android - 使用 Loopj 获取请求

Question

我需要向包含 JSON 数据的 url 发出 GET 请求并尝试使用 Loopj 库，但它什么也没返回。我试图在 Internet 上查找示例，但结果证明它们可能已过时（onSuccess 方法具有不同的参数）。我试图让我的代码适应那个例子和我得到的：

String AllData=""; AsyncHttpClient client = new AsyncHttpClient();
    client.get("wantedUrl", new AsyncHttpResponseHandler() {
        @Override
        public void onSuccess(int statusCode, Header[] headers, byte[] responseBody) {
            for (byte aResponseBody : responseBody) {
                AllData += aResponseBody;
            }

        }
        @Override
        public void onFailure(int statusCode, Header[] headers, byte[] responseBody, Throwable error) {
            Toast.makeText(getApplicationContext(),"We got an error",Toast.LENGTH_SHORT).show();
        }
    });

"wantedUrl" 是带有 json 的 url，但 "AllData" 保持为空。如何解决？

Answer 1

您在需要JsonHttpResponseHandler 的地方收到AsyncHttpResponseHandler 回调。使用下面的代码让事情走上正轨。

 String AllData=""; AsyncHttpClient client = new AsyncHttpClient();
        client.get("wantedUrl", new JsonHttpResponseHandler(){
            @Override
            public void onSuccess(int statusCode, Header[] headers, JSONArray response) {
                super.onSuccess(statusCode, headers, response);

                //Here response will be received in form of JSONArray
            }

            @Override
            public void onSuccess(int statusCode, Header[] headers, JSONObject response) {
                super.onSuccess(statusCode, headers, response);

                //Here response will be received in form of JSONObject
            }

            @Override
            public void onFailure(int statusCode, Header[] headers, String responseString, Throwable throwable) {
                super.onFailure(statusCode, headers, responseString, throwable);
                Toast.makeText(getApplicationContext(), "We got an error", Toast.LENGTH_SHORT).show();
            }
        });