Java 在LogCat中显示JSON Google搜索

我正在尝试从URL获取搜索结果

并使用log.v将其显示到LogCat中

问题是，程序没有在LogCat中显示搜索结果，而是一直不停地运行，我在LogCat中看到的是一个无休止的列表

11-19 15:51:11.256:D/dalvikvm1251:GC_FOR_ALLOC freed 480K，14%free 6651K/7688K，暂停8ms，总计8ms

11-19 15:51:11.264:D/dalvikvm1251:GC_FOR_ALLOC freed 480K，14%free 6651K/7688K，暂停8ms，总计8ms

11-19 15:51:11.272:D/dalvikvm1251:GC_FOR_ALLOC freed 480K，14%free 6651K/7688K，暂停5ms，总计5ms

11-19 15:51:11.272:D/dalvikvm1251:GC_FOR_ALLOC freed 480K，14%free 6651K/7688K，暂停4ms，总计5ms

11-19 15:51:11.324:D/dalvikvm1251:GC_FOR_ALLOC freed 480K，14%free 6651K/7688K，暂停45毫秒，总计45毫秒

11-19 15:51:11.332:D/dalvikvm1251:GC_FOR_ALLOC freed 480K，14%free 6651K/7688K，暂停8ms，总计8ms

11-19 15:51:11.400:D/dalvikvm1251:GC_FOR_ALLOC freed 480K，14%free 6651K/7688K，暂停23ms，总计23ms

11-19 15:51:11.424:D/dalvikvm1251:GC_FOR_ALLOC freed 480K，14%free 6651K/7688K，暂停2ms，总计2ms

11-19 15:51:11.464:D/dalvikvm1251:GC_FOR_ALLOC freed 480K，14%free 6651K/7688K，暂停26ms，总计26ms

在我在模拟器中关闭应用程序之前，这不会停止并继续

这是我的密码

公共类MainActivity扩展了活动{

}

---

尝试使用此代码进行网络呼叫，它至少可以从internet获取数据，然后将其发布到LogCat中

public class GetSearchData extends AsyncTask<Void,Void,Void> {

        @Override
        protected Void doInBackground(Void... params) {
            String url = "https://ajax.googleapis.com/ajax/services/search/web?v=1.0&q=JSON";
            HttpClient httpClient = new DefaultHttpClient();
            HttpGet httpGet = new HttpGet(url);
            try{
                HttpResponse httpResponse = httpClient.execute(httpGet);
                String responseData = inputStreamToString(httpResponse.getEntity().getContent()).toString();
                Log.v("OUTPUT", responseData);

                JSONObject jsonObject= new JSONObject(responseData);
                JSONObject jsonObject2= jsonObject.getJSONObject("responseData");
                JSONArray jsonArray= jsonObject2.getJSONArray("results");

                for (int i = 0; i < jsonArray.length(); i++){
                   JSONObject results = jsonArray.getJSONObject(i);
                   String title = results.getString("title");
                   Log.v(TAG, "Result "+i+" : "+title);
                }

            } catch (IOException e){
                e.printStackTrace();
            } catch (JSONException e){
                e.printStackTrace();
            }
            return null;
        }

        public static StringBuilder inputStreamToString(InputStream is){
            String line;
            StringBuilder sb = new StringBuilder();
            BufferedReader rd = new BufferedReader(new InputStreamReader(is));
            try {
                while ((line = rd.readLine()) != null) {
                    sb.append(line);
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
            return sb;
        }
    }

---

你能发布完整的代码吗，即你在哪里调用execute？@reactivemobile Ya对不起。我现在发布了完整的代码。这些日志消息来自垃圾收集器，它们与您的异步任务无关。请尝试按标记筛选日志消息，看看会出现什么情况。@RogueBaneling当我使用标记筛选日志消息时，什么也不显示。有时，我在让LogCat正常工作时会遇到问题。请尝试在您确信工作正常的地方使用Log.v，即onCreate，这样您就可以判断日志消息是否正确打印。非常感谢您的帮助。这个错误是因为一些非常愚蠢的事情：'我不知何故在while break条件中编写了responseCode==-1，而不是nextcharacter==-1。现在我的代码工作了。再次感谢您，很抱歉给您带来麻烦。如果您正在通过LogCat查看大量JSON，您可能会发现它们很有用。当您双击消息时，它会很好地打印JSON。[完全披露，我是LogRabbit的创造者]

public class GetSearchData extends AsyncTask<Void,Void,Void> {

        @Override
        protected Void doInBackground(Void... params) {
            String url = "https://ajax.googleapis.com/ajax/services/search/web?v=1.0&q=JSON";
            HttpClient httpClient = new DefaultHttpClient();
            HttpGet httpGet = new HttpGet(url);
            try{
                HttpResponse httpResponse = httpClient.execute(httpGet);
                String responseData = inputStreamToString(httpResponse.getEntity().getContent()).toString();
                Log.v("OUTPUT", responseData);

                JSONObject jsonObject= new JSONObject(responseData);
                JSONObject jsonObject2= jsonObject.getJSONObject("responseData");
                JSONArray jsonArray= jsonObject2.getJSONArray("results");

                for (int i = 0; i < jsonArray.length(); i++){
                   JSONObject results = jsonArray.getJSONObject(i);
                   String title = results.getString("title");
                   Log.v(TAG, "Result "+i+" : "+title);
                }

            } catch (IOException e){
                e.printStackTrace();
            } catch (JSONException e){
                e.printStackTrace();
            }
            return null;
        }

        public static StringBuilder inputStreamToString(InputStream is){
            String line;
            StringBuilder sb = new StringBuilder();
            BufferedReader rd = new BufferedReader(new InputStreamReader(is));
            try {
                while ((line = rd.readLine()) != null) {
                    sb.append(line);
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
            return sb;
        }
    }