uitableview

问题 I want to search an dictionary of exercises for the name key and then show the filtered result in the table view. I am using this function func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) { let filtered = exercises.filter { $0["name"] == searchText } print(filtered) if(filtered.count == 0){ searchActive = false; } else { searchActive = true; } self.exercisesTableView.reloadData() } Variables: var exercises = [Exercise]() var filtered: [NSMutableArray] = [] var

问题 I wanted to load data in background thread and update tableview/UI on main thread. Based on what's indicated here about threading, I was wondering if the code below is the way to go about it. I'm trying to load more data as user scrolls to a specific index and wanted to make sure the UI is not freezing due to threading. Thank you! func loadMore () { guard !self.reachedEndOfItems else { return } self.offset = self.offset! + 10 print("load more offset: \(self.offset)") var start = 0 var end = 0

问题 I need to reload the section excluding the header after I do some sort on my tableview data. That's to say I just want to reload all the rows in the section. But I don't find a easy way to make it after I search for a while. reloadSections(sectionIndex, with: .none) not works here, for it will reload the whole section including the header, footer and all the rows. So I need to use reloadRows(at: [IndexPath], with: UITableViewRowAnimation) instead. But how to get the whole indexPaths for the

问题 So I have a tableView where I want to change the height of a cell when tapped. Well, actually, I am replacing it with a bigger cell. On tap, I call: tableView.beginUpdates() tableView.reloadRowsAtIndexPaths([indexPath], withRowAnimation: .Fade) tableView.endUpdate() And then I modify my cellForRowAtIndexPath to return the right new cell and height. The cell's height is being automatically calculated by overriding sizeThatFits in the cell's implementation: override func sizeThatFits(size:

问题 My Core Data model looks like this: article <--->> category Is it even remotely possible to use NSFetchedResultsController to produce a UITableView that looks something like this? Category 1 - Article A - Article B - Article C Category 2 - Article A - Article D - Article E - Article F Category 3 - Article B - Article C Specifically, I'm interested in the (edge?) case where each UITableView section has a unique title (eg, "Category 1", "Category 2"), but the same object can exist in multiple

问题 I have a view that is shown under a navigation controller. The view contains one subview at the top portion and a table view at the bottom. The table might have rows that extend beyond the visible height based on data. When I have rows that are below the last visible row, if I scroll the view up, it bounces back, it does not stay there. Is there a way to make it stay? I tried making the parent view a scroll view and that did not help. My view is from a XIB. 回答1: Sounds like the size of your

问题 I'm using [UITableView registerClass: forReuseIdentifier:] and [UITableView dequeueReusableCellWithIdentifier:] in order to queue and dequeue UITableViewCells. For example, in viewDidLoad: [self.storeTableView registerClass:[StoreLineGraphCell class] forCellReuseIdentifier:@"StoreLineGraphCellIdentifier"]; And in cellForRowAtIndexPath: StoreLineGraphCell *cell = (StoreLineGraphCell*)[self.storeTableView dequeueReusableCellWithIdentifier:@"StoreLineGraphCellIdentifier"]; In doing this, the

问题 I'm using [UITableView registerClass: forReuseIdentifier:] and [UITableView dequeueReusableCellWithIdentifier:] in order to queue and dequeue UITableViewCells. For example, in viewDidLoad: [self.storeTableView registerClass:[StoreLineGraphCell class] forCellReuseIdentifier:@"StoreLineGraphCellIdentifier"]; And in cellForRowAtIndexPath: StoreLineGraphCell *cell = (StoreLineGraphCell*)[self.storeTableView dequeueReusableCellWithIdentifier:@"StoreLineGraphCellIdentifier"]; In doing this, the

问题 I want to expand the cell size after clicking a seeMoreBtn on cell. The label and cells have varying length, but their is a constraint in size of label. When a status is too big, I added a seeMoreBtn, after clicking on see more the remaining text will be shown below, then how to increase the label and cell size. - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath; { NSString *text = [items objectAtIndex:[indexPath row]]; CGSize constraint =