How to use UITextView in UIAlertController

Question

I created a popup alert using alert controller and added two alert actions(ok and cancel) as below.

UIAlertController * alert=   [UIAlertController
                  


        

Answer 1

With the above solutions my textview was not positioned correctly. This is how I got it to work:

   // The \n is required so that the alertcontroller keeps space for the message. Add as many \n as you like your textview height to be
   self.alertController = [UIAlertController alertControllerWithTitle:@"Some title"
                                                              message:@"\n\n\n\n\n\n\n\n"
                                                        preferredStyle:UIAlertControllerStyleAlert];

   self.alertController.view.autoresizesSubviews = YES;
   UITextView *textView = [[UITextView alloc] initWithFrame:CGRectZero];
   textView.translatesAutoresizingMaskIntoConstraints = NO;
   textView.editable = NO;
   textView.dataDetectorTypes = UIDataDetectorTypeAll;
   textView.text = @"Some really long text here";
   textView.userInteractionEnabled = YES;
   textView.backgroundColor = [UIColor clearColor];
   // This will make the scroll view scrollable if the text is too long
   textView.scrollEnabled = YES;
   NSLayoutConstraint *leadConstraint = [NSLayoutConstraint constraintWithItem:self.alertController.view attribute:NSLayoutAttributeLeading relatedBy:NSLayoutRelationEqual toItem:textView attribute:NSLayoutAttributeLeading multiplier:1.0 constant:-8.0];
       NSLayoutConstraint *trailConstraint = [NSLayoutConstraint constraintWithItem:self.alertController.view attribute:NSLayoutAttributeTrailing relatedBy:NSLayoutRelationEqual toItem:textView attribute:NSLayoutAttributeTrailing multiplier:1.0 constant:8.0];

   NSLayoutConstraint *topConstraint = [NSLayoutConstraint constraintWithItem:self.alertController.view attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:textView attribute:NSLayoutAttributeTop multiplier:1.0 constant:-64.0];
   NSLayoutConstraint *bottomConstraint = [NSLayoutConstraint constraintWithItem:self.alertController.view attribute:NSLayoutAttributeBottom relatedBy:NSLayoutRelationEqual toItem:textView attribute:NSLayoutAttributeBottom multiplier:1.0 constant:64.0];
   [self.retailerHelpAlertController.view addSubview:textView];
   [NSLayoutConstraint activateConstraints:@[leadConstraint, trailConstraint, topConstraint, bottomConstraint]];