I received an unicode string to contain Emoji code, example: "U+1F44F" (from Emoji table : http://apps.timwhitlock.info/emoji/tables/unicode).
I want to convert this string to an Integer how can I do that ?
I tried this, but it crashs:
int hex = Integer.parseInt(unicodeStr, 16);
Thanks guys!
The comment of @flakes gives the correct answere. The U+ only indicates that the following codepoint (or hex number) is a Unicode. The value you want to convert into an Integer is the codepoint, so you have to omit the 2 first characters with .substring(2)
You wil obtain the following code:
int hex = Integer.parseInt(unicodeStr.substring(2), 16);Unicode numbers such "characters," code points, upto the 3 byte range, such as U+1F44F.
Java String has a constructor with code points.
int[] codepoints = { 0x1F44F };
String s = new String(codepoints, 0, codepoints.length);
public static String fromCodepoints(int... codepoints) {
return new String(codepoints, 0, codepoints.length);
}
s = fromCodepoints(0x1F44F, 0x102);
Java String contains Unicode as an internal array of chars. Every char '(2 bytes) being UTF-16 encoded. For lower ranges a char can be a code point. And U+0102 could be written as "\u0102" containing the char '\u0102'.
Note that emoji must be representable in the font.
Font font = ...
if (!font.canDisplay(0x1F44F)) {
...
}
U+and convert the1F44Ffrom hex to decimal.int hex = Integer.parseInt(unicodeStr.substring(2), 16);