android - myIntent.getStringExtra returns null? -

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When I try to send the string with intentions while switching activities, I am having a strange problem.

Here I will do the class 1: 

  myIntent = new intent (SearchText.this, Search.class); MyIntent.putExtra ("search", spinnerselected); MyIntent.putExtra ("SearchText", input); StartActivity (myIntent);   
 class 2:  
  intends to myIntent = getIntent (); SearchText = myIntent.getStringExtra ("SearchText"); Spinnerselectednumber = Integer.parseInt (myIntent.getStringExtra ("searchx"));   
 And by using debugger in second class, it is clear that there is a value in it.  
 However the line  myIntent.getStringExtra ("searchx")  returns  null .  
 Why is that so?   
 
 
 what  spinner selected  is a string?  
 
  Since:  API Level 1  
 
>  Description:  get receive.  
  Parameter:   
  Name  name of the desired item  
  Returns:  The value of an item previously added to  putExtra ()  or tap if no string value was found.   
 
 There are several ways to retrieve "Extras" - whatever  spinner was selected , trying to recover it using the proper method Please. For example, if it was an int:  
  public int getIntExtra (name of string, default default)

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