IMPORTANT: In July 2025, we stopped releasing new versions of KTX modules, and we removed the KTX libraries from the Firebase Android BoM (v34.0.0). If you use KTX APIs from the previously released KTX modules, we recommend that you migrate your app to use KTX APIs from the main modules instead. For details, see the FAQ about this initiative.

com.google.firebase.perf

Classes

FirebasePerformance

The Firebase Performance Monitoring API.

Annotations

FirebasePerformance.HttpMethod

Valid HttpMethods for manual network APIs

Top-level functions summary

inline T

<T : Any?> trace(name: String, block: Trace.() -> T)

Creates a Trace object with given name and measures the time it takes to run the block wrapped by calls to start and stop.

Extension functions summary

`inline Unit`	`HttpMetric.trace(block: HttpMetric.() -> Unit)` Measures the time it takes to run the `block` wrapped by calls to start and stop using `HttpMetric`.
`inline T`	`<T : Any?> Trace.trace(block: Trace.() -> T)` Measures the time it takes to run the `block` wrapped by calls to start and stop using `Trace`.

Extension properties summary

FirebasePerformance

Firebase.performance

Returns the FirebasePerformance instance of the default FirebaseApp.

Top-level functions

trace

inline fun <T : Any?> trace(name: String, block: Trace.() -> T): T

Creates a Trace object with given name and measures the time it takes to run the block wrapped by calls to start and stop.

Extension functions

trace

inline fun HttpMetric.trace(block: HttpMetric.() -> Unit): Unit

Measures the time it takes to run the block wrapped by calls to start and stop using HttpMetric.

trace

inline fun <T : Any?> Trace.trace(block: Trace.() -> T): T

Measures the time it takes to run the block wrapped by calls to start and stop using Trace.

Extension properties

performance

val Firebase.performance: FirebasePerformance

Returns the FirebasePerformance instance of the default FirebaseApp.