0x01.安装 jdk-1.8
各种疑难杂症，先装jdk8再说
0x02.License for package Android SDK Build-Tools 29.0.2not accepted
AS环境中 SDK-manager 安装好 android-9
0x03.Could not get unknown property 'javaVersion' for object of type com.android.build.gradle.internal.CompileOptions
compileOptions{
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility javaVersion.VERSION_1_8
}改成
compileOptions {
sourceCompatibility 1.8
targetCompatibility 1.8
}