android解压ZIP文件

在AndroidManifest.xml里添加权限：

<uses-permissionandroid:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permissionandroid:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>

工具类：

public class ZIP {public ZIP(){}/** * DeCompress the ZIP to the path * @param zipFileString  name of ZIP * @param outPathString   path to be unZIP* @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()) {  // get the folder name of the widget  szName = szName.substring(0, szName.length() - 1);  File folder = new File(outPathString + File.separator + szName);  folder.mkdirs();  } else {  File file = new File(outPathString + File.separator + szName);  file.createNewFile();  // get the output stream of the file  FileOutputStream out = new FileOutputStream(file);  int len;  byte[] buffer = new byte[1024];  // read (len) bytes into buffer  while ((len = inZip.read(buffer)) != -1) {  // write (len) byte from buffer at the position 0  out.write(buffer, 0, len);  out.flush();  }  out.close();  }  } inZip.close();  }/** * Compress file and folder* @param srcFileString   file or folder to be Compress* @param zipFileString   the path name of result ZIP* @throws Exception */  public static void ZipFolder(String srcFileString, String zipFileString)throws Exception {  //create ZIP ZipOutputStream outZip = new ZipOutputStream(new FileOutputStream(zipFileString));  //create the file File file = new File(srcFileString);  //compressZipFiles(file.getParent()+File.separator, file.getName(), outZip);  //finish and closeoutZip.finish();  outZip.close();  }/** * compress files* @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 {  //folderString fileList[] = file.list();  //no child file and compress  if (fileList.length <= 0) {  ZipEntry zipEntry =  new ZipEntry(fileString+File.separator);  zipOutputSteam.putNextEntry(zipEntry);  zipOutputSteam.closeEntry();                  }  //child files and recursion  for (int i = 0; i < fileList.length; i++) {  ZipFiles(folderString, fileString+java.io.File.separator+fileList[i], zipOutputSteam);  }//end of for  }    }/** * return the InputStream of file in the ZIP* @param zipFileString  name of ZIP * @param fileString     name of file in the ZIP * @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);  }  /** * return files list(file and folder) in the ZIP* @param zipFileString     ZIP name* @param bContainFolder    contain folder or not* @param bContainFile      contain file or not* @return * @throws Exception */  public static List<File> GetFileList(String zipFileString, boolean bContainFolder, boolean bContainFile)throws Exception {  List<File> fileList = new ArrayList<File>();  ZipInputStream inZip = new ZipInputStream(new FileInputStream(zipFileString));  ZipEntry zipEntry;  String szName = "";  while ((zipEntry = inZip.getNextEntry()) != null) {  szName = zipEntry.getName();  if (zipEntry.isDirectory()) {  // get the folder name of the widget  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;  }
}

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