1 3D Touch 的三大模块
在我们的app中使用3D Touch功能，主要分一下三个模块:
1.1 Home Screen Quick Actions
通过主屏幕的应用Icon，我们可以用3D Touch 呼出一个菜单，进行快速定位应用功能模块相关功能的开发。
maps_directions_home_2x.png
1.2 Peek and Pop
这个功能是一套全新的用户交互机制，在使用 3D Touch时， 会有如下三个交互阶段:
(1) 轻按，提示用户这里有3D Touch 的交互，会使交互空间周围模糊
preview_available_2_2x.png
(2) 继续深按，会出现预览视图
peek_2x.png
（3） 向上滑动预览视图通过视图上的交互控件进行进一步交互
peek_quick_actions_2x.png
这个模块的设计可以在网址链接上进行网页的预览交互。
1.3 Force Properties
iOS9 为我们提供了新的交互参数:force 和 maximumPossibleForce 。
2 Home Screen Quick Actions 功能
应用最多有4个快捷选项标签，有两种方式开发 Home Screen Quick Actions 功能。
2.1 静态标签
打开项目的plist文件，添加如下项
静态标签.png
选项介绍
UIApplicationShortcutItems : 数组中的元素就是我们的那些快捷选项标签.
UIApplicationShortcutItemType : 标签的唯一 标示（必填）
UIApplicationShortcutItemTitle : 标签的标题（必填）
UIApplicationShortcutItemSubtitle : 标签的副标题 （选填）
UIApplicationShortcutItemIconType : 标签的Icon类型 （选填）
UIApplicationShortcutItemIconFile : 标签的Icon 文件,图标格式35x35像素单色 (选填)
UIApplicationShortcutItemUserInfo: 字典信息，传值使用(选填)
2.2 动态标签
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
self.window = [[UIWindow alloc] init];
ViewController *mainView = [[ViewController alloc] init];
UINavigationController *mainNav = [[UINavigationController alloc] initWithRootViewController:mainView];
self.window.rootViewController = mainNav;
[self.window makeKeyAndVisible];
//动态创建应用图标上的3D touch快捷选项
[self creatShortcutItem];
UIApplicationShortcutItem *shortcutItem = [launchOptions valueForKey:UIApplicationLaunchOptionsShortcutItemKey];
//如果是从快捷选项标签启动app，则根据不同标识执行不同操作，然后返回NO，防止调用- (void)application:(UIApplication *)application performActionForShortcutItem:(UIApplicationShortcutItem *)shortcutItem completionHandler:(void (^)(BOOL))completionHandler
if (shortcutItem) {
//判断先前我们设置的快捷选项标签唯一标识，根据不同标识执行不同操作
if([shortcutItem.type isEqualToString:@"com.dimi.diandi86.main"]){
DimiViewController *dimiVC = [[DimiViewController alloc] init];
[self.window.rootViewController presentViewController:dimiVC animated:YES completion:^{
}];
} else if ([shortcutItem.type isEqualToString:@"com.dimi.diandi86.home"]) {
DimiViewController *dimiVC = [[DimiViewController alloc] init];
[self.window.rootViewController presentViewController:dimiVC animated:YES completion:^{
}];
} else if ([shortcutItem.type isEqualToString:@"com.dimi.diandi86.wonderful"]) {
DimiViewController *dimiVC = [[DimiViewController alloc] init];
[self.window.rootViewController presentViewController:dimiVC animated:YES completion:^{
}];
}
return NO;
}
return YES;
}
- (void)creatShortcutItem
{
//创建系统风格的icon
UIApplicationShortcutIcon *icon = [UIApplicationShortcutIcon iconWithType:UIApplicationShortcutIconTypeShare];
// //创建自定义图标的icon,图标格式35x35像素单色
//UIApplicationShortcutIcon *icon = [UIApplicationShortcutIcon iconWithTemplateImageName:@"Wonderful.png"];
//创建快捷选项
UIApplicationShortcutItem * item = [[UIApplicationShortcutItem alloc] initWithType:@"com.dimi.diandi86.wonderful" localizedTitle:@"精彩" localizedSubtitle:nil icon:icon userInfo:nil];
//添加到快捷选项数组
[UIApplication sharedApplication].shortcutItems = @[item];
}
效果图如下:
3D Touch 快捷标签.png
2.3 点击快捷选项标签进入应用的响应
//如果app在后台，通过快捷选项标签进入app，则调用该方法，如果app不在后台已杀死，则处理通过快捷选项标签进入app的逻辑在- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions中
- (void)application:(UIApplication *)application performActionForShortcutItem:(UIApplicationShortcutItem *)shortcutItem completionHandler:(void(^)(BOOL succeeded))completionHandler
{
//判断先前我们设置的快捷选项标签唯一标识，根据不同标识执行不同操作
if (shortcutItem) {
//判断先前我们设置的快捷选项标签唯一标识，根据不同标识执行不同操作
if([shortcutItem.type isEqualToString:@"com.dimi.diandi86.main"]){
DimiViewController *dimiVC = [[DimiViewController alloc] init];
[self.window.rootViewController presentViewController:dimiVC animated:YES completion:^{
}];
} else if ([shortcutItem.type isEqualToString:@"com.dimi.diandi86.home"]) {
DimiViewController *dimiVC = [[DimiViewController alloc] init];
[self.window.rootViewController presentViewController:dimiVC animated:YES completion:^{
}];
} else if ([shortcutItem.type isEqualToString:@"com.dimi.diandi86.wonderful"]) {
DimiViewController *dimiVC = [[DimiViewController alloc] init];
[self.window.rootViewController presentViewController:dimiVC animated:YES completion:^{
}];
}
}
if (completionHandler) {
completionHandler(YES);
}
}
效果图如下
点击快捷标签选项的响应.png
3 Peek and Pop 功能
应用启动之后界面如下
3D Touch主界面.png
3.1 让ViewController 遵守UIViewControllerPreviewingDelegate协议
@interface ViewController ()<UITableViewDataSource, UITableViewDelegate, UIViewControllerPreviewingDelegate>
@property (nonatomic, strong) UITableView *mainTableView;
@property (nonatomic, strong) NSMutableArray *dataArray;
@end
3.2 给 cell 注册 3D Touch 的 Peek and Pop 功能
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *identifier = @"cellIdentifier";
UITableViewCell * cell = nil;
cell = [tableView dequeueReusableCellWithIdentifier:identifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier];
}
cell.textLabel.text = [self.dataArray objectAtIndex:indexPath.row];
if (self.traitCollection.forceTouchCapability == UIForceTouchCapabilityAvailable) {
NSLog(@"3D Touch 可用!");
//给cell注册3DTouch的peek（预览）和pop功能
[self registerForPreviewingWithDelegate:self sourceView:cell];
} else {
NSLog(@"3D Touch 无效");
}
return cell;
}
3.3 实现 UIViewControllerPreviewingDelegate 方法
#pragma mark - UIViewControllerPreviewingDelegate method
//peek(预览模式)
- (nullable UIViewController *)previewingContext:(id <UIViewControllerPreviewing>)previewingContext viewControllerForLocation:(CGPoint)location
{
//获取按压的cell所在行，[previewingContext sourceView]就是按压的那个视图
NSIndexPath *indexPath = [self.mainTableView indexPathForCell:(UITableViewCell* )[previewingContext sourceView]];
//设定预览的界面
DimiViewController *childVC = [[DimiViewController alloc] init];
childVC.preferredContentSize = CGSizeMake(0.0f,500.0f);
//调整不被虚化的范围，按压的那个cell不被虚化（轻轻按压时周边会被虚化，再少用力展示预览，再加力跳页至设定界面）
CGRect rect = CGRectMake(0, 0, self.view.frame.size.width,40);
previewingContext.sourceRect = rect;
//返回预览界面
return childVC;
}
//pop（继续按压进入）
- (void)previewingContext:(id <UIViewControllerPreviewing>)previewingContext commitViewController:(UIViewController *)viewControllerToCommit
{
DimiViewController *childVC = [[DimiViewController alloc] init];
[self.navigationController pushViewController:childVC animated:YES];
}
预览界面效果图如下
预览界面效果图.png
3.4 预览界面向上滑动交互实现，在DimiViewController 中实现previewActionItems方法
- (NSArray<id<UIPreviewActionItem>> *)previewActionItems
{
// setup a list of preview actions
UIPreviewAction *action1 = [UIPreviewAction actionWithTitle:@"Aciton1" style:UIPreviewActionStyleDefault handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
NSLog(@"Aciton1");
}];
UIPreviewAction *action2 = [UIPreviewAction actionWithTitle:@"Aciton2" style:UIPreviewActionStyleDefault handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
NSLog(@"Aciton2");
}];
NSArray *actions = @[action1,action2];
return actions;
}
效果图如下
预览交互效果图.png
4 Force Properties 的运用
-(void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
NSArray *arrayTouch = [touches allObjects];
UITouch *touch = (UITouch *)[arrayTouch lastObject];
//通过tag确定按压的是哪个view，注意：如果按压的是label，将label的userInteractionEnabled属性设置为YES
if (touch.view.tag == 520) {
self.touchTipValueLabel.text = [NSString stringWithFormat:@"压力值:%f",touch.force];
}
}
#pragma mark - getter and setter
- (UILabel*)touchLabel
{
if (_touchLabel == nil) {
_touchLabel = [[UILabel alloc] init];
_touchLabel.font = [UIFont systemFontOfSize:25];
_touchLabel.text = @"按下我";
_touchLabel.userInteractionEnabled = YES;
_touchLabel.textAlignment = NSTextAlignmentCenter;
_touchLabel.tag = 520;
}
return _touchLabel;
}
- (UILabel*)touchTipValueLabel
{
if (_touchTipValueLabel == nil) {
_touchTipValueLabel = [[UILabel alloc] init];
_touchTipValueLabel.font = [UIFont systemFontOfSize:25];
_touchTipValueLabel.text = @"压力值:";
_touchTipValueLabel.textAlignment = NSTextAlignmentCenter;
}
return _touchTipValueLabel;
}
效果图如下
压力值的运用.png
3D Touch 学习就到此结束啦...
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