Improves AGP compatibility

booster-android-gradle-api/src/main/kotlin/com/didiglobal/booster/gradle/BaseVariant.kt

@@ -108,6 +108,7 @@ val BaseVariant.mergeResourcesTask: Task
  */
 val BaseVariant.processResTask: ProcessAndroidResources
     get() = when {
+        GTE_V4_X -> VariantScopeV40.getProcessResourcesTask(scope)
         GTE_V3_6 -> VariantScopeV36.getProcessResourcesTask(scope)
         GTE_V3_5 -> VariantScopeV35.getProcessResourcesTask(scope)
         GTE_V3_3 -> VariantScopeV33.getProcessResourcesTask(scope)

booster-android-gradle-v4_0/src/main/java/com/didiglobal/booster/gradle/VariantScopeV40.java

@@ -5,8 +5,10 @@ import com.android.build.gradle.internal.scope.AnchorOutputType;
 import com.android.build.gradle.internal.scope.InternalArtifactType;
 import com.android.build.gradle.internal.scope.SingleArtifactType;
 import com.android.build.gradle.internal.scope.VariantScope;
+import com.android.build.gradle.tasks.ProcessAndroidResources;
 import com.android.sdklib.BuildToolInfo;
 import org.gradle.api.file.FileSystemLocation;
+import org.gradle.api.tasks.TaskContainer;
 import org.jetbrains.annotations.NotNull;
 
 import java.io.File;
@@ -116,4 +118,10 @@ class VariantScopeV40 {
         return scope.getVariantData().getAllRawAndroidResources().getFiles();
     }
 
+    @NotNull
+    static ProcessAndroidResources getProcessResourcesTask(@NotNull final VariantScope scope) {
+        final TaskContainer tasks = scope.getGlobalScope().getProject().getTasks();
+        return (ProcessAndroidResources) tasks.getByName(scope.getTaskName("process", "Resources"));
+    }
+
 }