Question

我想知道如何将多个值放入ArrayList<NameValuePair>。这是我的代码，但它不起作用。有人帮我解释ArraysList<NameValuePair>。这是我的代码：

public void OnClickForSave(View v) throws Exception {
    String st = null;
    String str = null;
    String response = null;
    String memberID = "000000007";
    String teamID = "000007";
    ArrayList<NameValuePair> postParameters = new ArrayList<NameValuePair>();
    postParameters.add(new BasicNameValuePair("userID", memberID));
    postParameters.add(new BasicNameValuePair("teamID", teamID));

    if (v.getId() == (R.id.imgbtn_layout2)) {
        Intent intent = new Intent(this, IntentTesting.class);
        startActivity(intent);
    }

    if (v.getId() == (R.id.imgbtn_lsave)) {
        if (txt_teamID.getText().toString().trim().equals(null)
                || txt_teamID.getText().toString().trim().equals("")) {
            AlertDialog empty = createDialogEmpty(this, "Enter Team ID");
            empty.show();
            txt_teamID.selectAll();
            txt_teamID.requestFocus();
        }
        else if (txt_teamID.getText().toString().trim().length() > 6) {
            AlertDialog notFormat = createDialogEmpty(this, "More Than 6 Characters");
            txt_teamID.selectAll();
            txt_teamID.requestFocus();
            notFormat.show();
        } else {
            try {
                st = CustomHttpClient.executeHttpGet("http://192.168.200.14/football365/DBConnection.php");
                str = CustomHttpClient.executeHttpGet("http://192.168.200.14/football365/responseJson.php");
                response = CustomHttpClient.executeHttpPost("http://192.168.200.14/football/joinTeam.php",
                        postParameters);
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }
    }
}

Answer 1

Sup哥们？在这种情况下，只需使用params的add函数。使用特定大小进行初始化并非强制要求。

List<NameValuePair> params = new ArrayList<NameValuePair>(); params.add(new BasicNameValuePair("Key1", "Value1")); params.add(new BasicNameValuePair("Key2", "Value"));

你会有这样的东西

Key1 = Value1; Key2 =值

希望它有效

Answer 2

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

您需要使用列表将存储的数据类型初始化ArrayLists。

在此之后使用：

ArrayList.add(element e);

您可以根据需要多次调用此方法。

Answer 3

尝试下面的代码

List<NameValuePair> postParameters = new ArrayList<NameValuePair>(2); postParameters.add(new BasicNameValuePair("userID",memberID)); postParameters.add(new BasicNameValuePair("teamID",teamID));

它对我有用。

如何将2个或更多值放入ArrayList <namevaluepair> </namevaluepair>

3 个答案: