Created AsyncImageSwitcher

GreenDroid/src/greendroid/widget/AsyncImageSwitcher.java

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+package greendroid.widget;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.widget.ImageSwitcher;
+
+/**
+ * <p>
+ * Combines the animations of ImageSwitcher with the asynchronous loading of
+ * {@link AsyncImageView}.  Expects to have a  <code>ViewSwitcher.ViewFactory</code>
+ * which returns an {@link AsyncImageView} from it's {@code makeView} function:
+ * </p>
+ * <p>
+ * 	<code>
+ * 	public View makeView() {<br/>
+        &nbsp;&nbsp;&nbsp;&nbsp; AsyncImageView asyncImage = new AsyncImageView(mContext);<br/>
+        &nbsp;&nbsp;&nbsp;&nbsp; asyncImage.setBackgroundColor(0xFF000000);<br/>
+        &nbsp;&nbsp;&nbsp;&nbsp; asyncImage.setScaleType(ImageView.ScaleType.CENTER_CROP);<br/>
+        &nbsp;&nbsp;&nbsp;&nbsp; asyncImage.setLayoutParams(new ImageSwitcher.LayoutParams(300,250));<br/>
+        &nbsp;&nbsp;&nbsp;&nbsp; return asyncImage;<br/>
+	}<br/>
+ * 	</code>
+ * </p>
+ * 
+ * 
+ * <p>
+ * When registered as as an
+ * <code>AdapterView.OnItemSelectedListener, the client can conveniently
+ *  use {@link #setNextAsyncImageViewUrl(String)} to change the URL of the next {@link AsyncImageView} 
+ *  that will be displayed:
+ * </p>
+ * 
+ * <p>
+ * <code>
+ *		public void onItemSelected(AdapterView parent, View v, int position, long id) {<br/>
+ *			&nbsp;&nbsp;&nbsp;&nbsp; mAsyncImageSwitcher.setNextAsyncImageViewUrl(imageUrls[position]);<br/>
+ *			&nbsp;&nbsp;&nbsp;&nbsp; mAsyncImageSwitcher.showNext();<br/>
+ *		}<br/>
+ * </code>
+ * </p>
+ * 
+ * 
+ */
+public class AsyncImageSwitcher extends ImageSwitcher {
+
+	public AsyncImageSwitcher(Context context) {
+		super(context);
+
+	}
+
+	public AsyncImageSwitcher(Context context, AttributeSet attrs) {
+		super(context, attrs);
+	}
+
+	/**
+	 * Sets the URL of the next {@link AsyncImageView}
+	 * 
+	 * @param url
+	 *            The url of the image to set.
+	 */
+	public void setNextAsyncImageViewUrl(String url) {
+		AsyncImageView image = (AsyncImageView) this.getNextView();
+		image.setUrl(url);
+	}
+
+}