For example, if you have a background or image that doesn’t require transparency, it’s typically a better idea to use JPG or WebP. These resources should be resized to a size closer to the largest device you plan to support while keeping in mind Android Screen Densities.Īlongside this, it’s very common that images are not using the proper file type for compression. Resizing and Optimizing ResourcesĬhances are, you have larger resources than you can actually display on a mobile phone in your project. Google’s R8 tooling will also remove unused resources it finds within your application at build time. Remove any unused resources as a first go-through. When developing a project and getting to the point of release, it’s very likely we’ll have left over resources that aren’t used within the application. It might be a better decision to set these items as Android resources as you can optimize these further. Since this embeds the resource into the assembly uncompressed, this can add quite a bit to your assemblies size. Note: If you’re using Xamarin.Forms, you’re most likely setting your images to EmbeddedResource. We can optimize our resources by removing unused resources, resizing individual resources to mobile sizes, converting drawables to webp/vectors, and much more. Typically the most impactful area contributing to our APK size coming in at 11.5MB, the resources in our project tend to be an afterthought of creating our application. Total – 32.2MB, accounting for 93% of total APK size (34.6MB).x – This file holds all of your application’s byte code that is executed by DVM or ART.lib – This folder includes native libraries for the respective ABIs that your application supports.assemblies – This folder includes all of the assemblies required for your application.res – This folder includes all the files under your Resources folder.There are four main areas that contribute to our large APK size: Looking at our APK from the top-down, we can see that the raw APK size is 34.6 MB and the download size is 23.4 MB. Feel free to grab a copy of this application to follow along. Viewing the APK from the top-downįor our example, we will be using the Smart Hotel 360 Mobile Application on GitHub. Using APK Analyzer will help you reduce the size of your APK by inspecting your DEX files and Android Resources. You can even compare differences between two APKs. Integrated inside Android Studio or usable from the command line, you can use apkanalyzer as a way to provide immediate insight into the composition of your APK. There are a few great disk usage tools that will allow you to do this. The first step to understanding what we can shrink within our Android applications is analyzing the APK. It would be quite a shame for your application to be one of the first to be uninstalled, purely for how large it is.īy shrinking our APK size, we can also improve how: Imagine if a user ran out of space on their device and your app was one of the biggest offenders for used space. In fact, it’s one of the key factors a user takes into mind when considering installing or uninstalling your application. When it comes to application size, bigger is not better. We need to keep this into consideration for our users to give them the absolute best mobile experience. Whether it’s how much of a charge your battery can hold, the amount of storage you have left, or the speed of your internet connection to view more cat gifs.
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