使用android studio发布android与flutter混合开发项目

一、生成androd签名证书

Android studio的Build > Grenerate Signed Bundle

选择apk

点击Create New

录入对应的签名信息；点击确定

对应盘符下就会生成一个签名文件

二、拷贝签名到项目目录

将签名文件拷入项目的app目录下

三、配置 greadle.properties

在greadle.properties中增加如下配置（对应上一步生成的签名证书的别名，密码）

MYAPP_RELEASE_KEY_ALIAS=android_keystore # 别名
MYAPP_RELEASE_KEY_PASSWORD=123456 # 别名密码
MYAPP_RELEASE_STORE_PASSWORD=123456 # 证书密码
MYAPP_RELEASE_STORE_FILE=android_keystore.jks # 证书路径

四、配置build.gradle（Module:app）

在android下增加如下配置（注意release中配置的value一定要对应到上一步greadle.properties中配置的key,否则编译报错）

android {
	# 省略其他配置 ....

	 # 新增配置
    signingConfigs{
        release{
            storeFile file(MYAPP_RELEASE_STORE_FILE)
            storePassword MYAPP_RELEASE_STORE_PASSWORD
            keyAlias MYAPP_RELEASE_KEY_ALIAS
            keyPassword MYAPP_RELEASE_KEY_PASSWORD
        }
    }
    buildTypes {
        release {
         # 省略其他配置 ....
         # 新增配置
        signingConfig signingConfigs.release
        }
    }
  # 省略其他配置 ....
}

五、解决 Compatible side by side NDK version was not found.

配置完成后
使用android studio运行gradlew assembleRelease 打包发布android与flutter混合开发项目提示

D:\learnFlutter\flutter_hybrid\Flutterhybridandroid>gradlew assembleRelease

Compatible side by side NDK version was not found.
Unable to strip library 'D:\learnFlutter\flutter_hybrid\Flutterhybridandroid\app\build\intermediates\merged_native_libs\release\out\lib\arm64-v8a\libapp.so' due to missing strip tool for ABI 'ARM64_V8A'. Packaging it as is.
Unable to strip library 'D:\learnFlutter\flutter_hybrid\Flutterhybridandroid\app\build\intermediates\merged_native_libs\release\out\lib\armeabi-v7a\libflutter.so' due to missing strip tool for ABI 'ARMEABI_V7A'. Packaging it as is.
62 actionable tasks: 59 executed, 3 up-to-date

Android studio的File->Project Structure窗口下进行NDK的相关下载

等待下载完成

现在完成后会自动同步ndk路径

点击OK后gradle会自动同步

六、解决 Compatible side by side NDK version was not found.

有提示了另一个错误

Compatible side by side NDK version was not found.
Unable to strip library 'D:\learnFlutter\flutter_hybrid\Flutterhybridandroid\app\build\intermediates\merged_native_libs\release\out\lib\arm64-v8a\libapp.so' due to missing strip tool for ABI 'ARM64_V8A'. Packaging it as is.
Unable to strip library 'D:\learnFlutter\flutter_hybrid\Flutterhybridandroid\app\build\intermediates\merged_native_libs\release\out\lib\armeabi-v7a\libflutter.so' due to missing strip tool for ABI 'ARMEABI_V7A'. Packaging it as is.
62 actionable tasks: 59 executed, 3 up-to-date
D:\learnFlutter\flutter_hybrid\Flutterhybridandroid>gradlew assembleRelease
62 actionable tasks: 8 executed, 54 up-to-date

根据android官网提示进行ndk版本配置

到安装的ndk目录下找到souce.propertites打开
根据
在build.properties中配置ndk版本
配置完成gradle自动同步

七、最后执行 gradlew assembleRelease打包

终于没有提到错误了

D:\learnFlutter\flutter_hybrid\Flutterhybridandroid>gradlew assembleRelease
62 actionable tasks: 5 executed, 57 up-to-date

在project 目录下也看见了久违的app-release.apk

最后就可以将这个apk发到真机安装了