android How to retive data in spinner from database

Please help me to retrive spinner hint from database as i am totally new with android. My code is given below.

enter code here

@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_login);

    getid();
    setListner();


    List<String> list = new ArrayList<String>();
    list.add("string1");
    list.add("string2");
    list.add("string3");
    list.add("[Select one]");
    final int listsize = list.size() - 1;
    ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item, list) {
        @Override
        public int getCount() {
            return(listsize); // Truncate the list
        }
    };
    dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    spSelectName.setAdapter(dataAdapter);

    spSelectName.setSelection(listsize); // Hidden item to appear in the spinner


}

private void setListner() {

    try {
        btnLogin.setOnClickListener(this);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

private void getid() {

    try {
        tvMacAddress =(TextView)findViewById(R.id.tvMacAddress);
        spSelectName =(Spinner)findViewById(R.id.spSelectName);
        edtPassword =(EditText)findViewById(R.id.edtPassword);
        btnLogin =(Button)findViewById(R.id.btnLogin);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

@Override
public void onClick(View v) {

    switch (v.getId())
    {
        case R.id.btnLogin :
            Intent intent = new Intent(this,Interview.class);
            startActivity(intent);
            break;
    }
}

}