Custom Tableview getting crash in iPhone5(iOS7)

Question

In my app i am using two table one for filter the data and second for results data. I am using the following line to scroll the tableview at selected index position,

self.indexPaths = [NSIndexPath indexPathForRow:0 inSection:indexPath.row];

 [tableview scrollToRowAtIndexPath:self.indexPaths atScrollPosition:UITableViewScrollPositionTop animated:YES];

    [tableview reloadData];

but my app is getting crash in only in iPhone5(iOS7) and working fine in all devices even iPhone5(iOS6).

Why does this crash only on iPhone5(iOS7)?

Crashing log is: Terminating app due to uncaught exception 'NSInvalidArgumentException'

Answer 1

self.indexPaths = [NSIndexPath indexPathForRow:0 inSection:indexPath.row];

the RHS returns the indexpath corresponding to a row and section.

in the above code, you are passing indexpath.row to inSection parameter. This may be wrong.Assume, you have 1 section and 5 rows. when indexpath.row = 4(for eg), there wont be a section corresponding to 4 and hence self.indexPaths becomes nil since the system would try to look for row 4 in section 4, but section 4 doesnt exist!! Consequently, when you pass nil to below line, it says nsinvalidargument exception.

 tableview scrollToRowAtIndexPath:self.indexPaths atScrollPosition:UITableViewScrollPositionTop animated:YES];

Answer 2

You pass integer (0) for index path. You should pass NSIndexPath instead, try:

    NSIndexPath *ip = [NSIndexPath indexPathForRow:0 inSection:0];
    [tableview scrollToRowAtIndexPath:ip atScrollPosition:UITableViewScrollPositionTop animated:NO];

Answer 3

NSIndexPath is an object so you can't pass 0.

Try [NSIndexPath indexPathWithIndex:0]