diff --git a/snippets/.gitignore b/snippets/.gitignore new file mode 100644 index 00000000..aa724b77 --- /dev/null +++ b/snippets/.gitignore @@ -0,0 +1,15 @@ +*.iml +.gradle +/local.properties +/.idea/caches +/.idea/libraries +/.idea/modules.xml +/.idea/workspace.xml +/.idea/navEditor.xml +/.idea/assetWizardSettings.xml +.DS_Store +/build +/captures +.externalNativeBuild +.cxx +local.properties diff --git a/snippets/build.gradle.kts b/snippets/build.gradle.kts new file mode 100644 index 00000000..43d2c39e --- /dev/null +++ b/snippets/build.gradle.kts @@ -0,0 +1,61 @@ +/* + * Copyright 2026 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * https://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +plugins { + alias(libs.plugins.android.application) + alias(libs.plugins.kotlin.android) + alias(libs.plugins.compose.compiler) +} + +kotlin { + jvmToolchain(17) +} + +android { + namespace = "com.example.android.performance" + compileSdk = libs.versions.compileSdk.get().toInt() + + defaultConfig { + applicationId = "com.example.android.performance" + minSdk = libs.versions.minSdk.get().toInt() + targetSdk = libs.versions.targetSdk.get().toInt() + versionCode = 1 + versionName = "1.0" + testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner" + } + + compileOptions { + sourceCompatibility = JavaVersion.VERSION_17 + targetCompatibility = JavaVersion.VERSION_17 + } + + buildFeatures { + compose = true + } +} + +dependencies { + val composeBom = platform(libs.androidx.compose.bom) + implementation(composeBom) + implementation(libs.androidx.compose.runtime) + implementation(libs.androidx.activity.compose) + implementation(libs.androidx.lifecycle.runtime.ktx) + + androidTestImplementation(libs.androidx.benchmark.macro.junit4) + androidTestImplementation(libs.androidx.test.ext.junit) + androidTestImplementation(libs.androidx.test.runner) + androidTestImplementation(libs.androidx.uiautomator) +} diff --git a/snippets/gradle.properties b/snippets/gradle.properties new file mode 100644 index 00000000..e8be5cc3 --- /dev/null +++ b/snippets/gradle.properties @@ -0,0 +1,17 @@ +# Copyright 2026 The Android Open Source Project +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8 +android.useAndroidX=true +kotlin.code.style=official diff --git a/snippets/gradle/libs.versions.toml b/snippets/gradle/libs.versions.toml new file mode 100644 index 00000000..2e74dd06 --- /dev/null +++ b/snippets/gradle/libs.versions.toml @@ -0,0 +1,42 @@ +# Copyright 2026 The Android Open Source Project +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# https://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +[versions] +agp = "8.13.1" +activity = "1.11.0" +benchmark = "1.4.1" +compileSdk = "36" +composeBom = "2025.11.00" +junit = "1.3.0" +kotlin = "2.2.21" +lifecycle = "2.9.4" +minSdk = "24" +targetSdk = "36" +testRunner = "1.7.0" +uiAutomator = "2.4.0-alpha06" + +[libraries] +androidx-activity-compose = { group = "androidx.activity", name = "activity-compose", version.ref = "activity" } +androidx-benchmark-macro-junit4 = { group = "androidx.benchmark", name = "benchmark-macro-junit4", version.ref = "benchmark" } +androidx-compose-bom = { group = "androidx.compose", name = "compose-bom", version.ref = "composeBom" } +androidx-compose-runtime = { group = "androidx.compose.runtime", name = "runtime" } +androidx-lifecycle-runtime-ktx = { group = "androidx.lifecycle", name = "lifecycle-runtime-ktx", version.ref = "lifecycle" } +androidx-test-ext-junit = { group = "androidx.test.ext", name = "junit", version.ref = "junit" } +androidx-test-runner = { group = "androidx.test", name = "runner", version.ref = "testRunner" } +androidx-uiautomator = { group = "androidx.test.uiautomator", name = "uiautomator", version.ref = "uiAutomator" } + +[plugins] +android-application = { id = "com.android.application", version.ref = "agp" } +compose-compiler = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "kotlin" } +kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" } diff --git a/snippets/gradle/wrapper/gradle-wrapper.jar b/snippets/gradle/wrapper/gradle-wrapper.jar new file mode 100644 index 00000000..9bbc975c Binary files /dev/null and b/snippets/gradle/wrapper/gradle-wrapper.jar differ diff --git a/snippets/gradle/wrapper/gradle-wrapper.properties b/snippets/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 00000000..d4081da4 --- /dev/null +++ b/snippets/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,7 @@ +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.3-bin.zip +networkTimeout=10000 +validateDistributionUrl=true +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists diff --git a/snippets/gradlew b/snippets/gradlew new file mode 100755 index 00000000..faf93008 --- /dev/null +++ b/snippets/gradlew @@ -0,0 +1,251 @@ +#!/bin/sh + +# +# Copyright © 2015-2021 the original authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# https://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +# +# SPDX-License-Identifier: Apache-2.0 +# + +############################################################################## +# +# Gradle start up script for POSIX generated by Gradle. +# +# Important for running: +# +# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is +# noncompliant, but you have some other compliant shell such as ksh or +# bash, then to run this script, type that shell name before the whole +# command line, like: +# +# ksh Gradle +# +# Busybox and similar reduced shells will NOT work, because this script +# requires all of these POSIX shell features: +# * functions; +# * expansions «$var», «${var}», «${var:-default}», «${var+SET}», +# «${var#prefix}», «${var%suffix}», and «$( cmd )»; +# * compound commands having a testable exit status, especially «case»; +# * various built-in commands including «command», «set», and «ulimit». +# +# Important for patching: +# +# (2) This script targets any POSIX shell, so it avoids extensions provided +# by Bash, Ksh, etc; in particular arrays are avoided. +# +# The "traditional" practice of packing multiple parameters into a +# space-separated string is a well documented source of bugs and security +# problems, so this is (mostly) avoided, by progressively accumulating +# options in "$@", and eventually passing that to Java. +# +# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, +# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; +# see the in-line comments for details. +# +# There are tweaks for specific operating systems such as AIX, CygWin, +# Darwin, MinGW, and NonStop. +# +# (3) This script is generated from the Groovy template +# https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt +# within the Gradle project. +# +# You can find Gradle at https://github.com/gradle/gradle/. +# +############################################################################## + +# Attempt to set APP_HOME + +# Resolve links: $0 may be a link +app_path=$0 + +# Need this for daisy-chained symlinks. +while + APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path + [ -h "$app_path" ] +do + ls=$( ls -ld "$app_path" ) + link=${ls#*' -> '} + case $link in #( + /*) app_path=$link ;; #( + *) app_path=$APP_HOME$link ;; + esac +done + +# This is normally unused +# shellcheck disable=SC2034 +APP_BASE_NAME=${0##*/} +# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036) +APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD=maximum + +warn () { + echo "$*" +} >&2 + +die () { + echo + echo "$*" + echo + exit 1 +} >&2 + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "$( uname )" in #( + CYGWIN* ) cygwin=true ;; #( + Darwin* ) darwin=true ;; #( + MSYS* | MINGW* ) msys=true ;; #( + NONSTOP* ) nonstop=true ;; +esac + +CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar + + +# Determine the Java command to use to start the JVM. +if [ -n "$JAVA_HOME" ] ; then + if [ -x "$JAVA_HOME/jre/sh/java" ] ; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD=$JAVA_HOME/jre/sh/java + else + JAVACMD=$JAVA_HOME/bin/java + fi + if [ ! -x "$JAVACMD" ] ; then + die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +else + JAVACMD=java + if ! command -v java >/dev/null 2>&1 + then + die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +fi + +# Increase the maximum file descriptors if we can. +if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then + case $MAX_FD in #( + max*) + # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked. + # shellcheck disable=SC2039,SC3045 + MAX_FD=$( ulimit -H -n ) || + warn "Could not query maximum file descriptor limit" + esac + case $MAX_FD in #( + '' | soft) :;; #( + *) + # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked. + # shellcheck disable=SC2039,SC3045 + ulimit -n "$MAX_FD" || + warn "Could not set maximum file descriptor limit to $MAX_FD" + esac +fi + +# Collect all arguments for the java command, stacking in reverse order: +# * args from the command line +# * the main class name +# * -classpath +# * -D...appname settings +# * --module-path (only if needed) +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. + +# For Cygwin or MSYS, switch paths to Windows format before running java +if "$cygwin" || "$msys" ; then + APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) + CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" ) + + JAVACMD=$( cygpath --unix "$JAVACMD" ) + + # Now convert the arguments - kludge to limit ourselves to /bin/sh + for arg do + if + case $arg in #( + -*) false ;; # don't mess with options #( + /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath + [ -e "$t" ] ;; #( + *) false ;; + esac + then + arg=$( cygpath --path --ignore --mixed "$arg" ) + fi + # Roll the args list around exactly as many times as the number of + # args, so each arg winds up back in the position where it started, but + # possibly modified. + # + # NB: a `for` loop captures its iteration list before it begins, so + # changing the positional parameters here affects neither the number of + # iterations, nor the values presented in `arg`. + shift # remove old arg + set -- "$@" "$arg" # push replacement arg + done +fi + + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Collect all arguments for the java command: +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments, +# and any embedded shellness will be escaped. +# * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be +# treated as '${Hostname}' itself on the command line. + +set -- \ + "-Dorg.gradle.appname=$APP_BASE_NAME" \ + -classpath "$CLASSPATH" \ + org.gradle.wrapper.GradleWrapperMain \ + "$@" + +# Stop when "xargs" is not available. +if ! command -v xargs >/dev/null 2>&1 +then + die "xargs is not available" +fi + +# Use "xargs" to parse quoted args. +# +# With -n1 it outputs one arg per line, with the quotes and backslashes removed. +# +# In Bash we could simply go: +# +# readarray ARGS < <( xargs -n1 <<<"$var" ) && +# set -- "${ARGS[@]}" "$@" +# +# but POSIX shell has neither arrays nor command substitution, so instead we +# post-process each arg (as a line of input to sed) to backslash-escape any +# character that might be a shell metacharacter, then use eval to reverse +# that process (while maintaining the separation between arguments), and wrap +# the whole thing up as a single "set" statement. +# +# This will of course break if any of these variables contains a newline or +# an unmatched quote. +# + +eval "set -- $( + printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | + xargs -n1 | + sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | + tr '\n' ' ' + )" '"$@"' + +exec "$JAVACMD" "$@" diff --git a/snippets/gradlew.bat b/snippets/gradlew.bat new file mode 100644 index 00000000..9b42019c --- /dev/null +++ b/snippets/gradlew.bat @@ -0,0 +1,94 @@ +@rem +@rem Copyright 2015 the original author or authors. +@rem +@rem Licensed under the Apache License, Version 2.0 (the "License"); +@rem you may not use this file except in compliance with the License. +@rem You may obtain a copy of the License at +@rem +@rem https://www.apache.org/licenses/LICENSE-2.0 +@rem +@rem Unless required by applicable law or agreed to in writing, software +@rem distributed under the License is distributed on an "AS IS" BASIS, +@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@rem See the License for the specific language governing permissions and +@rem limitations under the License. +@rem +@rem SPDX-License-Identifier: Apache-2.0 +@rem + +@if "%DEBUG%"=="" @echo off +@rem ########################################################################## +@rem +@rem Gradle startup script for Windows +@rem +@rem ########################################################################## + +@rem Set local scope for the variables with windows NT shell +if "%OS%"=="Windows_NT" setlocal + +set DIRNAME=%~dp0 +if "%DIRNAME%"=="" set DIRNAME=. +@rem This is normally unused +set APP_BASE_NAME=%~n0 +set APP_HOME=%DIRNAME% + +@rem Resolve any "." and ".." in APP_HOME to make it shorter. +for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi + +@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" + +@rem Find java.exe +if defined JAVA_HOME goto findJavaFromJavaHome + +set JAVA_EXE=java.exe +%JAVA_EXE% -version >NUL 2>&1 +if %ERRORLEVEL% equ 0 goto execute + +echo. 1>&2 +echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2 +echo. 1>&2 +echo Please set the JAVA_HOME variable in your environment to match the 1>&2 +echo location of your Java installation. 1>&2 + +goto fail + +:findJavaFromJavaHome +set JAVA_HOME=%JAVA_HOME:"=% +set JAVA_EXE=%JAVA_HOME%/bin/java.exe + +if exist "%JAVA_EXE%" goto execute + +echo. 1>&2 +echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2 +echo. 1>&2 +echo Please set the JAVA_HOME variable in your environment to match the 1>&2 +echo location of your Java installation. 1>&2 + +goto fail + +:execute +@rem Setup the command line + +set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar + + +@rem Execute Gradle +"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %* + +:end +@rem End local scope for the variables with windows NT shell +if %ERRORLEVEL% equ 0 goto mainEnd + +:fail +rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of +rem the _cmd.exe /c_ return code! +set EXIT_CODE=%ERRORLEVEL% +if %EXIT_CODE% equ 0 set EXIT_CODE=1 +if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE% +exit /b %EXIT_CODE% + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/snippets/settings.gradle.kts b/snippets/settings.gradle.kts new file mode 100644 index 00000000..a9bc7170 --- /dev/null +++ b/snippets/settings.gradle.kts @@ -0,0 +1,33 @@ +/* + * Copyright 2026 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * https://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +pluginManagement { + repositories { + google() + mavenCentral() + gradlePluginPortal() + } +} + +dependencyResolutionManagement { + repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS) + repositories { + google() + mavenCentral() + } +} + +rootProject.name = "snippets" diff --git a/snippets/src/androidTest/java/com/example/android/performance/baselineprofiles/BaselineProfilesOverview.kt b/snippets/src/androidTest/java/com/example/android/performance/baselineprofiles/BaselineProfilesOverview.kt new file mode 100644 index 00000000..b713319e --- /dev/null +++ b/snippets/src/androidTest/java/com/example/android/performance/baselineprofiles/BaselineProfilesOverview.kt @@ -0,0 +1,51 @@ +/* + * Copyright 2026 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * https://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package com.example.android.performance.baselineprofiles + +import androidx.benchmark.macro.junit4.BaselineProfileRule +import androidx.test.uiautomator.Direction +import androidx.test.uiautomator.textAsString +import androidx.test.uiautomator.uiAutomator +import org.junit.Rule +import org.junit.Test + +private const val PACKAGE_NAME = "com.example.snippets" + +// [START android_performance_baselineprofiles_overview_generator] +class BaselineProfileGenerator { + @get:Rule + val baselineProfileRule = BaselineProfileRule() + + @Test + fun appStartupAndUserJourneys() { + baselineProfileRule.collect(packageName = PACKAGE_NAME) { + uiAutomator { + // App startup journey. + startApp(PACKAGE_NAME) + + // Find and click elements using the new DSL + onElement { textAsString() == "COMPOSE LAZYLIST" }.click() + onElement { viewIdResourceName == "myLazyColumn" }.also { + it.fling(Direction.DOWN) + it.fling(Direction.UP) + } + pressBack() + } + } + } +} +// [END android_performance_baselineprofiles_overview_generator] diff --git a/snippets/src/androidTest/java/com/example/android/performance/baselineprofiles/MeasureBaselineProfile.kt b/snippets/src/androidTest/java/com/example/android/performance/baselineprofiles/MeasureBaselineProfile.kt new file mode 100644 index 00000000..e16c87f4 --- /dev/null +++ b/snippets/src/androidTest/java/com/example/android/performance/baselineprofiles/MeasureBaselineProfile.kt @@ -0,0 +1,80 @@ +/* + * Copyright 2026 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * https://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package com.example.android.performance.baselineprofiles + +import androidx.benchmark.macro.BaselineProfileMode +import androidx.benchmark.macro.CompilationMode +import androidx.benchmark.macro.StartupMode +import androidx.benchmark.macro.StartupTimingMetric +import androidx.benchmark.macro.junit4.MacrobenchmarkRule +import androidx.test.ext.junit.runners.AndroidJUnit4 +import androidx.test.uiautomator.uiAutomator +import org.junit.Rule +import org.junit.Test +import org.junit.runner.RunWith + +// [START android_performance_baselineprofiles_measure_compilation_modes] +@RunWith(AndroidJUnit4::class) +class ColdStartupBenchmark { + @get:Rule + val benchmarkRule = MacrobenchmarkRule() + + // No ahead-of-time (AOT) compilation at all. Represents performance of a + // fresh install on a user's device if you don't enable Baseline Profiles— + // generally the worst case performance. + @Test + fun startupNoCompilation() = startup(CompilationMode.None()) + + // Partial pre-compilation with Baseline Profiles. Represents performance of + // a fresh install on a user's device. + @Test + fun startupPartialWithBaselineProfiles() = + startup(CompilationMode.Partial(baselineProfileMode = BaselineProfileMode.Require)) + + // Partial pre-compilation with some just-in-time (JIT) compilation. + // Represents performance after some app usage. + @Test + fun startupPartialCompilation() = startup( + CompilationMode.Partial( + baselineProfileMode = BaselineProfileMode.Disable, + warmupIterations = 3 + ) + ) + + // Full pre-compilation. Generally not representative of real user + // experience, but can yield more stable performance metrics by removing + // noise from JIT compilation within benchmark runs. + @Test + fun startupFullCompilation() = startup(CompilationMode.Full()) + + private fun startup(compilationMode: CompilationMode) = benchmarkRule.measureRepeated( + packageName = "com.example.macrobenchmark.target", + metrics = listOf(StartupTimingMetric()), + compilationMode = compilationMode, + iterations = 10, + startupMode = StartupMode.COLD, + setupBlock = { + pressHome() + } + ) { + uiAutomator { + startApp(packageName) + onElement(5_000) { viewIdResourceName == "my-content" } + } + } +} +// [END android_performance_baselineprofiles_measure_compilation_modes] diff --git a/snippets/src/androidTest/java/com/example/android/performance/startupprofiles/DexLayoutOptimizations.kt b/snippets/src/androidTest/java/com/example/android/performance/startupprofiles/DexLayoutOptimizations.kt new file mode 100644 index 00000000..740ad300 --- /dev/null +++ b/snippets/src/androidTest/java/com/example/android/performance/startupprofiles/DexLayoutOptimizations.kt @@ -0,0 +1,54 @@ +/* + * Copyright 2026 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * https://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package com.example.android.performance.startupprofiles + +import android.content.Intent +import androidx.benchmark.macro.junit4.BaselineProfileRule +import androidx.test.ext.junit.runners.AndroidJUnit4 +import androidx.test.filters.LargeTest +import androidx.test.uiautomator.uiAutomator +import org.junit.Rule +import org.junit.Test +import org.junit.runner.RunWith + +// [START android_performance_startupprofiles_generator] +@RunWith(AndroidJUnit4::class) +@LargeTest +class BaselineProfileGenerator { + + @get:Rule + val rule = BaselineProfileRule() + + @Test + fun generate() { + rule.collect( + packageName = "com.example.app", + includeInStartupProfile = true + ) { + uiAutomator { + // Launch directly into the NEWS_FEED using startActivityIntent + startIntent( + Intent().apply { + setPackage(packageName) + setAction("com.example.app.NEWS_FEED") + } + ) + } + } + } +} +// [END android_performance_startupprofiles_generator] diff --git a/snippets/src/main/AndroidManifest.xml b/snippets/src/main/AndroidManifest.xml new file mode 100644 index 00000000..c9a15e47 --- /dev/null +++ b/snippets/src/main/AndroidManifest.xml @@ -0,0 +1,30 @@ + + + + + + + + + + + + + + diff --git a/snippets/src/main/java/com/example/android/performance/appstartup/AnalysisOptimization.kt b/snippets/src/main/java/com/example/android/performance/appstartup/AnalysisOptimization.kt new file mode 100644 index 00000000..d8512477 --- /dev/null +++ b/snippets/src/main/java/com/example/android/performance/appstartup/AnalysisOptimization.kt @@ -0,0 +1,71 @@ +/* + * Copyright 2026 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * https://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package com.example.android.performance.appstartup + +import android.app.Application +import android.os.StrictMode +import androidx.compose.runtime.Composable +import androidx.compose.runtime.LaunchedEffect +import androidx.compose.runtime.getValue +import androidx.compose.runtime.mutableStateOf +import androidx.compose.runtime.remember +import androidx.compose.runtime.setValue + +// [START android_performance_appstartup_strict_mode] +class MyApplication : Application() { + + override fun onCreate() { + super.onCreate() + + // ... + if (BuildConfig.DEBUG) { + StrictMode.setThreadPolicy( + StrictMode.ThreadPolicy.Builder() + .detectAll() + .penaltyDeath() + .build() + ) + } + // ... + } +} +// [END android_performance_appstartup_strict_mode] + +@Composable +private fun ConditionalCompositionSnippet() { + // [START android_compose_performance_conditional_composition] + var shouldLoad by remember { mutableStateOf(false) } + + if (shouldLoad) { + MyComposable() + } + // [END android_compose_performance_conditional_composition] + + // [START android_compose_performance_conditional_composition_effect] + LaunchedEffect(Unit) { + shouldLoad = true + } + // [END android_compose_performance_conditional_composition_effect] +} + +@Composable +private fun MyComposable() { +} + +private object BuildConfig { + const val DEBUG = true +} diff --git a/snippets/src/main/java/com/example/android/performance/vitals/LaunchTime.kt b/snippets/src/main/java/com/example/android/performance/vitals/LaunchTime.kt new file mode 100644 index 00000000..916f7c02 --- /dev/null +++ b/snippets/src/main/java/com/example/android/performance/vitals/LaunchTime.kt @@ -0,0 +1,80 @@ +/* + * Copyright 2026 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * https://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package com.example.android.performance.vitals + +import android.os.Bundle +import androidx.activity.ComponentActivity +import androidx.activity.compose.setContent +import androidx.compose.runtime.Composable +import androidx.compose.runtime.SideEffect +import androidx.compose.runtime.getValue +import androidx.compose.runtime.mutableStateOf +import androidx.compose.runtime.remember +import androidx.compose.runtime.setValue +import androidx.lifecycle.lifecycleScope +import kotlinx.coroutines.Dispatchers +import kotlinx.coroutines.launch + +// [START android_performance_launch_time_fully_drawn_reporter] +class MainActivity : ComponentActivity() { + + sealed interface ActivityState { + data object LOADING : ActivityState + data object LOADED : ActivityState + } + + override fun onCreate(savedInstanceState: Bundle?) { + super.onCreate(savedInstanceState) + + setContent { + var activityState by remember { + mutableStateOf(ActivityState.LOADING as ActivityState) + } + fullyDrawnReporter.addOnReportDrawnListener { + activityState = ActivityState.LOADED + } + ReportFullyDrawnTheme { + when (activityState) { + is ActivityState.LOADING -> { + // Display the loading UI. + } + is ActivityState.LOADED -> { + // Display the full UI. + } + } + } + SideEffect { + fullyDrawnReporter.addReporter() + lifecycleScope.launch(Dispatchers.IO) { + // Perform the background operation. + fullyDrawnReporter.removeReporter() + } + fullyDrawnReporter.addReporter() + lifecycleScope.launch(Dispatchers.IO) { + // Perform the background operation. + fullyDrawnReporter.removeReporter() + } + } + } + } +} +// [END android_performance_launch_time_fully_drawn_reporter] + +@Composable +private fun ReportFullyDrawnTheme(content: @Composable () -> Unit) { + content() +}