Question

我正在尝试将我的联系人号码发送到服务器，以检查我的数据库中是否包含这些号码。数据库和手机地址列表中包含的所有数字最终都应显示在列表视图中。

使用for each循环（＆＃39; for（String phoneNumberString：aa）＆＃39;）我收到此警告：＆＃39; for＆＃39;声明不循环...

我该如何解决这个问题？

    public class AllUserActivity extends ListActivity {

// Progress Dialog
private ProgressDialog pDialog;

// Creating JSON Parser object
JSONParser jParser = new JSONParser();

ArrayList<HashMap<String, String>> usersList;

// url to get all users list
private static String url_all_user = "http://.../.../.../get_user.php";

// JSON Node names
private static final String TAG_SUCCESS = "success";
private static final String TAG_USER = "user";
private static final String TAG_PHONE = "phone";
private static final String TAG_UID = "uid";
private static final String TAG_USERNAME = "username";

String phoneNumber;

ArrayList<String> aa= new ArrayList<String>();

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.all_user);

    // Hashmap for ListView
    usersList = new ArrayList<HashMap<String, String>>();

    // Loading users in Background Thread
    new LoadAllUsers().execute();

    getNumber(this.getContentResolver());

}

// get all numbers of contacts
public void getNumber(ContentResolver cr)
{
    Cursor phones = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,null,null, null);
    // use the cursor to access the contacts
    while (phones.moveToNext())
    {
        phoneNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
        String phoneNumberString = phoneNumber.replaceAll("\\D+","");

        // get phone number
        System.out.println(".................."+phoneNumberString);
        aa.add(phoneNumberString);
    }
    phones.close();// close cursor
}

class LoadAllUsers extends AsyncTask<String, String, String> {

    @Override
    protected void onPreExecute() {
        super.onPreExecute();
        pDialog = new ProgressDialog(AllUserActivity.this);
        pDialog.setMessage("Loading users. Please wait...");
        pDialog.setIndeterminate(false);
        pDialog.setCancelable(false);
        pDialog.show();
    }

    protected String doInBackground(String... args) {

        ArrayList<BasicNameValuePair> params = new ArrayList<BasicNameValuePair>();

            for (String phoneNumberString : aa){
            params.add(new BasicNameValuePair("phone[]", phoneNumberString));

            // getting JSON string from URL
            JSONObject json = jParser.makeHttpRequest(url_all_user, "GET", params);

            // Check your log cat for JSON response
            Log.d("All users: ", json.toString());

            try {
                // Checking for SUCCESS TAG
                int success = json.getInt(TAG_SUCCESS);

                if (success == 1) {
                    JSONArray users = json.getJSONArray(TAG_USER);

                    // looping through all contacts
                    for (int i = 0; i < users.length(); i++) {
                        JSONObject c = users.getJSONObject(i);

                        // Storing each json item in variable
                        String uid = c.getString(TAG_UID);
                        String phone = c.getString(TAG_PHONE);
                        String username = c.getString(TAG_USERNAME);

                        // creating new HashMap
                        HashMap<String, String> map = new HashMap<String, String>();

                        // adding each child node to HashMap key => value
                        map.put(TAG_UID, uid);
                        map.put(TAG_PHONE, phone);
                        map.put(TAG_USERNAME, username);

                        // adding HashList to ArrayList
                        usersList.add(map);
                    }
                }
            } catch (JSONException e) {
                e.printStackTrace();
            }
            return null;
        }
        return null;
    }

    // After completing background task Dismiss the progress dialog

    protected void onPostExecute(String file_url) {
        // dismiss the dialog after getting all users
        pDialog.dismiss();
        // updating UI from Background Thread
        runOnUiThread(new Runnable() {
            public void run() {

                 // Updating parsed JSON data into ListView
                ListAdapter adapter = new SimpleAdapter(
                        AllUserActivity.this, usersList,
                        R.layout.list_users, new String[] { TAG_PHONE,
                        TAG_USERNAME},
                        new int[] { R.id.phone, R.id.name });
                // updating listview
                setListAdapter(adapter);
            }
        });
    }}
  }

Answer 1

你的for循环结束时有一个return语句，这意味着它将通过第一个元素并从doInBackground（）调用返回。

'for'语句不循环（联系应用程序）

1 个答案: