This PR modifies the `flutter create --empty` command to not delete the `test/` folder when run on an existing app project.
Before:
```bash
flutter create my_app --empty
mkdir my_app/test
if test -d my_app/test; then echo "test exists"; else echo "test does not exist"; fi # test exists
flutter create my_app --empty
if test -d my_app/test; then echo "test exists"; else echo "test does not exist"; fi # test does not exist
```
After:
```bash
flutter create my_app --empty
mkdir my_app/test
if test -d my_app/test; then echo "test exists"; else echo "test does not exist"; fi # test exists
flutter create my_app --empty
if test -d my_app/test; then echo "test exists"; else echo "test does not exist"; fi # test exists
```
Fixes https://github.com/flutter/flutter/issues/134928
When Swift Package Manager feature is enabled, create app and create plugin will have Swift Package Manager integration already added and will not need to undergo a migration.
Fixes https://github.com/flutter/flutter/issues/146371.
```
flutter config --enable-swift-package-manager
flutter create --ios-language swift --platforms ios,macos swift_app_name
flutter create --ios-language objc --platforms ios objc_app_name
flutter create --template=plugin --ios-language swift --platforms ios,macos swift_plugin_name
flutter create --template=plugin --ios-language objc --platforms ios objc_plugin_name
```
## Description
This adds a check to make sure that the `--empty` flag isn't applied to non-app templates.
## Related Issues
- Fixes https://github.com/flutter/flutter/issues/141592
## Tests
- Added a test.
Specifies that compatible Java range stated in warning when Java version is incompatible with our template AGP & Gradle versions notes an exclusive upper bound Java version. This was a bug from https://github.com/flutter/flutter/pull/131444, and I will file a CP request to stable once this lands.
The warning uses [`getJavaVersionFor`](b5c8fd11e4/packages/flutter_tools/lib/src/android/gradle_utils.dart (L606)), which returns an exclusive upper bound, which is why this fix is necessary.
Adds warning to `flutter create` command that checks if detected Java version is compatible with the template AGP and template Gradle versions. If a developer is building for Android and their Java version is incompatible with either the AGP or Gradle versions that Flutter currently supports by default for new Flutter projects, then
- a warning will show noting the incompatibility and
- steps will be shown to fix the issue, the recommended option being to configure a new compatible Java version given that Flutter knows we can support the template Gradle/AGP versions and updating them manually may be risky (feedback on this approach would be greatly appreciated!)
Given that the template AGP and Gradle versions are compatible, this PR assumes that the detected Java version may only conflict with one of the template AGP or Gradle versions because:
- the minimum Java version for a given AGP version is less than the maximum Java version compatible for the minimum Gradle version required for that AGP version (too low a Java version will fail AGP compatibility test, but not Gradle compatibility).
- the maximum Java version compatible with minimum Gradle version for a given AGP version is higher than minimum Java version required for that AGP version (too high a Java version will fail Gradle compatibility test, but not AGP compatibility test).
Fixes https://github.com/flutter/flutter/issues/130515 in the sense that `flutter create foo`; `cd foo`; `flutter run` should always be successful.
Support for FFI calls with `@Native external` functions through Native assets on MacOS and iOS. This enables bundling native code without any build-system boilerplate code.
For more info see:
* https://github.com/flutter/flutter/issues/129757
### Implementation details for MacOS and iOS.
Dylibs are bundled by (1) making them fat binaries if multiple architectures are targeted, (2) code signing these, and (3) copying them to the frameworks folder. These steps are done manual rather than via CocoaPods. CocoaPods would have done the same steps, but (a) needs the dylibs to be there before the `xcodebuild` invocation (we could trick it, by having a minimal dylib in the place and replace it during the build process, that works), and (b) can't deal with having no dylibs to be bundled (we'd have to bundle a dummy dylib or include some dummy C code in the build file).
The dylibs are build as a new target inside flutter assemble, as that is the moment we know what build-mode and architecture to target.
The mapping from asset id to dylib-path is passed in to every kernel compilation path. The interesting case is hot-restart where the initial kernel file is compiled by the "inner" flutter assemble, while after hot restart the "outer" flutter run compiled kernel file is pushed to the device. Both kernel files need to contain the mapping. The "inner" flutter assemble gets its mapping from the NativeAssets target which builds the native assets. The "outer" flutter run get its mapping from a dry-run invocation. Since this hot restart can be used for multiple target devices (`flutter run -d all`) it contains the mapping for all known targets.
### Example vs template
The PR includes a new template that uses the new native assets in a package and has an app importing that. Separate discussion in: https://github.com/flutter/flutter/issues/131209.
### Tests
This PR adds new tests to cover the various use cases.
* dev/devicelab/bin/tasks/native_assets_ios.dart
* Runs an example app with native assets in all build modes, doing hot reload and hot restart in debug mode.
* dev/devicelab/bin/tasks/native_assets_ios_simulator.dart
* Runs an example app with native assets, doing hot reload and hot restart.
* packages/flutter_tools/test/integration.shard/native_assets_test.dart
* Runs (incl hot reload/hot restart), builds, builds frameworks for iOS, MacOS and flutter-tester.
* packages/flutter_tools/test/general.shard/build_system/targets/native_assets_test.dart
* Unit tests the new Target in the backend.
* packages/flutter_tools/test/general.shard/ios/native_assets_test.dart
* packages/flutter_tools/test/general.shard/macos/native_assets_test.dart
* Unit tests the native assets being packaged on a iOS/MacOS build.
It also extends various existing tests:
* dev/devicelab/bin/tasks/module_test_ios.dart
* Exercises the add2app scenario.
* packages/flutter_tools/test/general.shard/features_test.dart
* Unit test the new feature flag.
`package` template should not create platform folders. This happen cause by default all platforms are supported and tools didn't distinguish between package and other template, which makes all platforms are true for below code,
d186792c00/packages/flutter_tools/lib/src/project.dart (L374-L380)fixes: #119844 which make #116320 makes invalid. As for why tools created deprecated `Android Embedding`, `appManifestFile` does not exist for `package` template, which make below code to trigger,
https://github.com/flutter/flutter/blob/master/packages/flutter_tools/lib/src/project.dart#L768-L770
This does not happen with `module` and `plugin` as it have specific condition check for them. I try to reproduce it with `app` template but didn't succeed
* Use correct API doc link in create --sample help message
* Verify Flutter and Dart website links in tool help messages use https
* Adjust test failure reasoning message
* Add an integration test to plugin template example
Dart unit tests don't exercise host-side plugin code at all, so the
example tests in the plugin template currently have very little
meaningful coverage. This adds an integration test to the example app
when creating a plugin, so that there's an example of how to actually
test that a complete round-trip plugin call works.
This is done as a separate template that's currently only used by the
plugin template because I don't know what a good example for a
non-plugin case would be that isn't largely just a duplicate of the
widget tests. However, the integration test pre-includes conditionals
around the parts that are plugin-specific so that it can more easily be
expanded to other use cases later (e.g., in
https://github.com/flutter/flutter/issues/68818).
Part of https://github.com/flutter/flutter/issues/82458
* Add integration test to expected dependencies of a plugin app
* Test fixes
* Make an explicit test case
The recent survey suggests that some people are not finding documentation after they get started with Flutter, so let's just give them links right away. It might not help everyone but there's not really any downside so...
* Building shared C source code as part of the native build for platforms Android, iOS, Linux desktop, MacOS desktop, and Windows desktop.
* Sample code doing a synchronous FFI call.
* Sample code doing a long running synchronous FFI call on a helper isolate.
* Use of `package:ffigen` to generate the bindings.
