Added in API level 1

ZipFile

open class ZipFile : Closeable

kotlin.Any
↳	java.util.zip.ZipFile

Known Direct Subclasses

JarFile

The JarFile class is used to read the contents of a jar file from any file that can be opened with java.io.RandomAccessFile.

This class is used to read entries from a zip file.

Unless otherwise noted, passing a null argument to a constructor or method in this class will cause a NullPointerException to be thrown.

Summary

Constants
static Int	`CENATT` Central directory (CEN) header internal file attributes field offset.
static Int	`CENATX` Central directory (CEN) header external file attributes field offset.
static Int	`CENCOM` Central directory (CEN) header comment length field offset.
static Int	`CENCRC` Central directory (CEN) header uncompressed file crc-32 value field offset.
static Int	`CENDSK` Central directory (CEN) header disk number start field offset.
static Int	`CENEXT` Central directory (CEN) header extra field length field offset.
static Int	`CENFLG` Central directory (CEN) header encrypt, decrypt flags field offset.
static Int	`CENHDR` Central directory (CEN) header size in bytes (including signature).
static Int	`CENHOW` Central directory (CEN) header compression method field offset.
static Int	`CENLEN` Central directory (CEN) header uncompressed size field offset.
static Int	`CENNAM` Central directory (CEN) header filename length field offset.
static Int	`CENOFF` Central directory (CEN) header LOC header offset field offset.
static Long	`CENSIG` Central directory (CEN) header signature.
static Int	`CENSIZ` Central directory (CEN) header compressed size field offset.
static Int	`CENTIM` Central directory (CEN) header modification time field offset.
static Int	`CENVEM` Central directory (CEN) header version made by field offset.
static Int	`CENVER` Central directory (CEN) header version needed to extract field offset.
static Int	`ENDCOM` End of central directory (END) header zip file comment length field offset.
static Int	`ENDHDR` End of central directory (END) header size in bytes (including signature).
static Int	`ENDOFF` End of central directory (END) header offset for the first CEN header field offset.
static Long	`ENDSIG` End of central directory (END) header signature.
static Int	`ENDSIZ` End of central directory (END) header central directory size in bytes field offset.
static Int	`ENDSUB` End of central directory (END) header number of entries on this disk field offset.
static Int	`ENDTOT` End of central directory (END) header total number of entries field offset.
static Int	`EXTCRC` Extra local (EXT) header uncompressed file crc-32 value field offset.
static Int	`EXTHDR` Extra local (EXT) header size in bytes (including signature).
static Int	`EXTLEN` Extra local (EXT) header uncompressed size field offset.
static Long	`EXTSIG` Extra local (EXT) header signature.
static Int	`EXTSIZ` Extra local (EXT) header compressed size field offset.
static Int	`LOCCRC` Local file (LOC) header uncompressed file crc-32 value field offset.
static Int	`LOCEXT` Local file (LOC) header extra field length field offset.
static Int	`LOCFLG` Local file (LOC) header general purpose bit flag field offset.
static Int	`LOCHDR` Local file (LOC) header size in bytes (including signature).
static Int	`LOCHOW` Local file (LOC) header compression method field offset.
static Int	`LOCLEN` Local file (LOC) header uncompressed size field offset.
static Int	`LOCNAM` Local file (LOC) header filename length field offset.
static Long	`LOCSIG` Local file (LOC) header signature.
static Int	`LOCSIZ` Local file (LOC) header compressed size field offset.
static Int	`LOCTIM` Local file (LOC) header modification time field offset.
static Int	`LOCVER` Local file (LOC) header version needed to extract field offset.
static Int	`OPEN_DELETE` Mode flag to open a zip file and mark it for deletion.
static Int	`OPEN_READ` Mode flag to open a zip file for reading.

Public constructors
`ZipFile(file: File!)` Opens a ZIP file for reading given the specified File object.
`ZipFile(file: File!, mode: Int)` Opens a new `ZipFile` to read from the specified `File` object in the specified mode.
`ZipFile(file: File!, mode: Int, charset: Charset!)` Opens a new `ZipFile` to read from the specified `File` object in the specified mode.
`ZipFile(file: File!, charset: Charset!)` Opens a ZIP file for reading given the specified File object.
`ZipFile(name: String!)` Opens a zip file for reading.
`ZipFile(name: String!, charset: Charset!)` Opens a zip file for reading.

Public methods
open Unit	`close()` Closes the ZIP file.
open Enumeration<out ZipEntry!>!	`entries()` Returns an enumeration of the ZIP file entries.
open String!	`getComment()` Returns the zip file comment, or null if none.
open ZipEntry!	`getEntry(name: String!)` Returns the zip file entry for the specified name, or null if not found.
open InputStream!	`getInputStream(entry: ZipEntry!)` Returns an input stream for reading the contents of the specified zip file entry.
open String!	`getName()` Returns the path name of the ZIP file.
open Int	`size()` Returns the number of entries in the ZIP file.
open Stream<out ZipEntry!>!	`stream()` Returns an ordered `Stream` over the ZIP file entries.

Constants

CENATT

Added in API level 21

static val CENATT: Int

Central directory (CEN) header internal file attributes field offset.

Value: 36

CENATX

Added in API level 21

static val CENATX: Int

Central directory (CEN) header external file attributes field offset.

Value: 38

CENCOM

Added in API level 21

static val CENCOM: Int

Central directory (CEN) header comment length field offset.

Value: 32

CENCRC

Added in API level 21

static val CENCRC: Int

Central directory (CEN) header uncompressed file crc-32 value field offset.

Value: 16

CENDSK

Added in API level 21

static val CENDSK: Int

Central directory (CEN) header disk number start field offset.

Value: 34

CENEXT

Added in API level 21

static val CENEXT: Int

Central directory (CEN) header extra field length field offset.

Value: 30

CENFLG

Added in API level 21

static val CENFLG: Int

Central directory (CEN) header encrypt, decrypt flags field offset.

Value: 8

CENHDR

Added in API level 21

static val CENHDR: Int

Central directory (CEN) header size in bytes (including signature).

Value: 46

CENHOW

Added in API level 21

static val CENHOW: Int

Central directory (CEN) header compression method field offset.

Value: 10

CENLEN

Added in API level 21

static val CENLEN: Int

Central directory (CEN) header uncompressed size field offset.

Value: 24

CENNAM

Added in API level 21

static val CENNAM: Int

Central directory (CEN) header filename length field offset.

Value: 28

CENOFF

Added in API level 21

static val CENOFF: Int

Central directory (CEN) header LOC header offset field offset.

Value: 42

CENSIG

Added in API level 21

static val CENSIG: Long

Central directory (CEN) header signature.

Value: 33639248L

CENSIZ

Added in API level 21

static val CENSIZ: Int

Central directory (CEN) header compressed size field offset.

Value: 20

CENTIM

Added in API level 21

static val CENTIM: Int

Central directory (CEN) header modification time field offset.

Value: 12

CENVEM

Added in API level 21

static val CENVEM: Int

Central directory (CEN) header version made by field offset.

Value: 4

CENVER

Added in API level 21

static val CENVER: Int

Central directory (CEN) header version needed to extract field offset.

Value: 6

ENDCOM

Added in API level 21

static val ENDCOM: Int

End of central directory (END) header zip file comment length field offset.

Value: 20

ENDHDR

Added in API level 21

static val ENDHDR: Int

End of central directory (END) header size in bytes (including signature).

Value: 22

ENDOFF

Added in API level 21

static val ENDOFF: Int

End of central directory (END) header offset for the first CEN header field offset.

Value: 16

ENDSIG

Added in API level 21

static val ENDSIG: Long

End of central directory (END) header signature.

Value: 101010256L

ENDSIZ

Added in API level 21

static val ENDSIZ: Int

End of central directory (END) header central directory size in bytes field offset.

Value: 12

ENDSUB

Added in API level 21

static val ENDSUB: Int

End of central directory (END) header number of entries on this disk field offset.

Value: 8

ENDTOT

Added in API level 21

static val ENDTOT: Int

End of central directory (END) header total number of entries field offset.

Value: 10

EXTCRC

Added in API level 21

static val EXTCRC: Int

Extra local (EXT) header uncompressed file crc-32 value field offset.

Value: 4

EXTHDR

Added in API level 21

static val EXTHDR: Int

Extra local (EXT) header size in bytes (including signature).

Value: 16

EXTLEN

Added in API level 21

static val EXTLEN: Int

Extra local (EXT) header uncompressed size field offset.

Value: 12

EXTSIG

Added in API level 21

static val EXTSIG: Long

Extra local (EXT) header signature.

Value: 134695760L

EXTSIZ

Added in API level 21

static val EXTSIZ: Int

Extra local (EXT) header compressed size field offset.

Value: 8

LOCCRC

Added in API level 21

static val LOCCRC: Int

Local file (LOC) header uncompressed file crc-32 value field offset.

Value: 14

LOCEXT

Added in API level 21

static val LOCEXT: Int

Local file (LOC) header extra field length field offset.

Value: 28

LOCFLG

Added in API level 21

static val LOCFLG: Int

Local file (LOC) header general purpose bit flag field offset.

Value: 6

LOCHDR

Added in API level 21

static val LOCHDR: Int

Local file (LOC) header size in bytes (including signature).

Value: 30

LOCHOW

Added in API level 21

static val LOCHOW: Int

Local file (LOC) header compression method field offset.

Value: 8

LOCLEN

Added in API level 21

static val LOCLEN: Int

Local file (LOC) header uncompressed size field offset.

Value: 22

LOCNAM

Added in API level 21

static val LOCNAM: Int

Local file (LOC) header filename length field offset.

Value: 26

LOCSIG

Added in API level 21

static val LOCSIG: Long

Local file (LOC) header signature.

Value: 67324752L

LOCSIZ

Added in API level 21

static val LOCSIZ: Int

Local file (LOC) header compressed size field offset.

Value: 18

LOCTIM

Added in API level 21

static val LOCTIM: Int

Local file (LOC) header modification time field offset.

Value: 10

LOCVER

Added in API level 21

static val LOCVER: Int

Local file (LOC) header version needed to extract field offset.

Value: 4

OPEN_DELETE

Added in API level 1

static val OPEN_DELETE: Int

Mode flag to open a zip file and mark it for deletion. The file will be deleted some time between the moment that it is opened and the moment that it is closed, but its contents will remain accessible via the ZipFile object until either the close method is invoked or the virtual machine exits.

Value: 4

OPEN_READ

Added in API level 1

static val OPEN_READ: Int

Mode flag to open a zip file for reading.

Value: 1

Public constructors

ZipFile

Added in API level 1

ZipFile(file: File!)

Opens a ZIP file for reading given the specified File object.

The UTF-8 charset is used to decode the entry names and comments.

Parameters
`file`	File!: the ZIP file to be opened for reading

Exceptions
`java.util.zip.ZipException`	if a ZIP format error has occurred
`java.io.IOException`	if an I/O error has occurred

ZipFile

Added in API level 1

ZipFile(
    file: File!, 
    mode: Int)

Opens a new ZipFile to read from the specified File object in the specified mode. The mode argument must be either OPEN_READ or OPEN_READ | OPEN_DELETE.

First, if there is a security manager, its checkRead method is called with the name argument as its argument to ensure the read is allowed.

The UTF-8 charset is used to decode the entry names and comments

Parameters
`file`	File!: the ZIP file to be opened for reading
`mode`	Int: the mode in which the file is to be opened

Exceptions
`java.util.zip.ZipException`	if a ZIP format error has occurred
`java.io.IOException`	if an I/O error has occurred
`java.lang.SecurityException`	if a security manager exists and its `checkRead` method doesn't allow read access to the file, or its `checkDelete` method doesn't allow deleting the file when the `OPEN_DELETE` flag is set.
`java.lang.IllegalArgumentException`	if the `mode` argument is invalid

See Also

java.lang.SecurityManager#checkRead(java.lang.String)

ZipFile

Added in API level 24

ZipFile(
    file: File!, 
    mode: Int, 
    charset: Charset!)

Opens a new ZipFile to read from the specified File object in the specified mode. The mode argument must be either OPEN_READ or OPEN_READ | OPEN_DELETE.

First, if there is a security manager, its checkRead method is called with the name argument as its argument to ensure the read is allowed.

Parameters
`file`	File!: the ZIP file to be opened for reading
`mode`	Int: the mode in which the file is to be opened
`charset`	Charset!: the charset to be used to decode the ZIP entry name and comment that are not encoded by using UTF-8 encoding (indicated by entry's general purpose flag).

Exceptions
`java.util.zip.ZipException`	if a ZIP format error has occurred
`java.io.IOException`	if an I/O error has occurred
`java.lang.SecurityException`	if a security manager exists and its `checkRead` method doesn't allow read access to the file,or its `checkDelete` method doesn't allow deleting the file when the `OPEN_DELETE` flag is set
`java.lang.IllegalArgumentException`	if the `mode` argument is invalid

See Also

java.lang.SecurityManager#checkRead(java.lang.String)

ZipFile

Added in API level 24

ZipFile(
    file: File!, 
    charset: Charset!)

Opens a ZIP file for reading given the specified File object.

Parameters
`file`	File!: the ZIP file to be opened for reading
`charset`	Charset!: The charset to be used to decode the ZIP entry name and comment (ignored if the language encoding bit of the ZIP entry's general purpose bit flag is set).

Exceptions
`java.util.zip.ZipException`	if a ZIP format error has occurred
`java.io.IOException`	if an I/O error has occurred

ZipFile

Added in API level 1

ZipFile(name: String!)

Opens a zip file for reading.

First, if there is a security manager, its checkRead method is called with the name argument as its argument to ensure the read is allowed.

The UTF-8 charset is used to decode the entry names and comments.

If the app targets Android U or above, zip file entry names containing ".." or starting with "/" passed here will throw a ZipException. For more details, see dalvik.system.ZipPathValidator.

Parameters
`name`	String!: the name of the zip file

Exceptions
`java.util.zip.ZipException`	if (1) a ZIP format error has occurred or (2) `targetSdkVersion >= BUILD.VERSION_CODES.UPSIDE_DOWN_CAKE` and (the `name` argument contains ".." or starts with "/").
`java.io.IOException`	if an I/O error has occurred
`java.lang.SecurityException`	if a security manager exists and its `checkRead` method doesn't allow read access to the file.

See Also

java.lang.SecurityManager#checkRead(java.lang.String)

ZipFile

Added in API level 24

ZipFile(
    name: String!, 
    charset: Charset!)

Opens a zip file for reading.

First, if there is a security manager, its checkRead method is called with the name argument as its argument to ensure the read is allowed.

Parameters
`name`	String!: the name of the zip file
`charset`	Charset!: the charset to be used to decode the ZIP entry name and comment that are not encoded by using UTF-8 encoding (indicated by entry's general purpose flag).

Exceptions
`java.util.zip.ZipException`	if a ZIP format error has occurred
`java.io.IOException`	if an I/O error has occurred
`java.lang.SecurityException`	if a security manager exists and its `checkRead` method doesn't allow read access to the file

See Also

java.lang.SecurityManager#checkRead(java.lang.String)

Public methods

close

Added in API level 1

open fun close(): Unit

Closes the ZIP file.

Closing this ZIP file will close all of the input streams previously returned by invocations of the getInputStream method.

Exceptions
`java.lang.Exception`	if this resource cannot be closed
`java.io.IOException`	if an I/O error has occurred

entries

Added in API level 1

open fun entries(): Enumeration<out ZipEntry!>!

Returns an enumeration of the ZIP file entries.

Return
`Enumeration<out ZipEntry!>!`	an enumeration of the ZIP file entries

Exceptions
`java.lang.IllegalStateException`	if the zip file has been closed

getComment

Added in API level 19

open fun getComment(): String!

Returns the zip file comment, or null if none.

Return
`String!`	the comment string for the zip file, or null if none

Exceptions
`java.lang.IllegalStateException`	if the zip file has been closed

getEntry

Added in API level 1

open fun getEntry(name: String!): ZipEntry!

Returns the zip file entry for the specified name, or null if not found.

Parameters
`name`	String!: the name of the entry

Return
`ZipEntry!`	the zip file entry, or null if not found

Exceptions
`java.lang.IllegalStateException`	if the zip file has been closed

getInputStream

Added in API level 1

open fun getInputStream(entry: ZipEntry!): InputStream!

Returns an input stream for reading the contents of the specified zip file entry.

Closing this ZIP file will, in turn, close all input streams that have been returned by invocations of this method.

Parameters
`entry`	ZipEntry!: the zip file entry

Return
`InputStream!`	the input stream for reading the contents of the specified zip file entry.

Exceptions
`java.util.zip.ZipException`	if a ZIP format error has occurred
`java.io.IOException`	if an I/O error has occurred
`java.lang.IllegalStateException`	if the zip file has been closed

getName

Added in API level 1

open fun getName(): String!

Returns the path name of the ZIP file.

Return
`String!`	the path name of the ZIP file

size

Added in API level 1

open fun size(): Int

Returns the number of entries in the ZIP file.

Return
`Int`	the number of entries in the ZIP file

Exceptions
`java.lang.IllegalStateException`	if the zip file has been closed

stream

Added in API level 26

open fun stream(): Stream<out ZipEntry!>!

Returns an ordered Stream over the ZIP file entries. Entries appear in the Stream in the order they appear in the central directory of the ZIP file.

Return
`Stream<out ZipEntry!>!`	an ordered `Stream` of entries in this ZIP file

Exceptions
`java.lang.IllegalStateException`	if the zip file has been closed