iOS开发--3D Touch的基本使用
1.桌面快捷菜单项 效果如图： 1.桌面快捷菜单项 效果如图： 1.桌面快捷菜单项 效果如图： 桌面快捷菜单 点击之后的效果如图： 点击桌面快捷菜单的效果 接下来看下具体实现：1).在-application:didFinishLaunchingWithOptions：方法中用-setShortcutItems:方法来添加快捷菜单项。 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { //3D Touch按压程序图标的快捷项 //快捷菜单的图标 UIApplicationShortcutIcon *icon1=[UIApplicationShortcutIcon iconWithType:UIApplicationShortcutIconTypeCaptureVideo]; UIApplicationShortcutIcon *icon2=[UIApplicationShortcutIcon iconWithType:UIApplicationShortcutIconTypeAdd]; UIApplicationShortcutIcon *icon3=[UIApplicationShortcutIcon iconWithTemplateImageName:@"search"]; //快捷菜单 UIApplicationShortcutItem *item1=[[UIApplicationShortcutItem alloc]initWithType:@"1" localizedTitle:@"嘿嘿" localizedSubtitle:nil icon:icon1 userInfo:nil]; UIApplicationShortcutItem *item2=[[UIApplicationShortcutItem alloc]initWithType:@"1" localizedTitle:@"呵呵" localizedSubtitle:@"干嘛去洗澡" icon:icon2 userInfo:nil]; UIApplicationShortcutItem *item3=[[UIApplicationShortcutItem alloc]initWithType:@"1" localizedTitle:@"搜索" localizedSubtitle:nil icon:icon3 userInfo:nil]; //设置app的快捷菜单 [[UIApplication sharedApplication] setShortcutItems:@[item1,item2,item3]]; //导航 self.window.rootViewController=[[UINavigationController alloc]initWithRootViewController:[ViewController new]]; return YES;} 2).在-application:performActionForShortcutItem:completionHandler:方法中实现点击快捷菜单的方法： //3D Touch按压程序图标的快捷项时触发的方法-(void)application:(UIApplication )application performActionForShortcutItem:(UIApplicationShortcutItem )shortcutItem completionHandler:(void (^)(BOOL))completionHandler{ NSString title; if([shortcutItem.localizedTitle isEqualToString:@"嘿嘿"]) { title=@"嘿嘿"; } else if([shortcutItem.localizedTitle isEqualToString:@"呵呵"]) { title=@"呵呵"; } else if([shortcutItem.localizedTitle isEqualToString:@"搜索"]) { title=@"搜索"; } //这里就弹个框子意思一下 //由于UIAlertView在iOS 9被废弃，因此选用UIAlertController UIAlertController alertController=[UIAlertController alertControllerWithTitle:@"提示" message:[NSString stringWithFormat:@"你点击了“%@”",title] preferredStyle:UIAlertControllerStyleAlert]; UIAlertAction action=[UIAlertAction actionWithTitle:@"知道了" style:UIAlertActionStyleDefault handler:^(UIAlertAction action) { [alertController dismissViewControllerAnimated:YES completion:nil]; }]; [alertController addAction:action]; [self.window.rootViewController presentViewController:alertController animated:YES completion:nil];} 2.程序内的3DTouch按压操作： 表视图 3DTouch按压的时候生成的预览 peek时上拉出现的菜单 1).首先，实现3DTouch的视图控制器要遵守：UIViewControllerPreviewingDelegate协议，它有2个required级别的协议方法：-previewingContext:viewControllerForLocation:以及-previewingContext:commitViewController: 2).检测3DTouch是否可用，并注册3DTouch： 检测3D Touch是否可用 -(BOOL)is3DTouchAvailiable{ if(self.traitCollection.forceTouchCapability==UIForceTouchCapabilityAvailable) return YES; return NO;} 注册3DTouch if([self is3DTouchAvailiable]) { [self registerForPreviewingWithDelegate:self sourceView:self.view]; } 3).实现协议方法： -(UIViewController *)previewingContext:(id<UIViewControllerPreviewing>)previewingContext viewControllerForLocation:(CGPoint)location{ NSIndexPath *indexPath=[_tbVew indexPathForRowAtPoint:CGPointMake(location.x, location.y-64)]; if(indexPath) { DetailViewController *detail=[[DetailViewController alloc]init]; detail.title=_dataArray[indexPath.row]; //detail.preferredContentSize=CGSizeMake(300, 300); __weak typeof(self) wkSelf=self; //------------上拉时的菜单------------------- //置顶及其点击逻辑 UIPreviewAction *topAction=[UIPreviewAction actionWithTitle:@"置顶" style:UIPreviewActionStyleDefault handler:^(UIPreviewAction * action, UIViewController * previewViewController) { [wkSelf.dataArray exchangeObjectAtIndex:indexPath.row withObjectAtIndex:0]; [wkSelf.tbVew reloadData]; [wkSelf showAlert:@"提示" body:@"已置顶"]; }]; //删除及其点击逻辑 UIPreviewAction *deleteAction=[UIPreviewAction actionWithTitle:@"删除" style:UIPreviewActionStyleDestructive handler:^(UIPreviewAction *action, UIViewController * previewViewController) { [wkSelf.dataArray removeObjectAtIndex:indexPath.row]; [wkSelf.tbVew reloadData]; [wkSelf showAlert:@"警告" body:@"已删除"]; }]; //传递上拉菜单项给detail detail.actions=@[topAction,deleteAction]; return detail; } return nil;}-(void)previewingContext:(id<UIViewControllerPreviewing>)previewingContext commitViewController:(UIViewController *)viewControllerToCommit{ [self showViewController:viewControllerToCommit sender:self];} 4).要previewing的视图控制器必须实现：-(NSArray<id<UIPreviewActionItem>> *)previewActionItems方法，该方法定义了peek时上拉出来的菜单： /**peek时上拉出来的菜单*/-(NSArray<id<UIPreviewActionItem>> *)previewActionItems{ return self.actions;}
