问题描述

我用的是isReachable，但是没用，我用的是ConnectivityManager和getNetworkInfo；实际上这只适用于检查我是否连接到互联网......

I used isReachable, but it didn't work, and I used ConnectivityManager and getNetworkInfo; actually this works only to check if I am connected to the Internet...

但问题是我想检查我是否可以访问 Internet，所以我想 ping 一个网站以检查是否有响应.

But the issue is I want to check if I can access the Internet so I want to ping a website to check if there is a response.

推荐答案

对于get方法:

private void executeReq(URL urlObject) throws IOException{
    HttpURLConnection conn = null;

    conn = (HttpURLConnection) urlObject.openConnection();
    conn.setReadTimeout(100000); //Milliseconds
    conn.setConnectTimeout(150000); //Milliseconds
    conn.setRequestMethod("GET");
    conn.setDoInput(true);

    // Start connect
    conn.connect();
    String response = convertStreamToString(conn.getInputStream());
    Log.d("Response:", response);
}

你可以调用它

try {
    String parameters = ""; //
    URL url = new URL("http://alefon.com" + parameters);
    executeReq(url);
}
catch(Exception e){
    //Error
}

要检查互联网连接，请使用:

To check Internet connectivity, use:

private void checkInternetConnection() {
    ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo ni = cm.getActiveNetworkInfo();
    if (null == ni)
        Toast.makeText(this, "no internet connection", Toast.LENGTH_LONG).show();
    else {
         Toast.makeText(this, "Internet Connect is detected .. check access to sire", Toast.LENGTH_LONG).show();
         //Use the code above...
    }
}

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