title: I require regex for entering numerical decimal values and colon for android
body: <p>I need to enter only <strong>decimal numeric values with two decimal points</strong> or <strong>9:9999</strong>.</p>
  
  <pre><code>e.g. 665.44, 95.09 etc 
  else only 9:999
  </code></pre>
  
  <p>If some body has a good link how to understand <strong>regex</strong> and create logic.</p>