// java版本支持1.8
 compileOptions {
     sourceCompatibility JavaVersion.VERSION_1_8
     targetCompatibility JavaVersion.VERSION_1_8
 }

  可以添加混淆配置：
    // for HuiYanSDK
    "R.string.ocr_*",
    "R.string.rst_*",
    "R.string.net_*",
    "R.string.msg_*",
    "R.string.fl_*",

// 低版本的矢量图
implementation 'androidx.vectordrawable:vectordrawable:1.1.0'

需要更新support依赖到最新版本28.0.0:
implementation 'com.android.support:appcompat-v7:28.0.0'

// 兼容低版本矢量图依赖的组件库
implementation 'com.android.support:support-vector-drawable:28.0.0'
implementation 'com.android.support:animated-vector-drawable:28.0.0'