세션 리플레이 Android 미들웨어

이 문서에서는 Android SDK 미들웨어를 사용하여 세션 리플레이를 설치하는 방법을 설명합니다. 앱이 이미 (유지 관리) Amplitude SDK를 사용하는 경우, 이 옵션을 사용하십시오.

앱에서 이미 (최신) Amplitude Android SDK를 사용하고 있는 경우, 세션 리플레이 Android SDK 플러그인을 사용하십시오.

제품 내 분석을 위해 Amplitude 이외의 공급자를 사용하는 경우, 독립형 구현을 선택하십시오.

시작하기 전에

세션 리플레이 미들웨어의 요구사항은 다음과 같습니다.

1. 애플리케이션은 Android를 대상으로 합니다.
2. (유지 보수) Amplitude Android SDK 버전 2.40.1 이상을 사용해야 합니다.
3. SDK에 장치 ID를 제공할 수 있습니다.

Supported Android versions

Session replay supports down to Android 5.0 with a minimum SDK of 21 minSdk = 21. This should support over 99.6% of global Android devices according to Google's distribution data in Android Studio.

빠른 시작

최신 버전의 세션 리플레이 미들웨어를 프로젝트 종속성에 추가하십시오.

// Install latest version from Maven Central
implementation("com.amplitude:middleware-session-replay-android:0.26.1")
// You will also need the (maintenance) Amplitude Analytics SDK if it's not already installed
implementation("com.amplitude:android-sdk:[2.40.1,3.0.0)")

애플리케이션 코드를 구성합니다.

import com.amplitude.api.Amplitude
import com.amplitude.api.SessionReplayMiddleware
// Initialize (maintenance) Amplitude Analytics SDK instance
val amplitude = Amplitude.getInstance()
    .initialize(this, AMPLITUDE_API_KEY)
    // Replay events will be flushed on close as well
    // If setFlushEventsOnClose(false) you must call flush() manually
    .setFlushEventsOnClose(true)
// Create Session Replay Middleware
val sessionReplayMiddleware = SessionReplayMiddleware(amplitude, sampleRate = 1.0)
// Add session replay middleware
// Recording will be handled automatically
amplitude.addEventMiddleware(sessionReplayMiddleware)
// Track events
amplitude.logEvent("Setup (maintenance) Amplitude Android SDK with session replay!")
// Send replay events to the server
amplitude.uploadEvents()
// You can also call flush() on the middleware directly to only send replay events
// sessionReplayMiddleware.flush()
// Always flush before app exit (onPause)
// override fun Activity.onPause() { sessionReplayMiddleware.flush() }

구성

세션 리플레이 미들웨어를 초기화할 때 다음 옵션을 전달하십시오.

Mask on-screen data

The Session Replay SDK offers four ways to mask user input, text, and other view components.

Mask level

Session Replay for Android supports three levels of masking, set through the privacyConfig option with PrivacyConfig(maskLevel = MaskLevel.MEDIUM). The default level is medium.

Use this option in the Session Replay configuration.

Privacy tags in layout XML

Use this option in your application's layout XML.

Privacy methods on the Session Replay SDK

Import the SessionReplay class, then call one of the methods below from your application's code.

import com.amplitude.android.sessionreplay.SessionReplay

Privacy modifiers in Jetpack Compose

For composables, use the privacy modifiers instead of layout XML tags or the SessionReplay methods. These modifiers require version 0.21.0 or higher of the Session Replay Android SDK or plugin.

Import the modifier you need from com.amplitude.android.sessionreplay.compose, then add it to the composable's modifier chain.

import com.amplitude.android.sessionreplay.compose.ampMask
import com.amplitude.android.sessionreplay.compose.ampUnmask
import com.amplitude.android.sessionreplay.compose.ampBlock

// Mask text that Session Replay captures by default
Text(
    text = "Account number: 123456789",
    modifier = Modifier.ampMask(),
)

// Unmask an input field that Session Replay masks by default
TextField(
    value = username,
    onValueChange = { username = it },
    modifier = Modifier.ampUnmask(),
)

// Block a composable and everything it contains
Box(modifier = Modifier.ampBlock()) {
    Text("Session Replay doesn't capture this content")
}

A privacy modifier applies to the composable you add it to and to everything nested inside it. When a nested composable has its own privacy modifier, that modifier takes precedence for that composable and its descendants.

사용자 옵트아웃

세션 리플레이 미들웨어는 Android SDK의 optOut 설정을 따르며 사용자 옵트아웃을 자체적으로 지원하지 않습니다.

import com.amplitude.api.Amplitude
import com.amplitude.api.SessionReplayMiddleware
// Set optOut on the Amplitude SDK
val amplitude = Amplitude.getInstance()
        .initialize(this, AMPLITUDE_API_KEY)
        .setOptOut(true)
amplitude.addEventMiddleware(SessionReplayMiddleware(amplitude, /* session replay options */))

EU data residency

Session Replay is available to Amplitude Customers who use the EU data center. Set the serverZone configuration option to EU during initialization. For example:

import com.amplitude.api.Amplitude
import com.amplitude.api.SessionReplayMiddleware
// Set serverZone on the Amplitude SDK
val amplitude = Amplitude.getInstance()
        .initialize(this, AMPLITUDE_API_KEY)
        .setServerZone(AmplitudeServerZone.EU)
amplitude.addEventMiddleware(SessionReplayMiddleware(amplitude, /* session replay options */))

Sampling rate

By default, Session Replay captures 0% of sessions for replay. Use the sampleRate configuration option to set the percentage of total sessions that Session Replay captures. For example:

To set the sampleRate consider the monthly quota on your Session Replay plan. For example, if your monthly quota is 2,500,000 sessions, and you average 3,000,000 monthly sessions, your quota is 83% of your average sessions. In this case, to ensure sampling lasts through the month, set sampleRate to .83 or lower.

Keep the following in mind as you consider your sample rate:

• When you reach your monthly session quota, Amplitude stops capturing sessions for replay.
• Session quotas reset on the first of every month.
• Use sample rate to distribute your session quota over the course of a month, rather than using your full quota at the beginning of the month.
• To find the best sample rate, Amplitude recommends that you start low, for example .01. If this value doesn't capture enough replays, raise the rate over the course of a few days. For ways to monitor the number of session replays captured, see View the number of captured sessions.
• Replays with processing errors don't count toward your monthly quota. Replays with a retention error message have already been counted against the quota, when the session was still in the retention period.

// This configuration samples 1% of all sessions
amplitude.addEventMiddleware(SessionReplayMiddleware(amplitude, sampleRate = 0.01))

리플레이 수집 비활성화

세션 리플레이가 시작된 후 다음 중 하나가 발생할 때까지 앱에서 실행됩니다.

• 사용자가 앱을 떠납니다.
• sessionReplayMiddleware.stop()을(를) 호출하십시오.

사용자가 앱의 제한된 영역으로 이동하기 전에 호출하여 사용자가 해당 영역에 있는 동안 재생 수집을 비활성화하십시오sessionReplayMiddleware.stop().

사용자가 앱의 제한되지 않은 영역으로 돌아왔을 때 재생 수집을 다시 활성화하려면 sessionReplayMiddleware.start()를 호출하십시오.

특정 화면만 캡처하려면 실행 시 시작되지 않도록 미들웨어를 autoStart = false로 초기화한 다음, 사용자가 해당 화면에 들어오고 나갈 때 start() 및 stop()를 호출하십시오.

// Add the middleware without starting capture
val sessionReplayMiddleware = SessionReplayMiddleware(amplitude, sampleRate = 1.0, autoStart = false)
amplitude.addEventMiddleware(sessionReplayMiddleware)
// Start capture when the user enters a screen you want to record
sessionReplayMiddleware.start()
// Stop capture when the user leaves that screen
sessionReplayMiddleware.stop()

또한 Amplitude 실험과 같은 기능 플래그 제품을 사용하여 위치와 같은 기준에 따라 리플레이 수집을 활성화하거나 비활성화할 수도 있습니다. 예를 들어, 특정 사용자 그룹을 대상으로 하는 기능 플래그를 생성하고 이를 초기화 논리에 추가합니다.

import com.amplitude.api.Amplitude
import com.amplitude.api.SessionReplayMiddleware
// Your existing initialization logic with Android SDK
val amplitude = Amplitude.getInstance().initialize(this, AMPLITUDE_API_KEY)
if (nonEUCountryFlagEnabled) {
  // Create and Install Session Replay Middleware
  val sessionReplayMiddleware = SessionReplayMiddleware(amplitude, sampleRate = 0.5)
  amplitude.addEventMiddleware(sessionReplayMiddleware)
}

WebView and MapView support (Beta)

By default, Session Replay blocks web views and map views in a capture. To enable capture of these components, use the settings described in Mask on-screen data.

Web view session replay injects JavaScript into the rendered page. To enable this, the SDK sets javaScriptEnabled to true on the unmasked web view.

Log Recording

Session Replay supports recording logs in Android applications. To enable log recording, send log messages through the recordLog(level, message, timestamp) API and configure the limits through recordLogOptions parameter while initializing Session Replay.

import com.amplitude.android.plugins.SessionReplayPlugin
import com.amplitude.android.sessionreplay.config.RecordLogLevel
import com.amplitude.android.sessionreplay.config.RecordLogOptions

val sessionReplayPlugin = SessionReplayPlugin(
    recordLogOptions = RecordLogOptions(
        logCountThreshold = 2000,
        maxMessageLength = 4000
    )
)
amplitude.add(sessionReplayPlugin)

sessionReplayPlugin.recordLog(RecordLogLevel.Error, "This is an error log")

// You can also create custom log levels
sessionReplayPlugin.recordLog(RecordLogLevel("debug"), "This is a debug log")

Session Replay supports predefined log levels (Error, Warn, Log) and custom log levels. Create custom log levels by passing any string value to RecordLogLevel(...).

If you have implemented a log system, you can make single-point modifications to integrate log recording functionality. See the following examples for more information.

Timber

If you use Timber, you can integrate it with a custom tree.

import com.amplitude.android.plugins.SessionReplayPlugin
import com.amplitude.android.sessionreplay.config.RecordLogLevel
import timber.log.Timber

class AmplitudeLogRecordTree(private val plugin: SessionReplayPlugin) : Timber.Tree() {
    override fun log(priority: Int, tag: String?, message: String, t: Throwable?) {
        val recordLevel = when (priority) {
            android.util.Log.ERROR -> RecordLogLevel.Error
            android.util.Log.WARN -> RecordLogLevel.Warn
            android.util.Log.INFO -> RecordLogLevel.Log
            android.util.Log.DEBUG -> RecordLogLevel("debug")
            android.util.Log.VERBOSE -> RecordLogLevel("verbose")
            else -> return
        }
        plugin.recordLog(recordLevel, message)
    }
}

val sessionReplayPlugin = SessionReplayPlugin()
amplitude.add(sessionReplayPlugin)

Timber.plant(AmplitudeLogRecordTree(sessionReplayPlugin))

Data retention, deletion, and privacy

Session replay uses existing Amplitude tools and APIs to handle privacy and deletion requests. <!--vale off-->

Retention period

If your Amplitude plan includes Session Replay, Amplitude retains raw replay data for 30 days from the date of ingestion.

If you purchase extra session volume, Amplitude retains raw replay data for 90 days from the date of ingestion. If you need a more strict policy, contact Amplitude support to set the value to 30 days.

Changes to the retention period impact replays ingested after the change. Sessions captured and ingested before a retention period change retain the previous retention period.

Retention periods are set at the organization level. Replays that are outside of the retention period aren't viewable in Amplitude.

DSAR API

The Amplitude DSAR API returns metadata about session replays, but not the raw replay data. All events that are part of a session replay include a [Amplitude] Session Replay ID event property. This event provides information about the sessions collected for replay for the user, and includes all metadata collected with each event.

{
  "amplitude_id": 123456789,
  "app": 12345,
  "event_time": "2020-02-15 01:00:00.123456",
  "event_type": "first_event",
  "server_upload_time": "2020-02-18 01:00:00.234567",
  "device_id": "your device id",
  "user_properties": { ... }
  "event_properties": {
    "[Amplitude] Session Replay ID": "cb6ade06-cbdf-4e0c-8156-32c2863379d6/1699922971244"
  }
  "session_id": 1699922971244,
}

Data deletion

Session Replay uses Amplitude's User Privacy API to handle deletion requests. Successful deletion requests remove all session replays for the specified user.

When you delete the Amplitude project on which you use Session Replay, Amplitude deletes that replay data.

Bot filter

Session Replay uses the same block filter available in the Amplitude app. Session Replay doesn't block traffic based on event or user properties.

Session Replay storage

If a user opts out of tracking in your app, use the optOut configuration option to disable replay collection for that user.

The SDK stores replay data locally. It retries transient upload failures, subject to retry and storage limits.

Amplitude는 각 앱 종료 시 세션 데이터를 서버로 전송하도록 Amplitude SDK 구성(기본값)에서 amplitude.setFlushEventsOnClose(true)를 설정할 것을 권장합니다.

Jetpack Compose Support (Alpha)

Session Replay supports Jetpack Compose for Android applications. This feature is currently in Alpha. To use Jetpack Compose with Session Replay, ensure you use version 0.20.4 or higher of the Session Replay Android SDK or plugin.

To control what Session Replay captures in a composable, use the privacy modifiers in Jetpack Compose. Masking support for Compose requires 0.21.0 or higher.

Known limitations

Keep the following limitations in mind as you implement Session Replay:

• Session Replay doesn't stitch together replays from a single user across multiple projects. For example:

  • You instrument multiple apps as separate Amplitude projects with Session Replay enabled in each.
  • A known user begins on one app, and then switch to another.
  • Amplitude captures both sessions.
  • The replay for each session is available for view in the corresponding host project.

• The User Sessions chart doesn't show session replays if your organization uses a custom session definition.

• Session Replay can't capture the following Android views:

  • Canvas Views