(Android 2D Heatmap Chart) How can I draw a frame to the cell's borders?

Thanks for the reply Yura. You are very involved. I will try to solve my problem with box annotation as you suggested.

Hi Mustafa,

For now FastUniformHeatmapRenderableSeries doesn’t support drawing of cell borders out of the box. To add them you’ll need either to extend series ( override internalDraw() and add code which renders border rects via RenderContext API ) or you can add them as BoxAnnotation. If you need to highlight only few cells then BoxAnnotation would be simpler to add, but if you need to add border for all cells and heatmap has big size, then it would be better to implement custom RenderableSeries, because BoxAnnotation is implemented as Android View and there could be some FPS degradation if you have alot of them on screen

Best regards,
Yura