ios 3DTouch基本使用教程

尽管3DTouch已经出来很久，但是项目最近才接触到，所以就整理了一下自己实现的代码，记录。

1.实现重按app，弹出窗口（如图所示）

在

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions方法中实现：

    //添加3dtouch
    //动态加载自定义的ShortcutItem
    if (application.shortcutItems.count == 0) {
    
        UIMutableApplicationShortcutItem *itemScan = [[UIMutableApplicationShortcutItem alloc]initWithType:@"Scan"  localizedTitle:@"扫一扫" localizedSubtitle:nil icon:[UIApplicationShortcutIcon iconWithTemplateImageName:@"icon2"] userInfo:nil];
        UIMutableApplicationShortcutItem *itemWrite = [[UIMutableApplicationShortcutItem alloc]initWithType:@"listen" localizedTitle:@"去写作" localizedSubtitle:nil icon:[UIApplicationShortcutIcon iconWithTemplateImageName:@"icon1"] userInfo:nil];

        application.shortcutItems = @[itemScan,itemListen];
    }
/*ps：about icon
[UIApplicationShortcutIcon iconWithTemplateImageName:@"icon1"]//这是替换自己的图片
[UIApplicationShortcutIcon iconWithType:UIApplicationShortcutIconTypeCompose];//这是系统内的特定icon*/

　　随后实现：

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

在该方法中，可以通过判断唯一标示符（之前设置的initwithtype：）或者判断localizedTitle来区别点击的哪一行

而后可以使用通知或者直接导航等等跳转到你想要去的界面，这里就不细说了。

2.重按cell的3DTouch效果

 

 实现

UIViewControllerPreviewingDelegate代理方法

- (void)viewDidLoad {
       [self registerPreview];
}

-(void)registerPreview{
//判断是否支持3dtouch，设置委托代理
    if (self.traitCollection.forceTouchCapability == UIForceTouchCapabilityAvailable) {
        [self registerForPreviewingWithDelegate:self sourceView:self.tableView];
    }
    else {
        NSLog(@"该设备不支持3D-Touch");
    }
}

#pragma mark - UIViewControllerPreviewingDelegate
- (nullable UIViewController *)previewingContext:(id <UIViewControllerPreviewing>)previewingContext viewControllerForLocation:(CGPoint)location
{
    NSIndexPath * indexPath =[_tableView indexPathForRowAtPoint:location];
    
    UITableViewCell * cell = [_tableView cellForRowAtIndexPath:indexPath];
//以上得到你点击的哪一行的cell
    if (!cell) {
        return nil;
    }
//显示3dtouchpreviewViewcontroller界面
    3DTouchPreviewViewController *detailVC =[[3DTouchPreviewViewController alloc]init];
    detailVC.preferredContentSize = CGSizeMake(0, 0);
    previewingContext.sourceRect = cell.frame;
    return detailVC;
}

- (void)previewingContext:(id <UIViewControllerPreviewing>)previewingContext commitViewController:(UIViewController *)viewControllerToCommit
{
    [self.navigationController pushViewController:viewControllerToCommit animated:NO];
}

在3dtouchpreviewViewController.m中实现：

- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.view.backgroundColor =[UIColor whiteColor];
   //你所想要显示的东西
    UILabel *textlabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, self.view.bounds.size.width, 40)];
    textlabel.backgroundColor = [UIColor colorWithRed:54/255.0 green:54/255.0 blue:54/255.0 alpha:1];
    textlabel.textColor = [UIColor whiteColor];
    textlabel.text = @"哈哈哈哈哈哈";
    textlabel.textAlignment = NSTextAlignmentCenter;
    textlabel.font = [UIFont fontWithName:@"STHeitiSC-Light" size:16];
    [self.view addSubview:textlabel];
    
    _imageViewShow =[[UIImageView alloc]init];
    _imageViewShow.frame = CGRectMake(0, 40, self.view.bounds.size.width, self.view.bounds.size.height-40);
    _imageViewShow.image = [UIImage imageNamed:@"picture"];
    [self.view addSubview:_imageViewShow];

}

//下面的actionview
- (NSArray <id <UIPreviewActionItem>> *)previewActionItems
{
    UIPreviewAction *action = [UIPreviewAction actionWithTitle:@"删除" style: UIPreviewActionStyleDestructive handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
        NSLog(@"实现删除功能！");
    }];
    
    return @[action];
}

　　以上就是3DTouch的简单使用，如有不足之处，欢迎指出。