我需要在Objective C中使用Force Touch在UITableViewCell
上启用Peek And Pop
功能。并且还需要在预览视图下方显示一些操作,就像默认邮件应用程序一样。我对iOS不熟悉,请帮助我完成这个任务。
我需要在Objective C中使用Force Touch在UITableViewCell
上启用Peek And Pop
功能。并且还需要在预览视图下方显示一些操作,就像默认邮件应用程序一样。我对iOS不熟悉,请帮助我完成这个任务。
在 TableViewCell 和 CollectionViewCell 上实现 Peek And Pop 效果与行为
1) 你应该将调用者的 ViewController 类指定为 UIViewControllerPreviewingDelegate。
@interface MyTableViewController ()
2) 创建一个属性来存储信息。
@property (nonatomic, strong) id previewingContext;
3) 在ViewDidLoad中调用forceTouchIntialize方法。
- (void)viewDidLoad {
[super viewDidLoad];
[self forceTochIntialize];
}
4)检查是否支持Force Touch
-(void)forceTouchIntialize{
if ([self isForceTouchAvailable]) {
self.previewingContext = [self registerForPreviewingWithDelegate:self sourceView:self.view];
}
}
- (BOOL)isForceTouchAvailable {
BOOL isForceTouchAvailable = NO;
if ([self.traitCollection respondsToSelector:@selector(forceTouchCapability)]) {
isForceTouchAvailable = self.traitCollection.forceTouchCapability == UIForceTouchCapabilityAvailable;
}
return isForceTouchAvailable;
}
5) 指定我们想要预览的视图控制器(用于Peek)
- (UIViewController *)previewingContext:(id<UIViewControllerPreviewing> )previewingContext viewControllerForLocation:(CGPoint)location{
CGPoint cellPostion = [yourTableView convertPoint:location fromView:self.view];
NSIndexPath *path = yourTableView indexPathForRowAtPoint:cellPostion];
if (path) {
UITableViewCell *tableCell = [yourTableView
cellForRowAtIndexPath:path];
//Pushing to a nib File
PushViewController *previewController = [[PushViewController alloc] initWithNibName:@"PushViewController" bundle:nil];
//To Pass data to Preview ViewController
// id temp = [yourDataArray objectAtIndex:path.row];
// PushViewController.anyObject=temp;
previewingContext.sourceRect = [self.view convertRect:tableCell.frame fromView: yourTableView
]; return previewController;
}
return nil;
}
6) 深按 POP(用于 POP)
-(void)previewingContext:(id )previewingContext commitViewController: (UIViewController *)viewControllerToCommit {
[self.navigationController showViewController:viewControllerToCommit sender:nil];
}
7)当控制器达到峰值,您向上滑动时,如果想添加像删除、存档这样的按钮,请将此方法添加到您的previewViewContrller中(在此示例中为“PushViewController”)
- (NSArray<id> *)previewActionItems {
UIPreviewAction *previewAction1 = [UIPreviewAction actionWithTitle:@"delete" style:UIPreviewActionStyleDefault handler:^(UIPreviewAction *action, UIViewController *previewViewController){
}];
UIPreviewAction *previewAction2 = [UIPreviewAction actionWithTitle:@"archive" style:UIPreviewActionStyleDefault handler:^(UIPreviewAction *action, UIViewController *previewViewController){
}];
return @[previewAction1,previewAction2];
}