IOS实现3DTouch功能

赶需求期间，想着别人应用都搞起3DTouch功能了，咱也来装逼一会，凸显下逼格。

废话少说，先搜索了前人的热心奉献，自己再动手丰衣足食，下面归纳总结下。

首先，想要体验3DTouch功能，必须至少得是iPhone6s iPhone6s plus的机型，没有的就去借，去偷，去抢，去跟老板申请测试机吧。

不过有牛人搞了个模拟器也能支持3DTouch功能，具体查看https://github.com/DeskConnect/SBShortcutMenuSimulator

以下总结由于作者懒，就不贴啥动图了，基本是静态截图。

3DTouch目前在手机上有两种体现方式，一种是用力按下app的图片icon，会弹出选项菜单，就像电脑上的右键。一种是在应用内的界面上用力按下，弹出的预览界面。

接下来就以这两种效果分别说明如何使用3DTouch功能。

一、iocn按下效果

这里有两种方式实现：

1、通过plist文件静态设置

UIApplicationShortcutItemUserInfo信息
UIApplicationShortcutItemIconFile图标名称
UIApplicationShortcutItemIconType图标类型
UIApplicationShortcutItemTitle标题
UIApplicationShortcutItemSubTitle副标题

然后在AppDelegate里面实现代理方法，通过绑定的标签type来实现具体代码。

-(void)application:(UIApplication *)application performActionForShortcutItem:(UIApplicationShortcutItem *)shortcutItem completionHandler:(void (^)(BOOL))completionHandler
{
UINavigationController *nav = (UINavigationController *)self.window.rootViewController;
if([shortcutItem.type isEqualToString:@"ONE"]){
UIViewController *vc = [[UIViewController alloc] init];
vc.title = @"第一个";
vc.view.backgroundColor = [UIColor redColor];
[nav pushViewController:vc animated:YES];
}else if ([shortcutItem.type isEqualToString:@"TWO"]){
UIViewController *vc = [[UIViewController alloc] init];
vc.title = @"第二个";
vc.view.backgroundColor = [UIColor greenColor];
[nav pushViewController:vc animated:YES];
}
}

首先在AppDelegate的didFinishLaunchingWithOptions里面初始化

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
self.window = [[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];
UINavigationController *nav = [[UINavigationController alloc]initWithRootViewController:[[ViewController alloc]init]];
self.window.rootViewController = nav;
[self.window makeKeyAndVisible];
[self setup3DTouch:application];
//
[self setupSpotlight];
return YES;
}

- (void)setup3DTouch:(UIApplication *)application
{
/**
type 该item 唯一标识符
localizedTitle ：标题
localizedSubtitle：副标题
icon：icon图标 可以使用系统类型 也可以使用自定义的图片
userInfo：用户信息字典 自定义参数，完成具体功能需求
*/
//
UIApplicationShortcutIcon *icon1 = [UIApplicationShortcutIcon iconWithTemplateImageName:@"标签.png"];
UIApplicationShortcutIcon *cameraIcon = [UIApplicationShortcutIcon iconWithType:UIApplicationShortcutIconTypeCompose];
UIApplicationShortcutItem *cameraItem = [[UIApplicationShortcutItem alloc] initWithType:@"ONE" localizedTitle:@"拍照" localizedSubtitle:@"" icon:cameraIcon userInfo:nil];
UIApplicationShortcutIcon *shareIcon = [UIApplicationShortcutIcon iconWithType:UIApplicationShortcutIconTypeShare];
UIApplicationShortcutItem *shareItem = [[UIApplicationShortcutItem alloc] initWithType:@"TWO" localizedTitle:@"分享" localizedSubtitle:@"" icon:shareIcon userInfo:nil];
/** 将items 添加到app图标 */
application.shortcutItems = @[cameraItem,shareItem];
}

-(void)application:(UIApplication *)application performActionForShortcutItem:(UIApplicationShortcutItem *)shortcutItem completionHandler:(void (^)(BOOL))completionHandler
{
UINavigationController *nav = (UINavigationController *)self.window.rootViewController;
if([shortcutItem.type isEqualToString:@"ONE"]){
UIViewController *vc = [[UIViewController alloc] init];
vc.title = @"第一个";
vc.view.backgroundColor = [UIColor redColor];
[nav pushViewController:vc animated:YES];
}else if ([shortcutItem.type isEqualToString:@"TWO"]){
UIViewController *vc = [[UIViewController alloc] init];
vc.title = @"第二个";
vc.view.backgroundColor = [UIColor greenColor];
[nav pushViewController:vc animated:YES];
}
}

1、比如用力按下某个cell，弹出预览的小视图，同时上滑底部出现若干个选项（Peek功能）

首先注册需要实现Touch效果的View，判断下设备系统支不支持，不然会崩溃

把当前的cell注册绑定，然后试图界面实现UIViewControllerPreviewingDelegate代理

#pragma mark - UIViewControllerPreviewingDelegate
-(UIViewController *)previewingContext:(id<UIViewControllerPreviewing>)previewingContext viewControllerForLocation:(CGPoint)location
{
NSIndexPath *index = [self.tableView indexPathForCell:(UITableViewCell *)[previewingContext sourceView]];
NewsListModel *model = self.lists[index.row];
NewsDetailsViewController *showVC = [[NewsDetailsViewController alloc]init];
showVC.newsID = model.news_id;
CGRect rect = CGRectMake(0, 0,
previewingContext.sourceView.ab_width, previewingContext.sourceView.ab_height);
previewingContext.sourceRect = rect;
return showVC;
}

- (NSArray<id<UIPreviewActionItem>> *)previewActionItems
{
UIPreviewAction *action0 = [UIPreviewAction actionWithTitle:@"action0" style:UIPreviewActionStyleDefault handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
NSLog(@"%s, line = %d, action0 = %@, previewViewController = %@", __FUNCTION__, __LINE__, action, previewViewController);
}];
UIPreviewAction *action1 = [UIPreviewAction actionWithTitle:@"action1" style:UIPreviewActionStyleDestructive handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
NSLog(@"%s, line = %d, action1 = %@, previewViewController = %@", __FUNCTION__, __LINE__, action, previewViewController);
}];
UIPreviewAction *action2 = [UIPreviewAction actionWithTitle:@"action2" style:UIPreviewActionStyleSelected handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
NSLog(@"%s, line = %d, action2 = %@, previewViewController = %@", __FUNCTION__, __LINE__, action, previewViewController);
}];
UIPreviewAction *action3 = [UIPreviewAction actionWithTitle:@"action3" style:UIPreviewActionStyleSelected handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
NSLog(@"%s, line = %d, action2 = %@, previewViewController = %@", __FUNCTION__, __LINE__, action, previewViewController);
}];
//该按钮可以是一个组,点击该组时,跳到组里面的按钮.
UIPreviewActionGroup *actionGroup = [UIPreviewActionGroup actionGroupWithTitle:@"actionGroup" style:UIPreviewActionStyleSelected actions:@[action2, action3]];
//直接返回数组.
return
@[action0,action1,actionGroup];
}

再实现一个代理方法

#pragma mark - UIViewControllerPreviewingDelegate
-(void)previewingContext:(id<UIViewControllerPreviewing>)previewingContext commitViewController:(UIViewController *)viewControllerToCommit
{
[self showViewController:viewControllerToCommit sender:self];
}

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