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Dev guide

OptimizelyJSON for the Android SDK

Describes the OptimizelyJSON object, which the Optimizely Feature Experimentation Android SDK uses to retrieve JSON.

Since statically typed languages lack native support for JSON, the Android SDK uses the OptimizelyJSON object to retrieve JSON in a flexible way.

Version

SDK v3.6 and higher

Methods

You can access JSON representations with the following methods:

MethodParametersDescription
toStringnoneReturns a string representation of the JSON object
toMapnoneReturns a map representation of the JSON object: (Map<String,Object>)
getValueString jsonKey, Class<T> clazzReturns a specified schema object (T) with the key/value pair of the JSON key you pass to this method.

If JSON key is null or empty, it populates your schema object with all JSON key/value pairs.

You can retrieve information for a nested member of the JSON data structure by using flattened JSON dot notation.
For example, if you want to access the key nestedField in {field1: {nestedField: "blah"}}, you can call getValue with the parameter "field1.nestedField2".

The OptimizelyJSON object is defined as follows:

public class OptimizelyJSON {
    public String toString();
  
    public Map<String,Object> toMap();
  
    public <T> T getValue(@Nullable String jsonKey, Class<T> clazz) throws JsonParseException
}

Examples

You can easily use the OptimizelyJSON object, for example to:

  • Get a JSON string by calling the toString method, or
  • Retrieve a specified schema from the OptimizelyJSON object by calling the getValue method.

The following example shows how to use an OptimizelyJSON object to populate a schema object you declare.

//declare a schema object into which you want to unmarshal OptimizelyJson content:
data class SSub(var field: String)

data class SObj(
   var field1: Int,
   var field2: Double,
   var field3: String,
   var field4: SSub
)

try {
   //parse all json key/value pairs into your schema, sObj
   val robj = optlyJSON.getValue(null, SObj::class.java)

   //or, parse the specified key/value pair with an integer value
   val rint = optlyJSON.getValue("field1", Int::class.java)

   //or, parse the specified key/value pair with a string value
   val rstr = optlyJSON.getValue("field4.field", String::class.java)
} catch (e: JsonParseException) {
   e.printStackTrace()
}
//declare a schema object into which you want to unmarshal OptimizelyJson content:
class SSub {
   String field;
}

class SObj {
   int field1;
   double field2;
   String field3;
   SSub field4;
}

try {
   //parse all json key/value pairs into your schema, sObj
   SObj robj = optlyJSON.getValue(null, SObj.class);

   //or, parse the specified key/value pair with an integer value
   Integer rint = optlyJSON.getValue("field1", Integer.class);

   //or, parse the specified key/value pair with a string value
   String rstr = optlyJSON.getValue("field4.field", String.class);
} catch (JsonParseException e) {
   e.printStackTrace();
}