortcutIcon *iconPhotoLibrary = [UIApplicationShortcutIcon iconWithType:UIApplicationShortcutIconTypeSearch]; //菜单文字 UIMutableApplicationShortcutItem *itemPhotoLibrary = [[UIMutableApplicationShortcutItem alloc] initWithType:@"2" localizedTitle:@"相册"]; //绑定信息到指定菜单 itemPhotoLibrary.icon = iconPhotoLibrary; //绑定到App icon application.shortcutItems = @[itemCamera,itemPhotoLibrary];

 弹出菜单，我们需要让用户点击后跳转指定页面

这里我们会用到AppDelegate里新增加的一个方法

1	- (void)application:(UIApplication *)application performActionForShortcutItem:(nonnull UIApplicationShortcutItem *)shortcutItem completionHandler:(nonnull void (^)(BOOL))completionHandler;

 让后我们需要在这个方法里做跳转的操作

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//照相type if ([shortcutItem.type isEqualToString:@"1"]) {          UIImagePickerController *picker = [[UIImagePickerController alloc] init];//初始化     picker.allowsEditing = YES;//设置可编辑     picker.sourceType = UIImagePickerControllerSourceTypeCamera;     [self.window.rootViewController presentViewController:picker animated:YES completion:nil];//进入照相界面      } //相册type if ([shortcutItem.type isEqualToString:@"2"]) {          UIImagePickerController *picker = [[UIImagePickerController alloc] init];//初始化     picker.allowsEditing = YES;//设置可编辑     picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;     [self.window.rootViewController presentViewController:picker animated:YES completion:nil];//进入图片库

 点击后分别会进入相机和相册

2.2. 3DTouch轻按预览功能，预览时底部菜单的添加　　

首先我们要把轻按预览和长按手势区分开来，这里要在初始化时做一个基本的检测。

 

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nterface ViewController () <UIViewControllerPreviewingDelegate> {     UILongPressGestureRecognizer *_longPress; } @end     @implementation ViewController   - (void)viewDidLoad {     [super viewDidLoad];     UILongPressGestureRecognizer *longPressGr = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressToDo)];     _longPress = longPressGr; }     //检测页面是否处于3DTouch - (void)check3DTouch{          if (self.traitCollection.forceTouchCapability == UIForceTouchCapabilityAvailable) {                  [self registerForPreviewingWithDelegate:self sourceView:self.view];         NSLog(@"3D Touch 开启");         //长按停止         _longPress.enabled = NO;              }else{         _longPress.enabled = YES;     }      }     - (void)viewWillAppear:(BOOL)animated{          [self check3DTouch];      }

然后我们需要实现 UIViewControllerPreviewingDelegate的协议

然后我们需要实现 UIViewControllerPreviewingDelegate的协议

1	@interface ViewController () <UIViewControllerPreviewingDelegate>

1 2	//然后实现代理方法 - (UIViewController *)previewingContext:(id<UIViewControllerPreviewing>)previewingContext viewControllerForLocation:(CGPoint)location;

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#pragma mark >> 3D touch 代理方法 //轻按进入浮动预览页面 - (UIViewController *)previewingContext:(id<UIViewControllerPreviewing>)previewingContext viewControllerForLocation:(CGPoint)location{           //注意这里我因为测试，没做具体的位置处理，如果需要定位到具体的图片Cell位置的话，可以用location通过tableView的convertPoint来取到指定Cell           ASPreviewViewController *vc = [[ASPreviewViewController alloc] init];     vc.view.frame = self.view.frame;     UIImageView *er = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"123.png"]];     vc.view = er;     return vc;       }

 完成后可以实现基本的预览效果:

最后我们加上一个

预览时下滑底部菜单的添加

在我们刚刚创建的预览控制器ASPreviewViewController里实现 UIViewControllerPreviewingDelegate的协议

然后重写它的代理方法

1	- (NSArray<id<UIPreviewActionItem>> *)previewActionItems;

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//预览页面 底部Action Items - (NSArray<id<UIPreviewActionItem>> *)previewActionItems{           UIPreviewAction *p1 =[UIPreviewAction actionWithTitle:@"分享" style:UIPreviewActionStyleDefault handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {         NSLog(@"点击了分享");     }];           UIPreviewAction *p2 =[UIPreviewAction actionWithTitle:@"收藏" style:UIPreviewActionStyleDefault handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {         NSLog(@"点击了收藏");     }];           NSArray *actions = @[p1,p2];     return actions; }