Release diagnostics (#34474)

Skip diagnostics on release mode, add test in firebase testlab

.cirrus.yml

@@ -110,7 +110,11 @@ task:
       container:
         cpu: 4
         memory: 12G
-
+    - name: release_smoke_tests
+      env:
+        CLOUDSDK_CORE_DISABLE_PROMPTS: 1
+        GCLOUD_FIREBASE_TESTLAB_KEY: ENCRYPTED[1c140257edc48f5578fa5a0e5038b84c8e53270c405efa5a8e35ea303a4e0d135853989f448f72136206de854d17fbec]
+      test_script: ./dev/bots/firebase_testlab.sh
 
 task:
   use_compute_credits: $CIRRUS_USER_COLLABORATOR == 'true' && $CIRRUS_PR == ''

dev/bots/firebase_testlab.sh

+#!/bin/bash
+
+set -e
+
+GIT_REVISION=$(git rev-parse HEAD)
+
+pushd dev/integration_tests/release_smoke_test
+
+../../../bin/flutter build appbundle --target-platform android-arm,android-arm64
+
+echo $GCLOUD_FIREBASE_TESTLAB_KEY > ${HOME}/gcloud-service-key.json
+gcloud auth activate-service-account --key-file=${HOME}/gcloud-service-key.json
+gcloud --quiet config set project flutter-infra
+
+# Run the test.
+gcloud firebase test android run --type robo \
+  --app build/app/outputs/bundle/release/app.aab \
+  --timeout 2m \
+  --results-bucket=gs://flutter_firebase_testlab \
+  --results-dir=release_smoke_test/$GIT_REVISION/$CIRRUS_BUILD_ID
+
+# Check logcat for "E/flutter" - if it's there, something's wrong.
+gsutil cp gs://flutter_firebase_testlab/release_smoke_test/$GIT_REVISION/$CIRRUS_BUILD_ID/walleye-26-en-portrait/logcat /tmp/logcat
+! grep "E/flutter" /tmp/logcat || false
+grep "I/flutter" /tmp/logcat
+
+popd

dev/ci/docker_linux/Dockerfile

@@ -23,6 +23,7 @@ RUN apt-get install -y --no-install-recommends \
   curl \
   zip \
   unzip \
+  apt-transport-https \
   ca-certificates \
   gnupg
 
@@ -30,6 +31,17 @@ RUN apt-get install -y --no-install-recommends \
 RUN wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add -
 RUN echo 'deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main' | tee /etc/apt/sources.list.d/google-chrome.list
 
+# Add repo for gcloud sdk and install it
+RUN echo "deb [signed-by=/usr/share/keyrings/cloud.google.gpg] https://packages.cloud.google.com/apt cloud-sdk main" | \
+    tee -a /etc/apt/sources.list.d/google-cloud-sdk.list
+
+RUN curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | \
+    apt-key --keyring /usr/share/keyrings/cloud.google.gpg add -
+
+RUN apt-get update && apt-get install -y google-cloud-sdk && \
+    gcloud config set core/disable_usage_reporting true && \
+    gcloud config set component_manager/disable_update_check true
+
 # Add nodejs repository to apt sources and install it.
 ENV NODEJS_INSTALL="/opt/nodejs_install"
 RUN mkdir -p "${NODEJS_INSTALL}"

dev/integration_tests/release_smoke_test/.gitignore

+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+.dart_tool/
+.flutter-plugins
+.packages
+.pub-cache/
+.pub/
+/build/
+
+# Android related
+**/android/**/gradle-wrapper.jar
+**/android/.gradle
+**/android/captures/
+**/android/gradlew
+**/android/gradlew.bat
+**/android/local.properties
+**/android/**/GeneratedPluginRegistrant.java
+
+# iOS/XCode related
+**/ios/**/*.mode1v3
+**/ios/**/*.mode2v3
+**/ios/**/*.moved-aside
+**/ios/**/*.pbxuser
+**/ios/**/*.perspectivev3
+**/ios/**/*sync/
+**/ios/**/.sconsign.dblite
+**/ios/**/.tags*
+**/ios/**/.vagrant/
+**/ios/**/DerivedData/
+**/ios/**/Icon?
+**/ios/**/Pods/
+**/ios/**/.symlinks/
+**/ios/**/profile
+**/ios/**/xcuserdata
+**/ios/.generated/
+**/ios/Flutter/App.framework
+**/ios/Flutter/Flutter.framework
+**/ios/Flutter/Generated.xcconfig
+**/ios/Flutter/app.flx
+**/ios/Flutter/app.zip
+**/ios/Flutter/flutter_assets/
+**/ios/ServiceDefinitions.json
+**/ios/Runner/GeneratedPluginRegistrant.*
+
+# Exceptions to above rules.
+!**/ios/**/default.mode1v3
+!**/ios/**/default.mode2v3
+!**/ios/**/default.pbxuser
+!**/ios/**/default.perspectivev3
+!/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages

dev/integration_tests/release_smoke_test/.metadata

+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: fc5ace684d562531a03cfb6afc98014084faabf2
+  channel: release_diagnostics
+
+project_type: app

dev/integration_tests/release_smoke_test/README.md

+# release_smoke_test
+
+A simple Flutter project used in CI to test that a release app can build and
+run on a physical device.

dev/integration_tests/release_smoke_test/android/app/build.gradle

+def localProperties = new Properties()
+def localPropertiesFile = rootProject.file('local.properties')
+if (localPropertiesFile.exists()) {
+    localPropertiesFile.withReader('UTF-8') { reader ->
+        localProperties.load(reader)
+    }
+}
+
+def flutterRoot = localProperties.getProperty('flutter.sdk')
+if (flutterRoot == null) {
+    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
+}
+
+def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
+if (flutterVersionCode == null) {
+    flutterVersionCode = '1'
+}
+
+def flutterVersionName = localProperties.getProperty('flutter.versionName')
+if (flutterVersionName == null) {
+    flutterVersionName = '1.0'
+}
+
+apply plugin: 'com.android.application'
+apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
+
+android {
+    compileSdkVersion 28
+
+    lintOptions {
+        disable 'InvalidPackage'
+    }
+
+    defaultConfig {
+        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
+        applicationId "com.example.release_smoke_test"
+        minSdkVersion 16
+        targetSdkVersion 28
+        versionCode flutterVersionCode.toInteger()
+        versionName flutterVersionName
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            // TODO: Add your own signing config for the release build.
+            // Signing with the debug keys for now, so `flutter run --release` works.
+            signingConfig signingConfigs.debug
+        }
+    }
+}
+
+flutter {
+    source '../..'
+}
+
+dependencies {
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'com.android.support.test:runner:1.0.2'
+    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+}

dev/integration_tests/release_smoke_test/android/app/src/debug/AndroidManifest.xml

+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.release_smoke_test">
+    <!-- Flutter needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>

dev/integration_tests/release_smoke_test/android/app/src/main/AndroidManifest.xml

+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.release_smoke_test">
+
+    <!-- io.flutter.app.FlutterApplication is an android.app.Application that
+         calls FlutterMain.startInitialization(this); in its onCreate method.
+         In most cases you can leave this as-is, but you if you want to provide
+         additional functionality it is fine to subclass or reimplement
+         FlutterApplication and put your custom class here. -->
+    <application
+        android:name="io.flutter.app.FlutterApplication"
+        android:label="release_smoke_test"
+        android:icon="@mipmap/ic_launcher">
+        <activity
+            android:name=".MainActivity"
+            android:launchMode="singleTop"
+            android:theme="@style/LaunchTheme"
+            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
+            android:hardwareAccelerated="true"
+            android:windowSoftInputMode="adjustResize">
+            <!-- This keeps the window background of the activity showing
+                 until Flutter renders its first frame. It can be removed if
+                 there is no splash screen (such as the default splash screen
+                 defined in @style/LaunchTheme). -->
+            <meta-data
+                android:name="io.flutter.app.android.SplashScreenUntilFirstFrame"
+                android:value="true" />
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+    </application>
+</manifest>

dev/integration_tests/release_smoke_test/android/app/src/main/java/com/example/release_smoke_test/MainActivity.java

+package com.example.release_smoke_test;
+
+import android.os.Bundle;
+import io.flutter.app.FlutterActivity;
+import io.flutter.plugins.GeneratedPluginRegistrant;
+
+public class MainActivity extends FlutterActivity {
+  @Override
+  protected void onCreate(Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+    GeneratedPluginRegistrant.registerWith(this);
+  }
+}

dev/integration_tests/release_smoke_test/android/app/src/main/res/drawable/launch_background.xml

+<?xml version="1.0" encoding="utf-8"?>
+<!-- Modify this file to customize your launch splash screen -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@android:color/white" />
+
+    <!-- You can insert your own image assets here -->
+    <!-- <item>
+        <bitmap
+            android:gravity="center"
+            android:src="@mipmap/launch_image" />
+    </item> -->
+</layer-list>

dev/integration_tests/release_smoke_test/android/app/src/main/res/values/styles.xml

+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
+        <!-- Show a splash screen on the activity. Automatically removed when
+             Flutter draws its first frame -->
+        <item name="android:windowBackground">@drawable/launch_background</item>
+    </style>
+</resources>

dev/integration_tests/release_smoke_test/android/app/src/profile/AndroidManifest.xml

+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.release_smoke_test">
+    <!-- Flutter needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>

dev/integration_tests/release_smoke_test/android/build.gradle

+buildscript {
+    repositories {
+        google()
+        jcenter()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:3.2.1'
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        jcenter()
+    }
+}
+
+rootProject.buildDir = '../build'
+subprojects {
+    project.buildDir = "${rootProject.buildDir}/${project.name}"
+}
+subprojects {
+    project.evaluationDependsOn(':app')
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}

dev/integration_tests/release_smoke_test/android/gradle.properties

+org.gradle.jvmargs=-Xmx1536M
+

dev/integration_tests/release_smoke_test/android/gradle/wrapper/gradle-wrapper.properties

+#Fri Jun 23 08:50:38 CEST 2017
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.2-all.zip

dev/integration_tests/release_smoke_test/android/settings.gradle

+include ':app'
+
+def flutterProjectRoot = rootProject.projectDir.parentFile.toPath()
+
+def plugins = new Properties()
+def pluginsFile = new File(flutterProjectRoot.toFile(), '.flutter-plugins')
+if (pluginsFile.exists()) {
+    pluginsFile.withReader('UTF-8') { reader -> plugins.load(reader) }
+}
+
+plugins.each { name, path ->
+    def pluginDirectory = flutterProjectRoot.resolve(path).resolve('android').toFile()
+    include ":$name"
+    project(":$name").projectDir = pluginDirectory
+}

dev/integration_tests/release_smoke_test/ios/Flutter/AppFrameworkInfo.plist

+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>$(DEVELOPMENT_LANGUAGE)</string>
+  <key>CFBundleExecutable</key>
+  <string>App</string>
+  <key>CFBundleIdentifier</key>
+  <string>io.flutter.flutter.app</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>App</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>1.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>1.0</string>
+  <key>MinimumOSVersion</key>
+  <string>8.0</string>
+</dict>
+</plist>

dev/integration_tests/release_smoke_test/ios/Flutter/Debug.xcconfig

+#include "Generated.xcconfig"

dev/integration_tests/release_smoke_test/ios/Flutter/Release.xcconfig

+#include "Generated.xcconfig"

dev/integration_tests/release_smoke_test/ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata

+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:Runner.xcodeproj">
+   </FileRef>
+</Workspace>

dev/integration_tests/release_smoke_test/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme

+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "0910"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+               BuildableName = "Runner.app"
+               BlueprintName = "Runner"
+               ReferencedContainer = "container:Runner.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <Testables>
+      </Testables>
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Profile"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

dev/integration_tests/release_smoke_test/ios/Runner.xcworkspace/contents.xcworkspacedata

+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:Runner.xcodeproj">
+   </FileRef>
+</Workspace>

dev/integration_tests/release_smoke_test/ios/Runner/AppDelegate.h

+#import <Flutter/Flutter.h>
+#import <UIKit/UIKit.h>
+
+@interface AppDelegate : FlutterAppDelegate
+
+@end

dev/integration_tests/release_smoke_test/ios/Runner/AppDelegate.m

+#include "AppDelegate.h"
+#include "GeneratedPluginRegistrant.h"
+
+@implementation AppDelegate
+
+- (BOOL)application:(UIApplication *)application
+    didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
+  [GeneratedPluginRegistrant registerWithRegistry:self];
+  // Override point for customization after application launch.
+  return [super application:application didFinishLaunchingWithOptions:launchOptions];
+}
+
+@end

dev/integration_tests/release_smoke_test/ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json

+{
+  "images" : [
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-20x20@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-20x20@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-40x40@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-40x40@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-60x60@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-60x60@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-20x20@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-20x20@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-29x29@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-29x29@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-40x40@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-40x40@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-76x76@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-76x76@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "83.5x83.5",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-83.5x83.5@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "1024x1024",
+      "idiom" : "ios-marketing",
+      "filename" : "Icon-App-1024x1024@1x.png",
+      "scale" : "1x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

dev/integration_tests/release_smoke_test/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json

+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage@3x.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

dev/integration_tests/release_smoke_test/ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md

+# Launch Screen Assets
+
+You can customize the launch screen with your own desired assets by replacing the image files in this directory.
+
+You can also do it by opening your Flutter project's Xcode project with `open ios/Runner.xcworkspace`, selecting `Runner/Assets.xcassets` in the Project Navigator and dropping in the desired images.
\ No newline at end of file

dev/integration_tests/release_smoke_test/ios/Runner/Base.lproj/LaunchScreen.storyboard

+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="12121" systemVersion="16G29" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="12089"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="Ydg-fD-yQy"/>
+                        <viewControllerLayoutGuide type="bottom" id="xbc-2k-c8Z"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <imageView opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" image="LaunchImage" translatesAutoresizingMaskIntoConstraints="NO" id="YRO-k0-Ey4">
+                            </imageView>
+                        </subviews>
+                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                        <constraints>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerX" secondItem="Ze5-6b-2t3" secondAttribute="centerX" id="1a2-6s-vTC"/>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerY" secondItem="Ze5-6b-2t3" secondAttribute="centerY" id="4X2-HB-R7a"/>
+                        </constraints>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="53" y="375"/>
+        </scene>
+    </scenes>
+    <resources>
+        <image name="LaunchImage" width="168" height="185"/>
+    </resources>
+</document>

dev/integration_tests/release_smoke_test/ios/Runner/Base.lproj/Main.storyboard

+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="10117" systemVersion="15F34" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="BYZ-38-t0r">
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="10085"/>
+    </dependencies>
+    <scenes>
+        <!--Flutter View Controller-->
+        <scene sceneID="tne-QT-ifu">
+            <objects>
+                <viewController id="BYZ-38-t0r" customClass="FlutterViewController" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="y3c-jy-aDJ"/>
+                        <viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
+                        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
+            </objects>
+        </scene>
+    </scenes>
+</document>

dev/integration_tests/release_smoke_test/ios/Runner/Info.plist

+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>release_smoke_test</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>$(FLUTTER_BUILD_NAME)</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>$(FLUTTER_BUILD_NUMBER)</string>
+	<key>LSRequiresIPhoneOS</key>
+	<true/>
+	<key>UILaunchStoryboardName</key>
+	<string>LaunchScreen</string>
+	<key>UIMainStoryboardFile</key>
+	<string>Main</string>
+	<key>UISupportedInterfaceOrientations</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UISupportedInterfaceOrientations~ipad</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UIViewControllerBasedStatusBarAppearance</key>
+	<false/>
+</dict>
+</plist>

dev/integration_tests/release_smoke_test/ios/Runner/main.m

+#import <Flutter/Flutter.h>
+#import <UIKit/UIKit.h>
+#import "AppDelegate.h"
+
+int main(int argc, char* argv[]) {
+  @autoreleasepool {
+    return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
+  }
+}

dev/integration_tests/release_smoke_test/lib/main.dart

+// Copyright 2019 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'package:flutter/widgets.dart';
+
+void main() {
+  const Text text = Text('Hello, world!', textDirection: TextDirection.ltr);
+  // These calls must not result in an error. They behave differently in
+  // release mode compared to debug or profile.
+  // The test will grep logcat for any errors emitted by Flutter.
+  print(text.toDiagnosticsNode());
+  print(text.toStringDeep());
+  runApp(
+    const Center(
+      child: text,
+    ),
+  );
+}

dev/integration_tests/release_smoke_test/pubspec.yaml

+name: release_smoke_test
+
+environment:
+  # The pub client defaults to an <2.0.0 sdk constraint which we need to explicitly overwrite.
+  sdk: ">=2.0.0-dev.68.0 <3.0.0"
+
+dependencies:
+  flutter:
+    sdk: flutter
+
+  collection: 1.14.11 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  meta: 1.1.6 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  typed_data: 1.1.6 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  vector_math: 2.0.8 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+
+dev_dependencies:
+  flutter_test:
+    sdk: flutter
+
+  async: 2.2.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  boolean_selector: 1.0.4 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  charcode: 1.1.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  matcher: 0.12.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  path: 1.6.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  pedantic: 1.7.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  quiver: 2.0.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  source_span: 1.5.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  stack_trace: 1.9.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  stream_channel: 2.0.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  string_scanner: 1.0.4 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  term_glyph: 1.1.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  test_api: 0.2.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+
+# PUBSPEC CHECKSUM: 235b

packages/flutter/lib/src/foundation/assertions.dart

@@ -5,6 +5,7 @@
 import 'package:meta/meta.dart';
 
 import 'basic_types.dart';
+import 'constants.dart';
 import 'diagnostics.dart';
 import 'print.dart';
 
@@ -331,7 +332,14 @@ class FlutterErrorDetails extends Diagnosticable {
   /// If the exception contains an [ErrorSummary] that summary is used,
   /// otherwise the summary is inferred from the string representation of the
   /// exception.
+  ///
+  /// In release mode, this always returns a [DiagnosticsNode.message] with a
+  /// formatted version of the exception.
   DiagnosticsNode get summary {
+    String formatException() => exceptionAsString().split('\n')[0].trimLeft();
+    if (kReleaseMode) {
+      return DiagnosticsNode.message(formatException());
+    }
     final Diagnosticable diagnosticable = _exceptionToDiagnosticable();
     DiagnosticsNode summary;
     if (diagnosticable != null) {
@@ -339,7 +347,7 @@ class FlutterErrorDetails extends Diagnosticable {
       debugFillProperties(builder);
       summary = builder.properties.firstWhere((DiagnosticsNode node) => node.level == DiagnosticLevel.summary, orElse: () => null);
     }
-    return summary ?? ErrorSummary('${exceptionAsString().split("\n")[0].trimLeft()}');
+    return summary ?? ErrorSummary('${formatException()}');
   }
 
   @override

packages/flutter/lib/src/foundation/diagnostics.dart

@@ -7,6 +7,7 @@ import 'dart:math' as math;
 import 'package:meta/meta.dart';
 
 import 'assertions.dart';
+import 'constants.dart';
 import 'debug.dart';
 
 // Examples can assume:
@@ -89,6 +90,9 @@ enum DiagnosticLevel {
 ///  * [DiagnosticsNode.toStringDeep], which dumps text art trees for these
 ///    styles.
 enum DiagnosticsTreeStyle {
+  /// A style that does not display the tree, for release mode.
+  none,
+
   /// Sparse style for displaying trees.
   ///
   /// See also:
@@ -1107,6 +1111,9 @@ class TextTreeRenderer {
     String prefixOtherLines,
     TextTreeConfiguration parentConfiguration,
   }) {
+    if (kReleaseMode) {
+      return '';
+    }
     final bool isSingleLine = _isSingleLine(node.style) && parentConfiguration?.lineBreakProperties != true;
     prefixOtherLines ??= prefixLineOne;
     if (node.linePrefix != null) {
@@ -1378,11 +1385,14 @@ class TextTreeRenderer {
 
 /// Defines diagnostics data for a [value].
 ///
-/// [DiagnosticsNode] provides a high quality multi-line string dump via
-/// [toStringDeep]. The core members are the [name], [toDescription],
-/// [getProperties], [value], and [getChildren]. All other members exist
-/// typically to provide hints for how [toStringDeep] and debugging tools should
-/// format output.
+/// For debug and profile modes, [DiagnosticsNode] provides a high quality
+/// multi-line string dump via [toStringDeep]. The core members are the [name],
+/// [toDescription], [getProperties], [value], and [getChildren]. All other
+/// members exist typically to provide hints for how [toStringDeep] and
+/// debugging tools should format output.
+///
+/// In release mode, far less information is retained and some information may
+/// not print at all.
 abstract class DiagnosticsNode {
   /// Initializes the object.
   ///
@@ -1459,7 +1469,7 @@ abstract class DiagnosticsNode {
   ///
   /// If `minLevel` is [DiagnosticLevel.hidden] no diagnostics will be filtered.
   /// If `minLevel` is [DiagnosticLevel.off] all diagnostics will be filtered.
-  bool isFiltered(DiagnosticLevel minLevel) => level.index < minLevel.index;
+  bool isFiltered(DiagnosticLevel minLevel) => kReleaseMode ? true : level.index < minLevel.index;
 
   /// Priority level of the diagnostic used to control which diagnostics should
   /// be shown and filtered.
@@ -1470,7 +1480,7 @@ abstract class DiagnosticsNode {
   /// the value returned here but other factors also influence it. For example,
   /// whether an exception is thrown computing a property value
   /// [DiagnosticLevel.error] is returned.
-  DiagnosticLevel get level => DiagnosticLevel.info;
+  DiagnosticLevel get level => kReleaseMode ? DiagnosticLevel.hidden : DiagnosticLevel.info;
 
   /// Whether the name of the property should be shown when showing the default
   /// view of the tree.
@@ -1528,6 +1538,9 @@ abstract class DiagnosticsNode {
   ///    plugin.
   @mustCallSuper
   Map<String, Object> toJsonMap(DiagnosticsSerializationDelegate delegate) {
+    if (kReleaseMode) {
+      return <String, Object>{};
+    }
     final Map<String, Object> data = <String, Object>{
       'description': toDescription(),
       'type': runtimeType.toString(),
@@ -1626,6 +1639,9 @@ abstract class DiagnosticsNode {
     TextTreeConfiguration parentConfiguration,
     DiagnosticLevel minLevel = DiagnosticLevel.info,
   }) {
+    if (kReleaseMode) {
+      return super.toString();
+    }
     assert(style != null);
     assert(minLevel != null);
     if (_isSingleLine(style))
@@ -1646,6 +1662,8 @@ abstract class DiagnosticsNode {
   TextTreeConfiguration get textTreeConfiguration {
     assert(style != null);
     switch (style) {
+      case DiagnosticsTreeStyle.none:
+        return null;
       case DiagnosticsTreeStyle.dense:
         return denseTextConfiguration;
       case DiagnosticsTreeStyle.sparse:
@@ -1697,6 +1715,9 @@ abstract class DiagnosticsNode {
     TextTreeConfiguration parentConfiguration,
     DiagnosticLevel minLevel = DiagnosticLevel.debug,
   }) {
+    if (kReleaseMode) {
+      return '';
+    }
     return TextTreeRenderer(
       minLevel: minLevel,
       wrapWidth: 65,
@@ -2769,6 +2790,8 @@ class DiagnosticableNode<T extends Diagnosticable> extends DiagnosticsNode {
   DiagnosticPropertiesBuilder _cachedBuilder;
 
   DiagnosticPropertiesBuilder get _builder {
+    if (kReleaseMode)
+      return null;
     if (_cachedBuilder == null) {
       _cachedBuilder = DiagnosticPropertiesBuilder();
       value?.debugFillProperties(_cachedBuilder);
@@ -2778,14 +2801,14 @@ class DiagnosticableNode<T extends Diagnosticable> extends DiagnosticsNode {
 
   @override
   DiagnosticsTreeStyle get style {
-    return super.style ?? _builder.defaultDiagnosticsTreeStyle;
+    return kReleaseMode ? DiagnosticsTreeStyle.none : super.style ?? _builder.defaultDiagnosticsTreeStyle;
   }
 
   @override
-  String get emptyBodyDescription => _builder.emptyBodyDescription;
+  String get emptyBodyDescription => kReleaseMode ? '' : _builder.emptyBodyDescription;
 
   @override
-  List<DiagnosticsNode> getProperties() => _builder.properties;
+  List<DiagnosticsNode> getProperties() => kReleaseMode ? const <DiagnosticsNode>[] : _builder.properties;
 
   @override
   List<DiagnosticsNode> getChildren() {
@@ -2794,6 +2817,9 @@ class DiagnosticableNode<T extends Diagnosticable> extends DiagnosticsNode {
 
   @override
   String toDescription({ TextTreeConfiguration parentConfiguration }) {
+    if (kReleaseMode) {
+      return '';
+    }
     return value.toStringShort();
   }
 }
@@ -2866,7 +2892,9 @@ String describeEnum(Object enumEntry) {
 class DiagnosticPropertiesBuilder {
   /// Add a property to the list of properties.
   void add(DiagnosticsNode property) {
-    properties.add(property);
+    if (!kReleaseMode) {
+      properties.add(property);
+    }
   }
 
   /// List of properties accumulated so far.
@@ -3228,6 +3256,9 @@ abstract class DiagnosticableTree extends Diagnosticable {
     String joiner = ', ',
     DiagnosticLevel minLevel = DiagnosticLevel.debug,
   }) {
+    if (kReleaseMode) {
+      return toString();
+    }
     final StringBuffer result = StringBuffer();
     result.write(toString());
     result.write(joiner);
@@ -3312,6 +3343,9 @@ mixin DiagnosticableTreeMixin implements DiagnosticableTree {
     String joiner = ', ',
     DiagnosticLevel minLevel = DiagnosticLevel.debug,
   }) {
+    if (kReleaseMode) {
+      return toString();
+    }
     final StringBuffer result = StringBuffer();
     result.write(toStringShort());
     result.write(joiner);