How to Update the Terminal's Time Setting

Automatic Update via Wi-Fi

When the Wi-Fi connection is enabled, the date and time will automatically update.

Manual Update

Go to: Settings > Date & Time.
Disable "Automatic time zone" and "Automatic date & time".
Manually set the date and time as needed.

Update via API

Utilize the Android system clock method to change the system time programmatically.

Required Permissions

To use the API method, include the following permission in your application's manifest: 'android.permission.CLOUDPOS_SETTIME'.

Accessing Demo Source

To understand the implementation details, please download the complete project demo.

public static void setDateTime(int year, int month, int day, int hour, int minute) throws IOException, InterruptedException {
 
        Calendar c = Calendar.getInstance();
        c.set(Calendar.YEAR, year);
        c.set(Calendar.MONTH, month-1);
        c.set(Calendar.DAY_OF_MONTH, day);
        c.set(Calendar.HOUR_OF_DAY, hour);
        c.set(Calendar.MINUTE, minute);
         
        long when = c.getTimeInMillis();
        if (when / 1000 < Integer.MAX_VALUE) {
            SystemClock.setCurrentTimeMillis(when);
        }
        long now = Calendar.getInstance().getTimeInMillis();
        //Log.d(TAG, "set tm="+when + ", now tm="+now);
 
        if(now - when > 1000)
            throw new IOException("failed to set Date."); 
         
    }