Android 解压zip文件

public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);String zipFileStr="/mnt/sdcard/AndroidUnzip.zip";  //设置Zip文件路径String targetDir=zipFileStr.substring(0, zipFileStr.length()-4);  //设置解压目标文件夹File file=new File(zipFileStr);File dirfile=new File(targetDir);if(!dirfile.exists()){dirfile.mkdirs();}if(file.length()!=0){Log.v("Android Unzip", "Start");try {UnZipFolder(zipFileStr,targetDir);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}Log.v("Android Unzip", "End");}else{Log.v("Android Unzip","File not exist");}}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}public static void UnZipFolder(String zipFileString, String outPathString)throws Exception {          android.util.Log.v("XZip", "UnZipFolder(String, String)");          java.util.zip.ZipInputStream inZip = new java.util.zip.ZipInputStream(new java.io.FileInputStream(zipFileString));          java.util.zip.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);                  java.io.File folder = new java.io.File(outPathString + java.io.File.separator + szName);                  folder.mkdirs();                        } else {                            java.io.File file = new java.io.File(outPathString + java.io.File.separator + szName);                  file.createNewFile();                  // get the output stream of the file                  java.io.FileOutputStream out = new java.io.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();              }          }//end of while                   inZip.close();            }//end of func
添加许可
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
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