public void addUser(View view) {
   String usr = username.getText().toString();
   String pwd = password.getText().toString();
   long id = helper.insertData(usr, pwd);
   if (id < 0) {
     Message.Message("unsuccessful", this);
   } else {
     Message.Message("successfull", this);
   }
 }
  public void getDetail(View view) {

    String search = get_Detail.getText().toString();
    Toast.makeText(this, helper.getData(search), Toast.LENGTH_LONG).show();
  }
 public void viewAll(View view) {
   String data = helper.loadData();
   Message.Message(data, this);
 }