Android Internet连接检查更好的方法 [英] Android Internet connectivity check better method

问题描述

根据Android开发者网站， 确定并监视连接状态 ，我们可以检查互联网是否处于活动状态.但是，即使仅连接了Wi-Fi且没有Internet(通知有Internet连接)，此方法也无法正常工作.

According to the Android developer site, Determining and Monitoring the Connectivity Status, we can check there is an active Internet connection. But this is not working if even only Wi-Fi is connected and not Internet available (it notifies there is an Internet connection).

现在，我对网站进行ping操作，并检查Internet连接是否可用.而且此方法需要更多的处理时间.有没有比这更好的方法来检查Internet连接，从而避免ping地址的时间延迟?

Now I ping a website and check whether Internet connections are available or not. And this method needs some more processing time. Is there a better method for checking Internet connectivity than this to avoid the time delay in ping the address?

推荐答案

尝试一下:

这真的很简单而且快捷:

It's really simple and fast:

public boolean isInternetAvailable(String address, int port, int timeoutMs) {
    try {
        Socket sock = new Socket();
        SocketAddress sockaddr = new InetSocketAddress(address, port);

        sock.connect(sockaddr, timeoutMs); // This will block no more than timeoutMs
        sock.close();

        return true;

    } catch (IOException e) { return false; }
}

然后在任何要检查的地方都使用此:

Then wherever you want to check just use this:

if (isInternetAvailable("8.8.8.8", 53, 1000)) {
     // Internet available, do something
} else {
     // Internet not available
}

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