Android Firebase query on multiple keys

[Brendan]

Hello,

I'm coding with Firebase in an Android app. My firebase structure is as follows:

{

  "example": {

    "A": {

       "data": true

    },

    "B": {

       "data": true

    },

    "C": {

       "data": true

    }

  }

}

If I want to query on B and C, do I need to run two separate "addListenerForSingleValueEvent" for both B and C? Or is there a way to add B and C to one query? My app has a list of up to 60 results to check against the example node so I'm not sure if running 60 separate single value event listeners is efficient.

Thank you

[Kato Richardson]

Hi Brendan,

Multiple listeners are fine. If B and C share some common criterium, you can create a query to listen on items that match that. But you can't create one listener that listens at two unrelated places; if you think this through, it's by definition, two listeners unless they have some common thread.

☼, Kato

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Kato Richardson |

Developer Programs Eng |

kato...@google.com |

775-235-8398