iOS gets the height of the keyboard (simple and effective)

iOS gets the height of the keyboard(2013-03-06 17:45:31)

Tags:keyboardtextfieldtextviewios keyboard height

Category: iOS notes

1. -(void) Viewdidload

   {

   [Super Viewdidload];

   //Increase monitoring to receive messages when the keyboard appears or changes

   [[nsnotificationcenter defaultcenter] addobserver: Self

   selector:@selector (keyboardwillshow:)

   Name:uikeyboardwillshownotification

   object:nil];

   //increased monitoring, when the key exits when the message is received

   [[nsnotificationcenter defaultcenter] addobserver: Self

   selector:@selector (keyboardwillhide:)

   Name:uikeyboardwillhidenotification

   object:nil];

   }

   Called when the keyboard appears or changes

   -(void) Keyboardwillshow: (nsnotification *) anotification

   {

   //Get the height of the keyboard

   nsdictionary *userinfo = [anotification userInfo];

   Nsvalue *avalue = [UserInfo objectforkey: Uikeyboardframeenduserinfokey];

   cgrect keyboardrect = [Avalue cgrectvalue];

   int height = keyboardrect. size. height;

   }

   Called when the key exits

   -(void) Keyboardwillhide: (nsnotification *) anotification

   {

   }

iOS gets the height of the keyboard (simple and effective)