Android Open Source - StreamHub-Android-Reviews-App Download Image Task

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License

The source code is released under:

MIT License

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Java Source Code

package livefyre.ImagesCache;
/*from  w ww.  j ava  2 s  . c  o m*/
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Path;
import android.graphics.Rect;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.util.Log;
import android.widget.BaseAdapter;
import android.widget.ImageView;

public class DownloadImageTask extends AsyncTask<String, Void, Bitmap> {
  private int inSampleSize = 0;

  private String imageUrl;

  private BaseAdapter adapter;

  private ImagesCache cache;

  private Bitmap image = null;

  private ImageView ivImageView;

  public DownloadImageTask(BaseAdapter adapter) {
    this.adapter = adapter;

    this.cache = ImagesCache.getInstance();

  }

  public DownloadImageTask(ImagesCache cache, ImageView ivImageView) {
    this.cache = cache;

    this.ivImageView = ivImageView;

  }

  @Override
  protected Bitmap doInBackground(String... params) {
    imageUrl = params[0];

    return getImage(imageUrl);
  }

  @Override
  protected void onPostExecute(Bitmap result) {
    super.onPostExecute(result);

    if (result != null) {
      cache.addImageToWarehouse(imageUrl, result);

      if (ivImageView != null) {
        ivImageView.setImageBitmap(result);
      } else {

      }

      if (adapter != null) {
        adapter.notifyDataSetChanged();
      }
    }
  }

  private Bitmap getImage(String imageUrl) {
    if (cache.getImageFromWarehouse(imageUrl) == null) {
      BitmapFactory.Options options = new BitmapFactory.Options();

      options.inJustDecodeBounds = true;

      options.inSampleSize = inSampleSize;

      try {
        URL url = new URL(imageUrl);

        HttpURLConnection connection = (HttpURLConnection) url
            .openConnection();

        InputStream stream = connection.getInputStream();

        image = BitmapFactory.decodeStream(stream, null, options);

        int imageWidth = options.outWidth;

        int imageHeight = options.outHeight;

        options.inJustDecodeBounds = false;

        connection = (HttpURLConnection) url.openConnection();

        stream = connection.getInputStream();

        image = BitmapFactory.decodeStream(stream, null, options);
        Log.d("image", image.toString());
        return image;
      }

      catch (Exception e) {
        Log.e("getImage", e.toString());
      }
    }

    return image;
  }

  public static void getRoundedShape(ImageView scaleBitmapImageview) {
    Drawable scaleDrawable = scaleBitmapImageview.getDrawable();
    BitmapDrawable bitmapDrawable = ((BitmapDrawable) scaleDrawable);
    Bitmap bitmap = bitmapDrawable.getBitmap();
    Bitmap targetBitmap = null;
    try {
      int targetWidth = 100;
      int targetHeight = 100;
      targetBitmap = Bitmap.createBitmap(targetWidth, targetHeight,
          Bitmap.Config.ARGB_8888);

      Canvas canvas = new Canvas(targetBitmap);
      Path path = new Path();
      path.addCircle(
          ((float) targetWidth - 1) / 2,
          ((float) targetHeight - 1) / 2,
          (Math.min(((float) targetWidth), ((float) targetHeight)) / 2),
          Path.Direction.CCW);

      canvas.clipPath(path);
      Bitmap sourceBitmap = bitmap;
      canvas.drawBitmap(
          sourceBitmap,
          new Rect(0, 0, sourceBitmap.getWidth(), sourceBitmap
              .getHeight()), new Rect(0, 0, targetWidth,
              targetHeight), null);
    } catch (Exception e) {
      // e.printStackTrace();
    }
    scaleBitmapImageview.setImageBitmap(targetBitmap);
    // return targetBitmap;
  }

}

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