int count = 0;

 

while (count < 5) {

 

try {

 

URL myUrl = new URL("HTTP://www.google.com");

 

HttpURLConnection myConnection =

 

(HttpURLConnection) myUrl.openConnection();

 

myConnection.setConnectTimeout(5000);

 

int state = myConnection.getResponseCode();

 

if (state == 200) {

 

Log.d("gill","the address is available!");

 

}

 

break;

 

} catch (Exception ex) {

 

count = count + 1;

 

}

 

Log.d("gill","the address is unavailable!");

 

}

 

getResponseCode() will return:

 

200 : connect normally 404 : can’t connect -1 : can’t detect the result

 

設定setConnectTimeout(5000)表示連線5秒還沒成功就放棄。
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