820fa28543
Issue number: resolves #25326 --------- <!-- Please do not submit updates to dependencies unless it fixes an issue. --> <!-- Please try to limit your pull request to one type (bugfix, feature, etc). Submit multiple pull requests if needed. --> ## What is the current behavior? <!-- Please describe the current behavior that you are modifying. --> The header flickers upon page transition when on iOS mode and using a condensed header: **Entering Page Two (P1 → P2):** When navigating to Page Two, which has a collapsing header (intended to be hidden until scroll), the header briefly flashes into view. This happens because the header is initially rendered with full `opacity: 1` before the component's logic can apply `opacity: 0` to hide it, causing a visible flicker. **Navigating Back (P2 → P1):** When navigating back, Page One's header briefly bleeds through the top of Page Two. Although Page Two is on top (`z−index: 100`), its collapsing header is set to `opacity: 0`. This transparency allows Page One header (`z−index: 99`) to become visible underneath, as the transparent area cannot block the content below it. The header flickers upon page transition when on iOS mode and using a fade header: **Entering Page Two (P1 → P2):** When navigating to Page Two, which has a fade header (should not have a background on load), the header background briefly flashes into view. This happens because the header is initially rendered with full `opacity: 1` before the component's logic can apply `opacity: 0` to hide it, causing a visible flicker. ## What is the new behavior? <!-- Please describe the behavior or changes that are being added by this PR. --> - Added a transition-specific class that is applied to the condensed ion-header element to override its default transparency. This guarantees the header to act as an opaque block during the page transition, eliminating visual flickering caused by early `opacity: 0` or the header underneath bleeding through. - Added a transition-specific class that is applied to the fade ion-header element to override its default opaque background. This guarantees the header to act as a transparent block during the page transition, eliminating visual flickering caused by default `opacity: 1`. ## Does this introduce a breaking change? - [ ] Yes - [x] No <!-- If this introduces a breaking change: 1. Describe the impact and migration path for existing applications below. 2. Update the BREAKING.md file with the breaking change. 3. Add "BREAKING CHANGE: [...]" to the commit description when merging. See https://github.com/ionic-team/ionic-framework/blob/main/docs/CONTRIBUTING.md#footer for more information. --> ## Other information <!-- Any other information that is important to this PR such as screenshots of how the component looks before and after the change. --> Dev build: `8.7.6-dev.11759524961.1cff6814`
Ionic
Ionic is an open source app development toolkit for building modern, fast, top-quality cross-platform native and Progressive Web Apps from a single codebase with JavaScript and the Web.
Ionic is based on Web Components, which enables significant performance, usability, and feature improvements alongside support for popular web frameworks like Angular, React, and Vue.
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| Project | Package | Version | Downloads | Links |
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| Core | @ionic/core |
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README.md |
| Angular | @ionic/angular |
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README.md |
| Vue | @ionic/vue |
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README.md |
| React | @ionic/react |
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README.md |
Looking for the ionic-angular package? Ionic 3 has been moved to the ionic-v3 repo. See Earlier Versions.
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The Ionic Conference App is a full featured Ionic app. It is the perfect starting point for learning and building your own app.
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Earlier Versions
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- Ionic 2/3: Moved to
ionic-team/ionic-v3 - Ionic 1: Moved to
ionic-team/ionic-v1