Android 在Activity类中进行Http请求时出现异常

Question

Answer 1

1. public class HttpActivity extends Activity {
   
       @Override
       protected void onCreate(Bundle savedInstanceState) {
           super.onCreate(savedInstanceState);
           final EditText editText  = new EditText(this);
           Button button = new Button(this);
           button.setText("登录");
           button.setOnClickListener(new OnClickListener() {
               @Override
               public void onClick(View v) {
                   httpGet(editText); 
               }
   
           });
       }
   
       private void httpGet(final EditText editText) {
           try {
               HttpClient httpClient = new DefaultHttpClient();
               String username = "tom";
               String password = "123";
               String uri = "http://www.baidu.com?username=" + URLEncoder.encode(username,"utf-8") + "&password="+ URLEncoder.encode(password,"utf-8");
               HttpGet httpGet = new HttpGet(uri);
               HttpResponse response = httpClient.execute(httpGet);
               if (response.getStatusLine().getStatusCode() == 200) {
                   InputStream inputStream = response.getEntity().getContent();
                   String result = NetUtils.parseStream(inputStream);
                   editText.setText(result);
               }
           } catch (Exception e) {
               e.printStackTrace();
           }
       }
   }