在网上找了一部分，然后根据自己的项目进行了改动。 1.没有采用自定义的表情发送模式，而是直接套用的Android系统里面的Emoji表情。 2.在表情发送的时候，也没有采用Unicode编码方式。因为项目原因，而是采用了如下简单的方式。

希望可以帮助大家，直接上使用的代码：

//提交之前的数据，使表情编程数字数组 [-16, -97, -104, -95]

String string;

public String filterEmoji(String source) {

if (!containsEmoji(source)) {

return source;// 如果不包含，直接返回

}

StringBuilder buf = null;

int len = source.length();

System.out.println("filter running len = " + len);

for (int i = 0; i < len; i++) {

char codePoint = source.charAt(i);

if (buf == null) {

buf = new StringBuilder(source.length());

}

if (!isEmojiCharacter(codePoint)) {

string = String.valueOf(codePoint);

} else {

try {

StringBuilder builder = new StringBuilder(2);

byte[] str = builder.append(String.valueOf(codePoint))

.append(String.valueOf(source.charAt(i+1)))

.toString().getBytes("UTF-8");

String strin = Arrays.toString(str);

String newString = strin.substring(1, strin.length() - 1);

string = "Γ"+newString+"Γ";

System.out.println("filters running newStr = " + string);

} catch (UnsupportedEncodingException e) {

e.printStackTrace();

}

i++;

}

buf.append(string+"⅞");

}

if (buf == null) {

return "";

} else {

if (buf.length() == len) {// 这里的意义在于尽可能少的toString，因为会重新生成字符串

buf = null;

return source;

} else {

System.out.println("filter running buf.toString() = " + buf.toString());

String bufStr = buf.toString();

String newBufStr= bufStr.substring(0, bufStr.length() - 1);

return newBufStr;

}

}

}

// 判别是否包含Emoji表情

private boolean containsEmoji(String str) {

int len = str.length();

for (int i = 0; i < len; i++) {

if (isEmojiCharacter(str.charAt(i))) {

return true;

}

}

return false;

}

private boolean isEmojiCharacter(char codePoint) {

return !((codePoint == 0x0) ||

(codePoint == 0x9) ||

(codePoint == 0xA) ||

(codePoint == 0xD) ||

((codePoint >= 0x20) && (codePoint <= 0xD7FF)) ||

((codePoint >= 0xE000) && (codePoint <= 0xFFFD)) ||

((codePoint >= 0x10000) && (codePoint <= 0x10FFFF)));

}

//得到服务器的数据之后进行解析，显示在UI上

String newsString;

public void setString(TextView textView,String string) {

StringBuilder stringBuilder = new StringBuilder();

String arrays[] = string.split("⅞");

for (int j = 0; j < arrays.length; j++) {

System.out.println("filter running arrays[] = "+arrays[j]);

String ss = arrays[j];

char char_ss = ss.charAt(0);

System.out.println("filter running String.valueOf(char_ss) = "+String.valueOf(char_ss));

if (String.valueOf(char_ss).equals("Γ")){

String new_SS = ss.substring(1, ss.length() - 1);

String strArrays[] = new_SS.split(", ");

byte[] chars = new byte[strArrays.length];

for (int i = 0; i < strArrays.length; ++i) {

System.out.println("strArrays[i]:" + strArrays[i]);

chars[i] = Byte.decode(strArrays[i]);

}

newsString = new String(chars);

}else{

newsString =ss;

}

stringBuilder.append(newsString);

System.out.println("filter running stringBuilder.toString() = "+stringBuilder.toString());

textView.setText(stringBuilder.toString());

}

}

这是我在项目中使用过的方法，希望可以帮助大家，如果有什么好的建议和意见，欢迎留言。