With iOS 9, new iPhone models add a third dimension to the user interface.

• A user can now press your Home screen icon to immediately access functionality provided by your app.
• Within your app, a user can now press views to see previews of additional content and gain accelerated access to features.

模擬器實(shí)現(xiàn)3D Touch功能

1梦皮、插件安裝

插件下載地址：
https://github.com/DeskConnect/SBShortcutMenuSimulator

• 下載插件到本地(在terminal操作)：

git clone https://github.com/DeskConnect/SBShortcutMenuSimulator.git

插件下載完成

• 安裝插件：

cd SBShortcutMenuSimulator
 make  

插件安裝完成

2握础、插件使用

• 啟動(dòng)插件

xcrun simctl spawn booted launchctl debug system/com.apple.SpringBoard --environment DYLD_INSERT_LIBRARIES=$PWD/SBShortcutMenuSimulator.dylib
xcrun simctl spawn booted launchctl stop com.apple.SpringBoard

注意：如果運(yùn)行過程中出現(xiàn)：No devices are booted. 是因?yàn)槟愕哪M器沒有啟動(dòng)垦垂，這時(shí)候啟動(dòng)你的模擬器即可饥悴。

• 預(yù)覽效果

echo 'com.apple.mobilecal' | nc 127.0.0.1 8000

3D Touch效果

注意：
1竿秆、'com.apple.mobilecal'是應(yīng)用的Bundle ID绍绘，如果你要測(cè)試自己的應(yīng)用的3D Touch效果没卸，將該字段換成自己應(yīng)用的Bundle ID戳晌。上面的示例應(yīng)用是系統(tǒng)日歷泞辐。
2笔横、如果出現(xiàn)SpringBorad意外退出，可能是你的模擬器高于iOS9.1咐吼，可以嘗試下載iOS9.1或iOS9.0的模擬器然后重新以上“插件使用”操作吹缔。

檢測(cè)是否支持3D Touch

• 在UIViewController生命周期的viewWillAppear中做判斷:

-(void)viewWillAppear:(BOOL)animated{
    [super viewWillAppear:animated];
    if (self.traitCollection.forceTouchCapability == UIForceTouchCapabilityAvailable) {
        //3D Touch可用
    }
    else{
        //3D Touch不可用
    }
}

UIForceTouchCapability是個(gè)枚舉

@property (nonatomic, readonly) UIForceTouchCapability forceTouchCapability NS_AVAILABLE_IOS(9_0);
typedef NS_ENUM(NSInteger, UIForceTouchCapability) {
    UIForceTouchCapabilityUnknown = 0,        //3D Touch檢測(cè)失敗
    UIForceTouchCapabilityUnavailable = 1,    //3D Touch不可用
    UIForceTouchCapabilityAvailable = 2       //3D Touch可用
};

• 也可以通過以下方法實(shí)現(xiàn)判斷，當(dāng)界面環(huán)境發(fā)生改變時(shí)會(huì)調(diào)用該方法：

-(void)traitCollectionDidChange:(UITraitCollection *)previousTraitCollection {
    if (previousTraitCollection.forceTouchCapability == UIForceTouchCapabilityAvailable) {
        NSLog(@"3D Touch可用");
    }
    else{
        NSLog(@"3D Touch不可用");
    }
}

3D Touch開發(fā)

iOS9提供了四類API（Home Screen Quick Action锯茄、UIKit Peek & Pop 厢塘、WebView Peek & Pop 和UITouch Force Properties）用于操作3D Touch(Pressure Sensitivity 茶没、 Peek and Pop 和 Quick Actions)。

1晚碾、Home Screen Quick Actions

用力按壓主屏幕的應(yīng)用Icon抓半，可以通過3D Touch呼出一個(gè)快捷菜單，點(diǎn)擊快速進(jìn)入相關(guān)功能模塊格嘁。

Map Home Screen Quick Actions

其中系統(tǒng)自帶的圖片有以下類型：

typedef NS_ENUM(NSInteger, UIApplicationShortcutIconType) {
    UIApplicationShortcutIconTypeCompose,
    UIApplicationShortcutIconTypePlay,
    UIApplicationShortcutIconTypePause,
    UIApplicationShortcutIconTypeAdd,
    UIApplicationShortcutIconTypeLocation,
    UIApplicationShortcutIconTypeSearch,
    UIApplicationShortcutIconTypeShare,
    UIApplicationShortcutIconTypeProhibit       NS_ENUM_AVAILABLE_IOS(9_1),
    UIApplicationShortcutIconTypeContact        NS_ENUM_AVAILABLE_IOS(9_1),
    UIApplicationShortcutIconTypeHome           NS_ENUM_AVAILABLE_IOS(9_1),
    UIApplicationShortcutIconTypeMarkLocation   NS_ENUM_AVAILABLE_IOS(9_1),
    UIApplicationShortcutIconTypeFavorite       NS_ENUM_AVAILABLE_IOS(9_1),
    UIApplicationShortcutIconTypeLove           NS_ENUM_AVAILABLE_IOS(9_1),
    UIApplicationShortcutIconTypeCloud          NS_ENUM_AVAILABLE_IOS(9_1),
    UIApplicationShortcutIconTypeInvitation     NS_ENUM_AVAILABLE_IOS(9_1),
    UIApplicationShortcutIconTypeConfirmation   NS_ENUM_AVAILABLE_IOS(9_1),
    UIApplicationShortcutIconTypeMail           NS_ENUM_AVAILABLE_IOS(9_1),
    UIApplicationShortcutIconTypeMessage        NS_ENUM_AVAILABLE_IOS(9_1),
    UIApplicationShortcutIconTypeDate           NS_ENUM_AVAILABLE_IOS(9_1),
    UIApplicationShortcutIconTypeTime           NS_ENUM_AVAILABLE_IOS(9_1),
    UIApplicationShortcutIconTypeCapturePhoto   NS_ENUM_AVAILABLE_IOS(9_1),
    UIApplicationShortcutIconTypeCaptureVideo   NS_ENUM_AVAILABLE_IOS(9_1),
    UIApplicationShortcutIconTypeTask           NS_ENUM_AVAILABLE_IOS(9_1),
    UIApplicationShortcutIconTypeTaskCompleted  NS_ENUM_AVAILABLE_IOS(9_1),
    UIApplicationShortcutIconTypeAlarm          NS_ENUM_AVAILABLE_IOS(9_1),
    UIApplicationShortcutIconTypeBookmark       NS_ENUM_AVAILABLE_IOS(9_1),
    UIApplicationShortcutIconTypeShuffle        NS_ENUM_AVAILABLE_IOS(9_1),
    UIApplicationShortcutIconTypeAudio          NS_ENUM_AVAILABLE_IOS(9_1),
    UIApplicationShortcutIconTypeUpdate         NS_ENUM_AVAILABLE_IOS(9_1)
} NS_ENUM_AVAILABLE_IOS(9_0) __TVOS_PROHIBITED;

創(chuàng)建Quick Action有兩種方式：靜態(tài)和動(dòng)態(tài)

• 靜態(tài)創(chuàng)建
  靜態(tài)創(chuàng)建只需在Info.plist上添加相關(guān)功能設(shè)置：

  
  
  
  

  也可以右擊Info.plist -> Open As -> Source Code,輸入：

<key>UIApplicationShortcutItems</key>
    <array>
        <dict>
            <key>UIApplicationShortcutItemIconType</key>
            <string>UIApplicationShortcutIconTypeSearch</string>
            <key>UIApplicationShortcutItemSubtitle</key>
            <string>搜索好友</string>
            <key>UIApplicationShortcutItemTitle</key>
            <string>搜索</string>
            <key>UIApplicationShortcutItemType</key>
            <string>1</string>
            <key>UIApplicationShortcutItemUserInfo</key>
            <dict/>
        </dict>
        <dict>
            <key>UIApplicationShortcutItemIconType</key>
            <string>UIApplicationShortcutIconTypeAdd</string>
            <key>UIApplicationShortcutItemSubtitle</key>
            <string>添加好友</string>
            <key>UIApplicationShortcutItemTitle</key>
            <string>添加</string>
            <key>UIApplicationShortcutItemType</key>
            <string>2</string>
            <key>UIApplicationShortcutItemUserInfo</key>
            <dict/>
        </dict>
    </array>

• 動(dòng)態(tài)創(chuàng)建
  代碼創(chuàng)建3D Touch的item：

    UIApplicationShortcutItem *item1 = [[UIApplicationShortcutItem alloc] initWithType:@"3" localizedTitle:@"掃一掃"];
    UIApplicationShortcutIcon *icon = [UIApplicationShortcutIcon iconWithTemplateImageName:@"3DSearch"];
    UIApplicationShortcutItem *item2 = [[UIApplicationShortcutItem alloc] initWithType:@"4" localizedTitle:@"設(shè)置" localizedSubtitle:nil icon:icon userInfo:nil];
    [UIApplication sharedApplication].shortcutItems = @[item1,item2];

創(chuàng)建方法：

-(instancetype)initWithType:(NSString *)type localizedTitle:(NSString *)localizedTitle localizedSubtitle:(nullable NSString *)localizedSubtitle icon:(nullable UIApplicationShortcutIcon *)icon userInfo:(nullable NSDictionary *)userInfo NS_DESIGNATED_INITIALIZER;
-(instancetype)initWithType:(NSString *)type localizedTitle:(NSString *)localizedTitle;

設(shè)置圖片方法：

+(instancetype)iconWithType:(UIApplicationShortcutIconType)type;
+(instancetype)iconWithTemplateImageName:(NSString *)templateImageName;笛求。

動(dòng)態(tài)＋靜態(tài) 創(chuàng)建

注意：
(1)系統(tǒng)限制每個(gè)App最多能夠顯示4個(gè)Action Item，其中包括靜態(tài)方式和動(dòng)態(tài)方式進(jìn)行創(chuàng)建的糕簿，超過個(gè)數(shù)不顯示探入。
(2)如果靜態(tài)和動(dòng)態(tài)方式同時(shí)使用的時(shí)候，給UIApplication的shortcutItems賦值的時(shí)候不會(huì)覆蓋靜態(tài)創(chuàng)建的items懂诗。
(3)動(dòng)態(tài)創(chuàng)建的方式只有在程序第一次啟動(dòng)之后才會(huì)顯示蜂嗽。
(4)如果你要顯示系統(tǒng)圖片時(shí)，info.plist中不要添加
UIApplicationShortcutItemIconFile屬性殃恒，因?yàn)楫?dāng)
UIApplicationShortcutItemIconFile和UIApplicationShortcutItemIconType同時(shí)存在時(shí)植旧，會(huì)優(yōu)先使用UIApplicationShortcutItemIconFile設(shè)置的圖片。
(5)Quick Actions顯示的icon在左邊或者右邊芋类，這個(gè)是跟你的app 放在你手機(jī)的位置有關(guān)系隆嗅，這個(gè)iOS會(huì)自動(dòng)處理掉。

點(diǎn)擊Home Screen Quick Actions的相應(yīng)回調(diào)

• iOS9新增以下方法實(shí)現(xiàn)點(diǎn)擊 Home Screen Quick Action的相應(yīng)回調(diào)侯繁，我們可以通過shortcutItem的type或者localizedTitle屬性（因?yàn)檫@兩個(gè)屬性時(shí)必須設(shè)置的）判斷點(diǎn)擊了哪個(gè)item：

-(void)application:(UIApplication *)application performActionForShortcutItem:(UIApplicationShortcutItem *)shortcutItem completionHandler:(void(^)(BOOL succeeded))completionHandler {
    NSInteger index = shortcutItem.type.integerValue;
    switch (index) {
        case 1:
            NSLog(@"搜索");
            break;
        case 2:
            NSLog(@"添加");
            break;
        case 3:
            NSLog(@"掃一掃");
            break;
        case 4:
            NSLog(@"設(shè)置");
            break;
        default:
            break;
    }
}

• 還可以通過入口方法里面進(jìn)行判斷(該方法只會(huì)在程序從未啟動(dòng)到啟動(dòng)過程中才會(huì)被調(diào)用)：

-(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    
    if (launchOptions) {
        UIApplicationShortcutItem *item = [launchOptions valueForKey:UIApplicationLaunchOptionsShortcutItemKey];
        NSInteger index = item.type.integerValue;
        switch (index) {
            case 1:
                NSLog(@"搜索");
                break;
            case 2:
                NSLog(@"添加");
                break;
            case 3:
                NSLog(@"掃一掃");
                break;
            case 4:
                NSLog(@"設(shè)置");
                break;
            default:
                break;
        }
    }
    
    return YES;
}

2胖喳、Peek & Pop

A peek :
Appears while a user presses on an item that supports peek and disappears when the user’s finger lifts
Opens a detailed view of the item—called a pop—when users press a little deeper on the peek view
Can provide quick actions related to the item when users swipe up within the peek view

A peek preview in Safari

Quick actions in a Safari peek

UIKit Peek & Pop

• 給ViewController上的view注冊(cè)3D Touch（先判斷設(shè)備是否支持3D Touch）

if (self.traitCollection.forceTouchCapability == UIForceTouchCapabilityAvailable)
    {
        [self registerForPreviewingWithDelegate:(id)self sourceView:self.view];
        
    }

• 新建一個(gè)新的UIViewController名為：ContentViewController，以便之后peek時(shí)顯示該ContentViewController贮竟，在ContentViewController中重寫以下方法實(shí)現(xiàn)Quick actions：

-(NSArray<id<UIPreviewActionItem>> *)previewActionItems{
    UIPreviewAction *action1 = [UIPreviewAction actionWithTitle:@"action1" style:UIPreviewActionStyleDefault handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
        NSLog(@"action1");
    }];
    
    UIPreviewAction *action2 = [UIPreviewAction actionWithTitle:@"action2" style:UIPreviewActionStyleSelected handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
        NSLog(@"action2");
    }];
    NSArray *actions = @[action1,action2];
    UIPreviewActionGroup *group1 = [UIPreviewActionGroup actionGroupWithTitle:@"Action Group" style:UIPreviewActionStyleDefault actions:actions];
    NSArray *array = @[group1];
    return array;
}

注意：
1丽焊、該方法不是必須要重寫，根據(jù)自己的需求而定咕别。
2技健、這里是把兩個(gè)action放在了一個(gè)組里顯示，也可以直接顯示兩個(gè)action惰拱。

• ViewController遵循UIViewControllerPreviewingDelegate協(xié)議：

//UIViewControllerPreviewingDelegate
//稍微重按調(diào)用該方法：（peek）
-(UIViewController *)previewingContext:(id<UIViewControllerPreviewing>)previewingContext viewControllerForLocation:(CGPoint)location{
    //防止重復(fù)加入
    if ([self.presentedViewController isKindOfClass:[ContentViewController class]]){
        return nil;
    }
    else {
        ContentViewController *contentVC = [[ContentViewController alloc] init];
        return contentVC;
    }
}
//加重按壓調(diào)用該方法：（pop）
-(void)previewingContext:(id<UIViewControllerPreviewing>)previewingContext commitViewController:(UIViewController *)viewControllerToCommit{
    //跳轉(zhuǎn)到某個(gè)ViewController
    ContentViewController *contentVC = [[ContentViewController alloc] init];
[self.navigationController pushViewController : contentVC animated:YES];
}

• 效果圖：

  
  
  peek
  
  
  Quick actions
  
  
  點(diǎn)擊Action Group
  
  
  pop

WebKit Peek & Pop

WebKit Peek & Pop 的操作和UIKit差不多雌贱，只是顯示的是Web網(wǎng)頁。
顯示網(wǎng)頁有三種方法：
1偿短、openUrl離開應(yīng)用進(jìn)入safari打開網(wǎng)頁
2欣孤、UIWebView或者WKWebView自定義視圖在應(yīng)用內(nèi)打開網(wǎng)頁
3、在iOS9.0后新增SFSafariViewController類昔逗，用于顯示web網(wǎng)頁降传。并通過SFSafariViewControllerDelegate的以下方法實(shí)現(xiàn)回到應(yīng)用操作。

-(void)safariViewControllerDidFinish:(SFSafariViewController *)controller{
    [controller dismissViewControllerAnimated:YES completion:nil];
}

注意：
1勾怒、方法1不能實(shí)現(xiàn)3D Touch婆排。
2声旺、使用方法2實(shí)現(xiàn)3D Touch時(shí)，要設(shè)置屬性 allowsLinkPreview 為Yes（默認(rèn)是NO）段只。

參考文檔

http://pingguohe.net/2015/10/12/3D-Touch-2.html
http://www.devzeng.com/blog/ios9-3d-touch.html