Having to enter password instead of fingerprint on Nexus 6P CM13 #144

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1. sakshamsharma commented on Apr 14, 2017

   

   sakshamsharma

   on Apr 14, 2017

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   I can confirm this happens for OnePlus 3T as well. The reason, as I understand, is Android's security policy of disabling fingerprint unlocks whenever the screen was locked by an app. Please verify that the issue only happens when you let AcDisplay turn off your screen (timeout).

   @AChep are there any plans to fix this? There are some tricks for rooted phones I understand. Perhaps add them as an option? I moved back to stock lock screen without AcDisplay because of this issue 😢
2. AChep commented on Apr 20, 2017

   

   AChep

   on Apr 20, 2017

   Owner

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   Unfortunately I don't really want to add another workaround and see it patched in next Android version. Sorry, guys.
3. sakshamsharma commented on Apr 20, 2017

   

   sakshamsharma

   on Apr 20, 2017

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   Would it ever be patched though? As I understand, it has been there since 5.0, and being a security policy, it is unlikely it can be removed without exposing some vulnerability. Just mentioning.

   Also, It may help to keep this issue open, for others who may stumble here.

   Thanks!
4. flasd commented on May 25, 2017

   

   flasd

   on May 25, 2017

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   Nova Launcher works around this by changing screen timeout to 5 seconds, showing a black screen and preventing touch interacting while screen is on. When screen locks, the screen timeout goes back to default and the security policy doesn't kick in, so we can use the fingerprint scanner. This is even better in amoled phones. Seems trivial to implement.
5. XChikuX commented on Jul 13, 2017

   

   XChikuX

   on Jul 13, 2017

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   flasd's comment really should be implemented as a workaround. Please take this into consideration ACdisplay team.
   Show a pitch black #000 screen,
   Change screen timeout to 5 seconds, till it locks.
   Change it back to default.

   This is what nova does. And it's wonderful.
6. flasd commented on Jul 13, 2017

   

   flasd

   on Jul 13, 2017

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   @AChep could you do something like:

   // pseudocode
   if (userPref.respectSecurityPolicy) {
       android.provider.Settings.System.putInt(getContentResolver(),
            Settings.System.SCREEN_OFF_TIMEOUT, 5);
   
       ui.beBlack();
   
       onDeviceTimeout(
           android.provider.Settings.System.putInt(getContentResolver(),
               Settings.System.SCREEN_OFF_TIMEOUT, default);
       );
   } else {
        // from source MainActivity.java 227
         DevicePolicyManager dpm = (DevicePolicyManager) 
             getSystemService(Context.DEVICE_POLICY_SERVICE);
   
          dpm.lockNow();
   }

   I don't really want to add another workaround and see it patched in next Android version. Sorry, guys.

   I understand that creating a workaround for it to be patched by the next version of android sucks, but nowadays almost all new phones have fingerprint scanners and this security policy is a real deal breaker for the app.

   And, (I'm not an Android developer) it seems easy to implement, 30 minutes, maybe? I'd love to help testing it.

   If I was better with java i'd create a pull request, ow well.

   Thanks for the attention though.
7. ian-speckart commented on Jul 13, 2018

   

   ian-speckart

   on Jul 13, 2018

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   @AChep
   Any news on this? Currently AcDisplay can't be used on new phones (>Nougat) because when it turns off the screen, it does so by locking the device (which then prevents it from being unlocked by fingerprint).
   Nova Launcher solved this long ago, as it's mentioned above.

   👍React with 👍3Reacted by Marcel Coelho, Ellie LeFevre and grimelda