如何自动滚动UITableView？

Question

I am trying to do something interesting.

I am pulling some JSON data and populating cells in a UITableView. How can I make the UITableView scroll ever second or so? I want to give the effect that as new data is coming in, the table is scrolling, so it is streaming.

Any ideas?

Answer 1

Yes, use scrollToRowAtIndexPath:atScrollPosition:animated: .

You could also use UIScrollView's scrollRectToVisible:animated: if you want to have more finegrained control and can calculate exactly what your scroll position should be in pixels. (UITableView is subclass of UIScrollView.)

But if you are just adding cells, sounds like you could also just use insertRowsAtIndexPaths:withRowAnimation: , this is also "interesting."

Answer 2

Just do this

[table reloadData];



NSIndexPath *myIP = [NSIndexPath indexPathForRow:[arrayIn count]-1 inSection:0] ;


  [table scrollToRowAtIndexPath:myIP atScrollPosition:NULL animated:YES];

in anywhere where arrayIn is your array by which your table populate.

Answer 3

you can use uitableviews scrollToRowAtIndexPath to do this....heres a link reference

You can call this method whenever as youd like to scroll your tableview

Answer 4

而且，您可以调用performSelector：withObject：afterDelay：来获得计时器效果-尽管如果您确实确实每秒都在提取数据，那么最好随手就去重载Data。