# Processing core library development Issue

**URL:** <https://discourse.processing.org/t/processing-core-library-development-issue/16655>\
**Category:** Processing for Android\
**Created:** [December 27, 2019, 12:01pm UTC](https://discourse.processing.org/t/processing-core-library-development-issue/16655 "2019-12-27T12:01:44Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![pallav12](https://avatars.discourse-cdn.com/v4/letter/p/34f0e0/32.png) [@pallav12](https://discourse.processing.org/u/pallav12)\
**Post date:** [December 27, 2019, 12:01pm UTC](https://discourse.processing.org/t/processing-core-library-development-issue/16655/1 "2019-12-27T12:01:44Z")

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Hello everyone,  
I want to contribute in **processing core library for android** , most of my doubts are now clear from readme but I still have some.

- Which repository should I clone? if I want to work on **core library** specifically do I need to clone whole [processing/processing-android](https://github.com/processing/processing-android)??
- On which branch should I create my Pull request? And why there’re so many branches?

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**Author:** ![kfrajer](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/kfrajer/32/196_2.png) [@kfrajer](https://discourse.processing.org/u/kfrajer)\
**Post date:** [December 27, 2019, 9:48pm UTC](https://discourse.processing.org/t/processing-core-library-development-issue/16655/2 "2019-12-27T21:48:39Z")

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Are you aware of these instructions: [Building Processing for Android](https://github.com/processing/processing-android/wiki/Building-Processing-for-Android)?

From which branch? I would clone from master as you can see from the “Network graph” (screenshot below). This shows the latest active branch.

Feel free to explore the [wiki section](https://github.com/processing/processing-android/wiki) to find other useful information about the project.

Kf

 ![firefox_eAebCfc3E7](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/2X/d/d0b38fe009440123700854b5e8543043f38fdf7c.png)