DepartmentsActivity.java

package com.cellasoft.univrapp.activity;

import android.os.Bundle;
import android.view.View;
import android.widget.ListView;
import com.cellasoft.univrapp.R;
import com.cellasoft.univrapp.Settings;
import com.cellasoft.univrapp.adapter.DepartmentAdapter;
import com.cellasoft.univrapp.model.Channel;
import com.cellasoft.univrapp.model.Department;
import com.cellasoft.univrapp.utils.AsyncTask;

public class DepartmentsActivity extends BaseListActivity {

    private DepartmentAdapter adapter;

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

    @Override
    protected void onDestroy() {
        super.onDestroy();
        adapter.clear();
    }

    private void init() {
        initListView();
        initActionBar();
        setResult(RESULT_CANCELED);
    }

    @Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
        Department department = new Department(adapter.getItem(position));
        Channel channel = new Channel(department.name, department.url);
        saveLecturers(channel);
    }

    private void saveLecturers(Channel channel) {
        new AsyncTask<Channel, Void, Boolean>() {

            protected void onPostExecute(Boolean success) {
                if (success) {
                    setResult(RESULT_OK);
                    finish();
                }
            }

            @Override
            protected Boolean doInBackground(Channel... params) {
                if (params != null && params.length > 0) {
                    params[0].save();
                    Settings.setUniversity(params[0].title);
                    return true;
                }
                return false;
            }

        }.execute(channel);
    }

    @Override
    protected void loadData() {
        // do nothing
    }

    @Override
    protected void initListView() {
        adapter = new DepartmentAdapter(this, R.layout.university_list_item);
        getListView().setAdapter(adapter);
    }

    @Override
    protected void initActionBar() {
        getSupportActionBar().setTitle("Dipartimenti");
    }
}