如何在android中连接wifi网络的情况下检查Internet是否处于活动状态 [英] How to check if Internet is active with wifi network connected in android

问题描述

如何在android中连接的WiFi网络上自动检查互联网是否处于活动状态?我可以检查是否已启用 wifi 或是否已连接 wifi 网络，但我不确定如何检查互联网是否已连接?这可能吗?

How to check automatically if internet is active on the WiFi network connected in android? I can check if wifi is enabled or if wifi network is connected but I am not sure how to check if internet is connected? Is this possible?

private boolean connectionAvailable() 
{
    boolean connected = false;
    ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    if (connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState() == NetworkInfo.State.CONNECTED) {
        //we are connected to a network
        connected = true;
    }
    return connected;
}

以上检查是否启用 wifi/wifi 连接但未连接互联网.

Above checks on wifi enabled/wifi connected or not but not internet.

推荐答案

public boolean isOnline() {
    ConnectivityManager cm =
        (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo netInfo = cm.getActiveNetworkInfo();
    if (netInfo != null && netInfo.isConnectedOrConnecting()) {
        return true;
    }
    return false;
}

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