iOS之3DTouch的使用---很简单，看我就够啦~~

3DTouch是苹果在iOS9之后新推出的功能，功能大致可以分成两种，一种是长按app的icon，会出现以下的界面，还有一种是在app内部的某个视图上使用，效果如下图。 详细的效果也可以参见微信。微信就集成了这些功能，在微信的首页

第一个3DTouch的实现直接在AppDelegate类里面实现就行了，贴代码啦

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

// Override point for customization after application launch.

[self setup3DTouch:application];

return YES;

}

// 3DTouch点击的回调方法

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

{

NSLog(@"------%@",shortcutItem);

}

- (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:@"typeOne" localizedTitle:@"功能1" localizedSubtitle:@"" icon:cameraIcon userInfo:nil];

UIApplicationShortcutIcon *shareIcon = [UIApplicationShortcutIcon iconWithType:UIApplicationShortcutIconTypeShare];

UIApplicationShortcutItem *shareItem = [[UIApplicationShortcutItem alloc] initWithType:@"typeTwo" localizedTitle:@"功能2" localizedSubtitle:@"" icon:shareIcon userInfo:nil];

/** 将items 添加到app图标 */

application.shortcutItems = @[cameraItem,shareItem];

}

关于在app内部的3DTouch效果，可以参见微信的首页。

微信的首页是一个tableview列表，在实现表的协议方法的时候需要在这个方法里面注册

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

注册的方法如下：

// cell注册绑定，设置代理，实现协议

if ([self respondsToSelector:@selector(traitCollection)]) {

if ([self.traitCollection respondsToSelector:@selector(forceTouchCapability)]) {

if (self.traitCollection.forceTouchCapability == UIForceTouchCapabilityAvailable) {

[self registerForPreviewingWithDelegate:self sourceView:cell];

}

}

}

声明协议     <UIViewControllerPreviewingDelegate>

实现此协议的代理方法

#pragma mark - UIViewControllerPreviewingDelegate

// 3DTouch结束时预览的界面 这里预览的界面是--DetailViewController--

- (UIViewController *)previewingContext:(id<UIViewControllerPreviewing>)previewingContext viewControllerForLocation:(CGPoint)location

{

NSIndexPath *index = [mainTableView indexPathForCell:(UITableViewCell *)[previewingContext sourceView]];

DetailViewController *VC = [[DetailViewController alloc] init];

VC.viewTitle = [NSString stringWithFormat:@"%ld",(long)index.section];

previewingContext.sourceRect = previewingContext.sourceView.frame;

return VC;

}

// 点击功能模块需要实现的方法

-(void)previewingContext:(id<UIViewControllerPreviewing>)previewingContext commitViewController:(UIViewController *)viewControllerToCommit

{

[self showViewController:viewControllerToCommit sender:self];

}

注意，这里预览的界面是   DetailViewController  ，需要在 DetailViewController.m文件中实现下面的方法，这个是预览界面需要实现的点击功能

// 预览界面需要实现的点击功能

- (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];

}

--over--