how to get random rows(parse objects) from parse table using android parse sdk?

Question

I have 500 records on parse class or table and now i need to get 10 random records out of 500 records?

Please tell me how can I do this.

 ParseQuery


        

Answer 1

This is working code for fetching random objects from given class in Parse

In cloud code,

Parse.Cloud.define("get10Obj",function(request,response)
{ 

query = new Parse.Query(request.params.movie);

Array.prototype.randomElement = function (min, max) {
return Math.floor(Math.random() * (max - min + 1)) + min;
}


query.find ({

success: function(results) {

        var final10 = [];

        for (var i = 0; i < 5; i++) {
            var myRandomElement = results.randomElement(0,results.length);

            if (final10.indexOf(myRandomElement) == -1) {
                final10.push(myRandomElement);
            } else {
                i--;
            }
        }
         var datalist =[];

        for(var j=0;j

In Android,

    HashMap params = new HashMap();
    params.put("movie", "The Matrix");

    ParseCloud.callFunctionInBackground("averageStars", params, new
       FunctionCallback() {
      void done(ParseObject ratings, ParseException e) {
       if (e == null) {
          // Do your stuff
          }
      }
   });

Thanks to st.derrick for biggest hint.