在菜鸟教程上学习安卓布局相关知识，学到了界面原型设计。 了解到了一下界面原型：
- Pencil
- Framer
- Shireframe
- UIDesigner
- Balsamiq Mockups
- Mockup Builder
- Mockup
- FrameBox
- iPhone Mockup
- GOOFLOW
- WireframeSketcher
- FluidIA
- Indigo Studio
- Origami
- Quartz Composer
- Justproto
- Avocado
- PaintCode
- Mockplus(摩客)
- 墨刀等....