I'm Embedding a Flutter app as a module within an existing Android app (https://flutter.dev/docs/development/add-to-app/android/project-setup) and would like to know if/how I can use "--dart-define" to define compile-time constants. Tried using ./gradlew -Ddart-define=myVal=Value without any luck.
When building a typical Flutter app I would use the flutter command. In my case I'm continuing to use gradlew to build my app and it's unclear how to pass in --dart-define constants.
In android studio you may edit running configuration (press drop-down near "run" button -> "Edit configurations...") and define variables there ("Additional run args:" row):
--dart-define="http_serv=http://10.0.2.2:42627/" --dart-define="websocket=ws://10.0.2.2:42627/websocket"
Getting variable in code:
final checkArgs = String.fromEnvironment('http_serv', defaultValue: '');
If your project depends on the Android Archive (AAR).
You can pass the dart-defines in the command line.
flutter build aar --dart-define=myVal=Value
If your project depends on the module’s source code.
You can set dart-defines in gradle.properties in your android host project directory （or in yourHostProject/yourFlutter/.android/Flutter/ directory）.
--dart-define=myVal=Value
Explanation
.android/Flutter/build.gradle script executes "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle" script. When the flutter.gradle is executed, your dart files are compiled into naitive code.
flutter.gradle loads dart-defines from the .android/Flutter project instance （flutter.gradle#731-L734) and then, use it ( flutter.gradle#L1091-L1093).
To set the project instance value, you add --dart-define=myVal=Value into gradle.properties. (If you have multiple gradle.properties files, consider configuration order（Gradle properties in Gradle Docs).
flutter build web will build my flutter app with obfuscation and minification.
I want my error stack to be readable though.
How should I modify the command?
Try:
flutter build web --profile --dart-define=Dart2jsOptimization=O0
See:
https://github.com/flutter/flutter/blob/720dff6a94bd054e82ec4bf84b5cb802bbc52ddd/packages/flutter_tools/lib/src/build_system/targets/web.dart#L238-L239
There's an issue on github for this feature, feel free to upvote ;)
https://github.com/flutter/flutter/issues/96283
This is a old post, but I found the answer.
If you build the app with this line:
flutter build web --profile --source-maps
Then when you print a stacktrace, you'll get something like this:
Exception: Hello
at Object.wrapException (js_helper.dart:1123:37)
at _MyHomePageState__incrementCounter_closure.call$0 (main.dart:64:7)
at _MyHomePageState.setState$1 (framework.dart:1114:28)
at _MyHomePageState._incrementCounter$0 (main.dart:57:5)
at tear_off.<anonymous> (js_helper.dart:2099:9)
at _InkResponseState.handleTap$0 (framework.dart:909:26)
at tear_off.<anonymous> (js_helper.dart:2099:9)
at TapGestureRecognizer.invokeCallback$1$3$debugReport (recognizer.dart:253:16)
at TapGestureRecognizer.invokeCallback$2 (recognizer.dart:239:6)
at TapGestureRecognizer.handleTapUp$2$down$up (tap.dart:627:11)
If you use --source-maps with a release build, you will still get the dart file and line number, but the class/method names in the stacktrace will be obfuscated.
And, if you copy the lib directory into the root of built web directory, it will display the source code when you click on the dart file/line number in the stacktrace. Also, you can set breakpoints in the dart code, just like you can do when you do flutter run web.
The only way I have found to do this is to use flutter run -d chrome. We would then need to locate where the files on disk are located.
I followed instructions from Setting up the Engine development to build the flutter engine. Purpose of this was to use the texture support from Texture support for glfw. I could compile the flutter engine.
Next I wanted to use this engine and develop Texture based application. While compiling using the following command, I see that libflutter_linux_glfw.so and other platform files are copied from flutter/bin/cache/artifacts/engine.
flutter build linux
I added the dependency_overrides to pubspec.yaml as follows. But, no luck.
dependency_overrides:
sky_engine:
path: <base folder of engine>/engine/src/out/host_debug_unopt/gen/dart-pkg/sky_engine
sky_services:
path: <base folder of engine>/engine/src/out/host_debug_unopt/gen/dart-pkg/sky_services
Looking forward for the suggestions on the changes required to use files from engine/src/out/host_debug_unopt.
I could use compiled libflutter_linux_glfw.so by using --local-engine-src-path and --local-engine options of flutter given in the following link.
Using a locally-built engine with the flutter tool
I am new to flutter programming and I've created a demo app, its running fine on both android and iOS devices. I want to see .apk and .ipa file in flutter. Can anyone help me to get these files from Flutter? Where can I see these files in folders or is there any other solution.
For apk (Android) you need to run the command :
flutter build apk --release
If you want to split the apks per abi (Split Apk) then run
flutter build apk --target-platform android-arm,android-arm64,android-x64 --split-per-abi
For ipa (iOS) you need to run the command :
flutter build ios --release
From the console
P.S. --release is optional as it is by default
if you need debug build, just replace --release with --debug
you can find the released APK or IPA files form
build/app/outputs/flutter-apk/app-release.apk
For Android an APK is generated every time you build the app, e.g. with flutter run. You will find that in your project folder under <project>/build/app/outputs/apk/debug/app-debug.apk. If you want a release APK, have a look at the docs.
I'm not an iOS person, so I'm not sure an IPA is generated during development as in android. But looking at these docs it seems you can follow the standard steps on xcode to get it, as shown here.
For apk (Android) run the command :
flutter build apk --release
For ipa (iOS) run the command :
flutter build ios --release
Then to get actual .ipa file, open xcode -> Product -> archive -> Distribute App -> Ad Hoc -> Export
You can then save the .ipa(which is inside the Runner folder) file in any location
I also had this question and had a really tough time finding the right solution.
First of all in the terminal of your code editor type:
flutter build apk --release
and after that go to this location:
yourAppFolder/build/app/outputs/apk/release/app-release.apk
I do not do development for iOS so I don't know much about that.
For Android, an APK is generated every time you build the app, e.g. with flutter run. You will find that in your project folder under <project>/build/app/outputs/apk/debug/app-debug.apk.
Follow below steps to get .apk and .ipa from flutter app in Mac system
First, Enter below command in your terminal to go your project directory
cd $(PROJECT FOLDER PATH)
For android apk build to upload store, Enter below command
sudo $(FLUTTER SDK PATH till bin)/flutter build apk --release
To get ios ipa , Enter below command
sudo $(FLUTTER SDK PATH till bin)/flutter build ios --release
To get an apk, it is simple. Just use :
flutter build apk
To get an ipa, It is more complicated. First use :
flutter build ipa
Be careful to use flutter build ipa, not flutter build ios, because the second one builds a ".app" file instead of ".xcarchives" file.
Once you have the ".xcarchives" file, you can open it in XCode and click on "Distribute the app" to export an ipa file on your computer.
For iOS:
Step 1: open terminal and type cd "your flutter sdk path"
Step 2: cd export PATH=/Users/yourname/Downloads/flutter/bin:$PATH
Step 3: cd your project path
Step 4: flutter build ios --release
run step 1 to 4 in terminal.
After that open android studio and go to iOS folder path and open project.pbxproj file with ios module and in xcode you need to choose generic ios device and select archive, it will generate ipa build for you.
Android(After adding release build type run below command which will generate release apk with below version)
flutter build apk --build-name=1.0.1 --build-number=1
iOS
flutter build ios --release
For a detail explanation read the below article.
https://medium.com/#ralphbergmann/versioning-with-flutter-299869e68af4
For apk, you can use flutter build apk --release to get the release version of your apk on either windows/macOS.
For ipa, you have to use flutter build ios --release to get the release version of your apk on macOS.
Note: You can get a ipa on macOS only.
If you want this apk and .ipa with flavour then you can refer below commands for internal and production.
iOS:
flutter build ios --debug --flavor internal
flutter build ios --release --flavor production
android:
flutter build apk --debug --flavor internal
flutter build apk --release --flavor production
Updated for iOS :-
first you need to go to your current working directory and run the following command;
flutter build ios --release
After successfully completion of build, you can find build on below path;
/Users/sanjaybalaji/Documents/KiranFlutterApps/hb_calculator/build/ios/iphoneos/Runn
er.app.
you can check below screenshots for more details.
You can find your app apk after you run the app at path
<project_dir>/build/app/outputs/flutter-apk/app.apk
I am trying to build my release app in Flutter and when I run:
flutter run
everything works fine in debugging and test mode. But when I was trying to build a release app with:
flutter build apk
it creates an old first-release app of mine. That I created before and I try to reset the computer reset android and everything but not work what can I do to reset it and clear the cache?
I'm trying almost to delete and reset everything but they don't work.
What command that I have to run to fix it and create new version release apk
The solution is easy.
Just run flutter clean and run flutter build apk after that and it generates the updated app apk.
If you want to install it directly just run flutter install after the build command.
To all the beginners If you wish to release an apk of a flutter app just do:
flutter run --release
(and make sure to connect your device to a phone)
steps to ensure your phone is connected:
1. enable usb debugging mode in your phone
2.click on version number of your phone in system settings to enter into developer mode
3. change the phone mode to transferring file mode
After you run the command
go to build->apps->output->apk
run these command
flutter clean
and after that
flutter build apk --release
Run this command for making a bundle.
flutter build appbundle --target-platform android-arm,android-arm64,android-x64
If flutter clean and flutter build apk also generates apk with old version code in your pubspec.yaml change the version like this version: 1.0.2+2
Before + it is your version name and after + sign it is your version code
NOTE: Your new version number should be in the place of 2. Or you can use different format such as 1.2+2
You can run flutter clean Then run flutter build apk --split-per-abi to split the apk. It will build three apks and you can find them in build/app/outputs/flutter-apk/
Can be done easily by Android Studio