Why he return 11 all the time ??? (btw. now is 16 h my local time)

Question

private void hour()
{
    Toast.makeText(this,String.valueOf(Calendar.HOUR_OF_DAY),Toast.LENGTH_LONG).show();
}

Answer 1

Because you just parsed the value of HOUR_OF_DAY which is 11. Forever and ever.

You should create an instance of GregorianCalendar, give it the current date, and use get(Calendar.HOUR_OF_DAY)

Code sample:

Calendar calendar = GregorianCalendar.getInstance();
calendar.setTime(new Date());
int hour = calendar.get(Calendar.HOUR_OF_DAY);