iOS- 指压即达，如何集成iOS9里的3D Touch
原文连接
作者： 清澈Saup
出处： http://www.cnblogs.com/qingche/
1.前言
随着6S的到来，3DTouch被各大热门APP迅速普及，博主亲自体验后，发现使用便捷性大幅提高，随后自己照着文档，写了个Demo出来，分享给大家，希望能对有需要的朋友提供有一些帮助。
2.如何使用3D Touch？
2.1.主界面重按APP图标，弹出Touch菜单
在AppleDelegate文件中的程序入口处配置：
didFinishLaunchingWithOptions
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//给App图标添加3D Touch菜单
//拍照
//菜单图标
UIApplicationShortcutIcon *iconCamera = [UIApplicationShortcutIcon iconWithType:UIApplicationShortcutIconTypeAdd];
//菜单文字
UIMutableApplicationShortcutItem *itemCamera = [[UIMutableApplicationShortcutItem alloc] initWithType:
@"1"
localizedTitle:
@"拍照"
];
//绑定信息到指定菜单
itemCamera.icon = iconCamera;
//相册
//菜单图标
UIApplicationShortcutIcon *iconPhotoLibrary = [UIApplicationShortcutIcon iconWithType:UIApplicationShortcutIconTypeSearch];
//菜单文字
UIMutableApplicationShortcutItem *itemPhotoLibrary = [[UIMutableApplicationShortcutItem alloc] initWithType:
@"2"
localizedTitle:
@"相册"
];
//绑定信息到指定菜单
itemPhotoLibrary.icon = iconPhotoLibrary;
//绑定到App icon
application.shortcutItems = @[itemCamera,itemPhotoLibrary];
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弹出菜单，我们需要让用户点击后跳转指定页面
这里我们会用到AppDelegate里新增加的一个方法
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- (
void
)application:(UIApplication *)application performActionForShortcutItem:(nonnull UIApplicationShortcutItem *)shortcutItem completionHandler:(nonnull
void
(^)(BOOL))completionHandler;
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让后我们需要在这个方法里做跳转的操作
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//照相type
if
([shortcutItem.type isEqualToString:
@"1"
]) {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
//初始化
picker.allowsEditing = YES;
//设置可编辑
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
[self.window.rootViewController presentViewController:picker animated:YES completion:nil];
//进入照相界面
}
//相册type
if
([shortcutItem.type isEqualToString:
@"2"
]) {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
//初始化
picker.allowsEditing = YES;
//设置可编辑
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[self.window.rootViewController presentViewController:picker animated:YES completion:nil];
//进入图片库
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点击后分别会进入相机和相册
2.2. 3DTouch轻按预览功能，预览时底部菜单的添加
首先我们要把轻按预览和长按手势区分开来，这里要在初始化时做一个基本的检测。
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nterface ViewController () <UIViewControllerPreviewingDelegate>
{
UILongPressGestureRecognizer *_longPress;
}
@end
@implementation ViewController
- (
void
)viewDidLoad {
[super viewDidLoad];
UILongPressGestureRecognizer *longPressGr = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressToDo)];
_longPress = longPressGr;
}
//检测页面是否处于3DTouch
- (
void
)check3DTouch{
if
(self.traitCollection.forceTouchCapability == UIForceTouchCapabilityAvailable) {
[self registerForPreviewingWithDelegate:self sourceView:self.view];
NSLog(
@"3D Touch 开启"
);
//长按停止
_longPress.enabled = NO;
}
else
{
_longPress.enabled = YES;
}
}
- (
void
)viewWillAppear:(BOOL)animated{
[self check3DTouch];
}
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然后我们需要实现 UIViewControllerPreviewingDelegate的协议
然后我们需要实现 UIViewControllerPreviewingDelegate的协议
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@
interface
ViewController () <UIViewControllerPreviewingDelegate>
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//然后实现代理方法
- (UIViewController *)previewingContext:(id<UIViewControllerPreviewing>)previewingContext viewControllerForLocation:(CGPoint)location;
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#pragma mark >> 3D touch 代理方法
//轻按进入浮动预览页面
- (UIViewController *)previewingContext:(id<UIViewControllerPreviewing>)previewingContext viewControllerForLocation:(CGPoint)location{
//注意这里我因为测试，没做具体的位置处理，如果需要定位到具体的图片Cell位置的话，可以用location通过tableView的convertPoint来取到指定Cell
ASPreviewViewController *vc = [[ASPreviewViewController alloc] init];
vc.view.frame = self.view.frame;
UIImageView *er = [[UIImageView alloc] initWithImage:[UIImage imageNamed:
@"123.png"
]];
vc.view = er;
return
vc;
}
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完成后可以实现基本的预览效果:
最后我们加上一个
预览时下滑底部菜单的添加
在我们刚刚创建的预览控制器ASPreviewViewController里实现 UIViewControllerPreviewingDelegate的协议
然后重写它的代理方法
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- (NSArray<id<UIPreviewActionItem>> *)previewActionItems;
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//预览页面 底部Action Items
- (NSArray<id<UIPreviewActionItem>> *)previewActionItems{
UIPreviewAction *p1 =[UIPreviewAction actionWithTitle:
@"分享"
style:UIPreviewActionStyleDefault handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
NSLog(
@"点击了分享"
);
}];
UIPreviewAction *p2 =[UIPreviewAction actionWithTitle:
@"收藏"
style:UIPreviewActionStyleDefault handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
NSLog(
@"点击了收藏"
);
}];
NSArray *actions = @[p1,p2];
return
actions;
}
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