# White screen when running ketai code

**URL:** https://discourse.processing.org/t/white-screen-when-running-ketai-code/8386
**Category:** Processing for Android
**Created:** [February 14, 2019, 1:32am UTC](https://discourse.processing.org/t/white-screen-when-running-ketai-code/8386 "2019-02-14T01:32:42Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![lf.parra](https://avatars.discourse-cdn.com/v4/letter/l/9f8e36/32.png) [@lf.parra](https://discourse.processing.org/u/lf.parra)
#### Post date: [February 14, 2019, 1:32am UTC](https://discourse.processing.org/t/white-screen-when-running-ketai-code/8386/1 "2019-02-14T01:32:42Z")

</div>

```auto
import ketai.sensors.*;
KetaiSensor sensor;
sensor = new KetaiSensor(this);
println(sensor.list());

```

Hello. I think this is a very simple code, but it still does not work. Phone (Android 5.1.) is recognized and app is opened, but as a white screen.  
I think it is a problem of permissions or something else related with ketai. I have a more complex code, without errors, that does not run.

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<div class="post-metadata">

### Author: ![akenaton](https://avatars.discourse-cdn.com/v4/letter/a/a88e4f/32.png) [@akenaton](https://discourse.processing.org/u/akenaton)
#### Post date: [February 14, 2019, 11:14am UTC](https://discourse.processing.org/t/white-screen-when-running-ketai-code/8386/2 "2019-02-14T11:14:45Z")

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@lf.parra===  
with this code it s difficult to guess what is supposed to be displayed on screen!