Tencent/QMUI_iOS

你好，我按照demo中处理的横竖屏切换， 并且也是正常的，但是app进入后台，又返回前台后，获取到的高度值是错的

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#1615 opened on Jan 14, 2025

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 (0 comments) (0 reactions) (0 assignees)Objective-C (7,200 stars) (1,444 forks)batch import
help wanted

Description

你好，我按照demo中处理的横竖屏切换， 并且也是正常的，但是app进入后台，又返回前台后，获取到的UIScreen.main.bounds.height却是竖屏的高度，是什么原因？

Contributor guide

Tech stack
objective cios
Domain
mobile
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Basic iOS developmentUnderstanding of view lifecycle
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50
Research direction
Investigate how QMUI iOS handles orientation changes, particularly when the app transitions from background to foreground. Check if the app listens for UIDevice.orientationDidChangeNotification or UIApplication.didBecomeActiveNotification. Look into files like QMUIAssetLibrary or QMUICommonViewController for orientation related code. The issue may require updating the stored bounds in response to UIApplication.didBecomeActiveNotification or ensuring the correct orientation is returned when querying UIScreen.main.bounds.