Fix dependencies between tasks

Author: fmasa

README.md

@@ -142,9 +142,7 @@ FirebaseDatabase.getInstance().setPersistenceEnabled(false)
 
 This library is built with Gradle. 
 
-Run `./gradlew build` to build, the first time you run build it will fail as it requires the output of the custom `copyAars` and `extractClasses` 
-gradle tasks to be present in the build folder before the project will successfully compile. These tasks extract the jar files from the 
-Firebase Android library AAR files to the `build/jar` folder and run on `./gradlew build`.
+Run `./gradlew build` to build the library locally. 
 
 ### Implementation details
 

build.gradle.kts

@@ -41,21 +41,16 @@ val copyAars by tasks.registering(Copy::class) {
     into("build/aar")
 }
 
-val extractClasses by tasks.creating {
+val extractClasses by tasks.registering(Copy::class) {
     dependsOn(copyAars)
-    val aarFileTree = fileTree("build/aar")
-
-    aarFileTree.forEach { aarFile: File ->
-
-        dependsOn(
-            tasks.create(aarFile.name, Copy::class) {
-                from(zipTree(aarFile))
-                include("classes.jar")
-                fileMode = 0b01110110000
-                rename("classes.jar", aarFile.nameWithoutExtension + ".jar")
-                into("build/jar")
-            }
-        )
+    configurations["aar"].forEach { aarFile ->
+        copy {
+            from(zipTree(aarFile))
+            include("classes.jar")
+            fileMode = 0b01110110000
+            rename("classes.jar", aarFile.nameWithoutExtension + ".jar")
+            into("build/jar")
+        }
     }
 }