download Image By Url - Android Network

Android examples for Network:HTTP

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Description

download Image By Url

Demo Code


import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.widget.ImageView;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;

public class Main{
    /*from w  ww .  java2s  .c  om*/
    public static boolean downloadImgByUrl(String urlStr, File file) {
        FileOutputStream fos = null;
        InputStream is = null;
        try {
            URL url = new URL(urlStr);
            HttpURLConnection conn = (HttpURLConnection) url
                    .openConnection();
            is = conn.getInputStream();
            fos = new FileOutputStream(file);
            byte[] buff = new byte[512];
            int len = 0;
            while ((len = is.read(buff)) != -1) {
                fos.write(buff, 0, len);
            }
            fos.flush();
            return true;
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (is != null) {
                try {
                    is.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (fos != null) {
                try {
                    fos.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return false;
    }
    
    public static Bitmap downloadImgByUrl(String urlStr, ImageView imageView) {
        InputStream is = null;
        try {
            URL url = new URL(urlStr);
            HttpURLConnection conn = (HttpURLConnection) url
                    .openConnection();
            is = new BufferedInputStream(conn.getInputStream());
            is.mark(is.available());

            BitmapFactory.Options options = new BitmapFactory.Options();
            options.inJustDecodeBounds = true;
            Bitmap bitmap = BitmapFactory.decodeStream(is, null, options);

            ImageSizeUtil.ImageSize imageSize = ImageSizeUtil
                    .getImageViewSize(imageView);
            options.inSampleSize = ImageSizeUtil.caculateInSampleSize(
                    options, imageSize.width, imageSize.height);
            options.inJustDecodeBounds = false;
            is.reset();
            bitmap = BitmapFactory.decodeStream(is, null, options);
            conn.disconnect();
            return bitmap;

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (is != null) {
                try {
                    is.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return null;
    }
}

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