While working on an Android application I wanted to test permission requests. This application needed the location permission, typically this is code that is written once and when it is marked as done never looked at again. I wanted to create some UI tests to ensure that everything works and will still work in the future as expected.

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In 2017 I started working on an Android app, at some point a custom graph was needed that could be changed by the user. Drawing the different parts on the screens gives the most flexibility. The Canvas is used for drawing, the custom component where the drawing will happen is a class which inherits from View.

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