Designing Effective Navigation //TODO
Planning Screens and Their Relationships: 1.screens list （cover all the possible use cases） 2. screens 关系图 -> map 3. 应用UI组件（simplistic / sophistiacted)
Planning for Multiple Touchscreen Sizes:
Designing Effective Navigation //TODO
Planning Screens and Their Relationships: 1.screens list （cover all the possible use cases） 2. screens 关系图 -> map 3. 应用UI组件（simplistic / sophistiacted)
Planning for Multiple Touchscreen Sizes: