NetUtils.java

package party.danyang.nationalgeographic.utils;

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

/**
 * Created by dream on 16-7-28.
 */
public class NetUtils {
    public static boolean isWiFi(Context cxt) {
        if (!isConnected(cxt)) {
            return false;
        }
        ConnectivityManager cm = (ConnectivityManager) cxt.getSystemService(Context.CONNECTIVITY_SERVICE);
        // wifi的状态：ConnectivityManager.TYPE_WIFI
        // 3G的状态：ConnectivityManager.TYPE_MOBILE
        return cm.getActiveNetworkInfo().getType() == ConnectivityManager.TYPE_WIFI;
    }

    public static boolean isConnected(Context context) {
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo info = cm.getActiveNetworkInfo();
        if (info != null && info.isConnected()) {
            if (info.getState() == NetworkInfo.State.CONNECTED) {
                return true;
            }
        }
        return false;
    }

}