Android zip文件下载和解压
jopen
11年前
下载：
DownLoaderTask.java
package com.johnny.testzipanddownload; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.net.MalformedURLException; import java.net.URL; import java.net.URLConnection; import android.app.ProgressDialog; import android.content.Context; import android.content.DialogInterface; import android.content.DialogInterface.OnCancelListener; import android.os.AsyncTask; import android.util.Log; public class DownLoaderTask extends AsyncTask<Void, Integer, Long> { private final String TAG = "DownLoaderTask"; private URL mUrl; private File mFile; private ProgressDialog mDialog; private int mProgress = 0; private ProgressReportingOutputStream mOutputStream; private Context mContext; public DownLoaderTask(String url,String out,Context context){ super(); if(context!=null){ mDialog = new ProgressDialog(context); mContext = context; } else{ mDialog = null; } try { mUrl = new URL(url); String fileName = new File(mUrl.getFile()).getName(); mFile = new File(out, fileName); Log.d(TAG, "out="+out+", name="+fileName+",mUrl.getFile()="+mUrl.getFile()); } catch (MalformedURLException e) { // TODO Auto-generated catch block e.printStackTrace(); } } @Override protected void onPreExecute() { // TODO Auto-generated method stub //super.onPreExecute(); if(mDialog!=null){ mDialog.setTitle("Downloading..."); mDialog.setMessage(mFile.getName()); mDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); mDialog.setOnCancelListener(new OnCancelListener() { @Override public void onCancel(DialogInterface dialog) { // TODO Auto-generated method stub cancel(true); } }); mDialog.show(); } } @Override protected Long doInBackground(Void... params) { // TODO Auto-generated method stub return download(); } @Override protected void onProgressUpdate(Integer... values) { // TODO Auto-generated method stub //super.onProgressUpdate(values); if(mDialog==null) return; if(values.length>1){ int contentLength = values[1]; if(contentLength==-1){ mDialog.setIndeterminate(true); } else{ mDialog.setMax(contentLength); } } else{ mDialog.setProgress(values[0].intValue()); } } @Override protected void onPostExecute(Long result) { // TODO Auto-generated method stub //super.onPostExecute(result); if(mDialog!=null&&mDialog.isShowing()){ mDialog.dismiss(); } if(isCancelled()) return; ((MainActivity)mContext).showUnzipDialog(); } private long download(){ URLConnection connection = null; int bytesCopied = 0; try { connection = mUrl.openConnection(); int length = connection.getContentLength(); if(mFile.exists()&&length == mFile.length()){ Log.d(TAG, "file "+mFile.getName()+" already exits!!"); return 0l; } mOutputStream = new ProgressReportingOutputStream(mFile); publishProgress(0,length); bytesCopied =copy(connection.getInputStream(),mOutputStream); if(bytesCopied!=length&&length!=-1){ Log.e(TAG, "Download incomplete bytesCopied="+bytesCopied+", length"+length); } mOutputStream.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } return bytesCopied; } private int copy(InputStream input, OutputStream output){ byte[] buffer = new byte[1024*8]; BufferedInputStream in = new BufferedInputStream(input, 1024*8); BufferedOutputStream out = new BufferedOutputStream(output, 1024*8); int count =0,n=0; try { while((n=in.read(buffer, 0, 1024*8))!=-1){ out.write(buffer, 0, n); count+=n; } out.flush(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ try { out.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } try { in.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } return count; } private final class ProgressReportingOutputStream extends FileOutputStream{ public ProgressReportingOutputStream(File file) throws FileNotFoundException { super(file); // TODO Auto-generated constructor stub } @Override public void write(byte[] buffer, int byteOffset, int byteCount) throws IOException { // TODO Auto-generated method stub super.write(buffer, byteOffset, byteCount); mProgress += byteCount; publishProgress(mProgress); } } } </div>
解压：
ZipExtractorTask .java </div> </div>
</div> </div> 来自：http://blog.csdn.net/heqiangflytosky/article/details/17757097
package com.johnny.testzipanddownload; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.util.Enumeration; import java.util.zip.ZipEntry; import java.util.zip.ZipException; import java.util.zip.ZipFile; import android.app.ProgressDialog; import android.content.Context; import android.content.DialogInterface; import android.content.DialogInterface.OnCancelListener; import android.os.AsyncTask; import android.util.Log; public class ZipExtractorTask extends AsyncTask<Void, Integer, Long> { private final String TAG = "ZipExtractorTask"; private final File mInput; private final File mOutput; private final ProgressDialog mDialog; private int mProgress = 0; private final Context mContext; private boolean mReplaceAll; public ZipExtractorTask(String in, String out, Context context, boolean replaceAll){ super(); mInput = new File(in); mOutput = new File(out); if(!mOutput.exists()){ if(!mOutput.mkdirs()){ Log.e(TAG, "Failed to make directories:"+mOutput.getAbsolutePath()); } } if(context!=null){ mDialog = new ProgressDialog(context); } else{ mDialog = null; } mContext = context; mReplaceAll = replaceAll; } @Override protected Long doInBackground(Void... params) { // TODO Auto-generated method stub return unzip(); } @Override protected void onPostExecute(Long result) { // TODO Auto-generated method stub //super.onPostExecute(result); if(mDialog!=null&&mDialog.isShowing()){ mDialog.dismiss(); } if(isCancelled()) return; } @Override protected void onPreExecute() { // TODO Auto-generated method stub //super.onPreExecute(); if(mDialog!=null){ mDialog.setTitle("Extracting"); mDialog.setMessage(mInput.getName()); mDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); mDialog.setOnCancelListener(new OnCancelListener() { @Override public void onCancel(DialogInterface dialog) { // TODO Auto-generated method stub cancel(true); } }); mDialog.show(); } } @Override protected void onProgressUpdate(Integer... values) { // TODO Auto-generated method stub //super.onProgressUpdate(values); if(mDialog==null) return; if(values.length>1){ int max=values[1]; mDialog.setMax(max); } else mDialog.setProgress(values[0].intValue()); } private long unzip(){ long extractedSize = 0L; Enumeration<ZipEntry> entries; ZipFile zip = null; try { zip = new ZipFile(mInput); long uncompressedSize = getOriginalSize(zip); publishProgress(0, (int) uncompressedSize); entries = (Enumeration<ZipEntry>) zip.entries(); while(entries.hasMoreElements()){ ZipEntry entry = entries.nextElement(); if(entry.isDirectory()){ continue; } File destination = new File(mOutput, entry.getName()); if(!destination.getParentFile().exists()){ Log.e(TAG, "make="+destination.getParentFile().getAbsolutePath()); destination.getParentFile().mkdirs(); } if(destination.exists()&&mContext!=null&&!mReplaceAll){ } ProgressReportingOutputStream outStream = new ProgressReportingOutputStream(destination); extractedSize+=copy(zip.getInputStream(entry),outStream); outStream.close(); } } catch (ZipException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ try { zip.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } return extractedSize; } private long getOriginalSize(ZipFile file){ Enumeration<ZipEntry> entries = (Enumeration<ZipEntry>) file.entries(); long originalSize = 0l; while(entries.hasMoreElements()){ ZipEntry entry = entries.nextElement(); if(entry.getSize()>=0){ originalSize+=entry.getSize(); } } return originalSize; } private int copy(InputStream input, OutputStream output){ byte[] buffer = new byte[1024*8]; BufferedInputStream in = new BufferedInputStream(input, 1024*8); BufferedOutputStream out = new BufferedOutputStream(output, 1024*8); int count =0,n=0; try { while((n=in.read(buffer, 0, 1024*8))!=-1){ out.write(buffer, 0, n); count+=n; } out.flush(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ try { out.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } try { in.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } return count; } private final class ProgressReportingOutputStream extends FileOutputStream{ public ProgressReportingOutputStream(File file) throws FileNotFoundException { super(file); // TODO Auto-generated constructor stub } @Override public void write(byte[] buffer, int byteOffset, int byteCount) throws IOException { // TODO Auto-generated method stub super.write(buffer, byteOffset, byteCount); mProgress += byteCount; publishProgress(mProgress); } } }
Main Activity
MainActivity.javapackage com.johnny.testzipanddownload; import android.os.Bundle; import android.os.Environment; import android.app.Activity; import android.app.AlertDialog; import android.content.DialogInterface; import android.content.DialogInterface.OnClickListener; import android.util.Log; import android.view.Menu; public class MainActivity extends Activity { private final String TAG="MainActivity"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Log.d(TAG, "Environment.getExternalStorageDirectory()="+Environment.getExternalStorageDirectory()); Log.d(TAG, "getCacheDir().getAbsolutePath()="+getCacheDir().getAbsolutePath()); showDownLoadDialog(); //doZipExtractorWork(); //doDownLoadWork(); } @Override public 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; } private void showDownLoadDialog(){ new AlertDialog.Builder(this).setTitle("确认") .setMessage("是否下载？") .setPositiveButton("是", new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub Log.d(TAG, "onClick 1 = "+which); doDownLoadWork(); } }) .setNegativeButton("否", new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub Log.d(TAG, "onClick 2 = "+which); } }) .show(); } public void showUnzipDialog(){ new AlertDialog.Builder(this).setTitle("确认") .setMessage("是否解压？") .setPositiveButton("是", new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub Log.d(TAG, "onClick 1 = "+which); doZipExtractorWork(); } }) .setNegativeButton("否", new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub Log.d(TAG, "onClick 2 = "+which); } }) .show(); } public void doZipExtractorWork(){ //ZipExtractorTask task = new ZipExtractorTask("/storage/usb3/system.zip", "/storage/emulated/legacy/", this, true); ZipExtractorTask task = new ZipExtractorTask("/storage/emulated/legacy/testzip.zip", "/storage/emulated/legacy/", this, true); task.execute(); } private void doDownLoadWork(){ DownLoaderTask task = new DownLoaderTask("http://192.168.9.155/johnny/testzip.zip", "/storage/emulated/legacy/", this); //DownLoaderTask task = new DownLoaderTask("http://192.168.9.155/johnny/test.h264", getCacheDir().getAbsolutePath()+"/", this); task.execute(); } }