How to convert string into unicode/utf for passing in a url?

Question

My string is:

ĐT70, Châu Linh, Tùng Ảnh, Đức Thọ, Hà Tĩnh, Vietnam.

While passing this text in a url query string, it is coming as:

ĐT70%2C+Châu+Linh%2C+Tùng+Ảnh%2C+Đức+Thọ%2C+Hà+Tĩnh%2C+Vietnam.

But I want it in this format:

\U0111\U01b0\U1eddng \U0110\U1eadp, Th\U00f4ng T\U1ef1, T\U00f9ng \U1ea2nh, \U0110\U1ee9c Th\U1ecd, H\U00e0 T\U0129nh, Vietnam.

How could I get that string in this format? Please answer.

Answer 1

After struggling finally i found solution.

 //String that you want to convert
  String mystring = "133 Phùng Hưng, Cửa Đông, Hoàn Kiếm, Hà Nội, Vietnam";

    //unicodeString is the expected output in unicode 
    String unicodeString = getUnicodeString(escapeUnicodeText(mystring));

   //i want to make small u into Capital from unicode String
  String resultUnicode = unicodeString.replace("\\u", "\\U");

    try {
        String text = URLEncoder.encode(mystring, "UTF-8");
        Log.v("currentDateTimeString", "text String:" + text);
    } catch (Exception e) {
        e.printStackTrace();
    }

Create method escapeUnicodeText to get your Unicode Text into unicode fromat for example if you pass input string ♫ é in escapeUnicodeText() you will get in unicode output like \u266b \u00e9

public String escapeUnicodeText(String input) {

    StringBuilder b = new StringBuilder(input.length());

    java.util.Formatter f = new java.util.Formatter(b);

    for (char c : input.toCharArray()) {
        if (c < 128) {
            b.append(c);
        } else {
            f.format("\\u%04x", (int) c);
        }
    }

    return b.toString();
}

Pass output of escapeUnicodeText into getUnicodeString() you will get your expected result like \U0111\U01b0\U1eddng \U0110\U1eadp, Th\U00f4ng T\U1ef1, T\U00f9ng \U1ea2nh, \U0110\U1ee9c Th\U1ecd, H\U00e0 T\U0129nh, Vietnam.

 public String getUnicodeString(String myString) {
    String text = "";
    try {

         byte[] utf8Bytes = myString.getBytes("UTF8");
        text = new String(utf8Bytes, "UTF8");

    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
    return text;
}