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

按照以下步骤更改minSdkVersion问题。

第一次= > YouProject_name / android / app / build.gradle

Second=> defaultconfig{//你可以在build中找到它。gradle}

defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId "com.umair.product_details_using_crud"
        minSdkVersion 16 // here you can change minSdkVersison
        targetSdkVersion 28
        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

如果你不知道,谷歌Playstore只允许minSdkVersion为20或以上。但是flutter仍然将默认minSdkVersion设置为16。您是否看到您将总是被迫为每个新项目手动更改?

以上所有建议都很好,但不是最好的,因为您将被迫调整构建。为你创建的每个新项目Gradle。

最好的方法是从全局minSdkVersion变量的源修改它的值,这样所有的项目,无论是新项目还是旧项目,都将采用它。记得颤振。minSdkVersion表示变量在flutter目录下(包含sdk)。

问题文件是flutter.gradle。

地址为:flutter-directory/packages/flutter_tools/gradle/flutter.gradle

class FlutterExtension {
    /** Sets the compileSdkVersion used by default in Flutter app projects. */
    static int compileSdkVersion = 31

    /** Sets the minSdkVersion used by default in Flutter app projects. */
    static int minSdkVersion = 16

    /** Sets the targetSdkVersion used by default in Flutter app projects. */
    static int targetSdkVersion = 31

将minSdkVersion的值从16更改为20或以上,并且不要打扰build.gradle中的代码。

如果你愿意,你可以看我在Youtube上做的一个视频,在下面解释:颤振配置minSdkVersion从16到20或以上

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
}
    **android/local.properties**
flutter.versionCode=1
flutter.minSdkVersion=21
flutter.targetSdkVersion=30
flutter.compileSdkVersion=31

  **android/app/build.gradle**
minSdkVersion localProperties.getProperty('flutter.minSdkVersion').toInteger()

targetSdkVersion localProperties.getProperty('flutter.targetSdkVersion').toInteger()
versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName

添加以下行到android/local。属性文件:

flutter.versionCode=1
flutter.versionName=0.0.1
flutter.flutterMinSdkVersion=24
flutter.flutterTargetSdkVersion=31

在android/app/build.gradle文件的"def versionName ="后面添加以下代码行:

def flutterMinSdkVersion = localProperties.getProperty('flutter.flutterMinSdkVersion')
if (flutterMinSdkVersion == null) {
    flutterMinSdkVersion = '16'
}

def flutterTargetSdkVersion = localProperties.getProperty('flutter.flutterTargetSdkVersion')
if (flutterMinSdkVersion == null) {
    flutterMinSdkVersion = '31'
}

最后编辑构建的部分。Gradle匹配如下:

    defaultConfig {
        applicationId "do.main.subdomain" // Use your App ID
        minSdkVersion flutterMinSdkVersion.toInteger()
        targetSdkVersion flutterTargetSdkVersion.toInteger()
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
    }

一旦所有这些都完成了,你就可以开始了。下次你想要更新一些东西时,你只需要更改一个文件。