Android实现文件解压带进度条功能

package com.example.videodemo.zip; public class ZipProgressUtil {   /***    * 解压通用方法    *    * @param zipFileString    *      文件路径    * @param outPathString    *      解压路径    * @param listener    *      加压监听    */   public static void UnZipFile(final String zipFileString, final String outPathString, final ZipListener listener) {     Thread zipThread = new UnZipMainThread(zipFileString, outPathString, listener);     zipThread.start();   }   public interface ZipListener {     /** 开始解压 */     void zipStart();     /** 解压成功 */     void zipSuccess();     /** 解压进度 */     void zipProgress(int progress);     /** 解压失败 */     void zipFail();   } } 

package com.example.videodemo.zip; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.util.Enumeration; import java.util.zip.ZipEntry; import java.util.zip.ZipFile; import java.util.zip.ZipInputStream; import com.example.videodemo.zip.ZipProgressUtil.ZipListener; public class UnZipMainThread extends Thread {   String zipFileString;   String outPathString;   ZipListener listener;   public UnZipMainThread(String zipFileString, String outPathString, ZipListener listener) {     this.zipFileString = zipFileString;     this.outPathString = outPathString;     this.listener = listener;   }   @Override   public void run() {     super.run();     try {       listener.zipStart();       long sumLength = 0;       // 获取解压之后文件的大小,用来计算解压的进度       long ziplength = getZipTrueSize(zipFileString);       System.out.println("====文件的大小==" + ziplength);       FileInputStream inputStream = new FileInputStream(zipFileString);       ZipInputStream inZip = new ZipInputStream(inputStream);       ZipEntry zipEntry;       String szName = "";       while ((zipEntry = inZip.getNextEntry()) != null) {         szName = zipEntry.getName();         if (zipEntry.isDirectory()) {           szName = szName.substring(0, szName.length() - 1);           File folder = new File(outPathString + File.separator + szName);           folder.mkdirs();         } else {           File file = new File(outPathString + File.separator + szName);           file.createNewFile();           FileOutputStream out = new FileOutputStream(file);           int len;           byte[] buffer = new byte[1024];           while ((len = inZip.read(buffer)) != -1) {             sumLength += len;             int progress = (int) ((sumLength * 100) / ziplength);             updateProgress(progress, listener);             out.write(buffer, 0, len);             out.flush();           }           out.close();         }       }       listener.zipSuccess();       inZip.close();     } catch (Exception e) {       listener.zipFail();     }   }   int lastProgress = 0;   private void updateProgress(int progress, ZipListener listener2) {     /** 因为会频繁的刷新,这里我只是进度>1%的时候才去显示 */     if (progress > lastProgress) {       lastProgress = progress;       listener2.zipProgress(progress);     }   }   /**    * 获取压缩包解压后的内存大小    *    * @param filePath    *      文件路径    * @return 返回内存long类型的值    */   public long getZipTrueSize(String filePath) {     long size = 0;     ZipFile f;     try {       f = new ZipFile(filePath);       Enumeration<? extends ZipEntry> en = f.entries();       while (en.hasMoreElements()) {         size += en.nextElement().getSize();       }     } catch (IOException e) {       e.printStackTrace();     }     return size;   } } 

package com.example.videodemo; import com.example.videodemo.zip.ZipProgressUtil; import com.example.videodemo.zip.ZipProgressUtil.ZipListener; import android.app.Activity; import android.os.Bundle; import android.widget.ProgressBar; public class MainActivity extends Activity {   private ProgressBar progressBar1;   @Override   protected void onCreate(Bundle savedInstanceState) {     super.onCreate(savedInstanceState);     setContentView(R.layout.activity_main);     progressBar1 = (ProgressBar) findViewById(R.id.progressBar1);     ZipProgressUtil.UnZipFile("解压文件的路径", "解压之后的路径", new ZipListener() {       public void zipSuccess() {       }       public void zipStart() {       }       public void zipProgress(int progress) {       }       public void zipFail() {       }     });   } }