flutter 打包apk

第一步：生成key

keytool -genkey -v -keystore my-release-key.keystore -alias my-key-alias -keyalg RSA -keysize 2048 -validity 10000

第二步：在android/app下创建key目录，把生成的my-release-key.keystore放进去

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第三步：在android创建key.properties文件写入如下代码

storePassword=123456 ## 这里是之前设置的密码
keyPassword=123456 ## 这里是之前设置的密码
keyAlias=my-key-alias 
storeFile=key/my-release-key.keystore

第四步：找到android/app下的build.gradle修改如下内容
在 android { 上面加上下面这段

def keystorePropertiesFile=rootProject.file('key.properties')
def keystoreProperties = new Properties()
keystoreProperties.load(new FileInputStream(keystorePropertiesFile))

然后把

    buildTypes {
        release {
            // TODO: Add your own signing config for the release build.
            // Signing with the debug keys for now, so `flutter run --release` works.
            signingConfig signingConfigs.debug
        }
    }

修改为

signingConfigs {
    release {
        keyAlias keystoreProperties['keyAlias']
        keyPassword keystoreProperties['keyPassword']
        storeFile file(keystoreProperties['storeFile'])
        storePassword keystoreProperties['storePassword']
    }
}
buildTypes {
  release {
        signingConfig signingConfigs.release
    }
}

一切就绪：运行 flutter build apk 进行打包
我因为引入了 amap_base_map 导致闪退，所以打包时运行这段指令
flutter build apk --target-platform android-arm64