上一篇3D touch中有很多不足之處,今天我再補(bǔ)充一些.
用過(guò)3dtouch的朋友都知道,按壓圖標(biāo)后會(huì)出來(lái)幾個(gè)item,點(diǎn)擊任意一個(gè)item后會(huì)進(jìn)入到不同的頁(yè)面,還有進(jìn)入程序后第一次重壓會(huì)有個(gè)上拉的動(dòng)作,并會(huì)出現(xiàn)幾個(gè)選項(xiàng).今天就來(lái)實(shí)現(xiàn)這2個(gè)功能.

在AppDelegate里面:

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

    ViewController *vc = [[ViewController alloc]init];
    UINavigationController *nav = [[UINavigationController alloc]initWithRootViewController:vc];
    _window.rootViewController = nav;
    [_window makeKeyAndVisible];
    UIApplicationShortcutItem *item1 = [[UIApplicationShortcutItem alloc]initWithType:@"搜索" localizedTitle:@"搜索"];
    UIApplicationShortcutItem *item2 = [[UIApplicationShortcutItem alloc]initWithType:@"第二頁(yè)" localizedTitle:@"第二頁(yè)"];
    NSArray *shortItems = @[item1,item2];
    [[UIApplication sharedApplication]setShortcutItems:shortItems];
    return YES;
}

這里沒(méi)什么問(wèn)題,很簡(jiǎn)單,就是按壓圖標(biāo)后出現(xiàn)2個(gè)item,重點(diǎn)是點(diǎn)擊item后實(shí)現(xiàn)push到具體的界面.請(qǐng)看下面:

-(void)application:(UIApplication *)application performActionForShortcutItem:(UIApplicationShortcutItem *)shortcutItem completionHandler:(void (^)(BOOL))completionHandler
{
    if ([shortcutItem.localizedTitle isEqual:@"搜索"]) {
        ViewController *vc = [[ViewController alloc]init];
        UINavigationController *nav = [[UINavigationController alloc]initWithRootViewController:vc];
        _window.rootViewController = nav;
        [_window makeKeyAndVisible];
        SearchView *sv = [[SearchView alloc]init];
        [sv.searchBar becomeFirstResponder];
        [nav pushViewController:sv animated:YES];
    }
    else if([shortcutItem.localizedTitle isEqual:@"第二頁(yè)"])
    {
        ViewController *vc = [[ViewController alloc]init];
        UINavigationController *nav = [[UINavigationController alloc]initWithRootViewController:vc];
        _window.rootViewController = nav;
        [_window makeKeyAndVisible];
        SecondViewController *sv = [[SecondViewController alloc]init];
        [nav pushViewController:sv animated:YES];
    }
}

這個(gè)方法是專門(mén)為3DTouch所用的,參數(shù)shortcutItem就是具體點(diǎn)擊的那個(gè)item,通過(guò)判斷它的localizedTitle來(lái)跳轉(zhuǎn)到不同的界面.
如圖:

點(diǎn)擊不同item進(jìn)入不同界面

下面是重壓后上拉動(dòng)作.
首先,我們?cè)赩iewcontroller里面創(chuàng)建一個(gè)tableView,并讓他擁有簡(jiǎn)單的3DTouch效果,代碼如下:

#import "ViewController.h"
#import "SearchView.h"
#import "SecondViewController.h"
@interface ViewController ()<UITableViewDataSource,UITableViewDelegate,UIViewControllerPreviewingDelegate>
@property(nonatomic, strong)UITableView *tableView;
@property(nonatomic, strong)NSArray *cellArray;
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor whiteColor];
    self.title = @"第一頁(yè)";
    _tableView = [[UITableView alloc]initWithFrame:self.view.frame];
    _tableView.delegate = self;
    _tableView.dataSource = self;
    _cellArray = @[@"第一頁(yè)",@"第二頁(yè)",@"搜索"];
    [self.view addSubview:_tableView];
}

-(CGFloat )tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    return 40;
}

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return _cellArray.count;
}

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *identifier = @"cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];
    if (!cell) {
        cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier];
    }
    [self registerForPreviewingWithDelegate:self sourceView:cell];

    cell.textLabel.text = _cellArray[indexPath.row];
    return cell;
}

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (indexPath.row == 1) {
        [self.navigationController pushViewController:[[SecondViewController alloc]init] animated:YES];
    }
    else if(indexPath.row == 2)
    {
        [self.navigationController pushViewController:[[SearchView alloc]init] animated:YES];
    }
}

-(UIViewController *)previewingContext:(id<UIViewControllerPreviewing>)previewingContext viewControllerForLocation:(CGPoint)location
{
    NSIndexPath *indexPath = [_tableView indexPathForCell:(UITableViewCell* )[previewingContext sourceView]];
    if (indexPath.row == 0) {
        ViewController *vc = [[ViewController alloc]init];
        vc.preferredContentSize = CGSizeMake(0.0f, 600.0f);
        return vc;
    }
    else if (indexPath.row == 1)
    {
        SecondViewController *svc = [[SecondViewController alloc]init];
        svc.preferredContentSize = CGSizeMake(0, 600);
        return svc;
    }
    else
    {
        SearchView *searchVC = [[SearchView alloc]init];
        searchVC.preferredContentSize = CGSizeMake(0, 600);
        return searchVC;
    }
}

-(void)previewingContext:(id<UIViewControllerPreviewing>)previewingContext commitViewController:(UIViewController *)viewControllerToCommit
{
    [self showViewController:viewControllerToCommit sender:self];
}

現(xiàn)在的效果是這樣:

怎么實(shí)現(xiàn)上拉效果呢.是這樣的,比如第二頁(yè)有個(gè)上拉效果,那么我們?cè)诰唧w的頁(yè)面寫(xiě)個(gè)方法就可以了,也就是在SecondViewcontroller.m里面寫(xiě)這個(gè)方法:

-(NSArray<id<UIPreviewActionItem>> *)previewActionItems
{
    UIPreviewAction *action1 = [UIPreviewAction actionWithTitle:@"進(jìn)去" style:UIPreviewActionStyleDefault handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
        SecondViewController *vc = [[SecondViewController alloc]init];
        ViewController *viewcontroller = [[ViewController alloc]init];
        UINavigationController *nav = [[UINavigationController alloc]initWithRootViewController:viewcontroller];
        [UIApplication sharedApplication].keyWindow.rootViewController =  nav;
        [[UIApplication sharedApplication].keyWindow makeKeyAndVisible];
        [nav pushViewController:vc animated:YES];
    }];
    UIPreviewAction *action2 = [UIPreviewAction actionWithTitle:@"取消" style:UIPreviewActionStyleDefault handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
        
    }];
    NSArray *array = @[action1,action2];
    return array;
}

這樣,第一次重壓第二頁(yè)出現(xiàn)綠色小框后再上拉會(huì)出現(xiàn)"進(jìn)去"和"取消"兩個(gè)選項(xiàng).同理,在searchView里面也是這樣,第一頁(yè)沒(méi)有上拉,所以當(dāng)?shù)谝淮沃貕旱谝豁?yè)后上面沒(méi)有上拉的箭頭.大家看看效果圖吧: