Android: AsyncTask to make an HTTP GET Request?

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失恋的感觉
失恋的感觉 2020-11-27 19:46

I\'m new to Android development. My question is, do I use AsyncTask in order to make an HTTP GET request (JSON response)? Is this correct? Does anyone know where I can see a

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  •  感情败类
    2020-11-27 20:27

    Check this out LINK and emaple from google this one good too

    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.InputStreamReader;
    import java.io.UnsupportedEncodingException;
    import org.apache.http.HttpEntity;
    import org.apache.http.HttpResponse;
    import org.apache.http.client.ClientProtocolException;
    import org.apache.http.client.methods.HttpPost;
    import org.apache.http.impl.client.DefaultHttpClient;
    import org.json.JSONException;
    import org.json.JSONObject;
    import android.util.Log;
    public class JSONParser {
      static InputStream is = null;
      static JSONObject jObj = null;
      static String json = "";
      // constructor
      public JSONParser() {
      }
      public JSONObject getJSONFromUrl(String url) {
        // Making HTTP request
        try {
          // defaultHttpClient
          DefaultHttpClient httpClient = new DefaultHttpClient();
          HttpPost httpPost = new HttpPost(url);
          HttpResponse httpResponse = httpClient.execute(httpPost);
          HttpEntity httpEntity = httpResponse.getEntity();
          is = httpEntity.getContent();
        } catch (UnsupportedEncodingException e) {
          e.printStackTrace();
        } catch (ClientProtocolException e) {
          e.printStackTrace();
        } catch (IOException e) {
          e.printStackTrace();
        }
        try {
          BufferedReader reader = new BufferedReader(new InputStreamReader(
              is, "iso-8859-1"), 8);
          StringBuilder sb = new StringBuilder();
          String line = null;
          while ((line = reader.readLine()) != null) {
            sb.append(line + "n");
          }
          is.close();
          json = sb.toString();
        } catch (Exception e) {
          Log.e("Buffer Error", "Error converting result " + e.toString());
        }
        // try parse the string to a JSON object
        try {
          jObj = new JSONObject(json);
        } catch (JSONException e) {
          Log.e("JSON Parser", "Error parsing data " + e.toString());
        }
        // return JSON String
        return jObj;
      }
    }
    

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