feat: Support R8 (#678)

* feat: Support R8

Author: bruno-garcia

sentry-android-gradle-plugin/download-sentry-cli.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 cd $(dirname "$0")
 REPO=getsentry/sentry-cli
-VERSION=1.37.4
+VERSION=1.38.0
 PLATFORMS="Darwin-x86_64 Linux-i686 Linux-x86_64 Windows-i686"
 
 rm -f src/main/resources/bin/sentry-cli-*

sentry-android-gradle-plugin/src/main/groovy/io/sentry/android/gradle/SentryPlugin.groovy

@@ -103,12 +103,21 @@ class SentryPlugin implements Plugin<Project> {
      * @return
      */
     static Task getProguardTask(Project project, ApplicationVariant variant) {
-        def name = "transformClassesAndResourcesWithProguardFor${variant.name.capitalize()}"
-        def rv = project.tasks.findByName(name)
-        if (rv != null) {
-            return rv
+        def names = [
+                // Android Studio 3.3 includes the R8 shrinker.
+                "transformClassesAndResourcesWithR8For${variant.name.capitalize()}",
+                "transformClassesAndResourcesWithProguardFor${variant.name.capitalize()}"
+        ]
+
+        def rv = null
+        names.each {
+            rv = project.tasks.findByName(it)
+            if (rv != null) {
+                return rv
+            }
         }
-        return project.tasks.findByName("proguard${name}")
+
+        return project.tasks.findByName("proguard${names[1]}")
     }
 
     /**