Java Android压缩文件
我已经尝试过搜索答案，但找不到任何答案，所以我正在发布。我正在尝试压缩文件，通过以下操作，我能够做到这一点。问题是，在本例中，文件名和文件路径是硬编码的。所以我试着根据需要修改代码 原始代码：Java Android压缩文件,java,android,file,zip,Java,Android,File,Zip,我已经尝试过搜索答案，但找不到任何答案，所以我正在发布。我正在尝试压缩文件，通过以下操作，我能够做到这一点。问题是，在本例中，文件名和文件路径是硬编码的。所以我试着根据需要修改代码 原始代码： // .... additional codes here String inputPath = Environment.getExternalStorageDirectory().getPath()+ "/TextFiles/"; String inputFile = "MyZip
// .... additional codes here
String inputPath = Environment.getExternalStorageDirectory().getPath()+ "/TextFiles/";
String inputFile = "MyZippedFiles.zip";
((Button) findViewById(R.id.button_zip))
.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
// declare an array for storing the files i.e the path of your source files
s[0] = inputPath + "/01.txt";
s[1] = inputPath + "/02.txt";
/**
* first parameter is the files, second parameter is zip file name
* then call the zip function
*/
ZipManager zipManager = new ZipManager();
zipManager.zip(s, inputPath + inputFile);
}
});
public class ZipManager {
private static final int BUFFER = 80000;
public void zip(String[] _files, String zipFileName) {
try {
BufferedInputStream origin = null;
FileOutputStream dest = new FileOutputStream(zipFileName);
ZipOutputStream out = new ZipOutputStream(new BufferedOutputStream(
dest));
byte data[] = new byte[BUFFER];
for (int i = 0; i < _files.length; i++) {
Log.v("Compress", "Adding: " + _files[i]);
FileInputStream fi = new FileInputStream(_files[i]);
origin = new BufferedInputStream(fi, BUFFER);
ZipEntry entry = new ZipEntry(_files[i].substring(_files[i].lastIndexOf("/") + 1));
out.putNextEntry(entry);
int count;
while ((count = origin.read(data, 0, BUFFER)) != -1) {
out.write(data, 0, count);
}
origin.close();
}
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
public class ZipManager {
private static final int BUFFER = 80000;
public void zip(String path, String zipFileName) {
try {
BufferedInputStream origin = null;
FileOutputStream dest = new FileOutputStream(zipFileName);
ZipOutputStream out = new ZipOutputStream(new BufferedOutputStream(dest));
byte data[] = new byte[BUFFER];
for (int i = 0; i < path.length(); i++) {
Log.v("Compress", "Adding: " + path);
FileInputStream fi = new FileInputStream(path);
origin = new BufferedInputStream(fi, BUFFER);
ZipEntry entry = new ZipEntry(path.substring(path.lastIndexOf("/") + 1));
out.putNextEntry(entry);
int count;
while ((count = origin.read(data, 0, BUFFER)) != -1) {
out.write(data, 0, count);
}
origin.close();
}
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
public class ZipManager {
private static final int BUFFER = 80000;
public void zip(String[] _files, String zipFileName) {
try {
BufferedInputStream origin = null;
FileOutputStream dest = new FileOutputStream(zipFileName);
ZipOutputStream out = new ZipOutputStream(new BufferedOutputStream(
dest));
byte data[] = new byte[BUFFER];
for (int i = 0; i < _files.length; i++) {
Log.v("Compress", "Adding: " + _files[i]);
FileInputStream fi = new FileInputStream(_files[i]);
origin = new BufferedInputStream(fi, BUFFER);
ZipEntry entry = new ZipEntry(_files[i].substring(_files[i].lastIndexOf("/") + 1));
out.putNextEntry(entry);
int count;
while ((count = origin.read(data, 0, BUFFER)) != -1) {
out.write(data, 0, count);
}
origin.close();
}
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
public class ZipManager {
private static final int BUFFER = 80000;
public void zip(String path, String zipFileName) {
try {
BufferedInputStream origin = null;
FileOutputStream dest = new FileOutputStream(zipFileName);
ZipOutputStream out = new ZipOutputStream(new BufferedOutputStream(dest));
byte data[] = new byte[BUFFER];
for (int i = 0; i < path.length(); i++) {
Log.v("Compress", "Adding: " + path);
FileInputStream fi = new FileInputStream(path);
origin = new BufferedInputStream(fi, BUFFER);
ZipEntry entry = new ZipEntry(path.substring(path.lastIndexOf("/") + 1));
out.putNextEntry(entry);
int count;
while ((count = origin.read(data, 0, BUFFER)) != -1) {
out.write(data, 0, count);
}
origin.close();
}
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
它正在创建压缩文件MyZippedFiles.zip，问题是，它不包含任何内容。文件大小为0。应该怎么做？TIA让我给出一个简单的代码来创建所选文件的zip文件
@Override
public void onClick(View view) {
File zipFile = new File(getFilesDir(), "zipImages.zip");
try {
FileOutputStream fileOutputStream = new FileOutputStream(zipFile);
zipFiles(imageFiles, fileOutputStream);
//Do whatever you want to do with zipFile
//for example
sendZipfile(zipFile);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
public void zipFiles(List<File> fileList, OutputStream os) throws IOException {
ZipOutputStream zos = new ZipOutputStream(new BufferedOutputStream(os));
try {
for (int i = 0; i < fileList.size(); ++i) {
File file = fileList.get(i);
String filename = file.getName();
byte[] bytes = readFile(file);
ZipEntry entry = new ZipEntry(filename);
zos.putNextEntry(entry);
zos.write(bytes);
zos.closeEntry();
}
} catch (IOException e) {
e.printStackTrace();
} finally {
zos.close();
}
}
public static byte[] readFile(File file) throws IOException {
// Open file
RandomAccessFile f = new RandomAccessFile(file, "r");
try {
// Get and check length
long longlength = f.length();
int length = (int) longlength;
if (length != longlength)
throw new IOException("File size >= 2 GB");
// Read file and return data
byte[] data = new byte[length];
f.readFully(data);
return data;
} finally {
f.close();
}
}
@覆盖
公共void onClick（视图）{
File zipFile=新文件（getFilesDir（），“zipImages.zip”）；
试一试{
FileOutputStream FileOutputStream=新的FileOutputStream（zipFile）；
ZipFile（图像文件、文件输出流）；
//用zipFile做任何你想做的事
//比如说
sendZipfile（zipFile）；
}catch（filenotfounde异常）{
e、 printStackTrace（）；
}捕获（IOE异常）{
e、 printStackTrace（）；
}捕获（例外e）{
e、 printStackTrace（）；
}
}
public void zipFiles（列表文件列表、输出流os）引发IOException{
ZipOutputStream zos=新的zipoutpstream（新的缓冲输出流（os））；
试一试{
对于（int i=0；i=2 GB”）；
//读取文件并返回数据
字节[]数据=新字节[长度]；
f、 准备好（数据）；
返回数据；
}最后{
f、 close（）；
}
}
@Override
public void onClick(View view) {
File zipFile = new File(getFilesDir(), "zipImages.zip");
try {
FileOutputStream fileOutputStream = new FileOutputStream(zipFile);
zipFiles(imageFiles, fileOutputStream);
//Do whatever you want to do with zipFile
//for example
sendZipfile(zipFile);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
public void zipFiles(List<File> fileList, OutputStream os) throws IOException {
ZipOutputStream zos = new ZipOutputStream(new BufferedOutputStream(os));
try {
for (int i = 0; i < fileList.size(); ++i) {
File file = fileList.get(i);
String filename = file.getName();
byte[] bytes = readFile(file);
ZipEntry entry = new ZipEntry(filename);
zos.putNextEntry(entry);
zos.write(bytes);
zos.closeEntry();
}
} catch (IOException e) {
e.printStackTrace();
} finally {
zos.close();
}
}
public static byte[] readFile(File file) throws IOException {
// Open file
RandomAccessFile f = new RandomAccessFile(file, "r");
try {
// Get and check length
long longlength = f.length();
int length = (int) longlength;
if (length != longlength)
throw new IOException("File size >= 2 GB");
// Read file and return data
byte[] data = new byte[length];
f.readFully(data);
return data;
} finally {
f.close();
}
}
@覆盖
公共void onClick（视图）{
File zipFile=新文件（getFilesDir（），“zipImages.zip”）；
试一试{
FileOutputStream FileOutputStream=新的FileOutputStream（zipFile）；
ZipFile（图像文件、文件输出流）；
//用zipFile做任何你想做的事
//比如说
sendZipfile（zipFile）；
}catch（filenotfounde异常）{
e、 printStackTrace（）；
}捕获（IOE异常）{
e、 printStackTrace（）；
}捕获（例外e）{
e、 printStackTrace（）；
}
}
public void zipFiles（列表文件列表、输出流os）引发IOException{
ZipOutputStream zos=新的zipoutpstream（新的缓冲输出流（os））；
试一试{
对于（int i=0；i=2 GB”）；
//读取文件并返回数据
字节[]数据=新字节[长度]；
f、 准备好（数据）；
返回数据；
}最后{
f、 close（）；
}
}