在Android应用程序中解压缩sd卡上的压缩文件

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

public class UnzipUtil {

    public static void unzip(String zipFilePath, String destDirectory) {
        File destDir = new File(destDirectory);
        if (!destDir.exists()) {
            destDir.mkdir();
        }
        ZipInputStream zipIn = null;
        try {
            zipIn = new ZipInputStream(new FileInputStream(zipFilePath));
            ZipEntry entry = zipIn.getNextEntry();
            while (entry != null) {
                String filePath = destDirectory + File.separator + entry.getName();
                if (!entry.isDirectory()) {
                    extractFile(zipIn, filePath);
                } else {
                    File dir = new File(filePath);
                    dir.mkdirs();
                }
                zipIn.closeEntry();
                entry = zipIn.getNextEntry();
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (zipIn != null) {
                try {
                    zipIn.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

    private static void extractFile(ZipInputStream zipIn, String filePath) throws IOException {
        FileOutputStream fos = null;
        try {
            fos = new FileOutputStream(filePath);
            byte[] bytesIn = new byte[4096];
            int read = 0;
            while ((read = zipIn.read(bytesIn)) != -1) {
                fos.write(bytesIn, 0, read);
            }
        } finally {
            if (fos != null) {
                fos.close();
            }
        }
    }
}

String zipFilePath = "/sdcard/myfile.zip";
String destDirectory = "/sdcard/unzipped";
UnzipUtil.unzip(zipFilePath, destDirectory);