iOS開發--3D Touch的基本使用1.桌面快捷菜單項1.桌面快捷菜單項

1.桌面快捷菜單項

效果如圖：

桌面快捷菜單

點選之後的效果如圖：

點選桌面快捷菜單的效果

接下來看下具體實作：

1).在-application:didFinishLaunchingWithOptions：

方法中用-setShortcutItems:方法來添加快捷菜單項。

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    //3D Touch按壓程式圖示的快捷項
    //快捷菜單的圖示
    UIApplicationShortcutIcon *icon1=[UIApplicationShortcutIcon iconWithType:UIApplicationShortcutIconTypeCaptureVideo];
    UIApplicationShortcutIcon *icon2=[UIApplicationShortcutIcon iconWithType:UIApplicationShortcutIconTypeAdd];
    UIApplicationShortcutIcon *icon3=[UIApplicationShortcutIcon iconWithTemplateImageName:@"search"];
    //快捷菜單
    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:@"幹嘛去洗澡"
                                                                               icon:icon2
                                                                           userInfo:nil];
    UIApplicationShortcutItem *item3=[[UIApplicationShortcutItem alloc]initWithType:@"1"
                                                                     localizedTitle:@"搜尋"
                                                                  localizedSubtitle:nil
                                                                               icon:icon3
                                                                           userInfo:nil];
    //設定app的快捷菜單
    [[UIApplication sharedApplication] setShortcutItems:@[item1,item2,item3]];
    //導航
    self.window.rootViewController=[[UINavigationController alloc]initWithRootViewController:[ViewController new]];
    return YES;
}      

2).在-application:performActionForShortcutItem:completionHandler:方法中實作點選快捷菜單的方法：

//3D Touch按壓程式圖示的快捷項時觸發的方法
-(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:@"搜尋"])
    {
        title=@"搜尋";
    }
    //這裡就彈個框子意思一下
    //由于UIAlertView在iOS 9被廢棄，是以選用UIAlertController
    UIAlertController alertController=[UIAlertController alertControllerWithTitle:@"提示"
                                                                           message:[NSString stringWithFormat:@"你點選了“%@”",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.程式内的3DTouch按壓操作：

表視圖

3DTouch按壓的時候生成的預覽

peek時上拉出現的菜單

1).首先，實作3DTouch的視圖控制器要遵守：

UIViewControllerPreviewingDelegate協定，它有2個required級别的協定方法：

-previewingContext:viewControllerForLocation:

以及

-previewingContext:commitViewController:

2).檢測3DTouch是否可用，并注冊3DTouch：

檢測3D Touch是否可用

-(BOOL)is3DTouchAvailiable
{
 if(self.traitCollection.forceTouchCapability==UIForceTouchCapabilityAvailable)
        return YES;
    return NO;
}      

注冊3DTouch

if([self is3DTouchAvailiable])
    {
        [self registerForPreviewingWithDelegate:self sourceView:self.view];
    }      

3).實作協定方法：

-(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;
        //------------上拉時的菜單-------------------
        //置頂及其點選邏輯
        UIPreviewAction *topAction=[UIPreviewAction actionWithTitle:@"置頂" style:UIPreviewActionStyleDefault handler:^(UIPreviewAction * action, UIViewController * previewViewController) {
            [wkSelf.dataArray exchangeObjectAtIndex:indexPath.row withObjectAtIndex:0];
            [wkSelf.tbVew reloadData];
            [wkSelf showAlert:@"提示" body:@"已置頂"];
        }];
        //删除及其點選邏輯
        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"];
        }];
        //傳遞上拉菜單項給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的視圖控制器必須實作：

-(NSArray<id<UIPreviewActionItem>> *)previewActionItems方法，該方法定義了peek時上拉出來的菜單：

/**peek時上拉出來的菜單*/
-(NSArray<id<UIPreviewActionItem>> *)previewActionItems
{
    return self.actions;
}