Tencent/QMUI_iOS

TZImagePickerController 在使用时 提示 QMUIAssert(NO, @"UINavigationBar (QMUI)", @"试图在 UINavigationBar 尚未添加到 window 上时就修改它的样式，可能导致 UINavigationBar 的样式无法与全局保持一致。");

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#1652 opened on Jun 10, 2025

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

Description

TZImagePickerController 在使用时 提示 QMUIAssert(NO, @"UINavigationBar (QMUI)", @"试图在 UINavigationBar 尚未添加到 window 上时就修改它的样式，可能导致 UINavigationBar 的样式无法与全局保持一致。");

Contributor guide

Tech stack
objective c
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.
needs investigation
Prerequisites
iOS UIKitUIViewController lifecycle
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
35
Research direction
The issue reports a QMUIAssert failure when using TZImagePickerController. The error indicates that UINavigationBar style is being modified before it is added to the window. Investigate the code in QMUI iOS that triggers this assertion, specifically in the UINavigationBar (QMUI) category. Determine if the issue is caused by user code incorrectly applying styles before the view is attached, or if it's a QMUI framework bug. Request more details from the reporter about the steps to reproduce.