我正在尝试为一个使用蓝牙通信的应用程序启动一个颤振项目。我用的是颤振蓝。

不幸的是,当试图运行(在Android设备上)我创建的第一个示例时,我遇到了以下错误:

FAILURE: Build failed with an exception.

  * What went wrong:
  Execution failed for task ':app:processDebugManifest'.
  > Manifest merger failed : uses-sdk:minSdkVersion 16 cannot be smaller than version 19 declared in library [:flutter_blue] /home/maldus/Projects/flutter/polmac/build/flutter_blue/intermediates/manifests/full/debug/AndroidManifest.xml as the library might be using APIs not available in 16
    Suggestion: use a compatible library with a minSdk of at most 16,
            or increase this project's minSdk version to at least 19,
            or use tools:overrideLibrary="com.pauldemarco.flutterblue" to force usage (may lead to runtime failures)

如果我在Android Studio,我知道如何提升Android minSdkVersion,但在一个flutter项目(使用VSCode),我有点迷失。

是否有可能增加minSdkVersion与颤振,以及如何?


当前回答

使用新的Flutter项目(2.8.0),使用“Flutter样式”,您可以在本地更改最小sdk版本。属性(而不是编辑app/build。gradle文件)。

# android/local.properties

flutter.minSdkVersion=19

查看android/app/build。Gradle文件,你会看到这样的变量约束:

# android/app/build.gradle

android {

  defaultConfig {
    minSdkVersion flutter.minSdkVersion
    targetSdkVersion flutter.targetSdkVersion
    versionCode flutterVersionCode.toInteger()
    versionName flutterVersionName
  }
}

其他回答

这工作。使用新版本,现在可以直接从IDE更改它。 https://www.youtube.com/watch?v=ztjCMzBX18w

2.8或以上

构建。gradle更新

在更新到Flutter 2.8之前

android {
    compileSdkVersion 30

defaultConfig {
    applicationId "com.example.app"
    minSdkVersion 21
    targetSdkVersion 30
    versionCode flutterVersionCode.toInteger()
    versionName flutterVersionName
    multiDexEnabled true
}

更新到Flutter 2.8后:

android {
    compileSdkVersion flutter.compileSdkVersion

defaultConfig {
        applicationId "com.example.app"
        minSdkVersion flutter.minSdkVersion
        targetSdkVersion flutter.targetSdkVersion
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
    }

你应该从慢车转车。以下属性说明:

首先进入android->local.properties

从这里开始变化

像这样改变build.gradle

android {
    compileSdkVersion localProperties.getProperty('flutter.compileSdkVersion').toInteger()

defaultConfig {
    minSdkVersion localProperties.getProperty('flutter.minSdkVersion').toInteger()
    targetSdkVersion localProperties.getProperty('flutter.targetSdkVersion').toInteger()
    versionCode flutterVersionCode.toInteger()
    versionName flutterVersionName
}

在android/app/build中试试这个。graddel minSdkVersion 30应该修复它,但要确保你的kotlin版本在kotlin_version = '1.6.10'。

应用程序/构建。Gradle添加此版本代码

对于颤振v2.8

在当地。属性添加

sdk.dir='<path>'
flutter.sdk='<path>'
flutter.buildMode=debug
flutter.versionName=1.0.0
flutter.versionCode=1

flutter.minSdkVersion=21
flutter.targetSdkVersion=30
flutter.compileSdkVersion=30

app-level build.gradle

defaultConfig {
    minSdkVersion localProperties.getProperty('flutter.minSdkVersion').toInteger()
    targetSdkVersion localProperties.getProperty('flutter.targetSdkVersion').toInteger()
    versionCode flutterVersionCode.toInteger()
    versionName flutterVersionName
}

现在可以使用localProperties.getProperty()从属性文件中读取值。