0X01、Error:Removing unused resources requires unused code shrinking to be turned on.

修改build.gradle文件中buildTypes的：

minifyEnabled值为true
debuggable值为 true

buildTypes {
 
    debug {
        signingConfig signingConfigs.release
        buildConfigField "boolean", "ISDEBUG", "true"
        debuggable true
        minifyEnabled true
        shrinkResources true
      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
    release {
        signingConfig signingConfigs.release
        minifyEnabled true
        zipAlignEnabled true
        debuggable true
        shrinkResources true
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}

0X02、WARNING: API 'variantOutput.getPackageApplication()' is obsolete and has been replaced with 'variant.getPackageApplicationProvider()'.

WARNING: API 'variantOutput.getPackageApplication()' is obsolete and has been replaced with 'variant.getPackageApplicationProvider()'.
It will be removed at the end of 2019.
For more information, see https://d.android.com/r/tools/task-configuration-avoidance.
To determine what is calling variantOutput.getPackageApplication(), use -Pandroid.debug.obsoleteApi=true on the command line to display a stack trace.
Affected Modules: app

修改build.gradle文件中buildTypes的:

//输出的为渠道包的名字，例如 xiaomi.apk
applicationVariants.all { variant ->
  variant.outputs.each { output ->
  def outFile = output.outputFile
   if (outFile != null && outFile.name.endsWith(".apk")) {
        def fileName = "${variant.productFlavors[0].name}" + ".apk"
         output.outputFile = new File(outFile.parent, fileName)
    }
  }

}

修改后：

//输出的为渠道包的名字，例如 xiaomi.apk
applicationVariants.all { variant ->
   variant.outputs.all { output ->                                                                            
     outputFileName="${variant.productFlavors[0].name}_${variant.versionCode}
      -${variant.versionName}-${releaseTime()}.apk"
   }

}

0X03、GC overhead limit exceeded

修改项目目录下的gradle.properties

org.gradle.jvmargs=-Xmx1024m

出现此错误的原因：OutOfMemoryError系列（2）: GC overhead limit exceeded