How to filter items by a field in Firebase?

Question

"Products" : {
    "DateTime" : {
      "category" : "Mobile Phones",
      "pid" : "",
      "pname" : "",
      "price" : "",
    }
  } 

Hello I am developing an android app using firebase. I am able to list all products in my firebase database. However, I would like to show products based on the category (ex: Mobile Phones, Tablets etc). How do I do this?

Answer 1

you can use a compound query like:

Query products = db.collection("Products/DateTime").whereEqualTo("category", YOUR_CATEGORY);

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