跟天哥在奔跑学习Android开发基础知识，同时练习Git的使用: )

• Material Design ICON: https://github.com/google/material-design-icons

• Material Design Color: https://www.materialpalette.com

• LinearLayout(left) & RelativeLayout(right)

• TextView(left) & Button(right)

• EditText(login page)

• RatioButton(left.bug) & CheckBox(right)

• ImageView(left) & ListView(right)

• GridView(left) & ScrollView(right)

• RecyclerView(Linear & Horizontal & Grid)

• RecyclerView(Waterfalls flow(left) & Different ViewHolder(right))

• WebView