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* Update `simplistic_editor` for Flutter 3.4 beta * Re-enable beta and master CI * Disable on master * Added sample code for using plugins and channels from background isolates. * goderbauer feedback 1 * goderbauer feedback2 * goderbauer feedback 3 * Add `background_isolate_channels` to CI * Enable beta CI * Enable all `stable` CI projects * `dart fix --apply` * `print` -> `denugPrint` * Make deps min version not pinned * Drop `_isDebug` * Remove unused import * `dart format` * Fixup `linting_tool` * Fixup `form_app` * Enable all `master` CI * Basic fixes * Patch `simplistic_editor` * Fix nl at eol * Comment out `simplistic_editor` * Incorporating @bleroux's latest changes * Clean up CI scripts * Copy `experimental/material_3_demo` to top level * Update `game_template` * Update `animations` * Update `desktop_photo_search` * Update `flutter_maps_firestore` * Update `form_app` * Update `infinite_list` * Update `isolate_example` * Update `jsonexample` * Update `navigation_and_routing` * Update `place_tracker` * Update `platform_channels` * Update `platform_design` * Update `provider_shopper` * Fixup `context_menus` * `dart format` * Update the main `material_3_demo` * Make `tool/flutter_ci_script_stable.sh` executable again Co-authored-by: Bruno Leroux <bruno.leroux@gmail.com> Co-authored-by: Aaron Clarke <aaclarke@google.com>
Isolate Example
A sample application that demonstrate best practices when using isolates.
Goals
- Display the performance benefits of isolates when using them in the right situation.
- Show how to use the
computemethod for straightforward computations. - Demonstrate how to initialize and use an isolate.
- Show the cost of moving data between isolates and provide alternatives.
The important bits
performance_page.dart
Compares running a large computation on the main isolate with running the same calculation
on a second isolate. When the main isolate is used, Flutter is unable to render new frames, and
the SmoothAnimationWidget's animation freezes.
infinite_process_page.dart
Creates an isolate used to run an infinite loop that sums batches of 100M randomly generated numbers at a time. Users can start, terminate, pause, and resume the isolate, as well as modify how the calculation is performed.
data_transfer_page.dart
Demonstrates how expensive it is to move large amounts of data between isolates and a better alternative to move data. This page creates an isolate that can add up a list of numbers and gives users three options for how to provide it with input:
- Send values normally using a List
- Send the values using TransferableTypedData
- Generate the values on the second isolate, so no copying is necessary
Users can then compare the performance of each approach using the displayed timestamps.
Questions/issues
If you have a general question about any of the techniques you see in the sample, the best places to go are:
If you run into an issue with the sample itself, please file an issue in the main Flutter repo.