Showing alert with iOS7, iOS8 both

Question

As UIAlertController is used for showing alert in iOS8.my app should be compatible with ios6, ios7 too.I think ios6,7 are still using UIAlertView for showing alert. I want to show alert after checking for ios6,7,8 by different ways like for ios7 using UIAlertView and for ios8 using UIAlertController.I need objectiv-c code.

Please Help!!

Thanks in advance!!

Answer 1

Check if the class is available

if ([UIAlertController class]){
    // ios 8 or higher
    UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"Alert title" message:@"Alert message" preferredStyle:UIAlertControllerStyleAlert];

    UIAlertAction* ok = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:nil];
    [alertController addAction:ok];

    [self presentViewController:alertController animated:YES completion:nil];

} else {
    // ios 7 or lower
    UIAlertView * alert = [[UIAlertView alloc]initWithTitle:@"Alert title" message:@"Alert message" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];

    [alert show];

}