Android: Loving Lean Layouts

Example code and application for Huyen Tue Dao's talk on optimizing Android layouts.

Application Structure

The launch screen of the application displays a list of examples for each section of the talk. Each section represents an individual tool or topic for layout optimization.

Sections (WIP)

1. Hierarchy Viewer: a complex layout containing several examples of Views and ViewGroups that could be optimized and that help demonstrate the use of the SDK Hierarchy Viewer.
2. Lint warnings: XML layouts that cause Lint warnings and that should generally be fixed when found.
3. Attributes: examples of using attributes/methods to consolidate multiple Views into a single View.
4. Simpler Views: examples of both using both Android features and selecting the most appropriate layout to reduce number of Views and flatten hierarchies.
5. Custom ViewGroup: example of using a custom ViewGroup to bypass double-layout passes from platform layouts such as the RelativeLayout. This example basically re-implements the launch screen (which uses RelativeLayout instances for each list item) with a custom ViewGroup. Some of the code in the CustomListItem was taken from Sriram Ramani's Custom ViewGroups.

Todo

1. Document code examples to distinguish the "bad practice" from the "good practice".
2. Finish implementing a fixed version of the "Hierarchy Viewer" layout.
3. Add back in the examples for inflation and ViewStub.