如何知道Android是否已连接到WiFi或以太网？ [英] How to know whether Android is connected to WiFi or ethernet?

问题描述

如何知道我是否已连接到Android中的WiFi或以太网？
在Android OS中会收到有关图标
的通知

How to know whether I'm connected to WiFi or ethernet in Android? In Android OS this is notified for thess icons

是否存在以编程方式了解它的方法？

Does it exist a way to know it programmatically?

推荐答案

感谢大家

只是为了避免出现异常（无网络情况）。我共享测试过的代码。

Just for avoid Exceptions (no network case). I share my tested code.

private Boolean isNetworkAvailable() {
    ConnectivityManager connectivityManager 
          = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
    return activeNetworkInfo != null && activeNetworkInfo.isConnectedOrConnecting();
}

public Boolean isWifiConnected(){
    if(isNetworkAvailable()){
        ConnectivityManager cm 
        = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
        return (cm.getActiveNetworkInfo().getType() == ConnectivityManager.TYPE_WIFI);
    }
    return false;
}

public Boolean isEthernetConnected(){
    if(isNetworkAvailable()){
        ConnectivityManager cm 
        = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
        return (cm.getActiveNetworkInfo().getType() == ConnectivityManager.TYPE_ETHERNET);
    }
    return false;
}

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