title: Integrate Paytm PGSDK_V2.0 Android
body: <p>I am Integrating <code>Paytm PGSDK_V2.0</code> in my android app. I have read all documentation  on <a href="https://github.com/Paytm-Payments/Paytm_Android_App_Kit" rel="noreferrer">Github</a>. I have understand everything.but the problem is in its earlier SDK where we can simply generate checksum using <code>Paytm Merchant</code> object Like:</p>
  
  <pre><code>PaytmMerchant merchant=new PaytmMerchant("Checksum generation url","Checksum verification url");  
  </code></pre>
  
  <p>and put this in Service Like this</p>
  
  <pre><code> Service.initialize(Order,merchant,null);
  </code></pre>
  
  <p>But in new SDK it change to </p>
  
  <pre><code> Service.initialize(Order,null);
  </code></pre>
  
  <p>So please help me how to generate checksum in new SDK </p>