ios 3DTouch基本使用教程

盡管3DTouch已經出來很久，但是項目最近才接觸到，所以就整理了一下自己實現的代碼，記錄。

1.實現重按app，彈出窗口（如圖所示）

在

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions方法中實現：

    //添加3dtouch
    //動態加載自定義的ShortcutItem
    if (application.shortcutItems.count == 0) {
    
        UIMutableApplicationShortcutItem *itemScan = [[UIMutableApplicationShortcutItem alloc]initWithType:@"Scan"  localizedTitle:@"掃一掃" localizedSubtitle:nil icon:[UIApplicationShortcutIcon iconWithTemplateImageName:@"icon2"] userInfo:nil];
        UIMutableApplicationShortcutItem *itemWrite = [[UIMutableApplicationShortcutItem alloc]initWithType:@"listen" localizedTitle:@"去寫作" localizedSubtitle:nil icon:[UIApplicationShortcutIcon iconWithTemplateImageName:@"icon1"] userInfo:nil];

        application.shortcutItems = @[itemScan,itemListen];
    }
/*ps：about icon
[UIApplicationShortcutIcon iconWithTemplateImageName:@"icon1"]//這是替換自己的圖片
[UIApplicationShortcutIcon iconWithType:UIApplicationShortcutIconTypeCompose];//這是系統內的特定icon*/

　　隨后實現：

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

在該方法中，可以通過判斷唯一標示符（之前設置的initwithtype：）或者判斷localizedTitle來區別點擊的哪一行

而后可以使用通知或者直接導航等等跳轉到你想要去的界面，這里就不細說了。

2.重按cell的3DTouch效果

 

 實現

UIViewControllerPreviewingDelegate代理方法

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

-(void)registerPreview{
//判斷是否支持3dtouch，設置委托代理
    if (self.traitCollection.forceTouchCapability == UIForceTouchCapabilityAvailable) {
        [self registerForPreviewingWithDelegate:self sourceView:self.tableView];
    }
    else {
        NSLog(@"該設備不支持3D-Touch");
    }
}

#pragma mark - UIViewControllerPreviewingDelegate
- (nullable UIViewController *)previewingContext:(id <UIViewControllerPreviewing>)previewingContext viewControllerForLocation:(CGPoint)location
{
    NSIndexPath * indexPath =[_tableView indexPathForRowAtPoint:location];
    
    UITableViewCell * cell = [_tableView cellForRowAtIndexPath:indexPath];
//以上得到你點擊的哪一行的cell
    if (!cell) {
        return nil;
    }
//顯示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中實現：

- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.view.backgroundColor =[UIColor whiteColor];
   //你所想要顯示的東西
    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:@"刪除" style: UIPreviewActionStyleDestructive handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
        NSLog(@"實現刪除功能！");
    }];
    
    return @[action];
}

　　以上就是3DTouch的簡單使用，如有不足之處，歡迎指出。