Android ขอวิธีเรียกรูปภาพจาก sd card หรือ URL Web มาแสดงบน ImageView หน่อยครับ

ImageView imageView = (ImageView) gridView.findViewById(R.id.imageView1);
Bitmap bm = BitmapFactory.decodeFile("/sdcard/img.png");
imageView.setImageBitmap(bm);

String filename = "pic_a" // ไม่ต้องใส่นามสกุล
int ResID = getResources().getIdentifier(filename, "drawable", MainActivity.this.getPackageName());
imageView.setImageResource(ResID);

import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;

import android.app.Activity;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.text.Editable;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;

public class Example1 extends Activity{
	EditText inputUrl;
	OnClickListener getImageBtnOnClick = new OnClickListener() {
		public void onClick(View view) {
			Context context = view.getContext();
			Editable ed = inputUrl.getText();
			Drawable image = ImageOperations(context,ed.toString(),"image.jpg");
			ImageView imgView = new ImageView(context);
			imgView = (ImageView)findViewById(R.id.image1);
			imgView.setImageDrawable(image);
		}
	};

	public void onCreate(Bundle icicle) {
		super.onCreate(icicle);
		setContentView(R.layout.main);
		inputUrl = ((EditText)findViewById(R.id.imageUrl));
		inputUrl.setSingleLine();
		inputUrl.setTextSize(11);
		Button getImageButton = (Button)findViewById(R.id.getImageButton);
		getImageButton.setOnClickListener(getImageBtnOnClick);

	}	

	private Drawable ImageOperations(Context ctx, String url, String saveFilename) {
		try {
			InputStream is = (InputStream) this.fetch(url);
			Drawable d = Drawable.createFromStream(is, "src");
			return d;
		} catch (MalformedURLException e) {
			e.printStackTrace();
			return null;
		} catch (IOException e) {
			e.printStackTrace();
			return null;
		}
	}

	public Object fetch(String address) throws MalformedURLException,IOException {
		URL url = new URL(address);
		Object content = url.getContent();
		return content;
	}
}

public static Bitmap loadBitmap(String url) {
    Bitmap bitmap = null;
    InputStream in = null;
    BufferedOutputStream out = null;

    try {
        in = new BufferedInputStream(new URL(url).openStream(), IO_BUFFER_SIZE);

        final ByteArrayOutputStream dataStream = new ByteArrayOutputStream();
        out = new BufferedOutputStream(dataStream, IO_BUFFER_SIZE);
        copy(in, out);
        out.flush();

        final byte[] data = dataStream.toByteArray();
        BitmapFactory.Options options = new BitmapFactory.Options();
        //options.inSampleSize = 1;

        bitmap = BitmapFactory.decodeByteArray(data, 0, data.length,options);
    } catch (IOException e) {
        Log.e(TAG, "Could not load Bitmap from: " + url);
    } finally {
        closeStream(in);
        closeStream(out);
    }

    return bitmap;
}

imgView.setImageBitmap(loadBitmap("https://www.thaicreate.com/logo.jpg"));