Android中怎么实现一个Zip解压缩工具类，很多新手对此不是很清楚，为了帮助大家解决这个难题，下面小编将为大家详细讲解，有这方面需求的人可以来学习下，希望你能有所收获。
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具体内容如下
package com.example.zip.commons.utils;
import android.util.Log;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;
/**
* @author: lijuan
* @description: 解压ZIP文件
* @date: 2017-04-11
* @time: 09:22
*/
public class ZipUtils {
public static final String TAG="ZIP";
public ZipUtils(){
}
/**
* 解压zip到指定的路径
* @param zipFileString ZIP的名称
* @param outPathString 要解压缩路径
* @throws Exception
*/
public static void UnZipFolder(String zipFileString, String outPathString) throws Exception {
ZipInputStream inZip = new ZipInputStream(new FileInputStream(zipFileString));
ZipEntry zipEntry;
String szName = "";
while ((zipEntry = inZip.getNextEntry()) != null) {
szName = zipEntry.getName();
if (zipEntry.isDirectory()) {
//获取部件的文件夹名
szName = szName.substring(0, szName.length() - 1);
File folder = new File(outPathString + File.separator + szName);
folder.mkdirs();
} else {
Log.e(TAG,outPathString + File.separator + szName);
File file = new File(outPathString + File.separator + szName);
if (!file.exists()){
Log.e(TAG, "Create the file:" + outPathString + File.separator + szName);
file.getParentFile().mkdirs();
file.createNewFile();
}
// 获取文件的输出流
FileOutputStream out = new FileOutputStream(file);
int len;
byte[] buffer = new byte[1024];
// 读取（字节）字节到缓冲区
while ((len = inZip.read(buffer)) != -1) {
// 从缓冲区（0）位置写入（字节）字节
out.write(buffer, 0, len);
out.flush();
}
out.close();
}
}
inZip.close();
}
public static void UnZipFolder(String zipFileString, String outPathString,String szName) throws Exception {
ZipInputStream inZip = new ZipInputStream(new FileInputStream(zipFileString));
ZipEntry zipEntry;
while ((zipEntry = inZip.getNextEntry()) != null) {
//szName = zipEntry.getName();
if (zipEntry.isDirectory()) {
//获取部件的文件夹名
szName = szName.substring(0, szName.length() - 1);
File folder = new File(outPathString + File.separator + szName);
folder.mkdirs();
} else {
Log.e(TAG,outPathString + File.separator + szName);
File file = new File(outPathString + File.separator + szName);
if (!file.exists()){
Log.e(TAG, "Create the file:" + outPathString + File.separator + szName);
file.getParentFile().mkdirs();
file.createNewFile();
}
// 获取文件的输出流
FileOutputStream out = new FileOutputStream(file);
int len;
byte[] buffer = new byte[1024];
// 读取（字节）字节到缓冲区
while ((len = inZip.read(buffer)) != -1) {
// 从缓冲区（0）位置写入（字节）字节
out.write(buffer, 0, len);
out.flush();
}
out.close();
}
}
inZip.close();
}
/**
* 压缩文件和文件夹
* @param srcFileString 要压缩的文件或文件夹
* @param zipFileString 解压完成的Zip路径
* @throws Exception
*/
public static void ZipFolder(String srcFileString, String zipFileString)throws Exception {
//创建ZIP
ZipOutputStream outZip = new ZipOutputStream(new FileOutputStream(zipFileString));
//创建文件
File file = new File(srcFileString);
//压缩
ZipFiles(file.getParent()+File.separator, file.getName(), outZip);
//完成和关闭
outZip.finish();
outZip.close();
}
/**
* 压缩文件
* @param folderString
* @param fileString
* @param zipOutputSteam
* @throws Exception
*/
private static void ZipFiles(String folderString, String fileString, ZipOutputStream zipOutputSteam)throws Exception{
if(zipOutputSteam == null)
return;
File file = new File(folderString+fileString);
if (file.isFile()) {
ZipEntry zipEntry = new ZipEntry(fileString);
FileInputStream inputStream = new FileInputStream(file);
zipOutputSteam.putNextEntry(zipEntry);
int len;
byte[] buffer = new byte[4096];
while((len=inputStream.read(buffer)) != -1)
{
zipOutputSteam.write(buffer, 0, len);
}
zipOutputSteam.closeEntry();
}
else {
//文件夹
String fileList[] = file.list();
//没有子文件和压缩
if (fileList.length <= 0) {
ZipEntry zipEntry = new ZipEntry(fileString+File.separator);
zipOutputSteam.putNextEntry(zipEntry);
zipOutputSteam.closeEntry();
}
//子文件和递归
for (int i = 0; i < fileList.length; i++) {
ZipFiles(folderString, fileString+ File.separator+fileList[i], zipOutputSteam);
}
}
}
/**
* 返回zip的文件输入流
* @param zipFileString zip的名称
* @param fileString ZIP的文件名
* @return InputStream
* @throws Exception
*/
public static InputStream UpZip(String zipFileString, String fileString)throws Exception {
ZipFile zipFile = new ZipFile(zipFileString);
ZipEntry zipEntry = zipFile.getEntry(fileString);
return zipFile.getInputStream(zipEntry);
}
/**
* 返回ZIP中的文件列表（文件和文件夹）
* @param zipFileString ZIP的名称
* @param bContainFolder 是否包含文件夹
* @param bContainFile 是否包含文件
* @return
* @throws Exception
*/
public static List GetFileList(String zipFileString, boolean bContainFolder, boolean bContainFile)throws Exception {
List fileList = new ArrayList();
ZipInputStream inZip = new ZipInputStream(new FileInputStream(zipFileString));
ZipEntry zipEntry;
String szName = "";
while ((zipEntry = inZip.getNextEntry()) != null) {
szName = zipEntry.getName();
if (zipEntry.isDirectory()) {
// 获取部件的文件夹名
szName = szName.substring(0, szName.length() - 1);
File folder = new File(szName);
if (bContainFolder) {
fileList.add(folder);
}
} else {
File file = new File(szName);
if (bContainFile) {
fileList.add(file);
}
}
}
inZip.close();
return fileList;
}
} 添加权限
