EditText输入表情图像. 看老罗android笔记

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
    
    <!-- 聊天输入 -->
    <EditText
        android:id="@+id/et_chat"
        android:layout_width="300dip"
        android:layout_height="wrap_content"
          />
    
    <Button
        android:id="@+id/bt_insetFace"
        android:layout_width="50dip"
        android:layout_height="wrap_content"
        android:text="插入标签" />

</LinearLayout>

EditTextFaceActivity .java

package cn.face;

import java.lang.reflect.Field;  //reflect 反射
import java.util.Random;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.style.ImageSpan;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;

public class EditTextFaceActivity extends Activity {
	private EditText et_chat;
	private  Button bt_insetFace;
	
	public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        et_chat = (EditText)findViewById(R.id.et_chat);
        bt_insetFace = (Button)findViewById(R.id.bt_insetFace);
        bt_insetFace.setOnClickListener(new OnClickListener() {
			
			public void onClick(View v) {
				int randomId = 1+ new Random().nextInt(20);
				try{
					Field field = R.drawable.class.getDeclaredField("face" + randomId);
					int resourceId = Integer.parseInt(field.get(null).toString());
					//在android中显示图片信息，必须使用Bitmap位图对象来装载
					Bitmap bitmap = BitmapFactory.decodeResource(
							getResources(), resourceId);
					ImageSpan imageSpan = new ImageSpan(EditTextFaceActivity.this,bitmap);
					SpannableString spannableString = new SpannableString("face"); //表情图片前缀为"face"
					spannableString.setSpan(imageSpan, 0, 4,
							Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
					et_chat.append(spannableString);
				}catch(Exception e){
					
				}
			}
		});
        
	}
	
	
	
	
}

　　

看实现图片