uitableview

问题 The problem is this: I need to be able to get analytics on didSelectRowAtIndexPath throughout a big existing app with lots of tableViews. My first thought of this is doing method swizzling on didSelectRowAtIndexPath: but my app crashes with "unrecognized selector sent to instance" message depending on the stuff is accessed in the original didSelectRowAtIndexPath implementation. Here is how I try to achieve this in a UIViewController category: #import "UIViewController+Swizzle.h"

问题 The problem is this: I need to be able to get analytics on didSelectRowAtIndexPath throughout a big existing app with lots of tableViews. My first thought of this is doing method swizzling on didSelectRowAtIndexPath: but my app crashes with "unrecognized selector sent to instance" message depending on the stuff is accessed in the original didSelectRowAtIndexPath implementation. Here is how I try to achieve this in a UIViewController category: #import "UIViewController+Swizzle.h"

问题 How should I get the document id upon tapping the UItableViewCell? I know the below code do give me the row index, but for a feed post I would like to get the document id for the the particular post everytime I have tried to retrieve the document id through key setup in model file but avail to no good func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) { print("row selected: \(indexPath.row)") performSegue(withIdentifier: "toDetailView", sender: indexPath) } Posts

问题 How should I get the document id upon tapping the UItableViewCell? I know the below code do give me the row index, but for a feed post I would like to get the document id for the the particular post everytime I have tried to retrieve the document id through key setup in model file but avail to no good func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) { print("row selected: \(indexPath.row)") performSegue(withIdentifier: "toDetailView", sender: indexPath) } Posts

问题 I have a UITableView with a search bar as header. I use this function to update my data when the user does a search in the search bar. func updateSearchResults(for searchController: UISearchController) { if let searchText = searchController.searchBar.text { if (searchText.characters.count > 0) { self.filteredResults = []; self.locationManager?.geocodeAddressString(addressString: searchText, completionHandler: { (results, error) in if error == nil && results != nil { self.filteredResults =

问题 Loading images dynamically in async thread or image cache library like SDwebimage. Below code is what I tried and it doesn't repaint after image fetched from network. let mutableAttributedString = NSMutableAttributedString() if let _img = newsItem.img { var attachment = NSTextAttachment() attachment.bounds = CGRectMake(4, 4, expectedWidth, expectedWidth * _img.ratio) dispatch_async(dispatch_get_main_queue(), { () -> Void in attachment.image = UIImage(data: NSData(contentsOfURL: NSURL(string:

问题 Loading images dynamically in async thread or image cache library like SDwebimage. Below code is what I tried and it doesn't repaint after image fetched from network. let mutableAttributedString = NSMutableAttributedString() if let _img = newsItem.img { var attachment = NSTextAttachment() attachment.bounds = CGRectMake(4, 4, expectedWidth, expectedWidth * _img.ratio) dispatch_async(dispatch_get_main_queue(), { () -> Void in attachment.image = UIImage(data: NSData(contentsOfURL: NSURL(string:

问题 Loading images dynamically in async thread or image cache library like SDwebimage. Below code is what I tried and it doesn't repaint after image fetched from network. let mutableAttributedString = NSMutableAttributedString() if let _img = newsItem.img { var attachment = NSTextAttachment() attachment.bounds = CGRectMake(4, 4, expectedWidth, expectedWidth * _img.ratio) dispatch_async(dispatch_get_main_queue(), { () -> Void in attachment.image = UIImage(data: NSData(contentsOfURL: NSURL(string:

问题 I know there are a lot of posts about it, but maybe in newest iOS there are some updates on this... I think all of us had a task to create viewController that has a lot of content at the top, most of them are self-sizing, and at the very bottom it figures out that you need to show some tableView with many items... The first solution that can be done is to use UIScrollView , and don't care about reusableCells at all. The second is to use UITableView 's headerView and adjust its height manually

问题 I know there are a lot of posts about it, but maybe in newest iOS there are some updates on this... I think all of us had a task to create viewController that has a lot of content at the top, most of them are self-sizing, and at the very bottom it figures out that you need to show some tableView with many items... The first solution that can be done is to use UIScrollView , and don't care about reusableCells at all. The second is to use UITableView 's headerView and adjust its height manually