CustomPieDemo

This is a simple Pie like view. There are tons of readymade libs available already, but if you have something specific to implement and dont know how to start this might be helpful.

• This is more of a guide, the code is fairly documented and each step is well explained. key parts are,

  • Math that used to locate the point using circle equations
  • Click listener implemented for arc section(piece of pie)

• the View creation is roughly divided into four part

  • Measurement and calculation
  • View Draw
  • Item Click
  • Animation(this is still not implemented)

If you dont know where to begin follow init > onMeasure > setData > onTouchEvent

There are three attributes that can be used via xml

        <attr name="pie_width" format="dimension" />
        <attr name="divider_color" format="color" />
        <attr name="debug_section_count" format="integer" />

The debug_section_count is only for android studio layout preview. to populate view at runtime use,

        public void setData(List<Item> items)