Android的权限归类

Android的权限分类
Android permissions are separated to four groups:
- Regular
- Dangerous
- System or Signed
- Signed

Permissions in the first two groups can be granted to any application.
The last two can be obtained only by applications which are system - preinstalled in the device's firmware or which are signed with the "platform key", i.e. the same key that was used to sign the firmware.