Manual DI

WidgetImageLoader.java

    public static WidgetImageLoader newInstance(Resources resources) {
        BitmapAdjuster adjuster = BitmapAdjuster.newInstance(resources);
        Retriever defaultRetriever = new MemoryRetriever();
        Retriever fileRetriever = FileRetriever.newInstance(resources);
        return new WidgetImageLoader(defaultRetriever, fileRetriever, adjuster);
    }

    WidgetImageLoader(Retriever memoryRetriever, Retriever fileRetriever, BitmapAdjuster adjuster) {
        this.memoryRetriever = memoryRetriever;
        this.fileRetriever = fileRetriever;
        this.adjuster = adjuster;
    }