I have a tableView with many values.
I want to get the first indexPath.row
value of the table which is being displayed currently.
How can I do
You can use: [self.tableView visibleCells]
That will return a nsarray of UITableViewCell objects, each representing a visible cell in the receiving table view.
http://developer.apple.com/library/ios/#DOCUMENTATION/UIKit/Reference/UITableView_Class/Reference/Reference.html
Get exact index number at center currently being displayed:
let middleIndex = ((tableView.indexPathsForVisibleRows?.first?.row)! + (tableView.indexPathsForVisibleRows?.last?.row)!)/2
Example:
func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
let middleIndex = ((tableView.indexPathsForVisibleRows?.first?.row)! + (tableView.indexPathsForVisibleRows?.last?.row)!)/2
print(middleIndex)
}
[self.myTableView visibleCells];
NSArray *anArrayOfIndexPath = [NSArray arrayWithArray:[self.myTableView indexPathsForVisibleRows]];
NSIndexPath *indexPath= [anArrayOfIndexPath lastObject];
Hope this will help you.
You can use tableView indexPathsForVisibleRows function, which returns an NSArray
of NSIndexPath
for all visible UITableViewCell
. From indexPath.row
you can find your array index.
NSArray *visible = [tableView indexPathsForVisibleRows];
NSIndexPath *indexpath = (NSIndexPath*)[visible objectAtIndex:0];
indexPath.row
will give you index of first object displayed.
you can use indexPathsForVisibleRows
Returns an array of index paths each identifying a visible row in the receiver.
- (NSArray *)indexPathsForVisibleRows
Return Value
An array of NSIndexPath objects each representing a row index and section index that together identify a visible row in the table view. Returns nil if no rows are visible.