Merge pull request #14048 from alalek:issue_13522

modules/java/android_sdk/CMakeLists.txt

@@ -118,7 +118,9 @@ foreach(file ${seed_project_files_rel})
   configure_file("${__base_dir}/${file}" "${OPENCV_JAVA_DIR}/${file}" @ONLY)
   list(APPEND depends "${__base_dir}/${file}")
   get_filename_component(install_subdir "${file}" PATH)
-  install(FILES "${OPENCV_JAVA_DIR}/${file}" DESTINATION "${JAVA_INSTALL_ROOT}/${install_subdir}" COMPONENT java)
+  if(NOT file STREQUAL "build.gradle")
+    install(FILES "${OPENCV_JAVA_DIR}/${file}" DESTINATION "${JAVA_INSTALL_ROOT}/${install_subdir}" COMPONENT java)
+  endif()
 endforeach()
 
 list(APPEND depends gen_opencv_java_source "${OPENCV_DEPHELPER}/gen_opencv_java_source")