public class ConnectionClass
{
    Context context;
    private SharedPreferences setingPreferences = context.getSharedPreferences("Settings", Activity.MODE_PRIVATE);
    String ip;
    String classs = "net.sourceforge.jtds.jdbc.Driver";
    String db = "ISTABLocalDB";
    String un = "istab_wpf";
    String password = "istab_!234";
    @SuppressLint("NewApi")
    public Connection CONN() {
        ip = setingPreferences.getString("server", "");
        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
                .permitAll().build();
        StrictMode.setThreadPolicy(policy);
        Connection conn = null;
        String ConnURL = null;
        try {
            Class.forName(classs);
            ConnURL = "jdbc:jtds:sqlserver://" + ip + ";"
                    + "databaseName=" + db + ";user=" + un + ";password="
                    + password + ";";
            conn = DriverManager.getConnection(ConnURL);
        } catch (SQLException se) {
            Log.e("ERRO", se.getMessage());
        } catch (ClassNotFoundException e) {
            Log.e("ERRO", e.getMessage());
        } catch (Exception e) {
            Log.e("ERRO", e.getMessage());
        }
        return conn;

public ConnectionClass (Context context)
{
   this.context = context;

}

Context context;
private SharedPreferences setingPreferences;

public ConnectionClass(Context context){
    this.context = context;
}

public Connection CONN() {
    setingPreferences = context.getSharedPreferences("Settings", Activity.MODE_PRIVATE);
    ip = setingPreferences.getString("server", "");

    ...

private SharedPreferences setingPreferences;

public Connection CONN(Context context) {
    setingPreferences = context.getSharedPreferences("Settings", Activity.MODE_PRIVATE);
    ip = setingPreferences.getString("server", "");

    ...