青怡應用：手電筒

提供最簡單易用的手電筒功能
- 利用手機原有的閃光燈功能實現手電筒的效果
- 簡單易用，一點即開、一點即關 To provide the most easy to use flashlight
- Use the phone functions to achieve the original flash flashlight effect
- Easy to use, which means that, that is a little off