android ImageLoader加载本地图片的工具类

import android.widget.ImageView;



import com.nostra13.universalimageloader.core.ImageLoader;



/**

 * 异步加载本地图片工具类

 * 

 * @author tony

 * 

 */

public class LoadLocalImageUtil {

    private LoadLocalImageUtil() {

    }



    private static LoadLocalImageUtil instance = null;



    public static synchronized LoadLocalImageUtil getInstance() {

        if (instance == null) {

            instance = new LoadLocalImageUtil();

        }

        return instance;

    }



    /**

     * 从内存卡中异步加载本地图片

     * 

     * @param uri

     * @param imageView

     */

    public void displayFromSDCard(String uri, ImageView imageView) {

        // String imageUri = "file:///mnt/sdcard/image.png"; // from SD card

        ImageLoader.getInstance().displayImage("file://" + uri, imageView);

    }



    /**

     * 从assets文件夹中异步加载图片

     * 

     * @param imageName

     *            图片名称，带后缀的，例如：1.png

     * @param imageView

     */

    public void dispalyFromAssets(String imageName, ImageView imageView) {

        // String imageUri = "assets://image.png"; // from assets

        ImageLoader.getInstance().displayImage("assets://" + imageName,

                imageView);

    }



    /**

     * 从drawable中异步加载本地图片

     * 

     * @param imageId

     * @param imageView

     */

    public void displayFromDrawable(int imageId, ImageView imageView) {

        // String imageUri = "drawable://" + R.drawable.image; // from drawables

        // (only images, non-9patch)

        ImageLoader.getInstance().displayImage("drawable://" + imageId,

                imageView);

    }



    /**

     * 从内容提提供者中抓取图片

     */

    public void displayFromContent(String uri, ImageView imageView) {

        // String imageUri = "content://media/external/audio/albumart/13"; //

        // from content provider

        ImageLoader.getInstance().displayImage("content://" + uri, imageView);

    }



}