EditText输入表情图像. 看老罗android笔记

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<?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>

 

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<br><br><br>EditTextFaceActivity .java

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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