3DTouch目前在手機(jī)上有兩種體現(xiàn)方式，一種是用力按下app的圖片icon，會彈出選項(xiàng)菜單，就像電腦上的右鍵。一種是在應(yīng)用內(nèi)的界面上用力按下，彈出的預(yù)覽界面。
一、iocn按下效果
這里有兩種方式實(shí)現(xiàn)：
1、通過plist文件靜態(tài)設(shè)置
UIApplicationShortcutItemUserInfo信息
UIApplicationShortcutItemIconFile圖標(biāo)名稱
UIApplicationShortcutItemIconType圖標(biāo)類型
UIApplicationShortcutItemTitle標(biāo)題
UIApplicationShortcutItemSubTitle副標(biāo)題
然后在AppDelegate里面實(shí)現(xiàn)代理方法，通過綁定的標(biāo)簽type來實(shí)現(xiàn)具體代碼。
-(void)application:(UIApplication*)applicationperformActionForShortcutItem:(UIApplicationShortcutItem*)shortcutItemcompletionHandler:(void(^)(BOOL))completionHandler{
UINavigationController*nav?=?(UINavigationController*)self.window.rootViewController;
if([shortcutItem.typeisEqualToString:@"ONE"]){
UIViewController*vc?=?[[UIViewControlleralloc]init];
vc.title=@"第一個(gè)";
vc.view.backgroundColor=?[UIColorredColor];
[navpushViewController:vcanimated:YES];
}elseif([shortcutItem.typeisEqualToString:@"TWO"]){
UIViewController*vc?=?[[UIViewControlleralloc]init];
vc.title=@"第二個(gè)";
vc.view.backgroundColor=?[UIColorgreenColor];
[navpushViewController:vcanimated:YES];
}
}
2、通過代碼動態(tài)創(chuàng)建
首先在AppDelegate的didFinishLaunchingWithOptions里面初始化
- (BOOL)application:(UIApplication*)applicationdidFinishLaunchingWithOptions:(NSDictionary*)launchOptions {
[selfsetup3DTouch:application];
returnYES;
}
- (void)setup3DTouch:(UIApplication*)application{
/**
type 該item 唯一標(biāo)識符
localizedTitle ：標(biāo)題
localizedSubtitle：副標(biāo)題
icon：icon圖標(biāo) 可以使用系統(tǒng)類型 也可以使用自定義的圖片
userInfo：用戶信息字典 自定義參數(shù)，完成具體功能需求
*/
//? ? UIApplicationShortcutIcon *icon1 = [UIApplicationShortcutIcon iconWithTemplateImageName:@"標(biāo)簽.png"];
UIApplicationShortcutIcon *cameraIcon = [UIApplicationShortcutIcon iconWithType:UIApplicationShortcutIconTypeCompose];
UIApplicationShortcutItem *cameraItem = [[UIApplicationShortcutItem alloc]initWithType:@"ONE" localizedTitle:@"拍照" localizedSubtitle:@"" icon:cameraIcon userInfo:nil];
UIApplicationShortcutIcon *shareIcon = [UIApplicationShortcutIcon iconWithType:UIApplicationShortcutIconTypeShare];
UIApplicationShortcutItem *shareItem = [[UIApplicationShortcutItem alloc] initWithType:@"TWO" localizedTitle:@"分享" localizedSubtitle:@"" icon:shareIcon userInfo:nil];
/** 將items 添加到app圖標(biāo) */
application.shortcutItems = @[cameraItem,shareItem];
}
//最后在代理方法里面實(shí)現(xiàn)具體需求代碼
-(void)application:(UIApplication *)application performActionForShortcutItem:(UIApplicationShortcutItem *)shortcutItem completionHandler:(void (^)(BOOL))completionHandler{
if([shortcutItem.type isEqualToString:@"ONE"]){
NSLog(@"第一個(gè)");
}else if ([shortcutItem.type isEqualToString:@"TWO"]){
NSLog(@"第二個(gè)");
}
}
二、應(yīng)用內(nèi)UI界面用力按下產(chǎn)生的3DTouch效果（這種方式也有兩種實(shí)現(xiàn)效果）
比如用力按下某個(gè)cell，彈出預(yù)覽的小視圖，同時(shí)上滑底部出現(xiàn)若干個(gè)選項(xiàng)（Peek功能）。
首先注冊需要實(shí)現(xiàn)Touch效果的View，判斷下設(shè)備系統(tǒng)支不支持，不然會崩潰
- (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];
}
cell.selectionStyle = UITableViewCellSelectionStyleNone;
cell.textLabel.text = self.dataArray[indexPath.row];
if ([self respondsToSelector:@selector(traitCollection)]) {
if ([self.traitCollection respondsToSelector:@selector(forceTouchCapability)]) {
if (self.traitCollection.forceTouchCapability == UIForceTouchCapabilityAvailable) {
[self registerForPreviewingWithDelegate:self sourceView:cell];
}}}
return cell;
}
把當(dāng)前的cell注冊綁定，然后試圖界面實(shí)現(xiàn)UIViewControllerPreviewingDelegate代理
#pragma mark - UIViewControllerPreviewingDelegate
//Peek代理方法
//1、彈出預(yù)覽效果
-(UIViewController *)previewingContext:(id)previewingContext viewControllerForLocation:(CGPoint)location{? ?
NSIndexPath *index = [self.tableView indexPathForCell:(UITableViewCell *)[previewingContext sourceView]];? ?
NSString *title = self.dataArray[index.row];? ? ? ?
Touch3DShowViewController *showVC = [[Touch3DShowViewController alloc]init];? ?
showVC.string = title;? ?
CGRect rect = CGRectMake(0, 0,? previewingContext.sourceView.frame.size.width, previewingContext.sourceView.frame.size.height);? ?
previewingContext.sourceRect = rect;? ? ? ?
return showVC;
}
//pop代理方法
//2、在第1個(gè)效果的基礎(chǔ)上，再繼續(xù)用力按下去，就會push預(yù)覽界面了。（pop功能）-(void)previewingContext:(id)previewingContext commitViewController:(UIViewController *)viewControllerToCommit{
[self showViewController:viewControllerToCommit sender:self];
}
如果實(shí)現(xiàn)下面有幾個(gè)選項(xiàng)的功能，需要在你預(yù)覽界面里面（彈出的那個(gè)界面）實(shí)現(xiàn)一個(gè)方法，
- (NSArray> *)previewActionItems{
UIPreviewAction *action0 = [UIPreviewAction actionWithTitle:@"0普通的按鈕" style:UIPreviewActionStyleDefault handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
//添加點(diǎn)擊處理操作
}];
UIPreviewAction *action1 = [UIPreviewAction actionWithTitle:@"1取消" style:UIPreviewActionStyleDestructive handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
}];
UIPreviewAction *action2 = [UIPreviewAction actionWithTitle:@"2選中" style:UIPreviewActionStyleSelected handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
}];
UIPreviewAction *action3 = [UIPreviewAction actionWithTitle:@"3選中" style:UIPreviewActionStyleSelected handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {?????????????
}];
return? @[action0, action1, action2, action3];
//? ? //該按鈕可以是一個(gè)組,點(diǎn)擊該組時(shí),跳到組里面的按鈕.
//? ? UIPreviewActionGroup *actionGroup = [UIPreviewActionGroup actionGroupWithTitle:@"按鈕數(shù)組/剩下的按鈕" style:UIPreviewActionStyleDefault actions:@[action2, action3]];
//直接返回?cái)?shù)組.
//? ? return? @[action0,action1,actionGroup];
}
如果在別的控件上添加3DTouch，則需要在此控件上注冊，剩下的不變。栗子??：button添加3DTouch：
UIButton *buton = [UIButton buttonWithType:UIButtonTypeCustom];
buton.frame = CGRectMake(50, 50, 200, 30);
buton.backgroundColor = [UIColor redColor];
[buton setTitle:@"3DTouch測試" forState:UIControlStateNormal];
[buton addTarget:self action:@selector(addTimerView) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:buton];
if ([self respondsToSelector:@selector(traitCollection)]) {
if ([self.traitCollection respondsToSelector:@selector(forceTouchCapability)]) {
if (self.traitCollection.forceTouchCapability == UIForceTouchCapabilityAvailable) {
[self registerForPreviewingWithDelegate:self sourceView:buton];
}}}
bug記錄：
如果cell是多樣式的，有的cell需要3DTouch，有的不需要，此時(shí)注冊綁定cell會出現(xiàn)問題。解決方法是：在當(dāng)前的ViewController里定義一個(gè)全局的字典，key是cell，value是context，每次先判斷這個(gè)cell有沒有添加過，有的話取消，然后在判斷需不需要添加。因?yàn)槿∠臅r(shí)候不是傳的cell，需要傳id<UIViewControllerPreviewing>這個(gè)，就是注冊時(shí)候的返回值，所以要用字典把cell和id<UIViewControllerPreviewing>這個(gè)綁定起來。
