经常对一些文件,文件夹操作,自己写一个不是难事.但有个可以捡的应该也不是坏事.
将destFileName解压到mExtractToDir 目录：
public
void
extract(destFileName,mExtractToDir )
{
String fileName
=
new
String();
String destFileName
=
new
String();
//
do our own buffering; reuse the same
buffer
byte
[] buffer
=
new
byte
[
16384
];
try
{
ZipFile archive
=
new
ZipFile( mZipFile );
for
( Enumeration e
=
archive.entries(); e.hasMoreElements(); )
{
//
get the next entry in the archive
ZipEntry entry
=
(ZipEntry)e.nextElement();
if
(
!
entry.isDirectory() )
{
fileName
=
entry.getName();
fileName
=
fileName.replace(
'
/
'
, File.separatorChar);
destFileName
=
mExtractToDir
+
fileName;
File destFile
=
new
File(destFileName);
//
create the destination path, if needed
String parent
=
destFile.getParent();
if
( parent
!=
null
)
{
File parentFile
=
new
File(parent);
if
(
!
parentFile.exists() )
{
//
create the chain of subdirs to the file
parentFile.mkdirs();
}
}
//
get a stream of the archive entry's bytes
InputStream in
=
archive.getInputStream(entry);
//
open a stream to the destination
file OutputStream out
=
new
FileOutputStream(destFileName);
//
Repeat reading into buffer and writing buffer to file,
//
until done. Count will always be # bytes read, until
//
EOF when it is -1.
int
count;
while
( (count
=
in.read(buffer))
!=
-
1
)
{
out.write(buffer,
0
, count );
}
in.close(); out.close();
}
}
}
catch
( ZipException ze )
{
ze.printStackTrace();
}
catch
( NullPointerException npe )
{
npe.printStackTrace();
}
catch
( IOException ioe )
{
ioe.printStackTrace();
}
catch
( SecurityException se )
{
se.printStackTrace();
}
}
将某一文件夹的内容清空：
public
void
cleanImportDirectory(String iPath)
{
try
{
File theFile
=
new
File(iPath);
File allFiles[]
=
theFile.listFiles();
for
(
int
i
=
0
; i
<
allFiles.length; i
++
)
{
if
(allFiles[i].isDirectory())
{
cleanImportDirectory(allFiles[i].toString());
allFiles[i].delete();
}
else
{
allFiles[i].delete();
}
}
}
catch
(NullPointerException npe)
{
mLogger.severe(iPath
+
"
did not exist and was not cleaned!!
"
);
}
}
将某一文件夹的内容移到指定文件夹：
private
void
copyCourse(String iInFilePath, String iOutFilePath)
throws
IOException
{
try
{
String inDirName
=
iInFilePath;
inDirName.replace(
'
/
'
, java.io.File.separatorChar);
File tempFile
=
new
File(inDirName);
File[] fileNames
=
tempFile.listFiles();
String outDirName
=
iOutFilePath;
outDirName
=
outDirName.replace(
'
/
'
, java.io.File.separatorChar);
File tempDir
=
new
File(outDirName);
tempDir.mkdirs();
for
(
int
i
=
0
; i
<
fileNames.length; i
++
)
{
String tempString
=
outDirName
+
java.io.File.separatorChar
+
fileNames[i].getName();
if
(fileNames[i].isDirectory())
{
File dirToCreate
=
new
File(tempString);
dirToCreate.mkdirs();
copyCourse(fileNames[i].getAbsolutePath(), tempString);
}
else
{
BufferedInputStream in
=
new
BufferedInputStream(
new
FileInputStream(fileNames[i]));
BufferedOutputStream out
=
new
BufferedOutputStream(
new
FileOutputStream(tempString));
int
c;
while
((c
=
in.read())
!=
-
1
)
{
out.write(c);
}
in.close();
out.close();
}
}
}
catch
(IOException IOE)
{
IOE.printStackTrace();
}
我暂时只碰到了这三个...