how to get Inputs from touch keyboard...

@salvador007 your suggestion is good but i have impleted that in anotherway only thing left is when keyboard is done writing... see my above comment

yahhh ... can you explain me how actually we can restrict the user to write name up to 15 characters ...if they write above the limit of 15 character show notification to write in between 0-15 character ? is it possible in unity ? and i am showing the text through the GUIText...
#pragma strict

 public var enterName:GUIText;
 var inputText : String = "Enter name";
     private var keyboard : TouchScreen$$anonymous$$eyboard;
     // Updates button's text while user is typing
     function OnGUI() {
         if (GUI.Button(Rect(0, 10, 200, 32), inputText))
 
             keyboard = TouchScreen$$anonymous$$eyboard.Open(inputText);
 
         if (keyboard)
             inputText = keyboard.text;
             enterName.text=inputText;
     }

Try this

 public var enterName:GUIText;
     var inputText : String = "Enter name";
         private var keyboard : TouchScreen$$anonymous$$eyboard;
         // Updates button's text while user is typing
         function OnGUI() {
            if (GUI.Button(Rect(0, 10, 200, 32), inputText))
              keyboard = TouchScreen$$anonymous$$eyboard.Open(inputText);
      
            if (keyboard) {
              inputText = keyboard.text;
              if(inputText.length < 15)
                enterName.text = inputText;
              else 
                GUI.Label(Rect(0, 50, 200, 32), "Name is too long. Use less than 15 chars");
            }
         }

@OSG now i have implemented it like this way.. with button as it was before and i give the GUIStyle to button so it doesn't show the black background and i adjusted the button position and it show on the exact writing box so when i touch the writing box it show keyboard and in the inspector,i set the GUISTyle text cliping enable so the text doesn't go out of the box and through lenght method i can measure the lenght ....now only thing left is when i press the done button it should play an iTween animation or load new level ...i tried to make it happen like below code but it showing me error on keyboad.done (NullReferenceException: Object reference not set to an instance of an object touchinput.OnGUI () (at Assets/Scripts/touchinput.js:18) )

 var inputText : String = "Enter name";
     var guiStyle:GUIStyle;
     var timer:float;
     var done: boolean; 
     private var keyboard : TouchScreen$$anonymous$$eyboard;
     // Updates button's text while user is typing
     function OnGUI() 
         {
         timer+=Time.deltaTime;
         if(timer>7)
         if (GUI.Button(Rect(Screen.width/2-200,Screen.height/2-220,Screen.width/2,Screen.height/18), inputText,guiStyle))
 //            print("IN");
     {
             keyboard = TouchScreen$$anonymous$$eyboard.Open(inputText, TouchScreen$$anonymous$$eyboardType.Default);
     }
         if (keyboard.done)
             
             inputText = keyboard.text;
             var lenght= inputText.length;
             print(lenght);
             
     }
 

from Here i had that done method

Funny thing .... i don't know its a bug or what... in unity console it show the error (NullReferenceException: Object reference not set to an instance of an object touchinput.OnGUI () (at Assets/Scripts/touchinput.js:18) ) .....but when i build and run on my android device it works fine lolx :D... ... now whats this ? .. :D #pragma strict

     var inputText : String = "Enter name";
     var guiStyle:GUIStyle;
     var timer:float;
 //    var done: boolean; 
     private var keyboard : TouchScreen$$anonymous$$eyboard;
     // Updates button's text while user is typing
     function OnGUI() 
         {
 
         if (GUI.Button(Rect(Screen.width/2-200,Screen.height/2-220,Screen.width/2,Screen.height/18), inputText,guiStyle))
 //            print("IN");
     {
             keyboard = TouchScreen$$anonymous$$eyboard.Open(inputText, TouchScreen$$anonymous$$eyboardType.Default);
     }
         if (keyboard)
         {    
             inputText = keyboard.text;
             var lenght= inputText.length;
         }
 //            Application.LoadLevel(0);
     if(keyboard.done)
     {
         Application.LoadLevel(0);    
     }
             
     }