原文连接
作者： 清澈Saup
出处：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
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | //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
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | //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。
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | 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; |
| 1 2 3 4 5 6 7 8 9 10 11 12 13 | #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; |
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 | //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; } |
