Turn on mobile data programmatically On devices above marshmallow not working

Question

I am working on an app where I need to turn mobile data after interval of 2 hours. But in devices which are above marshmallow its not working.I am not able to toggle the mobile data from the app.

public void setMobileDataState(boolean mobileDataEnabled)
{
    try
    {
        TelephonyManager telephonyService = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);

        Method setMobileDataEnabledMethod = telephonyService.getClass().getDeclaredMethod("setDataEnabled", boolean.class);

        if (null != setMobileDataEnabledMethod)
        {
            setMobileDataEnabledMethod.invoke(telephonyService, mobileDataEnabled);
        }
    }
    catch (Exception ex)
    {
        Log.e(TAG, "Error setting mobile data state", ex);
    }
}

public boolean getMobileDataState()
{
    try
    {
        TelephonyManager telephonyService = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);

        Method getMobileDataEnabledMethod = telephonyService.getClass().getDeclaredMethod("getDataEnabled");

        if (null != getMobileDataEnabledMethod)
        {
            boolean mobileDataEnabled = (Boolean) getMobileDataEnabledMethod.invoke(telephonyService);

            return mobileDataEnabled;
        }
    }
    catch (Exception ex)
    {
        Log.e(TAG, "Error getting mobile data state", ex);
    }

    return false;
}

Above method only worked for rooted devices. I also tried other way of doing it, but no luck. If any one have achieved this. Then please suggest something would be great help.