Android如何判断网络状态

在Android版本6.0之前只能使用NetworkInfo获取网络状态

6.0之后NetworkInfo被弃用，应当使用Network来获取

public class NetWorkStateUtils {
    private final static int NO_NETWORK = 0;
    private final static int NETWORK_WIFI = 1;
    private final static int NETWORK_MOBILE = 2;

    public static int networkConnected(Context context) {
        ConnectivityManager mConnectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        //Android版本在6.0之前只能使用NetworkInfo获取网络状态
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M){
            if (mConnectivityManager != null) {
                NetworkInfo mWiFiNetworkInfo = mConnectivityManager.getActiveNetworkInfo();
                if (mWiFiNetworkInfo != null) {
                    //WIFI
                    if (mWiFiNetworkInfo.getType() == ConnectivityManager.TYPE_WIFI) {
                        return NETWORK_WIFI;
                    }
                    //移动数据
                    else if (mWiFiNetworkInfo.getType() == ConnectivityManager.TYPE_MOBILE) {
                        return NETWORK_MOBILE;
                    }
                }
            }
        }else {
            if (mConnectivityManager != null) {
                Network networks = mConnectivityManager.getActiveNetwork();
                NetworkCapabilities networkCapabilities = mConnectivityManager.getNetworkCapabilities(networks);
                if (networkCapabilities != null) {
                    //WIFI
                    if (networkCapabilities.hasTransport(NetworkCapabilities.TRANSPORT_WIFI)) {
                        return NETWORK_WIFI;
                    }
                    //移动数据
                    else if (networkCapabilities.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR)) {
                        return NETWORK_MOBILE;
                    }
                }
            }
        }
        //无网络
        return NO_NETWORK;
    }
}