It is therefore important that you not lose this key! In order to install an updated version of an application, the new application must be signed by the same key. When an android phone has an application installed on it, it remembers the key that was used to sign it. Whenever you build a new version this same key is used to sign the new version. apk building process your application is signed with a digital private key which is associated with your account. IT IS IMPERATIVE THAT YOU MAKE YOUR OWN BACKUPS! A Word about keystores:ĭuring the. HOWEVER WE CAN OFFER NO GUARANTEE THAT DATA (LIKE YOUR PROJECTS) WILL NEVER BE LOST. MIT and Google, which operate the App Engine service on which MIT App Inventor relies, make best efforts to ensure that MIT App Inventor does not lose projects. To do this, click on 'Project->My Projects', check the box next to the name of your project and then select 'Project->Export selected project (.aia) to my computer.' This will download a zip file which contains your projects source code. It is therefore very important that you backup your application's source code. Once you publish your application in the Google Play Store, other people will now be depending upon you to fix bugs and otherwise maintain your application. You can now go to Google Play Publishing Home and follow the steps to publish your app to Google Play.įor more details, you may want to start with Introduction to Publishing on Google Play and Google Support on Uploading to Google Play. apk downloaded, you are ready to begin the publishing process. This will prompt you to save the application somewhere. Click the dropdown labled Package for phone.Navigate to the home screen of the app you want to download in App Inventor.Once you are done making your app, you can download your Android. You will need to increase the VersionCode and change the VersionName of your application when you upload a new version to the Play Store. For example, an initial VersionName could be 1.0 which can be updated to 1.1 after a small change and 2.0 after a larger change. A common structure is a decimal number which is increased by 1 for every major change and 0.1 for every minor change. VersionName is a String which can be anything you would like. It defaults to 1 and should be increased by one with every successive change whether it is a major change or a minor change. It is used by other apps to check if your app has been upgraded or downgraded. VersionCode is an integer value that will not be visible to Google Play Store users. You can set these in the designer under the properties panel for the Screen1 component. Applications built with App Inventor can be uploaded to Google Play! Version Your AppĮvery app you publish must have a VersionCode and a VersionName.

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