iOS custom alert

iOS custom alert 

-(void) customAlertForValidation: (NSString *) message

{

    UIView *viewAlert = [[UIView alloc] initWithFrame:CGRectMake(0, screenHeight-145, screenWidth, 50)];

    viewAlert.backgroundColor = [delegate navHeaderColor];

    [self.view addSubview:viewAlert];

    

    UILabel *lblMessage = [[UILabel alloc] initWithFrame:CGRectMake(10, 0, screenWidth-20, 50)];

    lblMessage.textColor = [UIColor whiteColor];

    lblMessage.numberOfLines = 2;

    lblMessage.text = message;

    lblMessage.font = [UIFont fontWithName:fontName size:fontTextField];

    lblMessage.textAlignment = NSTextAlignmentCenter;

    [viewAlert addSubview:lblMessage];

    [UIView animateWithDuration:3.0

                     animations:^{viewAlert.alpha = 0.0;}

                     completion:^(BOOL finished){ [viewAlert removeFromSuperview]; }];

}