Custom Components in Android

0) Android Custom Components Research Log

1-Nov-12

Custom Components

1) Compound Controls Research log

1-Nov-12

Compound Controls

2) Custom layouts: Research, Theory, Code snippets, Images

9-Nov-12

Here are steps involved in creating a custom layout 

Inherit from ViewGroup
Override OnMeasure
  Use a pencil and paper to figure out your algorithm
  Use ViewGroup.measureChild(). Don't directly use child.measure()
  (Unless you know what you are doing)
  Use layout params to stuff the origin of each child view
  Take into accound padding
Override OnLayout
  Just retrieve the layout param object and use its origin
Implement custom LayoutParams
Override layout params construction methods
Test it with exact, match parent, wrap content, and weights

3) Custom views

23-Oct-12

Custom views

4) Customizing a View: Essential Code Snippets

31-Oct-12

Customizing a View: Essential Code Snippets

5) Date Controls

30-Oct-12

Date Controls

6) How do you work with a surface view?

17-Oct-12

How do you work with a surface view?

7) Managing View State in Android: Techniques and Approaches

31-Oct-12

Managing View State in Android: Techniques and Approaches

8) On MeasureSpec

23-Oct-12

On MeasureSpec

9) onMeasure, onLayout, onDraw: Briefly speaking

3-Jun-13

onMeasure, onLayout, onDraw: Briefly speaking

10) Principles of Compound Controls: A semi article

2-Nov-12

Principles of Compound Controls: A semi article

11) Principles of Custom Layouts: A semi article

10-Nov-12

Principles of Custom Layouts: A semi article

12) Reading custom attributes

31-Oct-12

Reading custom attributes

13) Responding to events

23-Oct-12

Responding to events

14) The dispatchMethodX pattern in Android

7-Nov-12

The dispatch pattern in Android

15) Understand Android layout internals

17-Oct-12

Understand Android layout internals

16) What can you use the Hierarchy Viewer for?

20-Oct-12

What can you use the Hierarchy Viewer for?

17) Working with 2D graphics

19-Oct-12

Working with 2D graphics