[WIP] Fix tab crash when index changes before layout #152947
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chunhtai
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Aug 6, 2024
| // Dispose if we had one already, this can happen if the index of the tab | ||
| // controller, which sets _currentIndex, changes before we have laid out. | ||
| _pageController?.dispose(); | ||
| _pageController = PageController( |
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Instead of doing this, can _pageController somehow sets its _PagePosition's _pageToUseOnStartup if the viewport dimension is not yet applied?
| if (_controller!.index != _currentIndex) { | ||
| _currentIndex = _controller!.index; | ||
| _warpToCurrentIndex(); | ||
| if (_pageCanChange()) { |
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what happen if this is false? do we just drop the change?
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…s are set (#153017) ## Description This PR fixes `PageController` throwing when using `jumpToPage` or `animateToPage` to switch page before the viewport dimensions were retrieved. Solution based on #152947 (comment). ## Related Issue Fixes #86222. Fixes #152079 ## Tests Adds 2 tests.
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…s are set (flutter#153017) ## Description This PR fixes `PageController` throwing when using `jumpToPage` or `animateToPage` to switch page before the viewport dimensions were retrieved. Solution based on flutter#152947 (comment). ## Related Issue Fixes flutter#86222. Fixes flutter#152079 ## Tests Adds 2 tests.
DBowen33
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…s are set (flutter#153017) ## Description This PR fixes `PageController` throwing when using `jumpToPage` or `animateToPage` to switch page before the viewport dimensions were retrieved. Solution based on flutter#152947 (comment). ## Related Issue Fixes flutter#86222. Fixes flutter#152079 ## Tests Adds 2 tests.
Buchimi
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…s are set (flutter#153017) ## Description This PR fixes `PageController` throwing when using `jumpToPage` or `animateToPage` to switch page before the viewport dimensions were retrieved. Solution based on flutter#152947 (comment). ## Related Issue Fixes flutter#86222. Fixes flutter#152079 ## Tests Adds 2 tests.
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WIP - I am not sure this is the right fix, as I've worked on it it's grown in complexity.
This issue is urgent for an internal customer (b/357067239)
This crash can happen from multiple code paths, the customer issue does not have a repro, but I found two in the issue tracker:
TabBarViewcrashes when switching index before layout #86222I think these PRs are related, which is why the CC for @bleroux & @chunhtai - what do you two think here? I broke 3 tests here, not sure if this is the right way to go.
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