StringUtils.java
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package com.share.mvpsdk.utils;
import android.text.TextUtils;
import android.util.Base64;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Created by Horrarndoo on 2017/4/5.
* 字符串工具类
*/
public class StringUtils {
/**
* 判断字符串是否有值，如果为null或者是空字符串或者只有空格或者为"null"字符串，则返回true，否则则返回false
*/
public static boolean isEmpty(String value) {
return !(value != null && !"".equalsIgnoreCase(value.trim())
&& !"null".equalsIgnoreCase(value.trim()));
}
/**
* 判断字符串是否是邮箱
*
* @param email email
* @return 字符串是否是邮箱
*/
public static boolean isEmail(String email) {
String str = "^([a-zA-Z0-9_\\-\\.]+)@((\\[[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.)|(" +
"([a-zA-Z0-9\\-]+\\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\\]?)$";
Pattern p = Pattern.compile(str);
Matcher m = p.matcher(email);
return m.matches();
}
/**
* 判断手机号字符串是否合法
*
* @param phoneNumber 手机号字符串
* @return 手机号字符串是否合法
*/
public static boolean isPhoneNumberValid(String phoneNumber) {
boolean isValid = false;
String expression = "^1[3|4|5|7|8]\\d{9}$";
CharSequence inputStr = phoneNumber;
Pattern pattern = Pattern.compile(expression);
Matcher matcher = pattern.matcher(inputStr);
if (matcher.matches()) {
isValid = true;
}
return isValid;
}
/**
* 判断手机号字符串是否合法
*
* @param areaCode 区号
* @param phoneNumber 手机号字符串
* @return 手机号字符串是否合法
*/
public static boolean isPhoneNumberValid(String areaCode, String phoneNumber) {
if (TextUtils.isEmpty(phoneNumber)) {
return false;
}
if (phoneNumber.length() < 5) {
return false;
}
if (TextUtils.equals(areaCode, "+86") || TextUtils.equals(areaCode, "86")) {
return isPhoneNumberValid(phoneNumber);
}
boolean isValid = false;
String expression = "^[0-9]*$";
CharSequence inputStr = phoneNumber;
Pattern pattern = Pattern.compile(expression);
Matcher matcher = pattern.matcher(inputStr);
if (matcher.matches()) {
isValid = true;
}
return isValid;
}
/**
* 判断字符串是否是手机号格式
*
* @param areaCode 区号
* @param phoneNumber 手机号字符串
* @return 字符串是否是手机号格式
*/
public static boolean isPhoneFormat(String areaCode, String phoneNumber) {
if (TextUtils.isEmpty(phoneNumber)) {
return false;
}
if (phoneNumber.length() < 7) {
return false;
}
boolean isValid = false;
String expression = "^[0-9]*$";
CharSequence inputStr = phoneNumber;
Pattern pattern = Pattern.compile(expression);
Matcher matcher = pattern.matcher(inputStr);
if (matcher.matches()) {
isValid = true;
}
return isValid;
}
/**
* 判断字符串是否为纯数字
*
* @param str 字符串
* @return 是否纯数字
*/
public static boolean isNumber(String str) {
for (int i = 0; i < str.length(); i++) {
if (!Character.isDigit(str.charAt(i))) {
return false;
}
}
return true;
}
private final static String appSecret = "f71467cfd98d";
public static String getSign(){
String sign = "";
try {
String clientid = MD5(System.currentTimeMillis() + new int[(int) (Math.random() * 100)].toString());
sign = "Basic " + Base64.encodeToString((clientid + ":" + MD5(clientid + appSecret)).getBytes("ASCII"), Base64.NO_WRAP);
} catch (Exception err) {
err.printStackTrace();
}
return sign;
}
public static String MD5(String str) {
try {
java.security.MessageDigest md = java.security.MessageDigest.getInstance("MD5");
byte[] array = md.digest(str.getBytes("utf-8"));
StringBuffer sb = new StringBuffer();
for (int i = 0; i < array.length; ++i) {
sb.append(Integer.toHexString((array[i] & 0xFF) | 0x100).substring(1, 3));
}
return sb.toString().toUpperCase();
} catch (Exception e) {
}
return "";
}
}