public static String decode(String unicodeStr) {
	if (unicodeStr == null) {
		return null;
	}
	StringBuffer retBuf = new StringBuffer();
	int maxLoop = unicodeStr.length();
	for (int i = 0; i < maxLoop; i++) {
		if (unicodeStr.charAt(i) == '\\') {
			if ((i < maxLoop - 5) && ((unicodeStr.charAt(i + 1) == 'u') || (unicodeStr.charAt(i + 1) == 'U')))
				try {
					retBuf.append((char) Integer.parseInt(unicodeStr.substring(i + 2, i + 6), 16));
					i += 5;
				} catch (NumberFormatException localNumberFormatException) {
					retBuf.append(unicodeStr.charAt(i));
				}
			else
				retBuf.append(unicodeStr.charAt(i));
		} else {
			retBuf.append(unicodeStr.charAt(i));
		}
	}
	return retBuf.toString();
}

Android_Unicode码转为汉字