fetch Image from URL - Android Graphics

Android examples for Graphics:Image Download

  1. HOME
  2. Android
  3. Graphics
  4. Image Download

Description

fetch Image from URL

Demo Code


//package com.java2s;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;

public class Main {
    private static final int RETRIES = 50;

    public static Bitmap fetchImage(String fileUrl) {
        Bitmap img = null;//from  ww w.j  a  va 2  s.  c o m
        boolean downSampleFlag = false;
        for (int i = 0; i < RETRIES; i++) {
            try {
                if (downSampleFlag) {
                    img = getImageDownSample(fileUrl);
                } else {
                    img = getImage(fileUrl);
                }
            } catch (IOException e) {
                e.printStackTrace();
                long delay = (long) (Math.random() * (Math.pow(4, i) * 100L));
                try {
                    Thread.sleep(delay);
                } catch (InterruptedException iex) {
                    //                e.printStackTrace();
                }
                continue;
            } catch (OutOfMemoryError e) {
                downSampleFlag = true;
                continue;
            }
            return img;
        }

        return null;
    }

    private static Bitmap getImageDownSample(String url) throws IOException {
        URL myFileUrl = new URL(url);
        HttpURLConnection conn = (HttpURLConnection) myFileUrl
                .openConnection();
        conn.setDoInput(true);
        conn.connect();
        InputStream is = conn.getInputStream();
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inSampleSize = 8;
        Bitmap image = BitmapFactory.decodeStream(is, null, options);
        is.close();
        return image;
    }

    private static Bitmap getImage(String url) throws IOException {
        URL myFileUrl = new URL(url);
        HttpURLConnection conn = (HttpURLConnection) myFileUrl
                .openConnection();
        conn.setDoInput(true);
        conn.connect();
        InputStream is = conn.getInputStream();
        Bitmap image = BitmapFactory.decodeStream(is);
        is.close();
        return image;
    }
}

Related Tutorials