Android的凌空POST请求 - 解决方法JsonArrayRequest

本文介绍了Android的凌空POST请求 - 解决方法JsonArrayRequest的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我了解使用JsonArrayRequest的POST请求不可用出来抽射箱子，但我看到这个帖子here该谈论加入一个构造函数来处理这个问题。它们的实施是这样的：

I understand that POST requests using JsonArrayRequest are not available out of the box with Volley, but I saw this post here that talked about adding a constructor to handle this. Their implementation was this:

public JsonArrayRequest(int method, String url, JSONObject jsonRequest,
        Listener<JSONArray> listener, ErrorListener errorListener) {
    super(method, url, (jsonRequest == null) ? null : jsonRequest.toString(),
        listener, errorListener);
}

我将如何去添加此作为构造？以上提到的问题将其凌空工具资源库中我进口排球作为一个.jar，所以我不知道如何添加一个构造函数就是这样，如果这是最好的办法。任何帮助深表AP preciated。

How would I go about adding this as a constructor? The above question mentions placing it in the Volley Tool Library. I imported Volley as a .jar, so I'm not sure how to add a constructor like this, or if this is the best approach. Any help is much appreciated.

修改

我已经创建了覆盖和构造下面的类的建议。这里是类：

I've created the following class with override and constructor as suggested. Here is the class:

public class PostJsonArrayRequest extends JsonArrayRequest {

    @Override
    protected Map<String, String> getParams() throws AuthFailureError {
        HashMap<String, String> params = new HashMap<String, String>();
        params.put("name", "value");
        return params;
    }

    public PostJsonArrayRequest(int method, String url, JSONObject jsonRequest,
            Listener<JSONArray> listener, ErrorListener errorListener) {
        super(Method.POST, url, null, listener, errorListener);
    }
}

在该行调用super我越来越构造JsonArrayRequest（整型，字符串，空，Response.Listener＆LT; JSONArray＆gt;中Response.ErrorListener）未定义

On the line calling super I'm getting The constructor JsonArrayRequest(int, String, null, Response.Listener<JSONArray>, Response.ErrorListener) is undefined

我如何纠正此？

推荐答案

创建一个类并扩展 JsonArrayRequest 然后重写

Create a class and extend JsonArrayRequest then override

@Override
protected Map<String, String> getParams() throws AuthFailureError {
    HashMap<String, String> params = new HashMap<String, String>();
    params.put("name", "value");
    return params;
}

和添加一个新的构造，并调用它

and add a new constructor and in it call

super(Method.POST, url, null, listener, errorListener);

或使用此类

public class PostJsonArrayRequest extends JsonRequest<JSONArray> {

    /**
     * Creates a new request.
     * @param url URL to fetch the JSON from
     * @param listener Listener to receive the JSON response
     * @param errorListener Error listener, or null to ignore errors.
     */
    public PostJsonArrayRequest(String url, Response.Listener<JSONArray> listener, Response.ErrorListener errorListener) {
        super(Method.POST, url, null, listener, errorListener);
    }

    @Override
    protected Map<String, String> getParams() throws AuthFailureError {
        HashMap<String, String> params = new HashMap<String, String>();
        params.put("name", "value");
        return params;
    }

    @Override
    protected Response<JSONArray> parseNetworkResponse(NetworkResponse response) {
        try {
            String jsonString =
                    new String(response.data, HttpHeaderParser.parseCharset(response.headers));
            return Response.success(new JSONArray(jsonString),
                    HttpHeaderParser.parseCacheHeaders(response));
        } catch (UnsupportedEncodingException e) {
            return Response.error(new ParseError(e));
        } catch (JSONException je) {
            return Response.error(new ParseError(je));
        }
    }
}

这篇关于Android的凌空POST请求 - 解决方法JsonArrayRequest的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！

volley