3D Touch是一種立體觸控技術(shù)，被蘋果稱為新一代多點(diǎn)觸控技術(shù)，是在Apple Watch上采用的Force Touch，屏幕可感應(yīng)不同的感壓力度觸控。3D Touch，有Peek Pop 兩種新手勢。

• 主頁的 quick action 可以讓你的app 直接進(jìn)入相關(guān)行為。
• Peek and Pop 允許你快速預(yù)覽內(nèi)容，并導(dǎo)航到對應(yīng)界面。
• UIPreviewInteraction 讓你可以更精細(xì)地控制 3D Touch。

話不多說，馬上開始

1.添加主屏幕快捷菜單 ( Home screen quick action)

(1)靜態(tài)添加快捷菜單

創(chuàng)建一個(gè)靜態(tài)的快捷菜單，只需要簡單地在Info.plist中添加一個(gè) UIApplicationShortcutItems 的 Array 即可。

UIApplicationShortcutItems

關(guān)鍵字釋義：

UIApplicationShortcutItemType: 快捷可選項(xiàng)的特定字符串(必填)
UIApplicationShortcutItemTitle: 快捷可選項(xiàng)的標(biāo)題(必填)
UIApplicationShortcutItemSubtitle: 快捷可選項(xiàng)的子標(biāo)題(可選)
UIApplicationShortcutItemIconType: 快捷可選項(xiàng)的圖標(biāo)(可選)
UIApplicationShortcutItemIconFile: 快捷可選項(xiàng)的自定義圖標(biāo)(可選)
UIApplicationShortcutItemUserInfo: 快捷可選項(xiàng)的附加信息(可選)

(2)動(dòng)態(tài)添加快捷菜單

初始化并配置 UIApplicationShortcutItem, UIMutableApplicationShortcutItem 和 UIApplicationShortcutIcon 這三個(gè)類，并將其添加到 AppDelegate 中的 shortcutItems 屬性即可。

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
    UIApplicationShortcutIcon *icon1 = [UIApplicationShortcutIcon iconWithType:UIApplicationShortcutIconTypeAdd];
    UIApplicationShortcutIcon *icon2 = [UIApplicationShortcutIcon iconWithType:UIApplicationShortcutIconTypeShare];
    UIApplicationShortcutItem *item1 = [[UIApplicationShortcutItem alloc]initWithType:@"item1" localizedTitle:@"標(biāo)題1" localizedSubtitle:nil icon:icon1 userInfo:nil];
    UIApplicationShortcutItem *item2 = [[UIApplicationShortcutItem alloc]initWithType:@"item2" localizedTitle:@"標(biāo)題2" localizedSubtitle:nil icon:icon2 userInfo:nil];
    NSArray *array = @[item1,item2];
    [UIApplication sharedApplication].shortcutItems = array;
    return YES;
}

2.檢測設(shè)備是否支持3D Touch

在ViewController.m文件的viewDidLoad中判斷3D Touch是否可用，防止設(shè)備不支持3D Touch功能時(shí)崩潰

-(void)check3dtouch
{
    if(self.traitCollection.forceTouchCapability == UIForceTouchCapabilityAvailable)
    {
        NSLog(@"3DTouch 可用");
    }else{
        NSLog(@"3DTouch 不可用");
    }
}

3.實(shí)現(xiàn)快捷選項(xiàng)功能

-(void)application:(UIApplication *)application performActionForShortcutItem:(UIApplicationShortcutItem *)shortcutItem completionHandler:(void (^)(BOOL))completionHandler
{
    if ([shortcutItem.localizedTitle isEqualToString:@"標(biāo)題1"]) {
        UIAlertView * alert = [[UIAlertView alloc]initWithTitle:@"測試1" message:@"我只是測試" delegate:nil cancelButtonTitle:@"我知道是測試" otherButtonTitles:@"好", nil];
        [alert show];
    }
    else if([shortcutItem.type isEqualToString:@"標(biāo)題2"]){
        
        //...
        
    }
    else if (completionHandler) {
        completionHandler(YES);
    }
}

4.Peek&Pop

Peek and Pop 將傳統(tǒng)的 Push 操作分為了兩步，當(dāng)你的手指按壓某行列表，背景開始模式模糊，然后出現(xiàn)一個(gè)預(yù)覽界面，然后繼續(xù)增加壓力，伴隨著俏皮的彈性動(dòng)畫，下一個(gè)界面呈現(xiàn)在你眼前。在 API 中，這兩部分別被稱為 Preview 和 Commit。

• 讓需要預(yù)覽的 ViewController 遵循 UIViewControllerPreviewingDelegate 協(xié)議
• 調(diào)用 registerForPreviewingWithDelegate: sourceView: 注冊該ViewController

[self registerForPreviewingWithDelegate:self sourceView:self.view];

• 在preview 代理方法中提供一個(gè)預(yù)覽的ViewController，并設(shè)置好 context 的 sourceRect.
• 在 commit 代理方法中，直接調(diào)用 showViewController(_:sender:) 即可。

//BJBaseViewController
//UIViewControllerPreviewingDelegate
//添加peek功能
-(UIViewController *)previewingContext:(id)context viewControllerForLocation:(CGPoint) point
{
    BJOneViewController *childVC = [[BJOneViewController alloc] initWithTitle:@"Peek&Pop"];
    childVC.preferredContentSize = CGSizeMake(0.0f,300.f);
    NSLog(@"%@",childVC);
    return childVC;
}
//實(shí)現(xiàn)pop功能
-(void)previewingContext:(id <UIViewControllerPreviewing>)previewingContext commitViewController:(UIViewController *)viewControllerToCommit
{
    [self showViewController:viewControllerToCommit sender:self];
}
//BJOneViewController
//添加預(yù)覽界面的ActionSheet
-(NSArray<id<UIPreviewActionItem>> *)previewActionItems
{
    UIPreviewAction * action1 = [UIPreviewAction actionWithTitle:@"選項(xiàng)1" style:0 handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
        NSLog(@"click1");
    }];
    UIPreviewAction * action2 = [UIPreviewAction actionWithTitle:@"選項(xiàng)2" style:1 handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
        NSLog(@"click2");
    }];
    UIPreviewAction * action3 = [UIPreviewAction actionWithTitle:@"選項(xiàng)3" style:2 handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
        NSLog(@"click3");
    }];
    NSArray * actions = @[action1,action2,action3];
    return actions;
}