The searchBar sub views hierarchy has been changed in iOS7, try the below:
iOS7:
NSArray *searchBarSubViews = [[self.searchBar.subviews objectAtIndex:0] subviews];
iOS6 and before:
NSArray *searchBarSubViews = self.searchBar.subviews;
Try below updated function:
NSArray *searchBarSubViews = [[self.searchBar.subviews objectAtIndex:0] subviews];
for(int i =0; i<[searchBarSubViews count]; i++) {
if([[searchBarSubViews objectAtIndex:i] isKindOfClass:[UITextField class]])
{
UITextField* search=(UITextField*)[searchBarSubViews objectAtIndex:i];
[search setFont:[UIFont fontWithName:@"MyCustomFont" size:15]];
search.delegate = self;
[search setInputView:self.customKeyboard];
[self.customKeyboard setTextView:search];
}
}
[self.sBar reloadInputViews];