6s和6s plus之后特有效果，對著應用圖標用力按會觸發3DTouch .
第一步 : 3DTouch 設備支持檢測：
檢測當前的設備是否支持3DTouch
// 在iOS9中有一個新的枚舉
typedef NS_ENUM(NSInteger, UIForceTouchCapability) {
UIForceTouchCapabilityUnknown = 0, // 未知的支持屬性
UIForceTouchCapabilityUnavailable = 1, // 不支持
UIForceTouchCapabilityAvailable = 2 // 支持
};
一般我們都在每個ViewController的生命周期中這樣做：
定義一個是否設備支持的BOOL值屬性
@property (nonatomic , assign) BOOL support3DTouch;
在生命周期函數中檢測支持與否
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
//檢測當前是否支持3DTouch
self.support3DTouch = [self support3DTouch];
}
在生命周期外檢測支持與否（因為有可能出了生命周期函數而發生了變化）
- (void)traitCollectionDidChange:(nullable UITraitCollection *)previousTraitCollection NS_AVAILABLE_IOS(8_0) {
self.support3DTouch = [self support3DTouch];
}
檢測是否支持3DTouch的方法
- (BOOL)support3DTouch
{
// 如果開啟了3D touch
if (self.traitCollection.forceTouchCapability == UIForceTouchCapabilityAvailable)
{
return YES;
}
return NO;
}
}
第二步 : 配置快捷視圖列表
創建快捷視圖列表有兩種方法:
1，一種是編輯info.plist文件中的UIApplicationShortcutItems,
通過可視化的界面添加鍵值對直接配置info.plist
2，另一種是使用代碼在工程中加入items
在工程的 AppDelegate.m
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.window.rootViewController = [[UINavigationController alloc] initWithRootViewController:[[HomeViewController alloc] init]];
[self.window makeKeyAndVisible];
// 代碼創建快捷視圖列表的方法，
[self create3DTouchShotItems];
return YES;
}
- (void)create3DTouchShotItems {
//創建快捷item的icon UIApplicationShortcutItemIconFile
UIApplicationShortcutIcon *icon1 = [UIApplicationShortcutIcon iconWithTemplateImageName:@"icon1"];
UIApplicationShortcutIcon *icon2 = [UIApplicationShortcutIcon iconWithTemplateImageName:@"icon2"];
UIApplicationShortcutIcon *icon3 = [UIApplicationShortcutIcon iconWithTemplateImageName:@"icon3"];
//創建快捷item的userinfo UIApplicationShortcutItemUserInfo
NSDictionary *info1 = @{@"url":@"url1"};
NSDictionary *info2 = @{@"url":@"url2"};
NSDictionary *info3 = @{@"url":@"url3"};
//創建ShortcutItem
UIMutableApplicationShortcutItem *item1 = [[UIMutableApplicationShortcutItem alloc]initWithType:@"XS_3DTocuh_1" localizedTitle:@"掃一掃" localizedSubtitle:@"" icon:icon1 userInfo:info1];
UIMutableApplicationShortcutItem *item2 = [[UIMutableApplicationShortcutItem alloc]initWithType:@"XS_3DTocuh_2" localizedTitle:@"smile" localizedSubtitle:@"微笑面對生活" icon:icon2 userInfo:info2];
UIMutableApplicationShortcutItem *item3 = [[UIMutableApplicationShortcutItem alloc]initWithType:@"XS_3DTocuh_3" localizedTitle:@"購物" localizedSubtitle:@"Shopping" icon:icon3 userInfo:info3];
NSArray *items = @[item1, item2, item3];
[UIApplication sharedApplication].shortcutItems = items;
}
第三步 : 給列表視圖中的cell注冊 3DTouch 事件
1，首先，在首頁當前控制器里遵守UIViewControllerPreviewingDelegate協議
UIViewControllerPreviewingDelegate
2，在注冊前先判斷是否設備支持(也就是第一步)
3，注冊: [self registerForPreviewingWithDelegate:self sourceView:cell];
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
ZLTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"ZLTableViewCell"];
if (cell == nil) {
cell = [ZLTableViewCell cellWithTableView:tableView];
}
cell.dataFrame = self.dataSource[indexPath.row];
//給cell注冊代理，使其支持3DTouch手勢
if (self.support3DTouch) {
[self registerForPreviewingWithDelegate:self sourceView:cell];
}
return cell;
}
第四步: 完成UIViewControllerPreviewingDelegate 協議回調，實現Peek Pop
在首頁當前控制器里,
#pragma mark - 3DTouch UIViewControllerPreviewingDelegate
Peek 實現代碼：
// 此方法是輕按控件時，跳出peek的代理方法
- (UIViewController *)previewingContext:(id<UIViewControllerPreviewing>)previewingContext viewControllerForLocation:(CGPoint)location {
//防止重復加入
if ([self.presentedViewController isKindOfClass:[ZLPeekViewController class]])
{
return nil;
}
else
{
ZLTableViewCell *cell = (ZLTableViewCell *)previewingContext.sourceView;
ZLCellData * cellData = cell.dataFrame.cellData;
ZLPeekViewController *peekViewController = [[ZLPeekViewController alloc] init];
peekViewController.cellData = cellData;
peekViewController.delegate = self;
return peekViewController;
}
}
Pop 代碼
//此方法是重按peek時，跳入pop的代理方法
- (void)previewingContext:(id<UIViewControllerPreviewing>)previewingContext
commitViewController:(UIViewController *)viewControllerToCommit {
ZLTableViewCell *cell = (ZLTableViewCell *)previewingContext.sourceView;
ZLCellData * cellData = cell.dataFrame.cellData;
ZLPopViewController *popViewController = [[ZLPopViewController alloc] init];
popViewController.cellData = cellData;
// 以prentViewController的形式展現
[self showViewController:popViewController sender:self];
// 以push的形勢展現
// [self.navigationController pushViewController:popViewController animated:YES];
}
第五步 : 在Peek狀態下向上滑動出現的按鈕配置方法
在 ZLPeekViewController.m 里, 實現 - (NSArray> *)previewActionItems 回調方法
#pragma mark - Preview Actions
- (NSArray<id<UIPreviewActionItem>> *)previewActionItems {
// 生成UIPreviewAction
UIPreviewAction *action1 = [UIPreviewAction actionWithTitle:@"事件 1" style:UIPreviewActionStyleDefault handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
NSLog(@"Action 1 selected");
[self.delegate pushToPopViewControllerWithCellData:self.cellData];
}];
UIPreviewAction *action2 = [UIPreviewAction actionWithTitle:@"事件 2" style:UIPreviewActionStyleDestructive handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
NSLog(@"Action 2 selected");
}];
UIPreviewAction *action3 = [UIPreviewAction actionWithTitle:@"事件 3" style:UIPreviewActionStyleSelected handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
NSLog(@"Action 3 selected");
}];
UIPreviewAction *tap1 = [UIPreviewAction actionWithTitle:@"按鈕 1" style:UIPreviewActionStyleDefault handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
NSLog(@"tap 1 selected");
}];
UIPreviewAction *tap2 = [UIPreviewAction actionWithTitle:@"按鈕 2" style:UIPreviewActionStyleDestructive handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
NSLog(@"tap 2 selected");
}];
UIPreviewAction *tap3 = [UIPreviewAction actionWithTitle:@"按鈕 3" style:UIPreviewActionStyleSelected handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
NSLog(@"tap 3 selected");
}];
NSArray *actions = @[action1, action2, action3];
NSArray *taps = @[tap1, tap2, tap3];
UIPreviewActionGroup *group1 = [UIPreviewActionGroup actionGroupWithTitle:@"一組事件" style:UIPreviewActionStyleDefault actions:actions];
UIPreviewActionGroup *group2 = [UIPreviewActionGroup actionGroupWithTitle:@"一組按鈕" style:UIPreviewActionStyleDefault actions:taps];
NSArray *group = @[group1,group2];
//當然你也可以返回三個單獨的action對象的數組，而不是group，具體效果，可以自己試一下
return group;
}
現在可以測試嘍, 看下效果吧, 如果需要demo可以去我的 GitHub 上下載~
3DTouch.gif
