如何检查sim/WIFI网络是否可用但不工作。如何验证？在android中

使用连接管理器

final ConnectivityManager connMgr = (ConnectivityManager) this .getSystemService(Context.CONNECTIVITY_SERVICE); 
final android.net.NetworkInfo wifi = connMgr .getNetworkInfo(ConnectivityManager.TYPE_WIFI); 
final android.net.NetworkInfo mobile = connMgr .getNetworkInfo(ConnectivityManager.TYPE_MOBILE); 
if (wifi.isAvailable()) { 
    return true; 
} 
else if (mobile.isAvailable()) { 
    return true; 
} 
else { 
    return false; 
}

---

可能重复的简单尝试请求一些网站。

ConnectivityManager conMgr = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);

if ( conMgr.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).getState() == NetworkInfo.State.CONNECTED 
|| conMgr.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState() == NetworkInfo.State.CONNECTED ) {

// you are online

}
else if ( 
conMgr.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).getState() == NetworkInfo.State.DISCONNECTED 
|| conMgr.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState() == NetworkInfo.State.DISCONNECTED) {

// you are not online
}