dart:convert

Base64Decoder class

Decoder for base64 encoded data.

This decoder accepts both base64 and base64url ("url-safe") encodings.

The encoding is required to be properly padded.

Throws a FormatException if the input is not valid base64 data.

Example:

final base64Decoder = base64.decoder;
const base64Bytes = 'RGFydCBpcyBvcGVuIHNvdXJjZQ==';
final decodedBytes = base64Decoder.convert(base64Bytes);
// decodedBytes: [68, 97, 114, 116, 32, 105, 115, 32, 111, 112, 101, 110,
// 32, 115, 111, 117, 114, 99, 101]

// Print as string using UTF-8 decoder
print(utf8.decode(decodedBytes)); // Dart is open source

Inheritance

• Object
• StreamTransformerBase<String, List<int>>
• Converter<String, List<int>>
• Base64Decoder

Constructors

Base64Decoder()

const

Properties

hashCode → int

read-only, inherited

The hash code for this object.

runtimeType → Type

read-only, inherited

A representation of the runtime type of the object.

Methods

bind(Stream<String> stream) → Stream<List<int>>

inherited

Transforms the provided stream.

cast<RS, RT>() → Converter<RS, RT>

inherited

Provides a Converter<RS, RT> view of this stream transformer.

convert(String input, [int start = 0, int? end]) → Uint8List

override

Decodes the characters of input from start to end as base64.

fuse<TT>(Converter<List<int>, TT> other) → Converter<String, TT>

inherited

Fuses this with other.

noSuchMethod(Invocation invocation) → dynamic

inherited

Invoked when a non-existent method or property is accessed.

startChunkedConversion(Sink<List<int>> sink) → StringConversionSink

override

Starts a chunked conversion.

toString() → String

inherited

A string representation of this object.

Operators

operator ==(Object other) → bool

inherited

The equality operator.