Adding a simple UIAlertView

Question

What is some starter code I could use to make a simple UIAlertView with one  OK  button on it

User · Answer

Here is a complete method that only has one button  an  ok   to close the UIAlert   -  void  myAlert   NSString  errorMessage       UIAlertView  myAlert     UIAlertView alloc                            initWithTitle errorMessage                           message                               delegate self                           cancelButtonTitle nil                           otherButtonTitles   ok   nil       myAlert cancelButtonIndex   -1       myAlert setTag 1000        myAlert show

User · Answer

UIAlertView is deprecated on iOS 8  Therefore  to create an alert on iOS 8 and above  it is recommended to use UIAlertController   UIAlertController  alert    UIAlertController alertControllerWithTitle   Title  message   Alert Message  preferredStyle UIAlertControllerStyleAlert   UIAlertAction  defaultAction    UIAlertAction actionWithTitle   Ok  style UIAlertActionStyleDefault handler   UIAlertAction  action           Enter code here      alert addAction defaultAction       Present action where needed  self presentViewController alert animated YES completion nil     This is how I have implemented it

User · Answer

When you want the alert to show  do this       UIAlertView  alert     UIAlertView alloc  initWithTitle   ROFL                                                       message   Dee dee doo doo                                                        delegate self                                                      cancelButtonTitle   OK                                                       otherButtonTitles nil    alert show           If you re not using ARC  you will need to release the alert view          alert release     If you want to do something when the button is clicked  implement this delegate method   -  void alertView  UIAlertView   alertView didDismissWithButtonIndex  NSInteger buttonIndex          the user clicked OK     if  buttonIndex    0               do something here              And make sure your delegate conforms to UIAlertViewDelegate protocol    interface YourViewController   UIViewController  lt UIAlertViewDelegate gt

User · Answer

This page shows how to add an UIAlertController if you are using Swift

User · Answer

UIAlertView  myAlert     UIAlertView alloc                            initWithTitle   Title                           message   Message                           delegate self                          cancelButtonTitle   Cancel                           otherButtonTitles   Ok  nil    myAlert show

User · Answer

Other answers already provide information for iOS 7 and older  however UIAlertView is deprecated in iOS 8   In iOS 8  you should use UIAlertController  It is a replacement for both UIAlertView and UIActionSheet  Documentation  UIAlertController Class Reference  And a nice article on NSHipster   To create a simple Alert View you can do the following   UIAlertController  alertController    UIAlertController alertControllerWithTitle   Title                                                                           message   Message                                                                    preferredStyle UIAlertControllerStyleAlert     We add buttons to the alert controller by creating UIAlertActions  UIAlertAction  actionOk    UIAlertAction actionWithTitle   Ok                                                     style UIAlertActionStyleDefault                                                  handler nil     You can use a block here to handle a press on this button  alertController addAction actionOk    self presentViewController alertController animated YES completion nil     Swift 3   4   5   let alertController   UIAlertController title   Title   message   Message   preferredStyle   alert    We add buttons to the alert controller by creating UIAlertActions  let actionOk   UIAlertAction title   OK       style   default      handler  nil    You can use a block here to handle a press on this button  alertController addAction actionOk   self present alertController  animated  true  completion  nil    Note  that  since it was added in iOS 8  this code won t work on iOS 7 and older  So  sadly  for now we have to use version checks like so   NSString  alertTitle     Title   NSString  alertMessage     Message   NSString  alertOkButtonText     Ok    if   available iOS 8            UIAlertView  alertView     UIAlertView alloc  initWithTitle alertTitle                                                         message alertMessage                                                        delegate nil                                               cancelButtonTitle nil                                               otherButtonTitles alertOkButtonText  nil        alertView show     else       UIAlertController  alertController    UIAlertController alertControllerWithTitle alertTitle                                                                              message alertMessage                                                                       preferredStyle UIAlertControllerStyleAlert         We add buttons to the alert controller by creating UIAlertActions      UIAlertAction  actionOk    UIAlertAction actionWithTitle alertOkButtonText                                                        style UIAlertActionStyleDefault                                                      handler nil     You can use a block here to handle a press on this button      alertController addAction actionOk        self presentViewController alertController animated YES completion nil       Swift 3   4   5   let alertTitle    Title  let alertMessage    Message  let alertOkButtonText    Ok   if  available iOS 8           let alertController   UIAlertController title  alertTitle  message  alertMessage  preferredStyle   alert        We add buttons to the alert controller by creating UIAlertActions      let actionOk   UIAlertAction title  alertOkButtonText          style   default          handler  nil    You can use a block here to handle a press on this button      alertController addAction actionOk      self present alertController  animated  true  completion  nil    else       let alertView   UIAlertView title  alertTitle  message  alertMessage  delegate  nil  cancelButtonTitle  nil  otherButtonTitles  alertOkButtonText      alertView show       UPD  updated for Swift 5  Replaced outdated class presence check with availability check in Obj-C

User · Answer

UIAlertView  alert     UIAlertView alloc   initWithTitle   Title    message   Message    delegate nil   or self  cancelButtonTitle   OK   otherButtonTitles nil      alert show     alert autorelease

User · Answer

As a supplementary to the two previous answers  of user  sudo rm -rf  and  Evan Mulawski    if you don t want to do anything when your alert view is clicked  you can just allocate  show and release it  You don t have to declare the delegate protocol

User · Answer

Simple alert with array data   NSString  name     YourArray objectAtIndex indexPath row  valueForKey   Name     NSString  msg     YourArray objectAtIndex indexPath row  valueForKey   message     UIAlertView  alert     UIAlertView alloc  initWithTitle name                                                 message msg                                                delegate self                                       cancelButtonTitle   OK                                        otherButtonTitles nil    alert show

[ios] Adding a simple UIAlertView

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