First thing is your date value in not in dd-MM-yyyy HH:mm:ss in format, it's should like as dd-MMM-yy HH:mm:ss.
Your date have only two digit in year and three character in month.
here is sample code for change date format.
String mStringDate = "25-Nov-15 14:23:34";
String oldFormat= "dd-MMM-yy HH:mm:ss";
String newFormat= "dd-MM-yyyy HH:mm";
String formatedDate = "";
SimpleDateFormat dateFormat = new SimpleDateFormat(oldFormat);
Date myDate = null;
try {
myDate = dateFormat.parse(mStringDate);
} catch (java.text.ParseException e) {
e.printStackTrace();
}
SimpleDateFormat timeFormat = new SimpleDateFormat(newFormat);
formatedDate = timeFormat.format(myDate);
tv_date.setText(formatedDate );