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Flutter_Documentation

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Next build number
Xcode Cloud defaults the build number for new workflows to 1 and increments
it per successful build. If you’re using an existing app with a higher build
number, you’ll need to configure Xcode Cloud to use the correct build number
for its builds by simply specifying the Next Build Number in your iteration.Check out Setting the next build number for Xcode Cloud builds for more
information.
<topic_end>
<topic_start>Add Flutter to an existing app
<topic_end>
<topic_start>
Add-to-app
It’s sometimes not practical to rewrite your entire application in
Flutter all at once. For those situations,
Flutter can be integrated into your existing
application piecemeal, as a library or module.
That module can then be imported into your Android or iOS
(currently supported platforms) app to render a part of your
app’s UI in Flutter. Or, just to run shared Dart logic.In a few steps, you can bring the productivity and the expressiveness of
Flutter into your own app.The add-to-app feature supports integrating multiple instances of any screen size.
This can help scenarios such as a hybrid navigation stack with mixed
native and Flutter screens, or a page with multiple partial-screen Flutter
views.Having multiple Flutter instances allows each instance to maintain
independent application and UI state while using minimal
memory resources. See more in the multiple Flutters page.<topic_end>
<topic_start>
Supported features
<topic_end>
<topic_start>
Add to Android applications
<topic_end>
<topic_start>
Add to iOS applications
See our add-to-app GitHub Samples repository
for sample projects in Android and iOS that import
a Flutter module for UI.<topic_end>
<topic_start>
Get started
To get started, see our project integration guide for
Android and iOS:<topic_end>
<topic_start>
API usage
After Flutter is integrated into your project,
see our API usage guides at the following links:<topic_end>
<topic_start>
Limitations
<topic_end>
<topic_start>Add Flutter to Android
<topic_end>
<topic_start>
Topics
<topic_end>
<topic_start>Integrate a Flutter module into your Android project
Flutter can be embedded into your existing Android
application piecemeal, as a source code Gradle
subproject or as AARs.The integration flow can be done using the Android Studio
IDE with the Flutter plugin or manually.warning Warning
Your existing Android app might support architectures
such as mips or x86. Flutter currently only supports
building ahead-of-time (AOT) compiled libraries
for x86_64, armeabi-v7a, and arm64-v8a.Consider using the abiFilters Android Gradle
Plugin API to limit the supported architectures in your APK.
Doing this avoids a missing libflutter.so runtime crash,
for example:
<code_start>android {
//...
defaultConfig {
ndk {
// Filter for architectures supported by Flutter.
abiFilters 'armeabi-v7a', 'arm64-v8a', 'x86_64'
}
}
}<code_end>
The Flutter engine has an x86 and x86_64 version.
When using an emulator in debug Just-In-Time (JIT) mode,
the Flutter module still runs correctly.<topic_end>
<topic_start>
Integrate your Flutter module
<topic_end>
<topic_start>Integrate with Android Studio
The Android Studio IDE can help integrate your Flutter module.
Using Android Studio, you can edit both your Android and Flutter code
in the same IDE.You can also use IntelliJ Flutter plugin functionality like
Dart code completion, hot reload, and widget inspector.Android Studio supports add-to-app flows on Android Studio 2022.2 or later
with the Flutter plugin for IntelliJ.
To build your app, the Android Studio plugin configures your
Android project to add your Flutter module as a dependency.Open your Android project in Android Studio.Go to File > New > New Project….
The New Project dialog displays.Click Flutter.If asked to provide your Flutter SDK path, do so and click Next.Complete the configuration of your Flutter module.If you have an existing project:If you need to create a new Flutter project:Click Finish.lightbulb Tip
By default, your project’s Project pane might show the ‘Android’ view.
If you can’t see your new Flutter files in the Project pane,
set your Project pane to display Project Files.
This shows all files without filtering.<topic_end>
<topic_start>Integrate without Android Studio
To integrate a Flutter module with an existing Android app
manually, without using Flutter’s Android Studio plugin,
follow these steps:<topic_end>
<topic_start>Create a Flutter module
Let’s assume that you have an existing Android app at
some/path/MyApp, and that you want your Flutter
project as a sibling:This creates a some/path/flutter_module/ Flutter module project
with some Dart code to get you started and an .android/