Util.java

package com.stone.util;

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

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

/**
 * 工具类
 * 
 * @date 2014-5-9
 * @author Stone
 */
public class Util {

	/**
	 * 判断电话号码是否有效
	 * 
	 * @param phoneNumber
	 * @return true 有效 / false 无效
	 */
	public static boolean isPhoneNumberValid(String phoneNumber) {

		boolean isValid = false;

		String expression = "((^(13|15|18)[0-9]{9}$)|(^0[1,2]{1}\\d{1}-?\\d{8}$)|(^0[3-9] {1}\\d{2}-?\\d{7,8}$)|(^0[1,2]{1}\\d{1}-?\\d{8}-(\\d{1,4})$)|(^0[3-9]{1}\\d{2}-? \\d{7,8}-(\\d{1,4})$))";
		CharSequence inputStr = phoneNumber;

		Pattern pattern = Pattern.compile(expression);
		Matcher matcher = pattern.matcher(inputStr);

		if (matcher.matches()) {
			isValid = true;
		}
		return isValid;
	}
	
	/**
	 * 判断邮箱地址是否有效
	 * 
	 * @param email
	 * @return true 有效 / false 无效
	 */
	public static boolean isEmailValid(String email)
	{
		String regex = "\\w+([-+.]\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*";
        return email.matches(regex);
	}

	// 判断网络是否连接
	public static boolean isNetworkConnected(Context context) {
		if (context != null) {
			ConnectivityManager mConnectivityManager = (ConnectivityManager) context
					.getSystemService(Context.CONNECTIVITY_SERVICE);
			NetworkInfo mNetworkInfo = mConnectivityManager
					.getActiveNetworkInfo();
			if (mNetworkInfo != null) {
				return mNetworkInfo.isAvailable();
			}
		}
		return false;
	}

}