android-zip解压缩方法

 1 /**
 2      * 解压缩文件到指定的目录.
 3      *
 4      * @param unZipfileName
 5      *            需要解压缩的文件（带路径）
 6      * @param mDestPath
 7      *            解压缩后存放的路径
 8      **/
 9     public static void unZip(String unZipfileName, String mDestPath) {
10         if (!mDestPath.endsWith("/")) {
11             mDestPath = mDestPath + "/";
12         }
13         FileOutputStream fileOut = null;
14         ZipInputStream zipIn = null;
15         ZipEntry zipEntry = null;
16         File file = null;
17         int readedBytes = 0;
18         byte buf[] = new byte[4096];
19         try {
20             zipIn = new ZipInputStream(new BufferedInputStream(
21                     new FileInputStream(unZipfileName)));
22             while ((zipEntry = zipIn.getNextEntry()) != null) {
23                 file = new File(mDestPath + zipEntry.getName());
24                 if (zipEntry.isDirectory()) {
25                     file.mkdirs();
26                 } else {
27                     // 如果指定文件的目录不存在,则创建之.
28                     File parent = file.getParentFile();
29                     if (!parent.exists()) {
30                         parent.mkdirs();
31                     }
32                     fileOut = new FileOutputStream(file);
33                     while ((readedBytes = zipIn.read(buf)) > 0) {
34                         fileOut.write(buf, 0, readedBytes);
35                     }
36                     fileOut.close();
37                 }
38                 zipIn.closeEntry();
39             }
40         } catch (IOException ioe) {
41             ioe.printStackTrace();
42
43         }
44     }