Algorithm 1 Context construction algorithm.

Input  Function Call Graph $CG$  Privacy Disclosure Path $Paths$  System and UI Events $Events$  Permission Mapping Table $Table$ Output  Context $PrivacyContext$ Begin  $PrivacyContext=null$  $context=null$  for all $e\in E$ do   if $e.target\in PrivacyAPI$ then    $n_e=getEntryPointFromCG(e.origin)$ //Retrieval entry function from CG    $permission=getPermissionFromTable(e.target)$ //Retrieval API permission    for all $path\in Paths$ do     if $path.source==e.target$ then      $context.add(<path,n_e>)$ //Add context     end if    end for    $PrivacyContext.add(e.target,permission,context)$    $context.clear\left(\right)$   end if  end for  return $PrivacyContext$