Error 401 when login twitter by twitter4j
<p>I am doing an app android to login and upload photo to twitter.</p>

<p>I used twitter4j to login and reference some tutorial..I extract that consumer key and consumer secret key are filled correct.But I encountered an error"401: Authentication credential...".Have a solution to fix it is sync time my server with time twitter server..But I don't understand what sync time here and how to extractly..</p>

<p>Can you help me.</p>
