Before you begin
If you haven't already, add Firebase to your Android project.
Step 1: Add the Performance Monitoring SDK to your app
After you've added the Performance Monitoring SDK, Firebase automatically starts collecting data for your app's screen rendering and data related to your app's lifecycle (like app start time). To enable Firebase to monitor network requests, you must also add the Performance Monitoring Gradle plugin (next step).
In your module (app-level) Gradle file (usually
<project>/<app-module>/build.gradle.kts
or<project>/<app-module>/build.gradle
), add the dependency for the Performance Monitoring library for Android. We recommend using the Firebase Android BoM to control library versioning.dependencies { // Import the BoM for the Firebase platform implementation(platform("com.google.firebase:firebase-bom:33.4.0")) // Add the dependency for the Performance Monitoring library // When using the BoM, you don't specify versions in Firebase library dependencies implementation("com.google.firebase:firebase-perf") }
By using the Firebase Android BoM, your app will always use compatible versions of Firebase Android libraries.
(Alternative) Add Firebase library dependencies without using the BoM
If you choose not to use the Firebase BoM, you must specify each Firebase library version in its dependency line.
Note that if you use multiple Firebase libraries in your app, we strongly recommend using the BoM to manage library versions, which ensures that all versions are compatible.
dependencies { // Add the dependency for the Performance Monitoring library // When NOT using the BoM, you must specify versions in Firebase library dependencies implementation("com.google.firebase:firebase-perf:21.0.1") }
Recompile your app.
Step 2: Add the Performance Monitoring Gradle plugin to your app
After you've added the Performance Monitoring Gradle plugin, Firebase automatically starts collecting data for HTTP/S network requests. The plugin also enables you to instrument custom code traces using @AddTrace annotation.
In your root-level (project-level) Gradle file (
<project>/build.gradle.kts
or<project>/build.gradle
), add the Performance Monitoring Gradle plugin:Kotlin
plugins { // To benefit from the latest Performance Monitoring plugin features, // update your Android Gradle plugin dependency to at least v3.4.0 id("com.android.application") version "7.3.0" apply false // Make sure that you have the Google services Gradle plugin dependency id("com.google.gms.google-services") version "4.4.2" apply false // Add the dependency for the Performance Monitoring Gradle plugin id("com.google.firebase.firebase-perf") version "1.4.2" apply false }
Groovy
plugins { // To benefit from the latest Performance Monitoring plugin features, // update your Android Gradle plugin dependency to at least v3.4.0 id 'com.android.application' version '7.3.0' apply false // Make sure that you have the Google services Gradle plugin dependency id 'com.google.gms.google-services' version '4.4.2' apply false // Add the dependency for the Performance Monitoring Gradle plugin id 'com.google.firebase.firebase-perf' version '1.4.2' apply false }
In your module (app-level) Gradle file (usually
<project>/<app-module>/build.gradle.kts
or<project>/<app-module>/build.gradle
), add the Performance Monitoring Gradle plugin:Kotlin
plugins { id("com.android.application") // Make sure that you have the Google services Gradle plugin id("com.google.gms.google-services") // Add the Performance Monitoring Gradle plugin id("com.google.firebase.firebase-perf") ... }
Groovy
plugins { id 'com.android.application' // Make sure that you have the Google services Gradle plugin id 'com.google.gms.google-services' // Add the Performance Monitoring Gradle plugin id 'com.google.firebase.firebase-perf' ... }
Recompile your app.
Step 3: Generate performance events for initial data display
Firebase starts processing the events when you successfully add the SDK to your app. If you're still developing locally, interact with your app to generate events for initial data collection and processing.
Generate events by switching your app between background and foreground several times, interacting with your app by navigating across screens, and/or triggering network requests.
Go to the Performance dashboard of the Firebase console. You should see your initial data display within a few minutes.
If you don't see a display of your initial data, review the troubleshooting tips.
Step 4: (Optional) View log messages for performance events
Enable debug logging for Performance Monitoring at build time by adding a
<meta-data>
element to your app'sAndroidManifest.xml
file, like so:<application> <meta-data android:name="firebase_performance_logcat_enabled" android:value="true" /> </application>
Check your log messages for any error messages.
Performance Monitoring tags its log messages with
FirebasePerformance
. Using logcat filtering, you can specifically view duration trace and HTTP/S network request logging by running the following command:adb logcat -s FirebasePerformance
Check for the following types of logs which indicate that Performance Monitoring is logging performance events:
Logging trace metric: TRACE_NAME, FIREBASE_PERFORMANCE_CONSOLE_URL
Logging network request trace: URL
Click on the URL to view your data in the Firebase console. It may take a few moments for the data to update in the dashboard.
If your app isn't logging performance events, review the troubleshooting tips.
Step 5: (Optional) Add custom monitoring for specific code
To monitor performance data associated with specific code in your app, you can instrument custom code traces.
With a custom code trace, you can measure how long it takes your app to complete a specific task or set of tasks, such as loading a set of images or querying your database. The default metric for a custom code trace is its duration, but you can also add custom metrics, such as cache hits and memory warnings.
In your code, you define the beginning and the end of a custom code trace (and add any desired custom metrics) using the API provided by the Performance Monitoring SDK. For Android apps, you can also monitor the duration of specific methods using @AddTrace annotation.
Visit Add monitoring for specific code to learn more about these features and how to add them to your app.
Step 6: Deploy your app then review results
After you've validated Performance Monitoring using one or more test devices, you can deploy the updated version of your app to your users.
You can monitor performance data in the Performance dashboard of the Firebase console.
Known issues
The Performance Monitoring Gradle plugin v1.1.0 can cause a mismatch in Guava dependencies, resulting in the following error:
Error:Execution failed for task ':app:packageInstantRunResourcesDebug'. > com.google.common.util.concurrent.MoreExecutors.directExecutor()Ljava/util/concurrent/Executor;
If you see this error, you can either:
Upgrade the Performance Monitoring plugin to v1.1.1 or later (the most recent is v1.4.2).
Replace the Performance Monitoring plugin dependency line in your root-level (project-level) Gradle file (
<project>/build.gradle.kts
or<project>/build.gradle
), as follows:Kotlin
buildscript { // ... dependencies { // ... // Replace the standard Performance Monitoring plugin dependency line, as follows: classpath("com.google.firebase:perf-plugin:1.1.0") { exclude(group = "com.google.guava", module = "guava-jdk5") } } }
Groovy
buildscript { // ... dependencies { // ... // Replace the standard Performance Monitoring plugin dependency line, as follows: classpath('com.google.firebase:perf-plugin:1.1.0') { exclude group: 'com.google.guava', module: 'guava-jdk5' } } }
Performance Monitoring reports the total payload size for HTTP network requests based on the value set in the HTTP content-length header. This value might not always be accurate.
Performance Monitoring only supports the main process in multi-process Android apps.
Next steps
Review and run the Performance Monitoring Android code sample on GitHub.
Learn more about data automatically collected by Performance Monitoring:
- Data related to your app's lifecycle, like app start time
- Data for screen rendering in your app
- Data for HTTP/S network requests issued by your app
View, track, and filter your performance data in the Firebase console.
Add monitoring for specific tasks or workflows in your app by instrumenting custom code traces.