Optimizing Android PopupWindow and Snackbar UI Thread to Prevent Frame Drops

To eliminate frame drops caused by animated PopupWindow and Snackbar conflicts, the article shows how moving costly view inflation and show/dismiss operations to a dedicated HandlerThread—while still invoking show() on the UI thread—creates a separate UI thread that respects Android’s thread‑checking rules and keeps animations smooth.

AndroidPopupWindowUI Thread

0 likes · 20 min read

Optimizing Android PopupWindow and Snackbar UI Thread to Prevent Frame Drops

Sohu Tech Products

Apr 6, 2022 · Mobile Development

Complete Guide to Updating UI from Background Threads in Android

This article explains why Android forbids UI updates from background threads, analyzes the underlying framework source code to trace the view hierarchy and thread checks, and presents several techniques—both general and view‑specific—to safely modify UI without triggering exceptions.

AndroidBackground ThreadUI Thread

0 likes · 17 min read

Complete Guide to Updating UI from Background Threads in Android

Sohu Tech Products

Jun 16, 2021 · Mobile Development

Understanding the Android Window Mechanism: From PhoneWindow to ViewRootImpl

This article explains the Android Window mechanism in depth, covering the roles of PhoneWindow, WindowManagerImpl, DecorView, ViewRootImpl, and their interactions during Activity startup, view creation, and rendering, with detailed code examples and step‑by‑step analysis.

AndroidFrameworkMobile Development

0 likes · 17 min read

Understanding the Android Window Mechanism: From PhoneWindow to ViewRootImpl

Sohu Tech Products

Mar 10, 2021 · Mobile Development

Understanding Android SOFT_INPUT_ADJUST Modes: Principles, Implementation and Usage

This article explains the five Android soft‑input adjustment modes (RESIZE, PAN, UNSPECIFIED, NOTHING and the method to obtain the visible window frame), analyzes their underlying ViewRootImpl mechanisms with code examples, and demonstrates practical demos showing how each mode affects layout and scrolling behavior.

PANResizeViewRootImpl

0 likes · 20 min read

Understanding Android SOFT_INPUT_ADJUST Modes: Principles, Implementation and Usage

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.

CalledFromWrongThreadExceptionDialogHandler

0 likes · 16 min read

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