title: Android app is launching twice if i open from mailer link
body: <p>Even though this question is duplicate of <a href="https://stackoverflow.com/questions/18693950/application-is-launching-twice-if-opening-from-a-hyperlink">this</a>, It can not resolve my problem. 
  My problem is when I launch app through hyperlink in mail, my app is opening again as a new task even though app is already in background. I'm using 
  android:launchMode="standard"</p>
  
  <p>If I use android:launchMode="singleTask", It solves my problem but every time when I launch app from home screen Its start from splash screen activity even though app is in background. Please suggest solution to resolve above two issues.</p>
  
  <p>I also read about launch mode in google <a href="http://developer.android.com/guide/topics/manifest/activity-element.html#lmode" rel="nofollow noreferrer">doc</a>. But my mind do not have that much knowledge to observe. 
  Thank you in advance.</p>