android 工具类
2017-03-12 本文已影响83人
liby06
为什写这个文章呢，突然看到简书上中奖了，可是要一篇公开的文章才可以领取。挺好奇这个幸运奖是什么，对于我这个二十多年中奖绝缘体还是挺有吸引力的。可是自己没有什么才华，收集了一些工具类，按需自取。
ZIP文件工具类
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipException;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;
/**
* ZIP文件工具类
*/
public class ZipUtils {
private static final int BUFF_SIZE = 1024 * 1024; // 1M Byte
/**
* 批量压缩文件（夹）
*
* @param resFileList
* 要压缩的文件（夹）列表
* @param zipFile
* 生成的压缩文件
* @throws IOException
* 当压缩过程出错时抛出
*/
public static void zipFiles(Collection<File> resFileList, File zipFile)
throws IOException {
ZipOutputStream zipout = new ZipOutputStream(new BufferedOutputStream(
new FileOutputStream(zipFile), BUFF_SIZE));
for (File resFile : resFileList) {
zipFile(resFile, zipout, "");
}
zipout.close();
}
/**
* 批量压缩文件（夹）
*
* @param resFileList
* 要压缩的文件（夹）列表
* @param zipFile
* 生成的压缩文件
* @param comment
* 压缩文件的注释
* @throws IOException
* 当压缩过程出错时抛出
*/
public static void zipFiles(Collection<File> resFileList, File zipFile,
String comment) throws IOException {
ZipOutputStream zipout = new ZipOutputStream(new BufferedOutputStream(
new FileOutputStream(zipFile), BUFF_SIZE));
for (File resFile : resFileList) {
zipFile(resFile, zipout, "");
}
zipout.setComment(comment);
zipout.close();
}
/**
* 解压缩一个文件
*
* @param zipFile
* 压缩文件
* @param folderPath
* 文件解压到指定目标路径
* @throws IOException
* 当解压缩过程出错时抛出
*/
public static void upZipFile(File zipFile, String folderPath)
throws ZipException, IOException {
File desDir = new File(folderPath);
if (!desDir.exists()) {
desDir.mkdirs();
}
ZipFile zf = new ZipFile(zipFile);
for (Enumeration<?> entries = zf.entries(); entries.hasMoreElements();) {
ZipEntry entry = ((ZipEntry) entries.nextElement());
InputStream in = zf.getInputStream(entry);
String str = folderPath + File.separator + entry.getName();
str = new String(str.getBytes("8859_1"), "GB2312");
File desFile = new File(str);
if (!desFile.exists()) {
File fileParentDir = desFile.getParentFile();
if (!fileParentDir.exists()) {
fileParentDir.mkdirs();
}
desFile.createNewFile();
}
OutputStream out = new FileOutputStream(desFile);
byte buffer[] = new byte[BUFF_SIZE];
int realLength;
while ((realLength = in.read(buffer)) > 0) {
out.write(buffer, 0, realLength);
}
in.close();
out.close();
}
}
/**
* 解压文件名包含传入文字的文件
*
* @param zipFile
* 压缩文件
* @param folderPath
* 目标文件夹
* @param nameContains
* 传入的文件匹配名
* @throws ZipException
* 压缩格式有误时抛出
* @throws IOException
* IO错误时抛出
*/
public static ArrayList<File> upZipSelectedFile(File zipFile,
String folderPath, String nameContains) throws ZipException,
IOException {
ArrayList<File> fileList = new ArrayList<File>();
File desDir = new File(folderPath);
if (!desDir.exists()) {
desDir.mkdir();
}
ZipFile zf = new ZipFile(zipFile);
for (Enumeration<?> entries = zf.entries(); entries.hasMoreElements();) {
ZipEntry entry = ((ZipEntry) entries.nextElement());
if (entry.getName().contains(nameContains)) {
InputStream in = zf.getInputStream(entry);
String str = folderPath + File.separator + entry.getName();
str = new String(str.getBytes("8859_1"), "GB2312");
// str.getBytes("GB2312"),"8859_1" 输出
// str.getBytes("8859_1"),"GB2312" 输入
File desFile = new File(str);
if (!desFile.exists()) {
File fileParentDir = desFile.getParentFile();
if (!fileParentDir.exists()) {
fileParentDir.mkdirs();
}
desFile.createNewFile();
}
OutputStream out = new FileOutputStream(desFile);
byte buffer[] = new byte[BUFF_SIZE];
int realLength;
while ((realLength = in.read(buffer)) > 0) {
out.write(buffer, 0, realLength);
}
in.close();
out.close();
fileList.add(desFile);
}
}
return fileList;
}
/**
* 获得压缩文件内文件列表
*
* @param zipFile
* 压缩文件
* @return 压缩文件内文件名称
* @throws ZipException
* 压缩文件格式有误时抛出
* @throws IOException
* 当解压缩过程出错时抛出
*/
public static ArrayList<String> getEntriesNames(File zipFile)
throws ZipException, IOException {
ArrayList<String> entryNames = new ArrayList<String>();
Enumeration<?> entries = getEntriesEnumeration(zipFile);
while (entries.hasMoreElements()) {
ZipEntry entry = ((ZipEntry) entries.nextElement());
entryNames.add(new String(getEntryName(entry).getBytes("GB2312"),
"8859_1"));
}
return entryNames;
}
/**
* 获得压缩文件内压缩文件对象以取得其属性
*
* @param zipFile
* 压缩文件
* @return 返回一个压缩文件列表
* @throws ZipException
* 压缩文件格式有误时抛出
* @throws IOException
* IO操作有误时抛出
*/
public static Enumeration<?> getEntriesEnumeration(File zipFile)
throws ZipException, IOException {
ZipFile zf = new ZipFile(zipFile);
return zf.entries();
}
/**
* 取得压缩文件对象的注释
*
* @param entry
* 压缩文件对象
* @return 压缩文件对象的注释
* @throws UnsupportedEncodingException
*/
public static String getEntryComment(ZipEntry entry)
throws UnsupportedEncodingException {
return new String(entry.getComment().getBytes("GB2312"), "8859_1");
}
/**
* 取得压缩文件对象的名称
*
* @param entry
* 压缩文件对象
* @return 压缩文件对象的名称
* @throws UnsupportedEncodingException
*/
public static String getEntryName(ZipEntry entry)
throws UnsupportedEncodingException {
return new String(entry.getName().getBytes("GB2312"), "8859_1");
}
/**
* 压缩文件
*
* @param resFile
* 需要压缩的文件（夹）
* @param zipout
* 压缩的目的文件
* @param rootpath
* 压缩的文件路径
* @throws FileNotFoundException
* 找不到文件时抛出
* @throws IOException
* 当压缩过程出错时抛出
*/
private static void zipFile(File resFile, ZipOutputStream zipout,
String rootpath) throws FileNotFoundException, IOException {
rootpath = rootpath
+ (rootpath.trim().length() == 0 ? "" : File.separator)
+ resFile.getName();
rootpath = new String(rootpath.getBytes("8859_1"), "GB2312");
if (resFile.isDirectory()) {
File[] fileList = resFile.listFiles();
for (File file : fileList) {
zipFile(file, zipout, rootpath);
}
} else {
byte buffer[] = new byte[BUFF_SIZE];
BufferedInputStream in = new BufferedInputStream(
new FileInputStream(resFile), BUFF_SIZE);
zipout.putNextEntry(new ZipEntry(rootpath));
int realLength;
while ((realLength = in.read(buffer)) != -1) {
zipout.write(buffer, 0, realLength);
}
in.close();
zipout.flush();
zipout.closeEntry();
}
}
}
日志工具类
import android.util.Log;
public class TLog {
public static final String LOG_TAG = "custom";
public static boolean DEBUG = true;
public TLog() {
}
public static final void analytics(String log) {
if (DEBUG)
Log.d(LOG_TAG, log);
}
public static final void error(String log) {
if (DEBUG)
Log.e(LOG_TAG, "" + log);
}
public static final void log(String log) {
if (DEBUG)
Log.i(LOG_TAG, log);
}
public static final void log(String tag, String log) {
if (DEBUG)
Log.i(tag, log);
}
public static final void logv(String log) {
if (DEBUG)
Log.v(LOG_TAG, log);
}
public static final void warn(String log) {
if (DEBUG)
Log.w(LOG_TAG, log);
}
}
时间的工具类
import java.util.Date;
import java.util.TimeZone;
public class TimeZoneUtil {
/**
* 判断用户的设备时区是否为东八区（中国） 2014年7月31日
* @return
*/
public static boolean isInEasternEightZones() {
boolean defaultVaule = true;
if (TimeZone.getDefault() == TimeZone.getTimeZone("GMT+08"))
defaultVaule = true;
else
defaultVaule = false;
return defaultVaule;
}
/**
* 根据不同时区，转换时间 2014年7月31日
* @return
*/
public static Date transformTime(Date date, TimeZone oldZone, TimeZone newZone) {
Date finalDate = null;
if (date != null) {
int timeOffset = oldZone.getOffset(date.getTime())
- newZone.getOffset(date.getTime());
finalDate = new Date(date.getTime() - timeOffset);
}
return finalDate;
}
}
字符串操作工具包
import android.text.TextUtils;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;
import java.util.regex.Pattern;
/**
* 字符串操作工具包
*
*/
public class StringUtils {
private final static Pattern emailer = Pattern
.compile("\\w+([-+.]\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*");
private final static Pattern IMG_URL = Pattern
.compile(".*?(gif|jpeg|png|jpg|bmp)");
private final static Pattern URL = Pattern
.compile("^(https|http)://.*?$(net|com|.com.cn|org|me|)");
private final static ThreadLocal<SimpleDateFormat> dateFormater = new ThreadLocal<SimpleDateFormat>() {
@Override
protected SimpleDateFormat initialValue() {
return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
}
};
private final static ThreadLocal<SimpleDateFormat> dateFormater2 = new ThreadLocal<SimpleDateFormat>() {
@Override
protected SimpleDateFormat initialValue() {
return new SimpleDateFormat("yyyy-MM-dd");
}
};
private final static ThreadLocal<SimpleDateFormat> dateFormat3 = new ThreadLocal<SimpleDateFormat>() {
@Override
protected SimpleDateFormat initialValue() {
return new SimpleDateFormat("yyyy-MM-dd HH:mm");
}
};
/**
* 将字符串转位日期类型
*
* @param sdate
* @return
*/
public static Date toDate(String sdate) {
return toDate(sdate, dateFormater.get());
}
public static Date toDate(String sdate, SimpleDateFormat dateFormater) {
try {
return dateFormater.parse(sdate);
} catch (Exception e) {
return null;
}
}
public static String getDateString(Date date) {
return dateFormater.get().format(date);
}
public static String getDateString(String sdate) {
return dateFormat3.get().format(toDate(sdate));
}
/**
* 以友好的方式显示时间
*
* @param sdate
* @return
*/
public static String friendly_time(String sdate) {
Date time = null;
if (TimeZoneUtil.isInEasternEightZones())
time = toDate(sdate);
else
time = TimeZoneUtil.transformTime(toDate(sdate),
TimeZone.getTimeZone("GMT+08"), TimeZone.getDefault());
if (time == null) {
return "Unknown";
}
String ftime = "";
Calendar cal = Calendar.getInstance();
// 判断是否是同一天
String curDate = dateFormater2.get().format(cal.getTime());
String paramDate = dateFormater2.get().format(time);
if (curDate.equals(paramDate)) {
int hour = (int) ((cal.getTimeInMillis() - time.getTime()) / 3600000);
if (hour == 0)
ftime = Math.max(
(cal.getTimeInMillis() - time.getTime()) / 60000, 1)
+ "分钟前";
else
ftime = hour + "小时前";
return ftime;
}
long lt = time.getTime() / 86400000;
long ct = cal.getTimeInMillis() / 86400000;
int days = (int) (ct - lt);
if (days == 0) {
int hour = (int) ((cal.getTimeInMillis() - time.getTime()) / 3600000);
if (hour == 0)
ftime = Math.max(
(cal.getTimeInMillis() - time.getTime()) / 60000, 1)
+ "分钟前";
else
ftime = hour + "小时前";
} else if (days == 1) {
ftime = "昨天";
} else if (days == 2) {
ftime = "前天 ";
} else if (days > 2 && days < 31) {
ftime = days + "天前";
} else if (days >= 31 && days <= 2 * 31) {
ftime = "一个月前";
} else if (days > 2 * 31 && days <= 3 * 31) {
ftime = "2个月前";
} else if (days > 3 * 31 && days <= 4 * 31) {
ftime = "3个月前";
} else {
ftime = dateFormater2.get().format(time);
}
return ftime;
}
public static String friendly_time2(String sdate) {
String res = "";
if (isEmpty(sdate))
return "";
String[] weekDays = {"星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"};
String currentData = StringUtils.getDataTime("MM-dd");
int currentDay = toInt(currentData.substring(3));
int currentMoth = toInt(currentData.substring(0, 2));
int sMoth = toInt(sdate.substring(5, 7));
int sDay = toInt(sdate.substring(8, 10));
int sYear = toInt(sdate.substring(0, 4));
Date dt = new Date(sYear, sMoth - 1, sDay - 1);
if (sDay == currentDay && sMoth == currentMoth) {
res = "今天 / " + weekDays[getWeekOfDate(new Date())];
} else if (sDay == currentDay + 1 && sMoth == currentMoth) {
res = "昨天 / " + weekDays[(getWeekOfDate(new Date()) + 6) % 7];
} else {
if (sMoth < 10) {
res = "0";
}
res += sMoth + "/";
if (sDay < 10) {
res += "0";
}
res += sDay + " / " + weekDays[getWeekOfDate(dt)];
}
return res;
}
/**
* 智能格式化
*/
public static String friendly_time3(String sdate) {
String res = "";
if (isEmpty(sdate))
return "";
Date date = StringUtils.toDate(sdate);
if (date == null)
return sdate;
SimpleDateFormat format = dateFormater2.get();
if (isToday(date.getTime())) {
format.applyPattern(isMorning(date.getTime()) ? "上午 hh:mm" : "下午 hh:mm");
res = format.format(date);
} else if (isYesterday(date.getTime())) {
format.applyPattern(isMorning(date.getTime()) ? "昨天 上午 hh:mm" : "昨天 下午 hh:mm");
res = format.format(date);
} else if (isCurrentYear(date.getTime())) {
format.applyPattern(isMorning(date.getTime()) ? "MM-dd 上午 hh:mm" : "MM-dd 下午 hh:mm");
res = format.format(date);
} else {
format.applyPattern(isMorning(date.getTime()) ? "yyyy-MM-dd 上午 hh:mm" : "yyyy-MM-dd 下午 hh:mm");
res = format.format(date);
}
return res;
}
/**
* @return 判断一个时间是不是上午
*/
public static boolean isMorning(long when) {
android.text.format.Time time = new android.text.format.Time();
time.set(when);
int hour = time.hour;
return (hour >= 0) && (hour < 12);
}
/**
* @return 判断一个时间是不是今天
*/
public static boolean isToday(long when) {
android.text.format.Time time = new android.text.format.Time();
time.set(when);
int thenYear = time.year;
int thenMonth = time.month;
int thenMonthDay = time.monthDay;
time.set(System.currentTimeMillis());
return (thenYear == time.year)
&& (thenMonth == time.month)
&& (thenMonthDay == time.monthDay);
}
/**
* @return 判断一个时间是不是昨天
*/
public static boolean isYesterday(long when) {
android.text.format.Time time = new android.text.format.Time();
time.set(when);
int thenYear = time.year;
int thenMonth = time.month;
int thenMonthDay = time.monthDay;
time.set(System.currentTimeMillis());
return (thenYear == time.year)
&& (thenMonth == time.month)
&& (time.monthDay - thenMonthDay == 1);
}
/**
* @return 判断一个时间是不是今年
*/
public static boolean isCurrentYear(long when) {
android.text.format.Time time = new android.text.format.Time();
time.set(when);
int thenYear = time.year;
time.set(System.currentTimeMillis());
return (thenYear == time.year);
}
/**
* 获取当前日期是星期几<br>
*
* @param dt
* @return 当前日期是星期几
*/
public static int getWeekOfDate(Date dt) {
Calendar cal = Calendar.getInstance();
cal.setTime(dt);
int w = cal.get(Calendar.DAY_OF_WEEK) - 1;
if (w < 0)
w = 0;
return w;
}
/**
* 判断给定字符串时间是否为今日
*
* @param sdate
* @return boolean
*/
public static boolean isToday(String sdate) {
boolean b = false;
Date time = toDate(sdate);
Date today = new Date();
if (time != null) {
String nowDate = dateFormater2.get().format(today);
String timeDate = dateFormater2.get().format(time);
if (nowDate.equals(timeDate)) {
b = true;
}
}
return b;
}
/**
* 是否是相同的一天
* @param sDate1 sDate1
* @param sDate2 sDate2
* @return
*/
public static boolean isSameDay(String sDate1,String sDate2){
if(TextUtils.isEmpty(sDate1) || TextUtils.isEmpty(sDate2)){
return false;
}
boolean b = false;
Date date1 = toDate(sDate1);
Date date2 = toDate(sDate2);
if(date1!= null && date2 != null){
String d1 = dateFormater2.get().format(date1);
String d2 = dateFormater2.get().format(date2);
if (d1.equals(d2)) {
b = true;
}
}
return b;
}
/**
* 返回long类型的今天的日期
*
* @return
*/
public static long getToday() {
Calendar cal = Calendar.getInstance();
String curDate = dateFormater2.get().format(cal.getTime());
curDate = curDate.replace("-", "");
return Long.parseLong(curDate);
}
public static String getCurTimeStr() {
Calendar cal = Calendar.getInstance();
String curDate = dateFormater.get().format(cal.getTime());
return curDate;
}
/***
* 计算两个时间差，返回的是的秒s
*
* @param dete1
* @param date2
* @return
* @author 火蚁 2015-2-9 下午4:50:06
*/
public static long calDateDifferent(String dete1, String date2) {
long diff = 0;
Date d1 = null;
Date d2 = null;
try {
d1 = dateFormater.get().parse(dete1);
d2 = dateFormater.get().parse(date2);
// 毫秒ms
diff = d2.getTime() - d1.getTime();
} catch (Exception e) {
e.printStackTrace();
}
return diff / 1000;
}
/**
* 判断给定字符串是否空白串。 空白串是指由空格、制表符、回车符、换行符组成的字符串 若输入字符串为null或空字符串，返回true
*
* @param input
* @return boolean
*/
public static boolean isEmpty(String input) {
if (input == null || "".equals(input))
return true;
for (int i = 0; i < input.length(); i++) {
char c = input.charAt(i);
if (c != ' ' && c != '\t' && c != '\r' && c != '\n') {
return false;
}
}
return true;
}
/**
* 判断是不是一个合法的电子邮件地址
*
* @param email
* @return
*/
public static boolean isEmail(String email) {
if (email == null || email.trim().length() == 0)
return false;
return emailer.matcher(email).matches();
}
/**
* 判断一个url是否为图片url
*
* @param url
* @return
*/
public static boolean isImgUrl(String url) {
if (url == null || url.trim().length() == 0)
return false;
return IMG_URL.matcher(url).matches();
}
/**
* 判断是否为一个合法的url地址
*
* @param str
* @return
*/
public static boolean isUrl(String str) {
if (str == null || str.trim().length() == 0)
return false;
return URL.matcher(str).matches();
}
/**
* 字符串转整数
*
* @param str
* @param defValue
* @return
*/
public static int toInt(String str, int defValue) {
try {
return Integer.parseInt(str);
} catch (Exception e) {
}
return defValue;
}
/**
* 对象转整数
*
* @param obj
* @return 转换异常返回 0
*/
public static int toInt(Object obj) {
if (obj == null)
return 0;
return toInt(obj.toString(), 0);
}
/**
* 对象转整数
*
* @param obj
* @return 转换异常返回 0
*/
public static long toLong(String obj) {
try {
return Long.parseLong(obj);
} catch (Exception e) {
}
return 0;
}
/**
* 字符串转布尔值
*
* @param b
* @return 转换异常返回 false
*/
public static boolean toBool(String b) {
try {
return Boolean.parseBoolean(b);
} catch (Exception e) {
}
return false;
}
public static String getString(String s) {
return s == null ? "" : s;
}
/**
* 将一个InputStream流转换成字符串
*
* @param is
* @return
*/
public static String toConvertString(InputStream is) {
StringBuffer res = new StringBuffer();
InputStreamReader isr = new InputStreamReader(is);
BufferedReader read = new BufferedReader(isr);
try {
String line;
line = read.readLine();
while (line != null) {
res.append(line + "<br>");
line = read.readLine();
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (null != isr) {
isr.close();
isr.close();
}
if (null != read) {
read.close();
read = null;
}
if (null != is) {
is.close();
is = null;
}
} catch (IOException e) {
}
}
return res.toString();
}
/***
* 截取字符串
*
* @param start 从那里开始，0算起
* @param num 截取多少个
* @param str 截取的字符串
* @return
*/
public static String getSubString(int start, int num, String str) {
if (str == null) {
return "";
}
int leng = str.length();
if (start < 0) {
start = 0;
}
if (start > leng) {
start = leng;
}
if (num < 0) {
num = 1;
}
int end = start + num;
if (end > leng) {
end = leng;
}
return str.substring(start, end);
}
/**
* 获取当前时间为每年第几周
*
* @return
*/
public static int getWeekOfYear() {
return getWeekOfYear(new Date());
}
/**
* 获取当前时间为每年第几周
*
* @param date
* @return
*/
public static int getWeekOfYear(Date date) {
Calendar c = Calendar.getInstance();
c.setFirstDayOfWeek(Calendar.MONDAY);
c.setTime(date);
int week = c.get(Calendar.WEEK_OF_YEAR) - 1;
week = week == 0 ? 52 : week;
return week > 0 ? week : 1;
}
public static int[] getCurrentDate() {
int[] dateBundle = new int[3];
String[] temp = getDataTime("yyyy-MM-dd").split("-");
for (int i = 0; i < 3; i++) {
try {
dateBundle[i] = Integer.parseInt(temp[i]);
} catch (Exception e) {
dateBundle[i] = 0;
}
}
return dateBundle;
}
/**
* 返回当前系统时间
*/
public static String getDataTime(String format) {
SimpleDateFormat df = new SimpleDateFormat(format);
return df.format(new Date());
}
}
文件操作工具包
import android.content.Context;
import android.os.Environment;
import android.os.StatFs;
import android.util.Log;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
/**
* 文件操作工具包
*/
public class FileUtil {
/**
* 写文本文件 在Android系统中，文件保存在 /data/data/PACKAGE_NAME/files 目录下
*
* @param context
* @param msg
*/
public static void write(Context context, String fileName, String content) {
if (content == null)
content = "";
try {
FileOutputStream fos = context.openFileOutput(fileName,
Context.MODE_PRIVATE);
fos.write(content.getBytes());
fos.close();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 读取文本文件
*
* @param context
* @param fileName
* @return
*/
public static String read(Context context, String fileName) {
try {
FileInputStream in = context.openFileInput(fileName);
return readInStream(in);
} catch (Exception e) {
e.printStackTrace();
}
return "";
}
public static String readInStream(InputStream inStream) {
try {
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
byte[] buffer = new byte[512];
int length = -1;
while ((length = inStream.read(buffer)) != -1) {
outStream.write(buffer, 0, length);
}
outStream.close();
inStream.close();
return outStream.toString();
} catch (IOException e) {
Log.i("FileTest", e.getMessage());
}
return null;
}
public static File createFile(String folderPath, String fileName) {
File destDir = new File(folderPath);
if (!destDir.exists()) {
destDir.mkdirs();
}
return new File(folderPath, fileName + fileName);
}
/**
* 向手机写图片
*
* @param buffer
* @param folder
* @param fileName
* @return
*/
public static boolean writeFile(byte[] buffer, String folder,
String fileName) {
boolean writeSucc = false;
boolean sdCardExist = Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED);
String folderPath = "";
if (sdCardExist) {
folderPath = Environment.getExternalStorageDirectory()
+ File.separator + folder + File.separator;
} else {
writeSucc = false;
}
File fileDir = new File(folderPath);
if (!fileDir.exists()) {
fileDir.mkdirs();
}
File file = new File(folderPath + fileName);
FileOutputStream out = null;
try {
out = new FileOutputStream(file);
out.write(buffer);
writeSucc = true;
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return writeSucc;
}
/**
* 根据文件绝对路径获取文件名
*
* @param filePath
* @return
*/
public static String getFileName(String filePath) {
if (StringUtils.isEmpty(filePath))
return "";
return filePath.substring(filePath.lastIndexOf(File.separator) + 1);
}
/**
* 根据文件的绝对路径获取文件名但不包含扩展名
*
* @param filePath
* @return
*/
public static String getFileNameNoFormat(String filePath) {
if (StringUtils.isEmpty(filePath)) {
return "";
}
int point = filePath.lastIndexOf('.');
return filePath.substring(filePath.lastIndexOf(File.separator) + 1,
point);
}
/**
* 获取文件扩展名
*
* @param fileName
* @return
*/
public static String getFileFormat(String fileName) {
if (StringUtils.isEmpty(fileName))
return "";
int point = fileName.lastIndexOf('.');
return fileName.substring(point + 1);
}
/**
* 获取文件大小
*
* @param filePath
* @return
*/
public static long getFileSize(String filePath) {
long size = 0;
File file = new File(filePath);
if (file != null && file.exists()) {
size = file.length();
}
return size;
}
/**
* 获取文件大小
*
* @param size 字节
* @return
*/
public static String getFileSize(long size) {
if (size <= 0)
return "0";
java.text.DecimalFormat df = new java.text.DecimalFormat("##.##");
float temp = (float) size / 1024;
if (temp >= 1024) {
return df.format(temp / 1024) + "M";
} else {
return df.format(temp) + "K";
}
}
/**
* 转换文件大小
*
* @param fileS
* @return B/KB/MB/GB
*/
public static String formatFileSize(long fileS) {
java.text.DecimalFormat df = new java.text.DecimalFormat("#.00");
String fileSizeString = "";
if (fileS < 1024) {
fileSizeString = df.format((double) fileS) + "B";
} else if (fileS < 1048576) {
fileSizeString = df.format((double) fileS / 1024) + "KB";
} else if (fileS < 1073741824) {
fileSizeString = df.format((double) fileS / 1048576) + "MB";
} else {
fileSizeString = df.format((double) fileS / 1073741824) + "G";
}
return fileSizeString;
}
/**
* 获取目录文件大小
*
* @param dir
* @return
*/
public static long getDirSize(File dir) {
if (dir == null) {
return 0;
}
if (!dir.isDirectory()) {
return 0;
}
long dirSize = 0;
File[] files = dir.listFiles();
if (files != null) {
for (File file : files) {
if (file.isFile()) {
dirSize += file.length();
} else if (file.isDirectory()) {
dirSize += file.length();
dirSize += getDirSize(file); // 递归调用继续统计
}
}
}
return dirSize;
}
/**
* 获取目录文件个数
*
* @param emojiFragment
* @return
*/
public long getFileList(File dir) {
long count = 0;
File[] files = dir.listFiles();
count = files.length;
for (File file : files) {
if (file.isDirectory()) {
count = count + getFileList(file);// 递归
count--;
}
}
return count;
}
public static byte[] toBytes(InputStream in) throws IOException {
ByteArrayOutputStream out = new ByteArrayOutputStream();
int ch;
while ((ch = in.read()) != -1) {
out.write(ch);
}
byte buffer[] = out.toByteArray();
out.close();
return buffer;
}
/**
* 检查文件是否存在
*
* @param name
* @return
*/
public static boolean checkFileExists(String name) {
boolean status;
if (!name.equals("")) {
File path = Environment.getExternalStorageDirectory();
File newPath = new File(path.toString() + name);
status = newPath.exists();
} else {
status = false;
}
return status;
}
/**
* 检查路径是否存在
*
* @param path
* @return
*/
public static boolean checkFilePathExists(String path) {
return new File(path).exists();
}
/**
* 计算SD卡的剩余空间
*
* @return 返回-1，说明没有安装sd卡
*/
public static long getFreeDiskSpace() {
String status = Environment.getExternalStorageState();
long freeSpace = 0;
if (status.equals(Environment.MEDIA_MOUNTED)) {
try {
File path = Environment.getExternalStorageDirectory();
StatFs stat = new StatFs(path.getPath());
long blockSize = stat.getBlockSize();
long availableBlocks = stat.getAvailableBlocks();
freeSpace = availableBlocks * blockSize / 1024;
} catch (Exception e) {
e.printStackTrace();
}
} else {
return -1;
}
return (freeSpace);
}
/**
* 新建目录
*
* @param directoryName
* @return
*/
public static boolean createDirectory(String directoryName) {
boolean status;
if (!directoryName.equals("")) {
File path = Environment.getExternalStorageDirectory();
File newPath = new File(path.toString() + directoryName);
status = newPath.mkdir();
status = true;
} else
status = false;
return status;
}
/**
* 检查是否安装SD卡
*
* @return
*/
public static boolean checkSaveLocationExists() {
String sDCardStatus = Environment.getExternalStorageState();
boolean status;
if (sDCardStatus.equals(Environment.MEDIA_MOUNTED)) {
status = true;
} else
status = false;
return status;
}
/**
* 检查是否安装外置的SD卡
*
* @return
*/
public static boolean checkExternalSDExists() {
Map<String, String> evn = System.getenv();
return evn.containsKey("SECONDARY_STORAGE");
}
/**
* 删除目录(包括：目录里的所有文件)
*
* @param fileName
* @return
*/
public static boolean deleteDirectory(String fileName) {
boolean status;
SecurityManager checker = new SecurityManager();
if (!fileName.equals("")) {
File path = Environment.getExternalStorageDirectory();
File newPath = new File(path.toString() + fileName);
checker.checkDelete(newPath.toString());
if (newPath.isDirectory()) {
String[] listfile = newPath.list();
try {
for (int i = 0; i < listfile.length; i++) {
File deletedFile = new File(newPath.toString() + "/"
+ listfile[i].toString());
deletedFile.delete();
}
newPath.delete();
Log.i("DirectoryManager deleteDirectory", fileName);
status = true;
} catch (Exception e) {
e.printStackTrace();
status = false;
}
} else
status = false;
} else
status = false;
return status;
}
/**
* 删除文件
*
* @param fileName
* @return
*/
public static boolean deleteFile(String fileName) {
boolean status;
SecurityManager checker = new SecurityManager();
if (!fileName.equals("")) {
File path = Environment.getExternalStorageDirectory();
File newPath = new File(path.toString() + fileName);
checker.checkDelete(newPath.toString());
if (newPath.isFile()) {
try {
Log.i("DirectoryManager deleteFile", fileName);
newPath.delete();
status = true;
} catch (SecurityException se) {
se.printStackTrace();
status = false;
}
} else
status = false;
} else
status = false;
return status;
}
/**
* 删除空目录
* <p/>
* 返回 0代表成功 ,1 代表没有删除权限, 2代表不是空目录,3 代表未知错误
*
* @return
*/
public static int deleteBlankPath(String path) {
File f = new File(path);
if (!f.canWrite()) {
return 1;
}
if (f.list() != null && f.list().length > 0) {
return 2;
}
if (f.delete()) {
return 0;
}
return 3;
}
/**
* 重命名
*
* @param oldName
* @param newName
* @return
*/
public static boolean reNamePath(String oldName, String newName) {
File f = new File(oldName);
return f.renameTo(new File(newName));
}
/**
* 删除文件
*
* @param filePath
*/
public static boolean deleteFileWithPath(String filePath) {
SecurityManager checker = new SecurityManager();
File f = new File(filePath);
checker.checkDelete(filePath);
if (f.isFile()) {
Log.i("DirectoryManager deleteFile", filePath);
f.delete();
return true;
}
return false;
}
/**
* 清空一个文件夹
*
* @param files
*/
public static void clearFileWithPath(String filePath) {
List<File> files = FileUtil.listPathFiles(filePath);
if (files.isEmpty()) {
return;
}
for (File f : files) {
if (f.isDirectory()) {
clearFileWithPath(f.getAbsolutePath());
} else {
f.delete();
}
}
}
/**
* 获取SD卡的根目录
*
* @return
*/
public static String getSDRoot() {
return Environment.getExternalStorageDirectory().getAbsolutePath();
}
/**
* 获取手机外置SD卡的根目录
*
* @return
*/
public static String getExternalSDRoot() {
Map<String, String> evn = System.getenv();
return evn.get("SECONDARY_STORAGE");
}
/**
* 列出root目录下所有子目录
*
* @param path
* @return 绝对路径
*/
public static List<String> listPath(String root) {
List<String> allDir = new ArrayList<String>();
SecurityManager checker = new SecurityManager();
File path = new File(root);
checker.checkRead(root);
// 过滤掉以.开始的文件夹
if (path.isDirectory()) {
for (File f : path.listFiles()) {
if (f.isDirectory() && !f.getName().startsWith(".")) {
allDir.add(f.getAbsolutePath());
}
}
}
return allDir;
}
/**
* 获取一个文件夹下的所有文件
*
* @param root
* @return
*/
public static List<File> listPathFiles(String root) {
List<File> allDir = new ArrayList<File>();
SecurityManager checker = new SecurityManager();
File path = new File(root);
checker.checkRead(root);
File[] files = path.listFiles();
for (File f : files) {
if (f.isFile())
allDir.add(f);
else
listPath(f.getAbsolutePath());
}
return allDir;
}
public enum PathStatus {
SUCCESS, EXITS, ERROR
}
/**
* 创建目录
*
* @param path
*/
public static PathStatus createPath(String newPath) {
File path = new File(newPath);
if (path.exists()) {
return PathStatus.EXITS;
}
if (path.mkdir()) {
return PathStatus.SUCCESS;
} else {
return PathStatus.ERROR;
}
}
/**
* 截取路径名
*
* @return
*/
public static String getPathName(String absolutePath) {
int start = absolutePath.lastIndexOf(File.separator) + 1;
int end = absolutePath.length();
return absolutePath.substring(start, end);
}
/**
* 获取应用程序缓存文件夹下的指定目录
*
* @param context
* @param dir
* @return
*/
public static String getAppCache(Context context, String dir) {
String savePath = context.getCacheDir().getAbsolutePath() + "/" + dir + "/";
File savedir = new File(savePath);
if (!savedir.exists()) {
savedir.mkdirs();
}
savedir = null;
return savePath;
}
}
加密解密工具包
import java.security.InvalidAlgorithmParameterException;
import java.security.Key;
import java.security.spec.AlgorithmParameterSpec;
import javax.crypto.Cipher;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
import javax.crypto.spec.IvParameterSpec;
/**
* 加密解密工具包
*/
public class CyptoUtils {
public static final String ALGORITHM_DES = "DES/CBC/PKCS5Padding";
/**
* DES算法，加密
*
* @param data 待加密字符串
* @param key 加密私钥，长度不能够小于8位
* @return 加密后的字节数组，一般结合Base64编码使用
* @throws InvalidAlgorithmParameterException
* @throws Exception
*/
public static String encode(String key,String data) {
if(data == null)
return null;
try{
DESKeySpec dks = new DESKeySpec(key.getBytes());
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
//key的长度不能够小于8位字节
Key secretKey = keyFactory.generateSecret(dks);
Cipher cipher = Cipher.getInstance(ALGORITHM_DES);
IvParameterSpec iv = new IvParameterSpec("12345678".getBytes());
AlgorithmParameterSpec paramSpec = iv;
cipher.init(Cipher.ENCRYPT_MODE, secretKey,paramSpec);
byte[] bytes = cipher.doFinal(data.getBytes());
return byte2hex(bytes);
}catch(Exception e){
e.printStackTrace();
return data;
}
}
/**
* DES算法，解密
*
* @param data 待解密字符串
* @param key 解密私钥，长度不能够小于8位
* @return 解密后的字节数组
* @throws Exception 异常
*/
public static String decode(String key,String data) {
if(data == null)
return null;
try {
DESKeySpec dks = new DESKeySpec(key.getBytes());
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
//key的长度不能够小于8位字节
Key secretKey = keyFactory.generateSecret(dks);
Cipher cipher = Cipher.getInstance(ALGORITHM_DES);
IvParameterSpec iv = new IvParameterSpec("12345678".getBytes());
AlgorithmParameterSpec paramSpec = iv;
cipher.init(Cipher.DECRYPT_MODE, secretKey, paramSpec);
return new String(cipher.doFinal(hex2byte(data.getBytes())));
} catch (Exception e){
e.printStackTrace();
return data;
}
}
/**
* 二行制转字符串
* @param b
* @return
*/
private static String byte2hex(byte[] b) {
StringBuilder hs = new StringBuilder();
String stmp;
for (int n = 0; b!=null && n < b.length; n++) {
stmp = Integer.toHexString(b[n] & 0XFF);
if (stmp.length() == 1)
hs.append('0');
hs.append(stmp);
}
return hs.toString().toUpperCase();
}
private static byte[] hex2byte(byte[] b) {
if((b.length%2)!=0)
throw new IllegalArgumentException();
byte[] b2 = new byte[b.length/2];
for (int n = 0; n < b.length; n+=2) {
String item = new String(b,n,2);
b2[n/2] = (byte)Integer.parseInt(item,16);
}
return b2;
}
}
跟App相关的辅助类
import android.content.Context;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
/**
* @Desc：跟App相关的辅助类
*/
public class AppUtils
{
private AppUtils()
{
/* cannot be instantiated */
throw new UnsupportedOperationException("cannot be instantiated");
}
/**
* 获取应用程序名称
*/
public static String getAppName(Context context)
{
try
{
PackageManager packageManager = context.getPackageManager();
PackageInfo packageInfo = packageManager.getPackageInfo(
context.getPackageName(), 0);
int labelRes = packageInfo.applicationInfo.labelRes;
return context.getResources().getString(labelRes);
} catch (NameNotFoundException e)
{
e.printStackTrace();
}
return null;
}
/**
* [获取应用程序版本名称信息]
*
* @param context
* @return 当前应用的版本名称
*/
public static String getVersionName(Context context)
{
try
{
PackageManager packageManager = context.getPackageManager();
PackageInfo packageInfo = packageManager.getPackageInfo(
context.getPackageName(), 0);
return packageInfo.versionName;
} catch (NameNotFoundException e)
{
e.printStackTrace();
}
return null;
}
}
像素的工具类
import android.content.Context;
import android.util.TypedValue;
/**
* @Desc：像素的工具类
*/
public class DensityUtils
{
private DensityUtils()
{
/* cannot be instantiated */
throw new UnsupportedOperationException("cannot be instantiated");
}
/**
* dp转px
*
* @param context
* @return
*/
public static int dp2px(Context context, float dpVal)
{
return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
dpVal, context.getResources().getDisplayMetrics());
}
/**
* sp转px
*
* @param context
* @return
*/
public static int sp2px(Context context, float spVal)
{
return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP,
spVal, context.getResources().getDisplayMetrics());
}
/**
* px转dp
*
* @param context
* @param pxVal
* @return
*/
public static float px2dp(Context context, float pxVal)
{
final float scale = context.getResources().getDisplayMetrics().density;
return (pxVal / scale);
}
/**
* px转sp
*
* @param pxVal
* @return
*/
public static float px2sp(Context context, float pxVal)
{
return (pxVal / context.getResources().getDisplayMetrics().scaledDensity);
}
}
软键盘工具类
import android.content.Context;
import android.view.inputmethod.InputMethodManager;
import android.widget.EditText;
/**
* @Desc：软键盘工具类
*/
public class KeyBoardUtils
{
/**
* 打卡软键盘
*
* @param mEditText
* 输入框
* @param mContext
* 上下文
*/
public static void openKeybord(EditText mEditText, Context mContext)
{
InputMethodManager imm = (InputMethodManager) mContext
.getSystemService(Context.INPUT_METHOD_SERVICE);
imm.showSoftInput(mEditText, InputMethodManager.RESULT_SHOWN);
imm.toggleSoftInput(InputMethodManager.SHOW_FORCED,
InputMethodManager.HIDE_IMPLICIT_ONLY);
}
/**
* 关闭软键盘
*
* @param mEditText
* 输入框
* @param mContext
* 上下文
*/
public static void closeKeybord(EditText mEditText, Context mContext)
{
InputMethodManager imm = (InputMethodManager) mContext
.getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(mEditText.getWindowToken(), 0);
}
}
跟网络相关的工具类
import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
/**
* @Desc：跟网络相关的工具类
*/
public class NetUtils
{
private NetUtils()
{
/* cannot be instantiated */
throw new UnsupportedOperationException("cannot be instantiated");
}
/**
* 判断网络是否连接
*
* @param context
* @return
*/
public static boolean isConnected(Context context)
{
ConnectivityManager connectivity = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
if (null != connectivity)
{
NetworkInfo info = connectivity.getActiveNetworkInfo();
if (null != info && info.isConnected())
{
if (info.getState() == NetworkInfo.State.CONNECTED)
{
return true;
}
}
}
return false;
}
/**
* 判断是否是wifi连接
*/
public static boolean isWifi(Context context)
{
ConnectivityManager cm = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
if (cm == null)
return false;
return cm.getActiveNetworkInfo().getType() == ConnectivityManager.TYPE_WIFI;
}
/**
* 打开网络设置界面
*/
public static void openSetting(Activity activity)
{
Intent intent = new Intent("/");
ComponentName cm = new ComponentName("com.android.settings",
"com.android.settings.WirelessSettings");
intent.setComponent(cm);
intent.setAction("android.intent.action.VIEW");
activity.startActivityForResult(intent, 0);
}
}
获得屏幕相关的辅助类
import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Rect;
import android.util.DisplayMetrics;
import android.view.View;
import android.view.WindowManager;
/**
* @Desc：获得屏幕相关的辅助类
*/
public class ScreenUtils
{
private ScreenUtils()
{
/* cannot be instantiated */
throw new UnsupportedOperationException("cannot be instantiated");
}
/**
* 获得屏幕高度
*
* @param context
* @return
*/
public static int getScreenWidth(Context context)
{
WindowManager wm = (WindowManager) context
.getSystemService(Context.WINDOW_SERVICE);
DisplayMetrics outMetrics = new DisplayMetrics();
wm.getDefaultDisplay().getMetrics(outMetrics);
return outMetrics.widthPixels;
}
/**
* 获得屏幕宽度
*
* @param context
* @return
*/
public static int getScreenHeight(Context context)
{
WindowManager wm = (WindowManager) context
.getSystemService(Context.WINDOW_SERVICE);
DisplayMetrics outMetrics = new DisplayMetrics();
wm.getDefaultDisplay().getMetrics(outMetrics);
return outMetrics.heightPixels;
}
/**
* 获得状态栏的高度
*
* @param context
* @return
*/
public static int getStatusHeight(Context context)
{
int statusHeight = -1;
try
{
Class<?> clazz = Class.forName("com.android.internal.R$dimen");
Object object = clazz.newInstance();
int height = Integer.parseInt(clazz.getField("status_bar_height")
.get(object).toString());
statusHeight = context.getResources().getDimensionPixelSize(height);
} catch (Exception e)
{
e.printStackTrace();
}
return statusHeight;
}
/**
* 获取当前屏幕截图，包含状态栏
*
* @param activity
* @return
*/
public static Bitmap snapShotWithStatusBar(Activity activity)
{
View view = activity.getWindow().getDecorView();
view.setDrawingCacheEnabled(true);
view.buildDrawingCache();
Bitmap bmp = view.getDrawingCache();
int width = getScreenWidth(activity);
int height = getScreenHeight(activity);
Bitmap bp = null;
bp = Bitmap.createBitmap(bmp, 0, 0, width, height);
view.destroyDrawingCache();
return bp;
}
/**
* 获取当前屏幕截图，不包含状态栏
*
* @param activity
* @return
*/
public static Bitmap snapShotWithoutStatusBar(Activity activity)
{
View view = activity.getWindow().getDecorView();
view.setDrawingCacheEnabled(true);
view.buildDrawingCache();
Bitmap bmp = view.getDrawingCache();
Rect frame = new Rect();
activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
int statusBarHeight = frame.top;
int width = getScreenWidth(activity);
int height = getScreenHeight(activity);
Bitmap bp = null;
bp = Bitmap.createBitmap(bmp, 0, statusBarHeight, width, height
- statusBarHeight);
view.destroyDrawingCache();
return bp;
}
}
SD卡相关的辅助类
import android.os.Environment;
import android.os.StatFs;
import java.io.File;
/**
* @Desc：SD卡相关的辅助类
*/
public class SDCardUtils
{
private SDCardUtils()
{
/* cannot be instantiated */
throw new UnsupportedOperationException("cannot be instantiated");
}
/**
* 判断SDCard是否可用
*
* @return
*/
public static boolean isSDCardEnable()
{
return Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED);
}
/**
* 获取SD卡路径
*
* @return
*/
public static String getSDCardPath()
{
return Environment.getExternalStorageDirectory().getAbsolutePath()
+ File.separator;
}
/**
* 获取SD卡的剩余容量 单位byte
*
* @return
*/
public static long getSDCardAllSize()
{
if (isSDCardEnable())
{
StatFs stat = new StatFs(getSDCardPath());
// 获取空闲的数据块的数量
long availableBlocks = (long) stat.getAvailableBlocks() - 4;
// 获取单个数据块的大小（byte）
long freeBlocks = stat.getAvailableBlocks();
return freeBlocks * availableBlocks;
}
return 0;
}
/**
* 获取指定路径所在空间的剩余可用容量字节数，单位byte
*
* @param filePath
* @return 容量字节 SDCard可用空间，内部存储可用空间
*/
public static long getFreeBytes(String filePath)
{
// 如果是sd卡的下的路径，则获取sd卡可用容量
if (filePath.startsWith(getSDCardPath()))
{
filePath = getSDCardPath();
} else
{// 如果是内部存储的路径，则获取内存存储的可用容量
filePath = Environment.getDataDirectory().getAbsolutePath();
}
StatFs stat = new StatFs(filePath);
long availableBlocks = (long) stat.getAvailableBlocks() - 4;
return stat.getBlockSize() * availableBlocks;
}
/**
* 获取系统存储路径
*
* @return
*/
public static String getRootDirectoryPath()
{
return Environment.getRootDirectory().getAbsolutePath();
}
}
