Is possible to set System DateTime from my Android App?
问题 I want to set system clock by SystemClock.setCurrentTimeMillis , but met following error: "Unable to open alarm driver: Permission denied" Below is the Description of setCurrentMillis API from Android Developers Site: public static boolean setCurrentTimeMillis (long millis) Since: API Level 1 Sets the current wall time, in milliseconds. Requires the calling process to have appropriate permissions. Returns if the clock was successfully set to the specified time. So, Application Needs to obtain