Android表情符号问题(将"\uD83D\uDE04“转换为0x1F604)

Question

我可以通过这种方式how set emoji by unicode in android textview在文本视图中显示表情符号，但是如何将类似"uD83D\uDE04“的内容转换为代码点0x1F604("uD83D\uDE04”表示0x1F604)？

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Answer 1

做这样的事情。

将UTF-16转换为UTF-8

String text = new String("uD83D\uDE04".getBytes(), StandardCharsets.UTF_8);

获取代码点

int codepoint = text.codePointAt(0);

将其转换为Unicode

String yourUnicode="U+"+Integer.toHexString(codepoint)

Answer 2

我找到一个way:java.lang.Character.toCodePoint(字符高，字符低)

int ss1 = Integer.parseInt("d83d", 16);
int ss2 = Integer.parseInt("de04", 16);

char chars = Character.toChars(ss1)[0];
char chars2 = Character.toChars(ss2)[0];

int codepoint = Character.toCodePoint(chars, chars2);
String emojiString = new String(Character.toChars(codepoint));

Answer 3

多亏了@Henry，我找到了一个很容易获得emojiString的方法：

String ss1 = "d83d";
String ss2 = "de04";
int in1 = Integer.parseInt(ss1, 16);
int in2 = Integer.parseInt(ss2, 16);
String s1 = Character.toString((char)in1);//   http://stackoverflow.com/questions/5585919/creating-unicode-character-from-its-number
String s2 = Character.toString((char)in2);
String emojiString = s1+s2;