Android Studio not generating data store indexes for Google App Engine -

whenever run appengine project on local host , run queries datastore-indexes-auto.xml file not generate indexes. i've tried adding autogenerate="true" didn't change thing.

whenever run project file gets updates displays same text:

<!-- indices written @ wed, 27 jan 2016 21:08:31 cat -->  <datastore-indexes/> 

i've searched fix issue couldn't find same problem.

this happens app engine modules have on android studio.

i'm using android studio 1.2.2 , libraries i'm using are:

• app engine sdk 1.9.21;
• objectify 5.0.

making comment answer.

you need set autogenerate="true" attribute in web-inf/datastore-indexes.xml file:

from using automatic index configuration:

determining indexes required application's queries manually can tedious , error-prone. thankfully, development server can determine index configuration you. use automatic index configuration, add attribute autogenerate="true" web-inf/datastore-indexes.xml file's <datastore-indexes> element. automatic index configuration used if app not have datastore-indexes.xml file.