Answers for "encode to utf8 react native"

utf8 encode php

$a = "Não";
  
echo utf8_encode($a);

encode file to utf-8 in java

String charset = "ISO-8859-1"; // or what corresponds
  BufferedReader in = new BufferedReader( 
      new InputStreamReader (new FileInputStream(file), charset));
  String line;
  while( (line = in.readLine()) != null) { 
    ....
  }