Android---15---EditText输入表情图像

activity_main.xml:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.edittextdemo1.MainActivity" >

    <EditText
        android:id="@+id/edittext"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp" />

    <Button
        android:id="@+id/button"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp"
        android:text="添加QQ表情" />

</LinearLayout>

MainActivity.java:

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.Spannable;
import android.text.SpannableString;
import android.text.style.ImageSpan;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;

public class MainActivity extends Activity implements OnClickListener {

	private EditText editText;
	private Button button;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		editText = (EditText) findViewById(R.id.edittext);
		button = (Button) findViewById(R.id.button);
		button.setOnClickListener(this);
	}

	@Override
	public void onClick(View v) {
		// TODO Auto-generated method stub
		int randomId = 1 + new Random().nextInt(9);
		try {
			Field field = R.drawable.class.getDeclaredField("qq" + randomId);

			int resourceId = Integer.parseInt(field.get(null).toString());
			// 在Android中要显示图片信息，必须使用Bitmap位图的对象来装载
			Bitmap bitmap = BitmapFactory.decodeResource(getResources(),
					resourceId);
			ImageSpan imageSpan = new ImageSpan(MainActivity.this, bitmap);
			SpannableString spannableString = new SpannableString("qq");
			spannableString.setSpan(imageSpan, 0, 2,
					Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
			editText.append(spannableString);
		} catch (Exception e) {
			// TODO: handle exception
		}
	}

}