# test11

**Repository Path**: fengbingwen/test11

## Basic Information

- **Project Name**: test11
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2017-03-09
- **Last Updated**: 2020-12-19

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# Android Performance - Rendering lesson - sample app

* Visualize and Fix Overdraw
  * Nullified the window background
  * Removed unnecessary backgrounds from xml markup
  * Display a background color only if there is no avatar image

* Fixing Overdraw with Canvas API
  * `clipRect` performs geometric restricts while drawing cards so that overdraw is restricted when cards are stacked.

* Optimizing your layout
  * Using a flattened layout hierarchy
  * linearLayout with nested views is replaced with a relativeLayout
  * using a hierarchy viewer we can see that the linearLayout performs poorly compared to the relativeLayout
# Render-sample