如何将十进制代码点转换为UTF-16十六进制（Java语法）？

Question

I have keycode = 57430

<Key android:codes="57430" android:keyIcon="@drawable/e056" />

How to convert decimal into UTF-16 Hex 0xE056

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Answer 1

When you say "into UTF-16 Hex 0xE056 ", it's unclear whether you mean the string 0xE056 or the char character with that value.

To convert a string 57430 to an integer:

int value = Integer.parseInt("57430");

To convert to hex string:

String hex = Integer.toHexString(value); // e056

String hex = Integer.toHexString(value).toUpperCase(); // E056

String hex = String.format("0x%04x", value); // 0xe056

String hex = String.format("0x%04X", value); // 0xE056

To convert to char :

char ch = (char)value; // Only for 0-65535

char[] ch = Character.toChars(value); // For any codepoint

To convert to String :

String symbol = new String(Character.toChars(value)); // For any codepoint