title: Android fingerprintManager.hasEnrolledFingerprints() always return false in marsmallow android
body: <p>I want to use fingerprint auth in my app but, I got problem in Marsmallow android, here is my code</p>
  
  <p><code>public static boolean isFingerprintAvailable(Context context) {
          FingerprintManagerCompat fingerprintManager = FingerprintManagerCompat.from(context);
          return fingerprintManager.hasEnrolledFingerprints();
      }
  </code></p>
  
  <p>always return false even though I already registered a fingerprint on my marsmallow android phone.</p>