代码如下：package com.push.notif;import java.lang.reflect.Field;import java.util.Random;import android.app.Activity;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.os.Bundle;import android.text.SpannableString;import android.text.TextUtils;import android.text.style.ImageSpan;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;public class ActivityA extends Activity implements OnClickListener { private Button showExpression; private EditText et; private Button cancel; @Override public void onCreate(Bundle savedInstanceState) {  // TODO Auto-generated method stub  super.onCreate(savedInstanceState);  setContentView(R.layout.maina);  et = (EditText) findViewById(R.id.et);// 显示图文的EditView  showExpression = (Button) findViewById(R.id.button);// 点击显示表情的的button  cancel = (Button) findViewById(R.id.cancel);// 点击删除表情和文字的Button  showExpression.setOnClickListener(this);  cancel.setOnClickListener(this); } @Override public void onClick(View v) {  switch (v.getId()) {  case R.id.button:   int randomID = 1 + new Random().nextInt(28);   try {    // 表情文件统一放在了res/drawable文件下    Field field = R.drawable.class.getDeclaredField("face"      + randomID);    int resouseId = Integer.parseInt(field.get(null).toString());    Bitmap bitmap = BitmapFactory.decodeResource(getResources(),      resouseId);    ImageSpan is = new ImageSpan(ActivityA.this, bitmap);//用ImageSpan指定图片替代文字    SpannableString ss = new SpannableString("[fac");// 其实写入EditView中的是这个字段“[fac”，表情图片会替代这个字段显示                                                      // 如果为了区分表情可以写一个集合每个表情对应一段文字    ss.setSpan(is, 0, 4, SpannableString.SPAN_EXCLUSIVE_EXCLUSIVE);    et.append(ss);// 追加到EditView中   } catch (Exception e) {    e.printStackTrace();   }   break;  case R.id.cancel:// 删除表情，当时表情时删除“[fac”的长度，是文字时删除一个长度   int selectionStart = et.getSelectionStart();// 获取光标的位置   if (selectionStart > 0) {    String body = et.getText().toString();    if (!TextUtils.isEmpty(body)) {     String tempStr = body.substring(0, selectionStart);     int i = tempStr.lastIndexOf("[");// 获取最后一个表情的位置     if (i != -1) {      CharSequence cs = tempStr        .subSequence(i, selectionStart);      if (cs.equals("[fac")) {// 判断是否是一个表情       et.getEditableText().delete(i, selectionStart);       return;      }     }     et.getEditableText().delete(tempStr.length() - 1,       selectionStart);    }   }   break;  default:   break;  } }}

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:id="@+id/ll"    android:gravity="center_vertical"    android:orientation="vertical" >   <EditText       android:id="@+id/et"       android:layout_width="fill_parent"       android:layout_height="wrap_content"       />   <Button android:id="@+id/button"       android:layout_width="fill_parent"       android:layout_height="wrap_content"       android:text="显示qq表情"       />    <Button android:id="@+id/cancel"       android:layout_width="fill_parent"       android:layout_height="wrap_content"       android:text="删除表情"       /></LinearLayout>