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There are many ways through which you can instantiate bitmap. The effects could be brightness,darkness, grayscale conversion e.t.c.Īndroid provides Bitmap class to handle images.

You can easily apply image processing techniques to add certain kinds of effects on images. It would likely be possible to produce the same results I am getting with an AsyncTask using CursorLoader … but I wanted to render the resulting photos into list items that include both the thumbnails and full sized images so I instead wrote my own custom task loader.Android allows you to manipulate images by adding different kinds of effects on the images. CursorLoaders come with their own built-in AsyncTaskLoader which automatically handles the process of moving the load into the background. A more advanced form of cursor is a CursorLoader. In our gallery list fragment: void onCreate(Bundle savedInstanceState) Ĭursor thumbnailsCursor = context.getContentResolver().query( _CONTENT_URI,Īndroid Cursors are the general method used to fetch photo items in the background. For this guide I have written a custom AsyncTaskLoader specifically for loading gallery images via a utility class called PhotoGalleryImageProvider I have also provided.įragments provide a special interface for automatically kick starting and interacting with async task loaders. As a result, we want to make use of an Android construct called an AsyncTaskLoader. Loading our entire image gallery into a list in Android Studio is an intensive task. Note: This example makes use of List Fragments, a topic I cover extensively in my article on list fragments. This guide will specifically be covering " SimplePhotoGalleryListFragment. If you haven't already, clone my example project from GitHub. This is part 2 of my 5 part series on Android Studio camera development using fragments. TL DR - This guide demonstrates how to fetch images from your Android device's photo gallery using Android Studio List Fragments and display their thumbnails in a grid. Rex is an internet of things developer evangelist at Intel’s Mashery.