I have an interesting problem. I have a very basic tableview with a bunch of cells of varying height. It's using the iOS 8 UITableViewAutomaticDimension and auto layout constraints.
@interface ViewController () <UITableViewDataSource>
@property (weak, nonatomic) IBOutlet UITableView *tableView;
@property (strong, nonatomic) NSArray *sentences;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.tableView.estimatedRowHeight = 44;
self.tableView.rowHeight = UITableViewAutomaticDimension;
self.sentences = @[
@"Lorem ipsum dolor sit amet, consectetur adipiscing elit.",
@"Maecenas consectetur libero viverra sem viverra finibus.",
@"Nunc arcu orci, pellentesque vel sapien nec, lobortis pulvinar magna"
];
// and a bunch more, see example project
[self scrollToBottom];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [self.sentences count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
SentenceCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell" forIndexPath:indexPath];
cell.sentence = self.sentences[indexPath.row];
return cell;
}
- (void)scrollToBottom {
NSUInteger index = [self.sentences count] - 1;
NSIndexPath *indexPath = [NSIndexPath indexPathForItem:index inSection:0];
[self.tableView scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionBottom animated:NO];
}
So I want to start scrolled all the way to the bottom, and you have to scroll up to see older stuff. It's for a chat client basically. There are 2 problems: 1, it doesn't actually scroll to the bottom, and 2, when you scroll up, the cells shift position making scrolling jarring and weird. Not smooth at all.
Example project demonstrating the problem: https://github.com/kevinrenskers/AutoHeightFromBottom. Also see https://github.com/smileyborg/TableViewCellWithAutoLayoutiOS8/issues/8.
How do I solve this problem? Manually calculate cell height like in the olden days? Switch to collection view? Would that even solve anything?
