Android实现zip⽂件压缩及解压缩的⽅法本⽂实例讲述了Android实现zip⽂件压缩及解压缩的⽅法。分享给⼤家供⼤家参考。具体如下：DirTraversal.java如下：
;
import java.io.File;
import java.util.ArrayList;
import java.util.LinkedList;
/**
* ⽂件夹遍历
* @author once
*
*/
public class DirTraversal {
//no recursion
public static LinkedList<File> listLinkedFiles(String strPath) {
LinkedList<File> list = new LinkedList<File>();
File dir = new File(strPath);
File file[] = dir.listFiles();
for (int i = 0; i < file.length; i++) {
if (file[i].isDirectory())
list.add(file[i]);
else
System.out.println(file[i].getAbsolutePath());
}
File tmp;
while (!list.isEmpty()) {
tmp = (File) veFirst();
if (tmp.isDirectory()) {
file = tmp.listFiles();
if (file == null)
continue;
for (int i = 0; i < file.length; i++) {
if (file[i].isDirectory())
list.add(file[i]);
else
System.out.println(file[i].getAbsolutePath());
}
} else {
System.out.AbsolutePath());
}
}
return list;
}
//recursion
public static ArrayList<File> listFiles(String strPath) {
return refreshFileList(strPath);
}
public static ArrayList<File> refreshFileList(String strPath) {
ArrayList<File> filelist = new ArrayList<File>();
File dir = new File(strPath);
File[] files = dir.listFiles();
if (files == null)
return null;
for (int i = 0; i < files.length; i++) {
if (files[i].isDirectory()) {
refreshFileList(files[i].getAbsolutePath());
} else {
if(files[i].getName().toLowerCase().endsWith("zip"))
filelist.add(files[i]);
}
}
return filelist;
}
}
ZipUtils.java如下：
;
import java.io.*;
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;
/**
* Java utils 实现的Zip⼯具
*
* @author once
*/
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 解压缩的⽬标⽬录
* @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 (!ists()) {
desDir.mkdirs();
}
ZipFile zf = new ZipFile(zipFile);
for (Enumeration<?> entries = zf.entries(); entries.hasMoreElements();) {
ZipEntry entry = ((Element());
InputStream in = zf.getInputStream(entry);
String str = folderPath + File.separator + Name();
str = new Bytes("8859_1"), "GB2312");
File desFile = new File(str);
if (!ists()) {
File fileParentDir = ParentFile();
if (!ists()) {
fileParentDir.mkdirs();
}
}
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 (!ists()) {
desDir.mkdir();
}
ZipFile zf = new ZipFile(zipFile);
for (Enumeration<?> entries = zf.entries(); entries.hasMoreElements();) {
ZipEntry entry = ((Element());
if (Name().contains(nameContains)) {
InputStream in = zf.getInputStream(entry);
String str = folderPath + File.separator + Name();
str = new Bytes("8859_1"), "GB2312");
// Bytes("GB2312"),"8859_1" 输出
// Bytes("8859_1"),"GB2312" 输⼊
File desFile = new File(str);
if (!ists()) {
File fileParentDir = ParentFile();
if (!ists()) {
fileParentDir.mkdirs();
mkdirs方法}
}
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 = ((Element());
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);
ies();
}
/**
* 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 Comment().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 Name().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 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 + (im().length() == 0 ? "" : File.separator)
+ Name();
rootpath = new Bytes("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();
}
}
}
希望本⽂所述对⼤家的Android程序设计有所帮助。

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