Android SDK - Setting Global Properties

Setting Global Properties

Define custom properties that automatically attach to every session and event sent from your app, enabling detailed data segmentation in reports.

Global properties let you track any user, app mode, or contextual information you need. For example, in a gaming app, create a "Level" property initialized to "0" that updates as users progress. All sessions and events include this property, allowing you to analyze sessions, event counts, and revenue broken down by user level.

Property Specifications

Limits and Persistence

Understand the constraints and persistence behavior of global properties.

  • Maximum Properties: Define up to 5 global properties per app installation
  • Persistence: Properties persist between app launches with their most recent values until explicitly unset or the app is uninstalled
  • Character Limit: Property names and values can be up to 200 characters long. Longer values are automatically truncated to 200 characters
  • Data Availability: Global properties are accessible in user-level exports and postbacks. Contact your Singular customer success manager for updates on aggregate reporting support

Setting Global Properties at Initialization

Configure via SingularConfig

Set global properties during SDK initialization using the withGlobalProperty method before calling Singular.init() .

Since global properties persist between app launches, properties may already exist with different values. Use the overrideExisting parameter to control whether the new value should override existing values.

Kotlin Java
// Set global properties during initialization
val config = SingularConfig("SDK_KEY", "SDK_SECRET")
    .withGlobalProperty("MyProperty", "MyValue", true)
    .withGlobalProperty("AnotherProperty", "AnotherValue", true)

Singular.init(applicationContext, config)

Method Signature:

public SingularConfig withGlobalProperty(String key, String value, boolean overrideExisting)

Parameters:

  • key: Property name (max 200 characters)
  • value: Property value (max 200 characters)
  • overrideExisting: Whether to override an existing property with the same key

Managing Properties After Initialization

Set Global Property

Add or update a global property at any point during the app's runtime.

Kotlin Java
// Set a global property after initialization
val result = Singular.setGlobalProperty("MyProperty", "MyValue", true)
if (result) {
    Log.d("Singular", "Property set successfully")
} else {
    Log.e("Singular", "Failed to set property")
}

Method Signature:

public static boolean setGlobalProperty(String key, String value, boolean overrideExisting)

Returns: true if the property was set successfully, false otherwise

Important:

  • The method returns false if the key is null or empty
  • The method returns false if Singular.init() has not been called yet
  • If 5 properties already exist and you attempt to add a new one, the method returns false
  • If a property with the same key already exists and overrideExisting is false , the value is not replaced and the method returns false
  • The overrideExisting parameter determines whether to replace existing property values
  • Check the return value to confirm the property was set successfully

Get Global Properties

Retrieve all currently set global properties and their values as a Map.

Kotlin Java
// Retrieve all global properties
val properties: Map<String, String> = Singular.getGlobalProperties()

// Iterate through properties
properties.forEach { (key, value) ->
    Log.d("Singular", "Property: $key = $value")
}

Method Signature:

public static Map<String, String> getGlobalProperties()

Returns: A Map containing all global property key-value pairs


Unset Global Property

Remove a specific global property by its key.

Kotlin Java
// Remove a specific global property
Singular.unsetGlobalProperty("MyProperty")

Method Signature:

public static void unsetGlobalProperty(String key)

Parameters:

  • key: The name of the property to remove

Clear All Global Properties

Remove all global properties at once.

Kotlin Java
// Remove all global properties
Singular.clearGlobalProperties()

Method Signature:

public static void clearGlobalProperties()

Best Practice: Use clearGlobalProperties() when a user logs out or when you need to reset all custom tracking properties to their default state.


Implementation Example

Complete Usage Pattern

Track app-level and user-specific properties throughout the application lifecycle.

Kotlin Java
// Initialize SDK with app-level global properties
val config = SingularConfig("SDK_KEY", "SDK_SECRET")
    .withGlobalProperty("app_version", BuildConfig.VERSION_NAME, true)

Singular.init(applicationContext, config)

// Set third-party identifier on login
fun onUserLogin(thirdPartyUserId: String) {
    val success = Singular.setGlobalProperty("third_party_identifier", thirdPartyUserId, true)
    if (success) {
        Log.d("Singular", "Third-party identifier set")
    }
}

// Clear third-party identifier on logout
fun onUserLogout() {
    Singular.unsetGlobalProperty("third_party_identifier")
    Log.d("Singular", "Third-party identifier cleared")
}

Best Practice: Sync third-party analytics identifiers (e.g., Mixpanel distinct_id, Amplitude user_id) to Singular global properties for unified cross-platform tracking. Set user-specific identifiers on login and clear them with unsetGlobalProperty() on logout. App-level properties like app_version persist across sessions.