iOS 7.1 crash if heightForRowAtIndexPath is not declared

问题

I was trying to use estimatedHeightForRowAtIndexPath for dynamic cell height with AutoLayout and working as expected in iOS8 but crush in iOS7.1 by saying this:

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[MyProject.ViewController tableView:heightForRowAtIndexPath:]: unrecognized selector sent to instance 0x79e91350'

If I define heightForRowAtIndexPath, error go away but cell won't auto size itself. Any idea?

Update: It's indeed available in iOS 7.0, right?

回答1:

try :

 if (NSFoundationVersionNumber > NSFoundationVersionNumber_iOS_7_1 ){
    self.tableView.rowHeight =  UITableViewAutomaticDimension;
    self.tableView.estimatedRowHeight = 206;
}




 func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {



        if NSFoundationVersionNumber > NSFoundationVersionNumber_iOS_7_1 {              
return UITableViewAutomaticDimension
            } else {return 206}
    }

来源：https://stackoverflow.com/questions/28958707/ios-7-1-crash-if-heightforrowatindexpath-is-not-declared