问题：direct local .aar file dependencies are not supported when building an aar.

1.mylibrary 下 build.gradle 文件 .aar文件依赖修改：

之前为：

dependencies {implementation fileTree(dir: 'libs', include: ['*.jar','*.aar'])
}

更改为：

dependencies {compileOnly fileTree(dir: 'libs', include: ['*.jar','*.aar'])
}

2.app 下 build.gradle 文件添加以下：

dependencies {implementation project(':myLibrary')implementation fileTree(dir: '../myLibrary/libs', include: ['*.jar', '*.aar'])
}