Sohu Tech Products

Apr 22, 2020 · Mobile Development

Why Updating UI on the UI Thread Can Still Throw CalledFromWrongThreadException in Android Dialogs

This article explains why performing UI updates—even on the main UI thread—can still trigger CalledFromWrongThreadException when a Dialog is created on a background thread, by analysing ViewRootImpl, Handler, Looper, and the view hierarchy with practical code examples.