NetWorkUtil.java

package com.base.util;

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

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class NetWorkUtil {

    /**
     * 检测网络是否连接
     */
    public static boolean isNetConnected(Context context) {
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        if (cm != null) {
            NetworkInfo[] infos = cm.getAllNetworkInfo();
            if (infos != null) {
                for (NetworkInfo ni : infos) {
                    if (ni.isConnected()) {
                        return true;
                    }
                }
            }
        }
        return false;
    }

    /**
     * 检测wifi是否连接
     */
    public static boolean isWifiConnected(Context context) {
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        if (cm != null) {
            NetworkInfo networkInfo = cm.getActiveNetworkInfo();
            if (networkInfo != null && networkInfo.getType() == ConnectivityManager.TYPE_WIFI) {
                return true;
            }
        }
        return false;
    }

    /**
     * 检测3G是否连接
     */
    public static boolean is3gConnected(Context context) {
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        if (cm != null) {
            NetworkInfo networkInfo = cm.getActiveNetworkInfo();
            if (networkInfo != null && networkInfo.getType() == ConnectivityManager.TYPE_MOBILE) {
                return true;
            }
        }
        return false;
    }

    /**
     * 判断网址是否有效
     */
    public static boolean isLinkAvailable(String link) {
        Pattern pattern = Pattern.compile("^(http://|https://)?((?:[A-Za-z0-9]+-[A-Za-z0-9]+|[A-Za-z0-9]+)\\.)+([A-Za-z]+)[/\\?\\:]?.*$", Pattern.CASE_INSENSITIVE);
        Matcher matcher = pattern.matcher(link);
        if (matcher.matches()) {
            return true;
        }
        return false;
    }

}