在Android中内置有解压的工具，一般可以使用下面的方法解压：

�注意import的包：

因

import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
/**
     * 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 (!desDir.exists()) {
            desDir.mkdirs();
        }
        ZipFile zf = new ZipFile(zipFile);
        for (Enumeration<?> entries = zf.entries(); entries.hasMoreElements();) {
            ZipEntry entry = ((ZipEntry)entries.nextElement());
            InputStream in = zf.getInputStream(entry);
            if(entry.getName().indexOf("__MACOSX")>=0){
                continue;
            }
            String str = folderPath + File.separator + entry.getName();
            str = new String(str.getBytes("8859_1"), "UTF-8");
            
            File desFile = new File(str);
            if (!desFile.exists()) {
                File fileParentDir = desFile.getParentFile();
                if (!fileParentDir.exists()) {
                    fileParentDir.mkdirs();
                }
                desFile.createNewFile();
            }
            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();
        }
    }

但是在解压遇到中文的时候，解压出来中文会变成乱码，把上面的编码改成啥都没用。

果

这时候可以使用apache-ant-zip的解压包来解决：

• 先将apache-ant-zip.jar加入依赖，下载地址：http://download.csdn.net/detail/qq_25806863/9878967

然后使用这个包中的引用：

import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipFile;

public static void upZipFile(File zipFile, String folderPath) throws IOException {
        OutputStream os = null;
        InputStream is = null;
        ZipFile zf = null;
        try {
            zf = new ZipFile(zipFile,"UTF-8");
            String directoryPath = "";
            directoryPath = folderPath;
            Enumeration entryEnum = zf.getEntries();
            if (null != entryEnum) {
                ZipEntry zipEntry = null;
                while (entryEnum.hasMoreElements()) {
                    zipEntry = (ZipEntry) entryEnum.nextElement();
                    if (zipEntry.isDirectory()) { 
                      //不处理文件夹
                        directoryPath = directoryPath + File.separator
                                + zipEntry.getName();
                        System.out.println(directoryPath);
                        continue;
                    }
                    if (zipEntry.getSize() > 0) {

                        File targetFile = new File(directoryPath+ File.separator + zipEntry.getName());
                        if (!targetFile.exists()) {  
                          //如果不存在就创建
                            File fileParentDir = targetFile.getParentFile();
                            if (!fileParentDir.exists()) {
                                fileParentDir.mkdirs();
                            }
                            targetFile.createNewFile();
                        }
                        os = new BufferedOutputStream(new FileOutputStream(targetFile));
                        is = zf.getInputStream(zipEntry);
                        byte[] buffer = new byte[4096];
                        int readLen = 0;
                        while ((readLen = is.read(buffer, 0, 1024)) >= 0) {
                            os.write(buffer, 0, readLen);
                        }

                        os.flush();
                        os.close();
                    }
                }
            }
        } catch (IOException ex) {
            throw ex;
        } finally {
            if (null != is) {
                is.close();
            }
            if (null != os) {
                os.close();
            }
        }
    }