title: How to make a SearchView only look for coincidences if a key/button is pressed, not on if the text changes
body: <p>I need to add a search functionality to my app.</p>
  
  <p>All the queries are going to be made upon a table (SQLite table) that might have 6 or 7 thousand records and I don't think it would be good idea to perform searches on this table for every single character the user enters. For that reason I only want to look for coincidences when the user has done typing and he/she presses a find button (which would be great it was only enabled if the user entered a minimum number of characters)</p>
  
  <p>Do you know how this can be accomplished?</p>
  
  <p>Thanks in advance.</p>