小编Dom*_*cca的帖子

你好.通过下面列出的代码,我的listview项目不会以任何方式响应点击.有人可以帮帮我吗？提前致谢.

public class ListaActivity extends Activity {

    public final static String EXTRA_MESSAGE = "com.example.provacomunicazione.MESSAGE";
    @Override
    public void onCreate(Bundle savedInstanceState)  {
        super.onCreate(savedInstanceState); 
        setContentView(R.layout.lsta);
        Resources res = getResources();
        String[] Authors = res.getStringArray(R.array.Lista_Nomi_E_Cognomi_Autori);
        ArrayList<String> Autori = new ArrayList<String>();
        for (String temp:Authors) {
            Autori.add(temp);
        }
        Collections.sort(Autori);
        ArrayList<String> AutoriLetteraSelezionata = new ArrayList<String>();
        for (String temp:Autori) {
            if (temp.charAt(0)=='A') {
                AutoriLetteraSelezionata.add(temp);
            }
        }
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,R.layout.textviewitem, AutoriLetteraSelezionata);
        ListView listView = (ListView) findViewById(R.id.listView1);
        listView.setAdapter(adapter);
        listView.setClickable(true);
        listView.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View view, …

跟着我的课程

 public class fetchUserDataAsyncTask extends AsyncTask<Void, Void, User> {
    User user;
    GetUserCallback userCallBack;

    public fetchUserDataAsyncTask(User user, GetUserCallback userCallBack) {
        this.user = user;
        this.userCallBack = userCallBack;
    }

    @Override
    protected User doInBackground(Void... params) {
        ArrayList<NameValuePair> dataToSend = new ArrayList<>();
        dataToSend.add(new BasicNameValuePair("username", user.username));
        dataToSend.add(new BasicNameValuePair("password", user.password));

        HttpParams httpRequestParams = new BasicHttpParams();
        HttpConnectionParams.setConnectionTimeout(httpRequestParams,
                CONNECTION_TIMEOUT);
        HttpConnectionParams.setSoTimeout(httpRequestParams,
                CONNECTION_TIMEOUT);

        HttpClient client = new DefaultHttpClient(httpRequestParams);
        HttpPost post = new HttpPost(SERVER_ADDRESS
                + "FetchUserData.php");

        User returnedUser = null;

        try {
            post.setEntity(new UrlEncodedFormEntity(dataToSend));
            HttpResponse httpResponse = client.execute(post);

            HttpEntity entity = httpResponse.getEntity(); …