android 使用html标签

Android中使用html标签很大程度上提高了开发的灵活性。下面是一个简单的使用示例，设置了字体颜色并在中间嵌入了一张图片。

import android.app.Activity;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.text.Html;
import android.text.Spanned;
import android.widget.TextView;

/**
 * Created by hsji on 2015/8/5.
 */
public class HtmlStringActivity extends Activity{
    TextView content;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_html_string);
        content = (TextView) findViewById(R.id.content);

        /**
         * This methos is called when the HTML parser encounters an <img> tag.
         * The source argument is the string from the "src" attribute;
         * the return value should be a Drawable representation of the image or null for a generic replacement image.
         * Make sure you call setBounds() on your Drawable if it doesn't already have its bounds set.
         */
        Html.ImageGetter imageGetter = new Html.ImageGetter(){

            @Override
            public Drawable getDrawable(String source) {
                Drawable drawable = null;
                try {
                     drawable = getResources().getDrawable(Integer.parseInt(source));
                     drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());
                }catch (NumberFormatException e){
                    e.printStackTrace();
                }
                return drawable;
            }
        };

        StringBuffer sb = new StringBuffer();
        sb.append("<font color="#ff0000">我</font>")
                .append("<img src=""+R.drawable.heart+""/>")
                .append("<font color="#ff0000">董英</font>");
        Spanned spanned = Html.fromHtml(sb.toString(),imageGetter,null);
        content.setText(spanned);
    }
}

效果如下：