Personally test the size of flutter after packaging APK, quite satisfied

flutter Although I knew it early , But it hasn't been used yet , Today is the first time to pack Android APK try the size , Because of the choice flutter I must consider the size of his bag , If it's packed apk Than react native I'm sure I won't consider it .

Before packing, I guess apk It should be very big , At least, 30m about , But when I put release package build After coming out , I was shocked , Very satisfied ！

First installation flutter SDK yes 3.0.2, It's the latest edition .

Install and configure environment variables PATH after , Reset the command line interface , You can go through flutter doctor The command confirms that the installation has been successful .

flutter doctor

And then use flutter create learn_flutter

flutter create learn_flutter

The project is created in seconds , This ratio react-native The experience is much better .

Then I started flutter run function , It didn't work ！ Probably the error is ：

License for package Android SDK Build-Tools 30.0.3 not accepted.

  I thought my tools were not installed properly , But I couldn't find it 30.0.3 My tools ！ The answers on the Internet are sdk tool Install in , But I can't find 30.0.3 Version of .

Later it was found that flutter Of android sdk Configuration path problem . You should configure the following commands flutter Applied android sdk

flutter config --android-sdk /path/to/android/sdk

flutter config --android-studio-dir /path/to/android/studio

Important reminder ： Never in android The root file of the project  local.properties Middle configuration . I've been tossing around for an hour because of things like the Android project and react native That configuration android sdk route . Every run flutter run command , This configuration has been restored to the incorrect path .

Properly configured android adk After path , You can run it in the simulator , I tried to change the code , Can correctly see the effect in the simulator ！ Make sure this step is OK .

I'm going to start build release Version of  apk, But I have a new problem , The result is probably that java11 To pack apk.！ No matter the , I install java11.

Install well java11 after ( Environment variables replace java8) Need to be in Android engineering gradle.properties Add the following to the file jdk The path of

org.gradle.java.home=path/Java/jdk-11.0.15.1

And modify it Android engineering app\build.gradle file .

 

 

Okay , Finally, I can build apk 了 .build release apk The following command is required .

flutter build apk --target-platform android-arm,android-arm64

flutter build apk --target-platform android-arm,android-arm64 --split-per-abi

The command describes the following ：

⾸ First flutter build apk surface ⽰ The current build release package
after ⾯ android-arm,android-arm64,android-x64 It's a designation ⽣ Into a corresponding architecture release package
final --split-per-abi Schedule ⽰ Tell them that they need to be packaged according to the type we specify , If removed, the direct build contains all CPU Architecturally Apk package .

--obfuscate： Enable obfuscation
--split-debug-info=： Will be confused by ⽣ Yes map The symbol table is cached to this location
 

The first string of commands is packaged armv8a and armv7a The single instruction set of apk It's about 5.8M, I was surprised ！ This is small .

 

The second string of commands is packaged armv8a and armv7a Instruction set and in one apk Its size is 10.6M, I was equally surprised ！ Very satisfied ！

Finally come to a conclusion ,flutter 3.0 release apk and react native 0.68 release apk It's about the same size .

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