Android Open Source - Android-Lib-AsyncImageLoader Gallery Adapter

• Back to UI ListView/library  ↑

From Project

Back to project page Android-Lib-AsyncImageLoader.

License

The source code is released under:

Apache License

Java Source Code

package android.lib.asyncimageloader;
/*from   w w  w.jav a 2 s . co m*/
import java.net.URL;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.widget.AbsListView;
import android.widget.BaseAdapter;
import android.widget.ImageView;

public abstract class GalleryAdapter extends BaseAdapter {
    /**
     * A base class for holding the {@link ImageView} of the view used by the items in a {@link AbsListView}.
     */
    public class GalleryViewHolder {
        /**
         * The {@link ImageView} of the view used by the items in a {@link AbsListView}.
         */
        public final ImageView imageView;

        /**
         * Creates a new instance of {@link GalleryViewHolder}.
         * @param imageView the {@link ImageView} of the view used by the items in a {@link AbsListView}.
         */
        public GalleryViewHolder(final ImageView imageView) {
            this.imageView = imageView;
        }
    }

    protected final AsyncImageLoader imageLoader;

    /**
     * Creates a new instance of {@link GalleryAdapter}.
     * @param activity the activity that hosts the {@link ImageView}s used by the items in a {@link AbsListView}.
     * @param numberOfCachedBitmaps the maximum number of {@link Bitmap} objects cached in memory.
     * @param thumbnailPath the path to store any generated thumbnails.
     */
    public GalleryAdapter(final Activity activity, final int numberOfCachedBitmaps, final String thumbnailPath) {
        this.imageLoader = new AsyncImageLoader(activity, numberOfCachedBitmaps, thumbnailPath);
    }

    /**
     * Cleans up any resources used by the adapter.
     * <p>Note: This method must be called in {@link Activity#onDestroy()}.</p>
     */
    public final void onDestroy() {
        this.imageLoader.close();
    }

    /**
     * Loads and displays a {@link Bitmap} at the given <code>path</code> for the {@link ImageView}.
     * @param path the path to load a {@link Bitmap}.
     * @param imageView the {@link ImageView} to display the loaded {@link Bitmap}.
     */
    protected void loadImage(final String path, final ImageView imageView) {
        this.imageLoader.loadImage(path, imageView);
    }

    /**
     * Loads and displays a {@link Bitmap} from the given <coed>url</code> for the {@link ImageView}.
     * @param url the URL to get the bitmap data from.
     * @param imageView the {@link ImageView} to display the loaded {@link Bitmap}.
     */
    protected void loadImage(final URL url, final ImageView imageView) {
        this.imageLoader.loadImage(url, imageView);
    }

    /**
     * Loads and displays a {@link Bitmap} at the given <code>path</code> for the {@link ImageView}.
     * @param path the path to load a {@link Bitmap}.
     * @param imageView the {@link ImageView} to display the loaded {@link Bitmap}.
     * @param options the bitmap options, if any, used for loading the {@link Bitmap}.
     */
    protected void loadImage(final String path, final ImageView imageView, final BitmapFactory.Options options) {
        this.imageLoader.loadImage(path, imageView, options);
    }

    /**
     * Loads and displays a {@link Bitmap} at the given <code>path</code> for the {@link ImageView}.
     * @param path the path to load a {@link Bitmap}.
     * @param imageView the {@link ImageView} to display the loaded {@link Bitmap}.
     * @param listener a callback when the loading process completes.
     */
    protected void loadImage(final String path, final ImageView imageView, final OnImageLoadedListener listener) {
        this.imageLoader.loadImage(path, imageView, listener);
    }

    /**
     * Loads and displays a {@link Bitmap} from the given <coed>url</code> for the {@link ImageView}.
     * @param url the URL to get the bitmap data from.
     * @param imageView the {@link ImageView} to display the loaded {@link Bitmap}.
     * @param listener a callback when the loading process completes.
     */
    protected void loadImage(final URL url, final ImageView imageView, final OnImageLoadedListener listener) {
        this.imageLoader.loadImage(url, imageView, listener);
    }

    /**
     * Loads and displays a {@link Bitmap} at the given <code>path</code> for the {@link ImageView}.
     * @param path the path to load a {@link Bitmap}.
     * @param imageView the {@link ImageView} to display the loaded {@link Bitmap}.
     * @param options the bitmap options, if any, used for loading the {@link Bitmap}.
     * @param listener a callback when the loading process completes.
     */
    protected void loadImage(final String path, final ImageView imageView, final BitmapFactory.Options options, final OnImageLoadedListener listener) {
        this.imageLoader.loadImage(path, imageView, options, listener);
    }

    /**
     * Loads and displays a {@link Bitmap} thumbnail of the image at the given <code>path</code> for the {@link ImageView}.
     * @param path the path to load a {@link Bitmap}.
     * @param imageView the {@link ImageView} to display the loaded {@link Bitmap}.
     * @param kind either {@link android.provider.MediaStore.Images.Thumbnails#MINI_KIND} or
     * {@link android.provider.MediaStore.Images.Thumbnails#MICRO_KIND}, or -1 if this parameter is irrelevant.
     */
    protected void loadImageThumbnail(final String path, final ImageView imageView, final int kind) {
        this.imageLoader.loadImageThumbnail(path, imageView, kind);
    }

    /**
     * Loads and displays a {@link Bitmap} thumbnail of the image at the given <code>path</code> for the {@link ImageView}.
     * @param path the path to load a {@link Bitmap}.
     * @param imageView the {@link ImageView} to display the loaded {@link Bitmap}.
     * @param kind either {@link android.provider.MediaStore.Images.Thumbnails#MINI_KIND} or
     * {@link android.provider.MediaStore.Images.Thumbnails#MICRO_KIND}, or -1 if this parameter is irrelevant.
     * @param listener a callback when the loading process completes.
     */
    protected void loadImageThumbnail(final String path, final ImageView imageView, final int kind, final OnImageLoadedListener listener) {
        this.imageLoader.loadImageThumbnail(path, imageView, kind, listener);
    }

    /**
     * Loads and displays a {@link Bitmap} thumbnail of the video at the given <code>path</code> for the {@link ImageView}.
     * @param path the path to load a {@link Bitmap}.
     * @param imageView the {@link ImageView} to display the loaded {@link Bitmap}.
     * @param kind either {@link android.provider.MediaStore.Video.Thumbnails#MINI_KIND} or
     * {@link android.provider.MediaStore.Video.Thumbnails#MICRO_KIND}, or -1 if this parameter is irrelevant.
     */
    protected void loadVideoThumbnail(final String path, final ImageView imageView, final int kind) {
        this.imageLoader.loadVideoThumbnail(path, imageView, kind);
    }

    /**
     * Loads and displays a {@link Bitmap} thumbnail of the video at the given <code>path</code> for the {@link ImageView}.
     * @param path the path to load a {@link Bitmap}.
     * @param imageView the {@link ImageView} to display the loaded {@link Bitmap}.
     * @param kind either {@link android.provider.MediaStore.Video.Thumbnails#MINI_KIND} or
     * {@link android.provider.MediaStore.Video.Thumbnails#MICRO_KIND}, or -1 if this parameter is irrelevant.
     * @param listener a callback when the loading process completes.
     */
    protected void loadVideoThumbnail(final String path, final ImageView imageView, final int kind, final OnImageLoadedListener listener) {
        this.imageLoader.loadVideoThumbnail(path, imageView, kind, listener);
    }
}

Java Source Code List

• Back to UI ListView/library  ↑