Android创建zip文件

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

public class ZipUtils {
    private static final int BUFFER_SIZE = 4096;

    public static void createZipFile(String sourceFolderPath, String zipFilePath) throws IOException {
        FileOutputStream fos = new FileOutputStream(zipFilePath);
        BufferedOutputStream bos = new BufferedOutputStream(fos);
        ZipOutputStream zos = new ZipOutputStream(bos);

        zipFolder(sourceFolderPath, zos);

        zos.close();
    }

    private static void zipFolder(String folderPath, ZipOutputStream zos) throws IOException {
        byte[] buffer = new byte[BUFFER_SIZE];

        File folder = new File(folderPath);
        File[] files = folder.listFiles();

        for (File file : files) {
            if (file.isDirectory()) {
                zipFolder(file.getAbsolutePath(), zos);
            } else {
                FileInputStream fis = new FileInputStream(file);
                BufferedInputStream bis = new BufferedInputStream(fis);

                String entryPath = file.getAbsolutePath().substring(folder.getAbsolutePath().length() + 1);
                ZipEntry entry = new ZipEntry(entryPath);
                zos.putNextEntry(entry);

                int bytesRead;
                while ((bytesRead = bis.read(buffer)) != -1) {
                    zos.write(buffer, 0, bytesRead);
                }

                bis.close();
                fis.close();
            }
        }
    }
}