Clash Legends v0.0.1 - URLImageParser.java 源代码

package com.clash.legends.utils;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.text.Html;
import android.util.Base64;
import android.view.View;
import java.io.InputStream;
import java.net.URL;

public class URLImageParser implements Html.ImageGetter {
    View container;
    Context context;

    public URLImageParser(View container, Context context) {
        this.context = context;
        this.container = container;
    }

    @Override
    public Drawable getDrawable(String source) {
        if (source.matches("data:image.*base64.*")) {
            String base_64_source = source.replaceAll("data:image.*base64", "");
            byte[] data = Base64.decode(base_64_source, 0);
            Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0, data.length);
            Drawable image = new BitmapDrawable(this.context.getResources(), bitmap);
            image.setBounds(0, 0, image.getIntrinsicWidth() + 0, image.getIntrinsicHeight() + 0);
            return image;
        }
        URLDrawable urlDrawable = new URLDrawable();
        ImageGetterAsyncTask asyncTask = new ImageGetterAsyncTask(urlDrawable);
        asyncTask.execute(source);
        return urlDrawable;
    }

    public class ImageGetterAsyncTask extends AsyncTask<String, Void, Drawable> {
        URLDrawable urlDrawable;

        public ImageGetterAsyncTask(URLDrawable d) {
            this.urlDrawable = d;
        }

        @Override
        public Drawable doInBackground(String... params) {
            String source = params[0];
            return fetchDrawable(source);
        }

        @Override
        public void onPostExecute(Drawable result) {
            this.urlDrawable.setBounds(0, 0, result.getIntrinsicWidth() + 0, result.getIntrinsicHeight() + 0);
            this.urlDrawable.drawable = result;
            URLImageParser.this.container.invalidate();
        }

        public Drawable fetchDrawable(String urlString) {
            try {
                InputStream is = (InputStream) new URL(urlString).getContent();
                Drawable drawable = Drawable.createFromStream(is, "src");
                drawable.setBounds(0, 0, drawable.getIntrinsicWidth() + 0, drawable.getIntrinsicHeight() + 0);
                return drawable;
            } catch (Exception e) {
                return null;
            }
        }
    }
}