2. 字體效果(豎寫)https://github.com/lybeat/PlumbTextView
3.類似簽到(敲到天數)https://github.com/shuhart/StepView
4.CityPicker 城市選擇、定位、搜索及右側字母導航,類似美團 百度糯米 餓了麼等APP選擇城市功能https://github.com/zaaach/CityPicker
5.DateRangePicker 可以進行範圍選擇的事件選擇器 https://github.com/savvisingh/DateRangePicker
6.JZAndroidChart Android 股票圖表庫https://github.com/donglua/JZAndroidChart
7.Captcha Android滑塊驗證碼控件https://github.com/luozhanming/Captcha