Animate scrolling to bottom of tableview on button tap?

Question

I'm using the below code to scroll to the bottom of my table view when my "send" button is tapped. That said, the animation seems "choppy" even though I've set animated to YES. E.g. When the button is tapped, my entire table view content clears (goes white), and then reappears at the bottom of my tableview (vs. the smooth scrolling animation I'm looking for?)

ViewController.m

- (IBAction)sendReply:(id)sender {

    [self.tableView setContentOffset:CGPointMake(0, CGFLOAT_MAX) animated:YES];

}

http://stackoverflow.com/questions/26160484/ios-uitableview-scroll-to-bottom-of-section you can find you answer in the above link — Santhosh, Nov 23 '16 at 08:49
Possible duplicate of [iOS UITableView Scroll to bottom of section](http://stackoverflow.com/questions/26160484/ios-uitableview-scroll-to-bottom-of-section) — ThunderStruct, Mar 18 '17 at 17:12

score 2 · Answer 1 · answered Nov 23 '16 at 07:21

2

Call this scrollTableToBottom method in your button action

the condition is used to check any row is there or not. you may ignore that and handle accordingly

- (void)scrollTableToBottom {
    NSInteger rowNumber = [self. tableView numberOfRowsInSection:0];
    if (rowNumber > 0) {
        [self. tableView scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:rowNumber-1 inSection:0] atScrollPosition:UITableViewScrollPositionBottom animated:NO];
    }
}

let me know if you have any question.

Happy coding.

answered Nov 23 '16 at 07:21

Sailendra

1,318
14
29

Still no smooth animation :/ – Blair Warner Nov 23 '16 at 07:30
make animated:YES and see, I have written it NO in code – Sailendra Nov 23 '16 at 07:31
Strangely enough, now it just stopped scrolling all together. – Blair Warner Nov 23 '16 at 07:36
@Brittany, is there any key board displaying when you clicked the send button? – Sailendra Nov 23 '16 at 07:40
Tried it with keyboard visible and without it visible - no animation either way. – Blair Warner Nov 23 '16 at 07:41

score 1 · Answer 2 · answered Nov 23 '16 at 07:20

I think you can use default animation of tableview itself

    int lastRowNumber = [tableView numberOfRowsInSection:0] - 1;
    NSIndexPath* ip = [NSIndexPath indexPathForRow:lastRowNumber inSection:0];
    if (ip  > 0) {

    [tableView scrollToRowAtIndexPath:ip atScrollPosition:UITableViewScrollPositionTop animated:YES];
}

score 1 · Answer 3 · answered Nov 23 '16 at 07:20

1

find your Last indexPath and Try this

 [self.tableView scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionBottom animated:true];

hope this will work

answered Nov 23 '16 at 07:20

jignesh Vadadoriya

3,244
3
18
29

score 0 · Answer 4 · answered Nov 23 '16 at 07:21

0

- (void) viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
    if (messagesTableView.contentSize.height > messagesTableView.frame.size.height) 
    {
        CGPoint offset = CGPointMake(0, messagesTableView.contentSize.height -     messagesTableView.frame.size.height);
        [self.messagesTableView setContentOffset:offset animated:YES];
    }
}

check this and let me know

answered Nov 23 '16 at 07:21

Purushothaman

358
4
22

Still no animated movement :/ – Blair Warner Nov 23 '16 at 07:34

Animate scrolling to bottom of tableview on button tap?

4 Answers4