现在企业需要建设网站吗,几个做ppt的网站知乎,杭州设计公司logo,沈阳世纪兴网站建设可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效#xff0c;请关闭广告屏蔽插件后再试):问题:I put a zip file in the android assets. How do i extract the file in the android internal storage? I know how to get the file, but i dont know how t…可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效请关闭广告屏蔽插件后再试):问题:I put a zip file in the android assets. How do i extract the file in the android internal storage? I know how to get the file, but i dont know how to extract it. This is my code..Util zip ;zip new Util();zip.copyFileFromAsset(this, myfile.zip, getExternalStorage()/android/data/edu.binus.profile/);Thanks for helping :D回答1:This piece of code will help you....Just pass the zipfile location and the location where you want the extracted files to be saved to this class while making an object...and call unzip method...public class Decompress {private String zip;private String loc;public Decompress(String zipFile, String location) {zip zipFile;loc location;dirChecker();}public void unzip() {try {FileInputStream fin new FileInputStream(zip);ZipInputStream zin new ZipInputStream(fin);ZipEntry ze null;while ((ze zin.getNextEntry()) ! null) {Log.v(Decompress, Unzipping ze.getName());if(ze.isDirectory()) {dirChecker(ze.getName());} else {FileOutputStream fout new FileOutputStream(loc ze.getName());for (int c zin.read(); c ! -1; c zin.read()) {fout.write(c);}zin.closeEntry();fout.close();}}zin.close();} catch(Exception e) {Log.e(Decompress, unzip, e);}}private void dirChecker(String dir) {File f new File(_location dir);if(!f.isDirectory()) {f.mkdirs();}}}回答2:Based on Sreedev R solution,I added the option to read the file from assets and use buffer:package com.pixoneye.api.utils;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.util.zip.ZipEntry;import java.util.zip.ZipInputStream;import android.content.Context;import android.util.Log;public class Decompress {private static final int BUFFER_SIZE 1024 * 10;private static final String TAG Decompress;public static void unzipFromAssets(Context context, String zipFile, String destination) {try {if (destination null || destination.length() 0)destination context.getFilesDir().getAbsolutePath();InputStream stream context.getAssets().open(zipFile);unzip(stream, destination);} catch (IOException e) {e.printStackTrace();}}public static void unzip(String zipFile, String location) {try {FileInputStream fin new FileInputStream(zipFile);unzip(fin, location);} catch (FileNotFoundException e) {e.printStackTrace();}}public static void unzip(InputStream stream, String destination) {dirChecker(destination, );byte[] buffer new byte[BUFFER_SIZE];try {ZipInputStream zin new ZipInputStream(stream);ZipEntry ze null;while ((ze zin.getNextEntry()) ! null) {Log.v(TAG, Unzipping ze.getName());if (ze.isDirectory()) {dirChecker(destination, ze.getName());} else {File f new File(destination, ze.getName());if (!f.exists()) {boolean success f.createNewFile();if (!success) {Log.w(TAG, Failed to create file f.getName());continue;}FileOutputStream fout new FileOutputStream(f);int count;while ((count zin.read(buffer)) ! -1) {fout.write(buffer, 0, count);}zin.closeEntry();fout.close();}}}zin.close();} catch (Exception e) {Log.e(TAG, unzip, e);}}private static void dirChecker(String destination, String dir) {File f new File(destination, dir);if (!f.isDirectory()) {boolean success f.mkdirs();if (!success) {Log.w(TAG, Failed to create folder f.getName());}}}}回答3:Maybe you should try using a FileOutputStream in combination with an inputstream from the zip file. With a package file, this should work.To quote wordy from this question:PackageManager pm context.getPackageManager();String apkFile pm.getApplicationInfo(context.getPackageName(), 0).sourceDir;ZipFile zipFile new ZipFile(apkFile);ZipEntry entry zipFile.getEntry(assets/FILENAME);myInput zipFile.getInputStream(entry);myOutput new FileOutputStream(file);byte[] buffer new byte[1024*4];int length;int total 0;int counter 1;while ((length myInput.read(buffer)) 0) {total length;counter;if (counter % 32 0) {publishProgress(total);}myOutput.write(buffer, 0, length);}Looks like there may be problems with ProGuard but hopefully the code sample works for you.回答4:I havent tested yet,but while doing a project on OCR I came across this library,where there is method of unzipping a downloaded file from the net. The exact method for unzipping file is installZipFromAssets(String sourceFilename,File destinationDir,File destinationFile) found under this class.Hope this is what you are looking for回答5:You can also make use of the zip4j external library that provides additional features like encryption. Also, it has functions to extract files to a particular location provided the path.
