Android Open Source - campus Gallery Page Fragment

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License

The source code is released under:

GNU General Public License

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Java Source Code

package lecho.app.campus.fragment;
//from   w w  w . j  ava 2s  .c om
import lecho.app.campus.R;
import lecho.app.campus.utils.BitmapAsyncTask;
import lecho.app.campus.utils.BitmapAsyncTask.OnBitmapLoadedListener;
import lecho.app.campus.utils.Config;
import lecho.app.campus.view.ZoomImageView;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ProgressBar;
import android.widget.RelativeLayout;
import android.widget.RelativeLayout.LayoutParams;

import com.actionbarsherlock.app.SherlockFragment;

/**
 * 
 * @author Lecho
 * 
 */
public class GalleryPageFragment extends SherlockFragment implements OnBitmapLoadedListener {
  private static final String TAG = "GalleryPageFragment";
  public static final String EXTRA_PATH = "lecho.app.campus:EXTRA_PATH";
  private RelativeLayout mLayout;
  private ZoomImageView mImageView;
  private ProgressBar mProgressBar;

  public static GalleryPageFragment newInstance(String path) {
    GalleryPageFragment fragment = new GalleryPageFragment();
    Bundle args = new Bundle();
    args.putString(EXTRA_PATH, path);
    fragment.setArguments(args);
    return fragment;
  }

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_gallery_page, container, false);
    mLayout = (RelativeLayout) view.findViewById(R.id.relative_layout);
    mImageView = new ZoomImageView(getActivity());
    mProgressBar = (ProgressBar) view.findViewById(R.id.progress_bar);
    loadPlaceImage(getArguments().getString(EXTRA_PATH), mImageView);
    return view;
  }

  private void loadPlaceImage(String path, final ZoomImageView imageView) {
    BitmapAsyncTask bitmapAsyncTask = new BitmapAsyncTask(getActivity(), path, imageView,
        R.dimen.gallery_place_image_request_width, R.dimen.gallery_place_image_request_height, this);
    bitmapAsyncTask.execute();
  }

  @Override
  public void onDestroy() {
    recycleImage();
    super.onDestroy();
  }

  private void recycleImage() {
    // TODO Implement reference counting. Recycle for pre-honeycomb.
    if (null != mImageView) {
      final Drawable drawable = mImageView.getDrawable();
      if (null != drawable) {
        Bitmap bitmap = ((BitmapDrawable) drawable).getBitmap();
        bitmap.recycle();
        mImageView = null;
        if (Config.DEBUG) {
          Log.d(TAG, "Recycled bitmap");
        }
      }
    }
  }

  @Override
  public void onBitmapLoaded(boolean success) {
    if (success) {
      mProgressBar.setVisibility(View.GONE);
      if (null == mImageView.getParent()) {
        LayoutParams lp = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
        mImageView.setLayoutParams(lp);
        mLayout.addView(mImageView);
      }
    }

  }
}

Java Source Code List