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，但它没有返回任何内容。我试着在网上找一些例子，但结果发现它们可能已经过时了(onSuccess方法有不同的参数)。我试着让我的代码适应这个例子，我得到的是:

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json格式的url，但"AllData"仍然为空。如何解决这个问题?

Answer 1

你在需要JsonHttpResponseHandler的地方得到了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();
            }
        });