# "Sketch launched on the device", but black screen on the phone

**URL:** https://discourse.processing.org/t/sketch-launched-on-the-device-but-black-screen-on-the-phone/8325
**Category:** Processing for Android
**Created:** [February 12, 2019, 2:02pm UTC](https://discourse.processing.org/t/sketch-launched-on-the-device-but-black-screen-on-the-phone/8325 "2019-02-12T14:02:38Z")
**Posts on this page:** 4
**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 12, 2019, 2:02pm UTC](https://discourse.processing.org/t/sketch-launched-on-the-device-but-black-screen-on-the-phone/8325/1 "2019-02-12T14:02:39Z")

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Hi! I have a code working at all. It runs everything and finds sketch’s data. The only error is a deprecated method, but it is underlined yellow, then I think it should not affect.

It says _Sketch launched on the device_, but on my phone it appears a fast flash and then a black screen when the app is opened.

Thank you very much 😊

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### Author: ![akenaton](https://avatars.discourse-cdn.com/v4/letter/a/a88e4f/32.png) [@akenaton](https://discourse.processing.org/u/akenaton)
#### Post date: [February 12, 2019, 2:50pm UTC](https://discourse.processing.org/t/sketch-launched-on-the-device-but-black-screen-on-the-phone/8325/2 "2019-02-12T14:50:28Z")

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@lf.parra====  
sure about your permissions???

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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 12, 2019, 2:57pm UTC](https://discourse.processing.org/t/sketch-launched-on-the-device-but-black-screen-on-the-phone/8325/3 "2019-02-12T14:57:02Z")

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Hi @akenaton. I’m not sure about permissions. I know I accepted them when installing Android sdk, but should I check them elsewhere? Thank you.

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### Author: ![akenaton](https://avatars.discourse-cdn.com/v4/letter/a/a88e4f/32.png) [@akenaton](https://discourse.processing.org/u/akenaton)
#### Post date: [February 12, 2019, 3:05pm UTC](https://discourse.processing.org/t/sketch-launched-on-the-device-but-black-screen-on-the-phone/8325/4 "2019-02-12T15:05:00Z")

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@lf.parra====  
i asked that because normally this kind of “flash” is resulting from the permissions which were not asked on runtime: the os try to open its permission window but very fastly closes…