Android：通用图像加载器 - 将新图像添加到缓存

Question

我已成功将 Universal Imageloader 集成到我的图库应用程序中以显示来自 phone 存储的图像

但是存储在应用程序指定文件夹中的新图像（从相机捕获/处理过的图像）不会出现在图库中。甚至应用程序重新启动。

May be due to this error

W/ImageLoader: Try to initialize ImageLoader which had already been initialized before. To re-init ImageLoader with new configuration call ImageLoader.destroy() at first.

我认为将新图片的详细信息添加到缓存中可以解决问题。但不知道如何。请帮忙

code : Activity Extends Application

DisplayImageOptions defaultDisplayImageOptions = new DisplayImageOptions.Builder() //
        .considerExifParams(true)
        .resetViewBeforeLoading(true)
        .showImageOnLoading(R.drawable.nophotos)
        .showImageOnFail(R.drawable.nophotos)
        .delayBeforeLoading(0)
        .build(); //

ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(
        getApplicationContext())
        .defaultDisplayImageOptions(defaultDisplayImageOptions)
        .memoryCacheExtraOptions(480, 800).threadPoolSize(5)
        .build();


ImageLoader.getInstance().init(config);

load all album

   PhoneMediaControl mediaControl = new PhoneMediaControl();
    mediaControl.setLoadalbumphoto(new loadAlbumPhoto() {

        @Override
        public void loadPhoto(ArrayList<AlbumEntry> albumsSorted_) {
            albumsSorted = new ArrayList<PhoneMediaControl.AlbumEntry>(albumsSorted_);
            if (mView != null && mView.getEmptyView() == null) {
                mView.setEmptyView(null);
            }
            if (listAdapter != null) {
                listAdapter.notifyDataSetChanged();
            }
        }
    });
    mediaControl.loadGalleryPhotosAlbums(mContext, 0);

is there any way to add new processed image to the cache or already initiated imageloader

Answer 1

仅在 Application class 的 onCreate() 内初始化您的 UniversalImageLoader 实例一次，而不是在每个 Activity 或其他地方。

Answer 2

您只需使用通用图片加载器加载您的图片，它会自动缓存它。

加载中

                ImageLoader imageLoader = ImageLoader.getInstance();
                Uri uri = Uri.fromFile(new File("/DCIM/Camera/1470634175974.jpg"));
                imageLoader.loadImage(uri.toString(), new SimpleImageLoadingListener() {

                    @Override
                    public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage) {
                        // Do whatever you want with Bitmap
                    }
                });

通用图像加载器接受的 URI 方案

"file:///mnt/sdcard/image.png" // from SD card
"file:///mnt/sdcard/video.mp4" // from SD card (video thumbnail)
"content://media/external/images/media/13" // from content provider
"content://media/external/video/media/13" // from content provider (video thumbnail)
"assets://image.png" // from assets
"drawable://" + R.drawable.img // from drawables (non-9patch images)

Answer 3

我发现这将使用函数 load Image aSync();

解决问题

ImageLoader.getInstance().loadImageSync(filepath);

Android：通用图像加载器 - 将新图像添加到缓存

Android: Universal Image Loader - Add new image to cache

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