Android: Login and Logout in all the activities
<p>Am beginner to android, I have one clarification in <strong>Login &amp; Logout</strong>... I will get the username and password through json....So no problem with that....</p>

<p>Now, there are three activities in my app.. All the activities has <strong>"Login "</strong> function, if i login in any of the three activities,  it should <strong>logged in</strong> all the activities.</p>

<p>And the same way , if i logout in any of the three activities,  it should <strong>logged out</strong> all the activities.</p>

<p>Thanks.</p>
