borrow.android.util

类 Base64

borrow.android.util.Base64

public class Base64

Utilities for encoding and decoding the Base64 representation of binary data. See RFCs 2045 and 3548.

另请参阅:

2045, 3548

字段概要

字段

限定符和类型	字段和说明
static int	CRLF Encoder flag bit to indicate lines should be terminated with a CRLF pair instead of just an LF. Has no effect if NO_WRAP is specified as well.
static int	DEFAULT Default values for encoder/decoder flags.
static int	NO_CLOSE Flag to pass to Base64OutputStream to indicate that it should not close the output stream it is wrapping when it itself is closed.
static int	NO_PADDING Encoder flag bit to omit the padding '=' characters at the end of the output (if any).
static int	NO_WRAP Encoder flag bit to omit all line terminators (i.e., the output will be on one long line).
static int	URL_SAFE Encoder/decoder flag bit to indicate using the "URL and filename safe" variant of Base64 (see RFC 3548 section 4) where - and _ are used in place of + and /.

方法概要

限定符和类型	方法和说明
static kotlin.Array[]	decode(java.lang.String str, int flags) Decode the Base64-encoded data in input and return the data in a new byte array.
static kotlin.Array[]	decode(kotlin.Array[] input, int flags) Decode the Base64-encoded data in input and return the data in a new byte array.
static kotlin.Array[]	decode(kotlin.Array[] input, int offset, int len, int flags) Decode the Base64-encoded data in input and return the data in a new byte array.
static kotlin.Array[]	encode(kotlin.Array[] input, int flags) Base64-encode the given data and return a newly allocated byte[] with the result.
static kotlin.Array[]	encode(kotlin.Array[] input, int offset, int len, int flags) Base64-encode the given data and return a newly allocated byte[] with the result.
static java.lang.String	encodeToString(kotlin.Array[] input, int flags) Base64-encode the given data and return a newly allocated String with the result.
static java.lang.String	encodeToString(kotlin.Array[] input, int offset, int len, int flags) Base64-encode the given data and return a newly allocated String with the result.

字段详细资料

DEFAULT

public static int DEFAULT

Default values for encoder/decoder flags.

另请参阅:

常量字段值

NO_PADDING

public static int NO_PADDING

Encoder flag bit to omit the padding '=' characters at the end of the output (if any).

另请参阅:

常量字段值

NO_WRAP

public static int NO_WRAP

Encoder flag bit to omit all line terminators (i.e., the output will be on one long line).

另请参阅:

常量字段值

CRLF

public static int CRLF

Encoder flag bit to indicate lines should be terminated with a CRLF pair instead of just an LF. Has no effect if NO_WRAP is specified as well.

另请参阅:

常量字段值

URL_SAFE

public static int URL_SAFE

Encoder/decoder flag bit to indicate using the "URL and filename safe" variant of Base64 (see RFC 3548 section 4) where - and _ are used in place of + and /.

另请参阅:

常量字段值

NO_CLOSE

public static int NO_CLOSE

Flag to pass to Base64OutputStream to indicate that it should not close the output stream it is wrapping when it itself is closed.

另请参阅:

常量字段值

方法详细资料

decode

public static kotlin.Array[] decode(java.lang.String str,
                                    int flags)

Decode the Base64-encoded data in input and return the data in a new byte array.

The padding '=' characters at the end are considered optional, but if any are present, there must be the correct number of them.

参数:

str - org.jetbrains.dokka.NodeRenderContent@595273ef: the input String to decode, which is converted to bytes using the default charset

flags - org.jetbrains.dokka.NodeRenderContent@1fdc461f: controls certain features of the decoded output. Pass DEFAULT to decode standard Base64.

抛出:

IllegalArgumentException - if the input contains incorrect padding

decode

public static kotlin.Array[] decode(kotlin.Array[] input,
                                    int flags)

Decode the Base64-encoded data in input and return the data in a new byte array.

The padding '=' characters at the end are considered optional, but if any are present, there must be the correct number of them.

参数:

input - org.jetbrains.dokka.NodeRenderContent@69454d21: the input array to decode

flags - org.jetbrains.dokka.NodeRenderContent@14e3651d: controls certain features of the decoded output. Pass DEFAULT to decode standard Base64.

抛出:

IllegalArgumentException - if the input contains incorrect padding

decode

public static kotlin.Array[] decode(kotlin.Array[] input,
                                    int offset,
                                    int len,
                                    int flags)

Decode the Base64-encoded data in input and return the data in a new byte array.

The padding '=' characters at the end are considered optional, but if any are present, there must be the correct number of them.

参数:

input - org.jetbrains.dokka.NodeRenderContent@5ee4a165: the data to decode

offset - org.jetbrains.dokka.NodeRenderContent@2375e818: the position within the input array at which to start

len - org.jetbrains.dokka.NodeRenderContent@601a9512: the number of bytes of input to decode

flags - org.jetbrains.dokka.NodeRenderContent@6fdecf81: controls certain features of the decoded output. Pass DEFAULT to decode standard Base64.

抛出:

IllegalArgumentException - if the input contains incorrect padding

encodeToString

public static java.lang.String encodeToString(kotlin.Array[] input,
                                              int flags)

Base64-encode the given data and return a newly allocated String with the result.

参数:

input - org.jetbrains.dokka.NodeRenderContent@14cab496: the data to encode

flags - org.jetbrains.dokka.NodeRenderContent@18f3ab3f: controls certain features of the encoded output. Passing DEFAULT results in output that adheres to RFC 2045.

encodeToString

public static java.lang.String encodeToString(kotlin.Array[] input,
                                              int offset,
                                              int len,
                                              int flags)

Base64-encode the given data and return a newly allocated String with the result.

参数:

input - org.jetbrains.dokka.NodeRenderContent@2c751f36: the data to encode

offset - org.jetbrains.dokka.NodeRenderContent@35ce7ffe: the position within the input array at which to start

len - org.jetbrains.dokka.NodeRenderContent@74e113d5: the number of bytes of input to encode

flags - org.jetbrains.dokka.NodeRenderContent@71cee425: controls certain features of the encoded output. Passing DEFAULT results in output that adheres to RFC 2045.

encode

public static kotlin.Array[] encode(kotlin.Array[] input,
                                    int flags)

Base64-encode the given data and return a newly allocated byte[] with the result.

参数:

input - org.jetbrains.dokka.NodeRenderContent@75c6d985: the data to encode

flags - org.jetbrains.dokka.NodeRenderContent@33b1694c: controls certain features of the encoded output. Passing DEFAULT results in output that adheres to RFC 2045.

encode

public static kotlin.Array[] encode(kotlin.Array[] input,
                                    int offset,
                                    int len,
                                    int flags)

Base64-encode the given data and return a newly allocated byte[] with the result.

参数:

input - org.jetbrains.dokka.NodeRenderContent@4fb2ab54: the data to encode

offset - org.jetbrains.dokka.NodeRenderContent@49db814b: the position within the input array at which to start

len - org.jetbrains.dokka.NodeRenderContent@a926304: the number of bytes of input to encode

flags - org.jetbrains.dokka.NodeRenderContent@32d18013: controls certain features of the encoded output. Passing DEFAULT results in output that adheres to RFC 2045.