android 判断网络连接的工具类

package com.way.util;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo.State;

public class NetUtil {
public static final int NETWORN_NONE = 0;
public static final int NETWORN_WIFI = 1;
public static final int NETWORN_MOBILE = 2;

public static int getNetworkState(Context context) {
ConnectivityManager connManager = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);

// Wifi
State state = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI)
.getState();
if (state == State.CONNECTED || state == State.CONNECTING) {
return NETWORN_WIFI;
}

// 3G
state = connManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE)
.getState();
if (state == State.CONNECTED || state == State.CONNECTING) {
return NETWORN_MOBILE;
}
return NETWORN_NONE;
}
}