Android开发（16）-TextView显示表情图像和文字

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    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=".MainActivity" >

    <TextView
        android:id="@+id/textview"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        android:background="#FFF" />

</RelativeLayout>

package com.example.textview3;
import java.lang.reflect.Field;

import android.os.Bundle;
import android.app.Activity;
import android.graphics.Color;
import android.graphics.drawable.Drawable;
import android.text.Html;
import android.text.Html.ImageGetter;
import android.text.method.LinkMovementMethod;
import android.view.Menu;
import android.widget.TextView;

public class MainActivity extends Activity {
	public int getResourceId(String name) {
		try {
			// 根据资源的ID的变量名获得Field的对象,使用反射机制来实现的
			Field field = R.drawable.class.getField(name);
			// 取得并返回资源的id的字段(静态变量)的值，使用反射机制
			return Integer.parseInt(field.get(null).toString());
		} catch (Exception e) {
			// TODO: handle exception
		}
		return 0;
	}
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		TextView textView = (TextView) this.findViewById(R.id.textview);
		textView.setTextColor(Color.BLACK);
		textView.setBackgroundColor(Color.WHITE);
		textView.setTextSize(20);// 设置字体的大小
		String html = "图像1<img src='image1'/>图像2<img src='image2'/>图像3<img src='image3'/><p>";
		html += "图像4<a href='http://www.baidu.com'><img src='image4'></a>图像5<img src='image5'/>";

		CharSequence charSequence = Html.fromHtml(html, new ImageGetter() {

			@Override
			public Drawable getDrawable(String source) {
				// TODO Auto-generated method stub
				// 获得系统资源的信息，比如图片信息
				Drawable drawable = getResources().getDrawable(
						getResourceId(source));
				// 第三个图片文件按照50%的比例进行压缩
				if (source.equals("image3")) {
					drawable.setBounds(0, 0, drawable.getIntrinsicWidth() / 2,
							drawable.getIntrinsicHeight() / 2);
				} else {
					drawable.setBounds(0, 0, drawable.getIntrinsicWidth(),
							drawable.getIntrinsicHeight());
				}
				return drawable;
			}
		}, null);
		textView.setText(charSequence);
		textView.setMovementMethod(LinkMovementMethod.getInstance());
	}
	

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

}