解压的工具类
代码语言：javascript复制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();
}
} 解压线程
代码语言：javascript复制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;
}
} 界面调用方法.我使用的是静态的方法,方便,可以改成非静态的.看个人需求,//注意了,因为解压是放在线程中执行的,所以界面刷新的话,需要使用handler来刷新界面调用还是比较方便的
注意 :调用的方法传入的路径:
1:是压缩文件的全路径 /storage/reeman/1234.zip
2:解压文件的路径(非全路径) /storage/reeman/zip
代码语言：javascript复制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() {
}
});
}
} 总结
以上所述是小编给大家介绍的Android实现文件解压带进度条功能，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对ZaLou.Cn网站的支持！
