How to detect Android Emergency Call?
<p>Briefly, I want to know if the user make an emergency call and get the call duration.</p>

<p>But:</p>

<ol>
<li><p>Emergency call doesn't send outgoing call broadcast.</p></li>
<li><p>Many phones don't record emergency call log, I had test several phones, that's totally depends on the manufacturers. And the same manufacturer may have different strategy.</p></li>
</ol>

<p>Observe the CallLog is a solution, but I want more coverage, what can I do?</p>
