Chrome’s data disaster: Browser update wipes out Android app data, Ars Technica

************************************** /Someone really likes Google Chrome.

Google’s latest Chrome update is causing a headache for users and developers of some Android apps. Chrome 475, which isrolling out across desktop and mobile OSes, has beencausing data lossfor some other seemingly unrelated Android apps. Thanks to this bug, specifically on Android, updating your browser can now do something likewipe out the datain your Finance app.

The connection between Chrome and Android app data might not be clear, but Chrome on Android isn’t always just the browser that starts up when you press on the Chrome icon. For some versions of Android, the Chrome app can also provide the built-in HTML render for the entire OS. Apps can call on the system render to display in-app Web content (the API is called “WebView”), and, in this case, an instance of Chrome would seamlessly start up and draw HTML content inside your app. Whether you want to call them “HTML apps” or “Web wrappers,” it’s not uncommon for apps to basically beonlya WebView. These apps just turn on and load a webpage, and the Web wrapper provides native Android features like an app drawer icon, full-screen interface, and Play Store distribution. These apps look and work mostly like native apps from a user’s perspective, and it’s hard for even technical users to tell the difference. Cross-platform development is a lot easier when you use HTML, though, since HTML code works everywhere.

The data loss happened becauseGoogle changedwhere Chrome stores profile data without entirely migrating the old data. WebView-based apps can store data through APIs like localstorage, WebSQL, and indexedDB, and apps that use these APIs will suddenly stop finding their data after the user upgrades to Chrome (************************************************************. The data isn’tdeleted, it’s just misplaced. But to a user, there’s no difference. Their favorite HTML-based app will reset itself to a freshly installed state, and their data won’t be visible. By default, app updates on Android happen automatically and without user interaction, so for most users, their app will just wipe itself out and they won’t know why.