string decode utf-8

Question

How can I decode an utf-8 string with android  I tried with this commands but output is the same of input   URLDecoder decode  hello amp         UTF-8     new String  hello amp         UTF-8     EntityUtils toString  hello amp         utf-8

User · Answer

Try looking at decode string encoded in utf-8 format in android but it doesn t look like your string is encoded with anything particular  What do you think the output should be

User · Answer

the core functions are getBytes String charset  and new String byte   data   you can use these functions to do UTF-8 decoding   UTF-8 decoding actually is a string to string conversion  the intermediate buffer is a byte array  since the target is an UTF-8 string  so the only parameter for new String   is the byte array  which calling is equal to new String bytes   UTF-8    Then the key is the parameter for input encoded string to get internal byte array  which you should know beforehand  If you don t  guess the most possible one   ISO-8859-1  is a good guess for English user   The decoding sentence should be   String decoded   new String encoded getBytes  ISO-8859-1

User · Answer

A string needs no encoding  It is simply a sequence of Unicode characters   You need to encode when you want to turn a String into a sequence of bytes  The charset the you choose  UTF-8  cp1255  etc   determines the Character- Byte mapping  Note that a character is not necessarily translated into a single byte  In most charsets  most Unicode characters are translated to at least two bytes   Encoding of a String is carried out by   String s1    some text   byte   bytes   s1 getBytes  UTF-8       Charset to encode into   You need to decode when         you have   sequence of bytes and you want to turn them into a String  When y u d  that you need to specify  again  the charset with which the byt s were originally encoded  otherwise you ll end up with garbl d t xt    Decoding   String s2   new String bytes   UTF-8       Charset with which bytes were encoded    If you want to understand this better  a great text is  The Absolute Minimum Every Software Developer Absolutely  Positively Must Know About Unicode and Character Sets  No Excuses

[java] string decode utf-8

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