Android TextView 富文本加载实现

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package com.changhong.hhys.utils.commom;

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.text.Html;
import android.view.View;
import android.widget.TextView;

import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.listener.SimpleImageLoadingListener;

/**
 * Created by g on 2016/10/5.
 */

public class URLImageParser implements Html.ImageGetter {
    TextView mTextView;

    public URLImageParser(TextView textView) {
        this.mTextView = textView;
    }

    @Override
    public Drawable getDrawable(String source) {
        final URLDrawable urlDrawable = new URLDrawable();
        ImageLoader.getInstance().loadImage( source, new SimpleImageLoadingListener() {
            @Override
            public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage) {
                urlDrawable.bitmap = loadedImage;
                urlDrawable.setBounds(0, 0, loadedImage.getWidth(), loadedImage.getHeight());
                mTextView.invalidate();
                mTextView.setText(mTextView.getText()); // 解决图文重叠
            }
        });


        return urlDrawable;
    }
    public class URLDrawable extends BitmapDrawable {
        protected Bitmap bitmap;

        @Override
        public void draw(Canvas canvas) {
            if (bitmap != null) {
                canvas.drawBitmap(bitmap, 0, 0, getPaint());
            }
        }
    }

}