Android Open Source - mtgtools Download Image Task

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License

The source code is released under:

GNU General Public License

Java Source Code

package pe.apiconz.apps.mtgtools;
// ww  w.  j a v a2 s.  co m
import java.io.InputStream;
import java.lang.ref.WeakReference;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.methods.HttpGet;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.http.AndroidHttpClient;
import android.os.AsyncTask;
import android.util.Log;
import android.widget.ImageView;

public class DownloadImageTask extends AsyncTask<String, Void, Bitmap> {

  public static final String TAG = DownloadImageTask.class.getCanonicalName();

  private final WeakReference<ImageView> imageViewReference;

  public DownloadImageTask(ImageView imageView) {
    imageViewReference = new WeakReference<ImageView>(imageView);
  }

  @Override
  protected Bitmap doInBackground(String... params) {

    String url = params[0];
    final AndroidHttpClient client = AndroidHttpClient
        .newInstance("Android");
    final HttpGet getRequest = new HttpGet(url);

    try {
      HttpResponse response = client.execute(getRequest);
      final int statusCode = response.getStatusLine().getStatusCode();

      if (statusCode != HttpStatus.SC_OK) {
        Log.w(TAG, "Hubo un error durante la descarga de la imagen");
        return null;
      }

      final HttpEntity httpEntity = response.getEntity();

      if (httpEntity != null) {
        InputStream inputStream = null;
        try {
          inputStream = httpEntity.getContent();
          final Bitmap bitmap = BitmapFactory
              .decodeStream(inputStream);
          return bitmap;

        } finally {
          if (inputStream != null) {
            inputStream.close();
          }
          httpEntity.consumeContent();
        }
      }
    } catch (Exception e) {
      getRequest.abort();
      Log.w(TAG,
          "Se produjo una excepcin durante la descarga de la imagen");
    } finally {
      if (client != null) {
        client.close();
      }
    }

    return null;
  }

  @Override
  protected void onPostExecute(Bitmap bitmap) {
    if (isCancelled()) {
      bitmap = null;
    }

    if (imageViewReference != null) {
      ImageView imageView = imageViewReference.get();

      if (imageView != null) {
        if (bitmap != null) {
          imageView.setImageBitmap(bitmap);
        } else {
          imageView.setImageDrawable(imageView.getContext()
              .getResources().getDrawable(R.drawable.card_back));
        }
      }
    }

  }

}

Java Source Code List

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