(Android Studio) URL주소에서 이미지 가져와서 보여주기

출처 : http://blog.bykenny.com/entry/%EC%9B%B9%EC%9D%B4%EB%AF%B8%EC%A7%80-%EC%9D%B4%EB%AF%B8%EC%A7%80%EB%B7%B0%EC%97%90-%EB%84%A3%EA%B8%B0

출처 : http://blog.bykenny.com/webeuro-buteo-imiji-gajyeoogi/

import java.io.InputStream;
 
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import android.util.Log;
import android.widget.ImageView;
 
//웹에서 가져온 이미지 비트맵으로 리턴하는 클래스
public class ImageDownloader extends AsyncTask<String, Void, Bitmap> {
    ImageView bmImage;
 
    public ImageDownloader(ImageView bmImage) {
        this.bmImage = bmImage;
    }
 
    protected Bitmap doInBackground(String... urls) {
        String url = urls[0];
        Bitmap mIcon = null;
        try {
            InputStream in = new java.net.URL(url).openStream();
            mIcon = BitmapFactory.decodeStream(in);
        } catch (Exception e) {
            Log.e("Error", e.getMessage());
        }
        return mIcon;
    }
 
    protected void onPostExecute(Bitmap result) {
        bmImage.setImageBitmap(result);
    }
}

ImageDownloader.java

package ~~;
 
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import android.widget.ImageView;
 
import java.io.InputStream;
 
/**
 * Created by Administrator on 2016-11-10.
 */
//웹에서 가져온 이미지 비트맵으로 리턴하는 클래스
public class ImageDownloader extends AsyncTask<String, Void, Bitmap> {
    ImageView bmImage;
 
    public ImageDownloader(ImageView bmImage) {
        this.bmImage = bmImage;
    }
 
    protected Bitmap doInBackground(String... urls) {
        String url = urls[0];
        Bitmap mIcon = null;
        try {
            InputStream in = new java.net.URL(url).openStream();
 
            mIcon = BitmapFactory.decodeStream(in);
 
            int imageWidth = mIcon.getWidth();
            int imageHeight = mIcon.getHeight();
            System.out.println("가로길이 : " + imageWidth);
            System.out.println("세로길이 : " + imageHeight);
 
        } catch (Exception e) {
            // Log.e("Error", e.getMessage());
        }
        return mIcon;
    }
 
    protected void onPostExecute(Bitmap result) {
        bmImage.setImageBitmap(result);
    }
}