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."); 
         
    }