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It is similar to the basic encoder above. URL encoding uses the URL and Filename safe Base64.

package 64īase64.getEncoder().withoutPadding().encodeToString(oriString.toByteArray()) To encode Base64 without padding, we call withoutPadding() that returns an encoder instance that encodes without adding any padding character at the end of the encoded byte data. If it’s not, pad characters (‘=’) will be added to the output.įor more details about padding in Base64, please visit the answer on StackOverflow. In Base64 encoding, the length of output encoded String must be a multiple of 3. Val decodedBytes = Base64.getDecoder().decode(encodedString) use constructor of the String class on ByteArray above to get String result.call decode() method that returns a ByteArray.use Base64.getDecoder() to get Decoder that decodes using the Basic type base64 encoding scheme.Val encodedString: String = Base64.getEncoder().encodeToString(oriString.toByteArray()) call Encoder encodeToString() method on ByteArray above.use Base64.getEncoder() static method to get Encoder that encodes using the Basic type Base64 encoding scheme.get ByteArray from original String using toByteArray() method.– Decoding: not contain line separators or other characters outside the Base64 Alphabet. – Encoding: result must be represented in lines of no more than 76 characters each and use a carriage return followed by a linefeed (\r\n). – Uses the “The Base64 Alphabet” as specified in Table 1 of RFC 2045 for encoding and decoding operation. – Uses the “URL and Filename safe Base64 Alphabet” as specified in Table 2 of RFC 4648 for encoding and decoding. – Decoding: not contain characters outside the Base64 Alphabet. – Encoding: not add any line feed (line separator) character. – Uses “The Base64 Alphabet” as specified in Table 1 of RFC 4648 and RFC 2045 for encoding and decoding operation. This library supports the following types of Base64 as specified in RFC 4648 and RFC 2045: Let’s implement these steps with the libraries in the next sections. We’re gonna import one of these libraries that support Base64 Encoding and Decoding: convert the ByteArray into String object using String constructor.retrieve ByteArray from Base64 String using decode method (depending on library).call encode method (depending on library) to get Base64 String from ByteArray above.convert String to ByteArray using toByteArray() method.This is step by step to encode and decode with Kotlin Base64.