title: Android activity history stack problem
body: <p>In my application, I have problem with activity history stack. Indeed, consider I have 5 activities : </p>
  
  <ol>
  <li>Splashscreen </li>
  <li>SignUp</li>
  <li>SignIn</li>
  <li>ForgottenPassword </li>
  <li>Home</li>
  </ol>
  
  <p>I would see :</p>
  
  <ul>
  <li>First launch (user not logged) : 3 differents wireframes possible
  
  <ul>
  <li>Splashscreen -> SignUp -> Home</li>
  <li>Splashscreen -> SignUp (already member) -> SignIn (valid log) -> Home</li>
  <li>Splashscreen -> SignUp (already member) -> SignIn -> ForgottenPassword (login/password receive by mail)-> SignIn (valid log) -> Home</li>
  </ul></li>
  <li>Other launch (user registered) : Splashscreen -> Home (auto log)</li>
  </ul>
  
  <p>The problem is : 
  I would like 2 tasks, one with Splashscreen, SignUp, SignIn and ForgottenPassword and an other with Splashscreen and Home.
  Why ? Because back from Home should close the application but go back to previous activity (SignUp or SignIn according wireframe).
  Define activity with <code>history=true</code> on SignUp and SignIn do that but does not allow ForgottenPassword -> SignIn and SignIn -> SignUp :(</p>
  
  <p>Thanks for your help</p>