檢查網址是否可達Android有超時響應

Question

我有寫功能，檢查地址是否可達或不，我的問題是，當響應速度慢或進入超時它凍結用戶界面長時間不接收響應或趕上例外。

我的功能是：

public static boolean isURLReachable() { 
    ConnectivityManager cm = (ConnectivityManager) App.getContext().getSystemService(Context.CONNECTIVITY_SERVICE); 
    NetworkInfo netInfo = cm.getActiveNetworkInfo(); 
    if (netInfo != null && netInfo.isConnected()) { 
     try { 
     StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build(); 
     StrictMode.setThreadPolicy(policy); 
     URL url = new URL(ConfigData.CHECK_IP); 
     HttpURLConnection urlc = (HttpURLConnection) url.openConnection(); 
         urlc.setConnectTimeout(TIME_OUT_CALL); 
         urlc.setReadTimeout(TIME_OUT_CALL); 
         urlc.connect(); 
         if (urlc.getResponseCode() == 200) {  // 200 = "OK" code (http connection is fine). 
          return true; 
         } else { 
          return false; 
         } 
        } catch (MalformedURLException e1) { 
         return false; 
        } 
        catch (java.net.SocketTimeoutException e) { 
         return false; 
        } catch (IOException e) { 
         return false; 
        } 
       } 
       return false; 
      } 

有一種辦法不阻止用戶界面？

Answer 1

您可以使用插座進行此項：

public static boolean isURLReachable() { 
    final URL url = new URL("your url here"); 

    final Socket socket = new Socket(); 
          socket.setSoTimeout(200); 
          socket.connect(new InetSocketAddress(url.getHost(),url.getPort()),200); 
        isConect =socket.isConnected(); 
        socket.close(); 
      return isConect; 
} 


where 200 is the required timeout.