Flutter - 找不到 com.transistorsoft:tsbackgroundfetch:+ 的任何匹配项，因为没有可用的 com.transistorsoft:tsbackgroundfetch 版本

Question

背景获取：^1.1.6

即使在终止应用程序后，我也使用上述插件每 15 分钟执行一次任务。但是添加上述库后我的应用程序抛出错误

* What went wrong:
Execution failed for task ':app:checkDebugAarMetadata'.
> Could not resolve all files for configuration ':app:debugRuntimeClasspath'.
   > Could not find any matches for com.transistorsoft:tsbackgroundfetch:+ as no versions of com.transistorsoft:tsbackgroundfetch are available.
     Searched in the following locations:
       - https://dl.google.com/dl/android/maven2/com/transistorsoft/tsbackgroundfetch/maven-metadata.xml
       - https://jcenter.bintray.com/com/transistorsoft/tsbackgroundfetch/maven-metadata.xml
       - https://maven.google.com/com/transistorsoft/tsbackgroundfetch/maven-metadata.xml
       - https://storage.googleapis.com/download.flutter.io/com/transistorsoft/tsbackgroundfetch/maven-metadata.xml
       - https://repo.maven.apache.org/maven2/com/transistorsoft/tsbackgroundfetch/maven-metadata.xml
       - file:/Users/rsoft/StudioProjects/salezrobot/android/app/libs/com/transistorsoft/tsbackgroundfetch/maven-metadata.xml
     Required by:
         project :app > project :background_fetch

Answer 1

添加这个android/build.gradle：

maven {
   url "${project(':background_fetch').projectDir}/libs"
}

到allprojects/repositories，而不是到buildscript/repositories

Answer 2

您首先必须遵循以下指南进行设置：

1. IOS
2. 安卓