public class GZIPInputStream
extends InflaterInputStream
| java.lang.Object | ||||
| ↳ | java.io.InputStream | |||
| ↳ | java.io.FilterInputStream | |||
| ↳ | java.util.zip.InflaterInputStream | |||
| ↳ | java.util.zip.GZIPInputStream | |||
该类实现了用于读取GZIP文件格式的压缩数据的流过滤器。
也可以看看：
Constants |
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|---|---|
int |
GZIP_MAGIC GZIP标题幻数。 |
Fields |
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protected CRC32 |
crc CRC-32用于未压缩的数据。 |
protected boolean |
eos 表示输入流的结束。 |
Inherited fields |
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 From class java.util.zip.InflaterInputStream
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From class java.io.FilterInputStream
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Public constructors |
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GZIPInputStream(InputStream in, int size) 用指定的缓冲区大小创建一个新的输入流。 |
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GZIPInputStream(InputStream in) 用默认缓冲区大小创建一个新的输入流。 |
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Public methods |
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void |
close() 关闭此输入流并释放与该流关联的所有系统资源。 |
int |
read(byte[] buf, int off, int len) 将未压缩的数据读入一个字节数组。 |
Inherited methods |
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From class java.util.zip.InflaterInputStream
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From class java.io.FilterInputStream
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From class java.io.InputStream
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From class java.lang.Object
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From interface java.io.Closeable
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From interface java.lang.AutoCloseable
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GZIPInputStream (InputStream in, int size)
用指定的缓冲区大小创建一个新的输入流。
| Parameters | |
|---|---|
in |
InputStream: the input stream |
size |
int: the input buffer size |
| Throws | |
|---|---|
ZipException |
if a GZIP format error has occurred or the compression method used is unsupported |
IOException |
if an I/O error has occurred |
IllegalArgumentException |
if size is <= 0 |
GZIPInputStream (InputStream in)
用默认缓冲区大小创建一个新的输入流。
| Parameters | |
|---|---|
in |
InputStream: the input stream |
| Throws | |
|---|---|
ZipException |
if a GZIP format error has occurred or the compression method used is unsupported |
IOException |
if an I/O error has occurred |
void close ()
关闭此输入流并释放与该流关联的所有系统资源。
| Throws | |
|---|---|
IOException |
if an I/O error has occurred |
Android开发手册
int read (byte[] buf,
int off,
int len)
将未压缩的数据读入一个字节数组。 如果len不为零，该方法将阻塞，直到某些输入可以解压缩为止; 否则，不读取字节并返回0 。
| Parameters | |
|---|---|
buf |
byte: the buffer into which the data is read |
off |
int: the start offset in the destination array b |
len |
int: the maximum number of bytes read |
| Returns | |
|---|---|
int |
the actual number of bytes read, or -1 if the end of the compressed input stream is reached |
| Throws | |
|---|---|
NullPointerException |
If buf is null. |
IndexOutOfBoundsException |
If off is negative, len is negative, or len is greater than buf.length - off |
ZipException |
if the compressed input data is corrupt. |
IOException |
if an I/O error has occurred. |