Android Camera2 API LooknFeel – Part 1 of a new tutorial series on how to use the android camera 2 api’s. Part 1 focuses on the look & feel of the application, which is based on the recyclerview image gallery Code available on github You can clone the code from https://github.com/mobapptuts/recyclerview_image_gallery.git Tag looknfeel or else you […]
Read moreThis android video tutorial explains how to create memory cache for android. Using this method will have a dramatic effect on performance for android applications. Implementation Create LruCache final int maxMemorySize = (int) Runtime.getRuntime().maxMemory() / 1024; final int cacheSize = maxMemorySize / 10; mMemoryCache = new LruCache<String, Bitmap>(cacheSize) { @Override protected int sizeOf(String key, Bitmap […]
Read moreThis tutorial is about resolving concurrency issues that happen when issuing AsyncTasks when using RecyclerViews in android applications. Get Code You can download the code from github here https://github.com/mobapptuts/recyclerview_image_gallery.git Tag concurrency Or else run this command git clone –branch concurrency https://github.com/mobapptuts/recyclerview_image_gallery.git Create a class derived from BitmapDrawable public static class AsyncDrawable extends BitmapDrawable { final WeakReference<BitmapWorkerTask> taskReference; […]
Read morePart 2 – Addresses the issue with the bitmaps being loaded from the filesystem in the UI thread by creating asynctask in android which in effect creates a background thread to do the file loading. Steps Create the AsyncTask Class public class BitmapWorkerTask extends AsyncTask<File, Void, Bitmap> { WeakReference<ImageView> imageViewReferences; public BitmapWorkerTask(ImageView imageView) { imageViewReferences […]
Read moreThis is part 1 of the android tutorial performance series. We look for a quick and fast solution with testing Picasso image library. It’s mainly a convenience library for downloading images from the internet but also has caching support which we will be looking to use to improve the performance of the recyclerview image gallery […]
Read moreCreate android video app is a short video tutorial describing how to create an android video application. The concepts are based on the how to create an android camera app using intents, so if you are brand new to android programming I recommend you view that series first. For I will be skipping the fundamentals […]
Read moreLoad Bitmaps Properly Part 6 explains the issues involved when loading bitmaps and the correct procedure to use.
Read moreSave Photo to Storage Part 5 explains how to create a file whose location will be passed to the camera application where it will save the photo on capture.
Read moreDisplay Thumbnail Part 4 grabs the bitmap returned from the external camera application and puts it on to the image view created in the layout.
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