title: Make Google Duo audio/ video call on button click
body: <p>I can successfully open Google DUO but I want to initialize audio/video call on selecting a particular contact.</p>
  
  <pre><code>  Intent launchIntent = getPackageManager().getLaunchIntentForPackage("com.google.android.apps.tachyon");
      launchIntent.setAction("android.intent.action.VIEW");
      launchIntent.setData(Uri.parse("tel:1234567"));
      if (launchIntent != null) {
          startActivity(launchIntent);//null pointer check in case package name was not found
      }
  </code></pre>
  
  <p>My log file shows this.</p>
  
  <pre><code>06-17 12:43:37.813 28656-28656/com.example.waheed.duo V/BoostFramework: BoostFramework() : mPerf = com.qualcomm.qti.Performance@68d2df8
  
  Timeline: Activity_launch_request time:53818311 intent:Intent { act=android.intent.action.VIEW cat=[android.intent.category.LAUNCHER] 
  dat=tel:xxxxxxx flg=0x10000000 pkg=com.google.android.apps.tachyon 
  cmp=com.google.android.apps.tachyon/.MainActivity }
  </code></pre>