diff --git a/dev/benchmarks/complex_layout/android/app/build.gradle b/dev/benchmarks/complex_layout/android/app/build.gradle
index c163c0da210..95066168290 100644
--- a/dev/benchmarks/complex_layout/android/app/build.gradle
+++ b/dev/benchmarks/complex_layout/android/app/build.gradle
@@ -15,8 +15,8 @@ apply plugin: 'com.android.application'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 26
-    buildToolsVersion '26.0.3'
+    compileSdkVersion 25
+    buildToolsVersion '25.0.3'
 
     lintOptions {
         disable 'InvalidPackage'
@@ -24,7 +24,7 @@ android {
 
     defaultConfig {
         minSdkVersion 16
-        targetSdkVersion 26
+        targetSdkVersion 25
         versionCode 1
         versionName "0.0.1"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -52,7 +52,7 @@ flutter {
 }
 
 dependencies {
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.1'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+    androidTestCompile 'com.android.support:support-annotations:25.4.0'
+    androidTestCompile 'com.android.support.test:runner:0.5'
+    androidTestCompile 'com.android.support.test:rules:0.5'
 }
diff --git a/dev/benchmarks/complex_layout/android/build.gradle b/dev/benchmarks/complex_layout/android/build.gradle
index 447688755cf..77cbd091409 100644
--- a/dev/benchmarks/complex_layout/android/build.gradle
+++ b/dev/benchmarks/complex_layout/android/build.gradle
@@ -1,26 +1,28 @@
 buildscript {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:2.3.3'
     }
 }
 
 allprojects {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 }
 
 rootProject.buildDir = '../build'
 subprojects {
     project.buildDir = "${rootProject.buildDir}/${project.name}"
-}
-subprojects {
     project.evaluationDependsOn(':app')
 }
 
diff --git a/dev/benchmarks/complex_layout/android/gradle/wrapper/gradle-wrapper.properties b/dev/benchmarks/complex_layout/android/gradle/wrapper/gradle-wrapper.properties
index aa901e1e0db..45e7f14e952 100644
--- a/dev/benchmarks/complex_layout/android/gradle/wrapper/gradle-wrapper.properties
+++ b/dev/benchmarks/complex_layout/android/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
diff --git a/dev/benchmarks/microbenchmarks/android/app/build.gradle b/dev/benchmarks/microbenchmarks/android/app/build.gradle
index 78f8d669303..16c4a2a4ca4 100644
--- a/dev/benchmarks/microbenchmarks/android/app/build.gradle
+++ b/dev/benchmarks/microbenchmarks/android/app/build.gradle
@@ -15,8 +15,8 @@ apply plugin: 'com.android.application'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 26
-    buildToolsVersion '26.0.3'
+    compileSdkVersion 25
+    buildToolsVersion '25.0.3'
 
     lintOptions {
         disable 'InvalidPackage'
@@ -24,7 +24,7 @@ android {
 
     defaultConfig {
         minSdkVersion 16
-        targetSdkVersion 26
+        targetSdkVersion 25
         versionCode 1
         versionName "0.0.1"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -44,7 +44,7 @@ flutter {
 }
 
 dependencies {
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.1'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+    androidTestCompile 'com.android.support:support-annotations:25.4.0'
+    androidTestCompile 'com.android.support.test:runner:0.5'
+    androidTestCompile 'com.android.support.test:rules:0.5'
 }
diff --git a/dev/benchmarks/microbenchmarks/android/build.gradle b/dev/benchmarks/microbenchmarks/android/build.gradle
index 447688755cf..77cbd091409 100644
--- a/dev/benchmarks/microbenchmarks/android/build.gradle
+++ b/dev/benchmarks/microbenchmarks/android/build.gradle
@@ -1,26 +1,28 @@
 buildscript {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:2.3.3'
     }
 }
 
 allprojects {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 }
 
 rootProject.buildDir = '../build'
 subprojects {
     project.buildDir = "${rootProject.buildDir}/${project.name}"
-}
-subprojects {
     project.evaluationDependsOn(':app')
 }
 
diff --git a/dev/benchmarks/microbenchmarks/android/gradle/wrapper/gradle-wrapper.properties b/dev/benchmarks/microbenchmarks/android/gradle/wrapper/gradle-wrapper.properties
index aa901e1e0db..45e7f14e952 100644
--- a/dev/benchmarks/microbenchmarks/android/gradle/wrapper/gradle-wrapper.properties
+++ b/dev/benchmarks/microbenchmarks/android/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
diff --git a/dev/integration_tests/channels/android/app/build.gradle b/dev/integration_tests/channels/android/app/build.gradle
index 14c7cad2393..40c3dca5d4b 100644
--- a/dev/integration_tests/channels/android/app/build.gradle
+++ b/dev/integration_tests/channels/android/app/build.gradle
@@ -15,8 +15,8 @@ apply plugin: 'com.android.application'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 26
-    buildToolsVersion '26.0.3'
+    compileSdkVersion 25
+    buildToolsVersion '25.0.3'
 
     lintOptions {
         disable 'InvalidPackage'
@@ -24,7 +24,7 @@ android {
 
     defaultConfig {
         minSdkVersion 16
-        targetSdkVersion 26
+        targetSdkVersion 25
         versionCode 1
         versionName "0.0.1"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -52,7 +52,7 @@ flutter {
 }
 
 dependencies {
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.1'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+    androidTestCompile 'com.android.support:support-annotations:25.4.0'
+    androidTestCompile 'com.android.support.test:runner:0.5'
+    androidTestCompile 'com.android.support.test:rules:0.5'
 }
diff --git a/dev/integration_tests/channels/android/build.gradle b/dev/integration_tests/channels/android/build.gradle
index 447688755cf..77cbd091409 100644
--- a/dev/integration_tests/channels/android/build.gradle
+++ b/dev/integration_tests/channels/android/build.gradle
@@ -1,26 +1,28 @@
 buildscript {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:2.3.3'
     }
 }
 
 allprojects {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 }
 
 rootProject.buildDir = '../build'
 subprojects {
     project.buildDir = "${rootProject.buildDir}/${project.name}"
-}
-subprojects {
     project.evaluationDependsOn(':app')
 }
 
diff --git a/dev/integration_tests/channels/android/gradle/wrapper/gradle-wrapper.properties b/dev/integration_tests/channels/android/gradle/wrapper/gradle-wrapper.properties
index aa901e1e0db..45e7f14e952 100755
--- a/dev/integration_tests/channels/android/gradle/wrapper/gradle-wrapper.properties
+++ b/dev/integration_tests/channels/android/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
diff --git a/dev/integration_tests/external_ui/android/app/build.gradle b/dev/integration_tests/external_ui/android/app/build.gradle
index 2dc2137baad..30b9d455060 100644
--- a/dev/integration_tests/external_ui/android/app/build.gradle
+++ b/dev/integration_tests/external_ui/android/app/build.gradle
@@ -15,8 +15,8 @@ apply plugin: 'com.android.application'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 26
-    buildToolsVersion '26.0.3'
+    compileSdkVersion 25
+    buildToolsVersion '25.0.3'
 
     lintOptions {
         disable 'InvalidPackage'
@@ -25,7 +25,7 @@ android {
     defaultConfig {
         applicationId "io.flutter.externalui"
         minSdkVersion 16
-        targetSdkVersion 26
+        targetSdkVersion 25
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -43,7 +43,7 @@ flutter {
 }
 
 dependencies {
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.1'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+    androidTestCompile 'com.android.support:support-annotations:25.4.0'
+    androidTestCompile 'com.android.support.test:runner:0.5'
+    androidTestCompile 'com.android.support.test:rules:0.5'
 }
diff --git a/dev/integration_tests/external_ui/android/build.gradle b/dev/integration_tests/external_ui/android/build.gradle
index 447688755cf..77cbd091409 100644
--- a/dev/integration_tests/external_ui/android/build.gradle
+++ b/dev/integration_tests/external_ui/android/build.gradle
@@ -1,26 +1,28 @@
 buildscript {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:2.3.3'
     }
 }
 
 allprojects {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 }
 
 rootProject.buildDir = '../build'
 subprojects {
     project.buildDir = "${rootProject.buildDir}/${project.name}"
-}
-subprojects {
     project.evaluationDependsOn(':app')
 }
 
diff --git a/dev/integration_tests/external_ui/android/gradle/wrapper/gradle-wrapper.properties b/dev/integration_tests/external_ui/android/gradle/wrapper/gradle-wrapper.properties
index aa901e1e0db..45e7f14e952 100644
--- a/dev/integration_tests/external_ui/android/gradle/wrapper/gradle-wrapper.properties
+++ b/dev/integration_tests/external_ui/android/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
diff --git a/dev/integration_tests/flavors/android/app/build.gradle b/dev/integration_tests/flavors/android/app/build.gradle
index 46e80a2a807..60a8db8a07e 100644
--- a/dev/integration_tests/flavors/android/app/build.gradle
+++ b/dev/integration_tests/flavors/android/app/build.gradle
@@ -15,8 +15,8 @@ apply plugin: 'com.android.application'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 26
-    buildToolsVersion '26.0.3'
+    compileSdkVersion 25
+    buildToolsVersion '25.0.3'
 
     lintOptions {
         disable 'InvalidPackage'
@@ -25,7 +25,7 @@ android {
     defaultConfig {
         applicationId "com.yourcompany.flavors"
         minSdkVersion 16
-        targetSdkVersion 26
+        targetSdkVersion 25
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -56,7 +56,7 @@ flutter {
 }
 
 dependencies {
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.1'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+    androidTestCompile 'com.android.support:support-annotations:25.4.0'
+    androidTestCompile 'com.android.support.test:runner:0.5'
+    androidTestCompile 'com.android.support.test:rules:0.5'
 }
diff --git a/dev/integration_tests/flavors/android/build.gradle b/dev/integration_tests/flavors/android/build.gradle
index 447688755cf..77cbd091409 100644
--- a/dev/integration_tests/flavors/android/build.gradle
+++ b/dev/integration_tests/flavors/android/build.gradle
@@ -1,26 +1,28 @@
 buildscript {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:2.3.3'
     }
 }
 
 allprojects {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 }
 
 rootProject.buildDir = '../build'
 subprojects {
     project.buildDir = "${rootProject.buildDir}/${project.name}"
-}
-subprojects {
     project.evaluationDependsOn(':app')
 }
 
diff --git a/dev/integration_tests/flavors/android/gradle/wrapper/gradle-wrapper.properties b/dev/integration_tests/flavors/android/gradle/wrapper/gradle-wrapper.properties
index aa901e1e0db..45e7f14e952 100644
--- a/dev/integration_tests/flavors/android/gradle/wrapper/gradle-wrapper.properties
+++ b/dev/integration_tests/flavors/android/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
diff --git a/dev/integration_tests/platform_interaction/android/app/build.gradle b/dev/integration_tests/platform_interaction/android/app/build.gradle
index 14c7cad2393..40c3dca5d4b 100644
--- a/dev/integration_tests/platform_interaction/android/app/build.gradle
+++ b/dev/integration_tests/platform_interaction/android/app/build.gradle
@@ -15,8 +15,8 @@ apply plugin: 'com.android.application'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 26
-    buildToolsVersion '26.0.3'
+    compileSdkVersion 25
+    buildToolsVersion '25.0.3'
 
     lintOptions {
         disable 'InvalidPackage'
@@ -24,7 +24,7 @@ android {
 
     defaultConfig {
         minSdkVersion 16
-        targetSdkVersion 26
+        targetSdkVersion 25
         versionCode 1
         versionName "0.0.1"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -52,7 +52,7 @@ flutter {
 }
 
 dependencies {
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.1'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+    androidTestCompile 'com.android.support:support-annotations:25.4.0'
+    androidTestCompile 'com.android.support.test:runner:0.5'
+    androidTestCompile 'com.android.support.test:rules:0.5'
 }
diff --git a/dev/integration_tests/platform_interaction/android/build.gradle b/dev/integration_tests/platform_interaction/android/build.gradle
index 447688755cf..77cbd091409 100644
--- a/dev/integration_tests/platform_interaction/android/build.gradle
+++ b/dev/integration_tests/platform_interaction/android/build.gradle
@@ -1,26 +1,28 @@
 buildscript {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:2.3.3'
     }
 }
 
 allprojects {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 }
 
 rootProject.buildDir = '../build'
 subprojects {
     project.buildDir = "${rootProject.buildDir}/${project.name}"
-}
-subprojects {
     project.evaluationDependsOn(':app')
 }
 
diff --git a/dev/integration_tests/platform_interaction/android/gradle/wrapper/gradle-wrapper.properties b/dev/integration_tests/platform_interaction/android/gradle/wrapper/gradle-wrapper.properties
index aa901e1e0db..45e7f14e952 100755
--- a/dev/integration_tests/platform_interaction/android/gradle/wrapper/gradle-wrapper.properties
+++ b/dev/integration_tests/platform_interaction/android/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
diff --git a/dev/integration_tests/ui/android/app/build.gradle b/dev/integration_tests/ui/android/app/build.gradle
index ba567756ab7..134fe518a07 100644
--- a/dev/integration_tests/ui/android/app/build.gradle
+++ b/dev/integration_tests/ui/android/app/build.gradle
@@ -15,8 +15,8 @@ apply plugin: 'com.android.application'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 26
-    buildToolsVersion '26.0.3'
+    compileSdkVersion 25
+    buildToolsVersion '25.0.2'
 
     lintOptions {
         disable 'InvalidPackage'
@@ -24,7 +24,7 @@ android {
 
     defaultConfig {
         minSdkVersion 16
-        targetSdkVersion 26
+        targetSdkVersion 25
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -44,7 +44,7 @@ flutter {
 }
 
 dependencies {
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.1'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+    androidTestCompile 'com.android.support:support-annotations:25.4.0'
+    androidTestCompile 'com.android.support.test:runner:0.5'
+    androidTestCompile 'com.android.support.test:rules:0.5'
 }
diff --git a/dev/integration_tests/ui/android/build.gradle b/dev/integration_tests/ui/android/build.gradle
index 447688755cf..77cbd091409 100644
--- a/dev/integration_tests/ui/android/build.gradle
+++ b/dev/integration_tests/ui/android/build.gradle
@@ -1,26 +1,28 @@
 buildscript {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:2.3.3'
     }
 }
 
 allprojects {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 }
 
 rootProject.buildDir = '../build'
 subprojects {
     project.buildDir = "${rootProject.buildDir}/${project.name}"
-}
-subprojects {
     project.evaluationDependsOn(':app')
 }
 
diff --git a/dev/integration_tests/ui/android/gradle/wrapper/gradle-wrapper.properties b/dev/integration_tests/ui/android/gradle/wrapper/gradle-wrapper.properties
index aa901e1e0db..45e7f14e952 100644
--- a/dev/integration_tests/ui/android/gradle/wrapper/gradle-wrapper.properties
+++ b/dev/integration_tests/ui/android/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
diff --git a/dev/manual_tests/android/app/build.gradle b/dev/manual_tests/android/app/build.gradle
index db48cc7576c..f798249aa1d 100644
--- a/dev/manual_tests/android/app/build.gradle
+++ b/dev/manual_tests/android/app/build.gradle
@@ -15,8 +15,8 @@ apply plugin: 'com.android.application'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 26
-    buildToolsVersion '26.0.3'
+    compileSdkVersion 25
+    buildToolsVersion '25.0.3'
 
     lintOptions {
         disable 'InvalidPackage'
@@ -26,7 +26,7 @@ android {
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
         applicationId "io.flutter.examples.manual_tests"
         minSdkVersion 16
-        targetSdkVersion 26
+        targetSdkVersion 25
         versionCode 1
         versionName "1.0"
     }
@@ -45,7 +45,7 @@ flutter {
 }
 
 dependencies {
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.1'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+    androidTestCompile 'com.android.support:support-annotations:25.4.0'
+    androidTestCompile 'com.android.support.test:runner:0.5'
+    androidTestCompile 'com.android.support.test:rules:0.5'
 }
diff --git a/dev/manual_tests/android/build.gradle b/dev/manual_tests/android/build.gradle
index 447688755cf..77cbd091409 100644
--- a/dev/manual_tests/android/build.gradle
+++ b/dev/manual_tests/android/build.gradle
@@ -1,26 +1,28 @@
 buildscript {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:2.3.3'
     }
 }
 
 allprojects {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 }
 
 rootProject.buildDir = '../build'
 subprojects {
     project.buildDir = "${rootProject.buildDir}/${project.name}"
-}
-subprojects {
     project.evaluationDependsOn(':app')
 }
 
diff --git a/dev/manual_tests/android/gradle/wrapper/gradle-wrapper.properties b/dev/manual_tests/android/gradle/wrapper/gradle-wrapper.properties
index aa901e1e0db..45e7f14e952 100755
--- a/dev/manual_tests/android/gradle/wrapper/gradle-wrapper.properties
+++ b/dev/manual_tests/android/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
diff --git a/examples/catalog/android/app/build.gradle b/examples/catalog/android/app/build.gradle
index b6e4e14cc42..0e547471d39 100644
--- a/examples/catalog/android/app/build.gradle
+++ b/examples/catalog/android/app/build.gradle
@@ -15,8 +15,8 @@ apply plugin: 'com.android.application'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 26
-    buildToolsVersion '26.0.3'
+    compileSdkVersion 25
+    buildToolsVersion '25.0.3'
 
     lintOptions {
         disable 'InvalidPackage'
@@ -25,7 +25,7 @@ android {
     defaultConfig {
         applicationId "io.flutter.examples.catalog"
         minSdkVersion 16
-        targetSdkVersion 26
+        targetSdkVersion 25
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -45,7 +45,7 @@ flutter {
 }
 
 dependencies {
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.1'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+    androidTestCompile 'com.android.support:support-annotations:25.4.0'
+    androidTestCompile 'com.android.support.test:runner:0.5'
+    androidTestCompile 'com.android.support.test:rules:0.5'
 }
diff --git a/examples/catalog/android/build.gradle b/examples/catalog/android/build.gradle
index 447688755cf..77cbd091409 100644
--- a/examples/catalog/android/build.gradle
+++ b/examples/catalog/android/build.gradle
@@ -1,26 +1,28 @@
 buildscript {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:2.3.3'
     }
 }
 
 allprojects {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 }
 
 rootProject.buildDir = '../build'
 subprojects {
     project.buildDir = "${rootProject.buildDir}/${project.name}"
-}
-subprojects {
     project.evaluationDependsOn(':app')
 }
 
diff --git a/examples/catalog/android/gradle/wrapper/gradle-wrapper.properties b/examples/catalog/android/gradle/wrapper/gradle-wrapper.properties
index aa901e1e0db..45e7f14e952 100644
--- a/examples/catalog/android/gradle/wrapper/gradle-wrapper.properties
+++ b/examples/catalog/android/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
diff --git a/examples/flutter_gallery/android/app/build.gradle b/examples/flutter_gallery/android/app/build.gradle
index 24aca4a832e..2b4d1ee17b2 100644
--- a/examples/flutter_gallery/android/app/build.gradle
+++ b/examples/flutter_gallery/android/app/build.gradle
@@ -15,8 +15,8 @@ apply plugin: 'com.android.application'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 26
-    buildToolsVersion '26.0.3'
+    compileSdkVersion 25
+    buildToolsVersion '25.0.3'
 
     lintOptions {
         disable 'InvalidPackage'
@@ -25,7 +25,7 @@ android {
     defaultConfig {
         applicationId "io.flutter.examples.gallery"
         minSdkVersion 16
-        targetSdkVersion 26
+        targetSdkVersion 25
         versionCode 1
         versionName "0.0.1"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -53,7 +53,9 @@ flutter {
 }
 
 dependencies {
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.1'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+    androidTestCompile 'com.android.support:support-annotations:25.4.0'
+    androidTestCompile 'com.android.support.test:runner:0.5'
+    androidTestCompile 'com.android.support.test:rules:0.5'
+    androidTestCompile 'org.hamcrest:hamcrest-library:1.3'
+    androidTestCompile 'com.android.support.test.espresso:espresso-core:2.2.2'
 }
diff --git a/examples/flutter_gallery/android/build.gradle b/examples/flutter_gallery/android/build.gradle
index 447688755cf..77cbd091409 100644
--- a/examples/flutter_gallery/android/build.gradle
+++ b/examples/flutter_gallery/android/build.gradle
@@ -1,26 +1,28 @@
 buildscript {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:2.3.3'
     }
 }
 
 allprojects {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 }
 
 rootProject.buildDir = '../build'
 subprojects {
     project.buildDir = "${rootProject.buildDir}/${project.name}"
-}
-subprojects {
     project.evaluationDependsOn(':app')
 }
 
diff --git a/examples/flutter_gallery/android/gradle/wrapper/gradle-wrapper.properties b/examples/flutter_gallery/android/gradle/wrapper/gradle-wrapper.properties
index aa901e1e0db..45e7f14e952 100644
--- a/examples/flutter_gallery/android/gradle/wrapper/gradle-wrapper.properties
+++ b/examples/flutter_gallery/android/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
diff --git a/examples/flutter_view/android/app/build.gradle b/examples/flutter_view/android/app/build.gradle
index 8df0a0cbe42..e3d4c7a0523 100644
--- a/examples/flutter_view/android/app/build.gradle
+++ b/examples/flutter_view/android/app/build.gradle
@@ -15,8 +15,8 @@ apply plugin: 'com.android.application'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 26
-    buildToolsVersion '26.0.3'
+    compileSdkVersion 25
+    buildToolsVersion '25.0.3'
 
     lintOptions {
         disable 'InvalidPackage'
@@ -25,7 +25,7 @@ android {
     defaultConfig {
         applicationId "io.flutter.examples.flutter_view"
         minSdkVersion 16
-        targetSdkVersion 26
+        targetSdkVersion 25
         versionCode 1
         versionName "0.0.1"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -45,9 +45,9 @@ flutter {
 }
 
 dependencies {
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.1'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+    androidTestCompile 'com.android.support:support-annotations:25.4.0'
+    androidTestCompile 'com.android.support.test:runner:0.5'
+    androidTestCompile 'com.android.support.test:rules:0.5'
     compile 'com.android.support:appcompat-v7:25.0.0'
     compile 'com.android.support:design:25.0.0'
 }
diff --git a/examples/flutter_view/android/build.gradle b/examples/flutter_view/android/build.gradle
index 447688755cf..77cbd091409 100644
--- a/examples/flutter_view/android/build.gradle
+++ b/examples/flutter_view/android/build.gradle
@@ -1,26 +1,28 @@
 buildscript {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:2.3.3'
     }
 }
 
 allprojects {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 }
 
 rootProject.buildDir = '../build'
 subprojects {
     project.buildDir = "${rootProject.buildDir}/${project.name}"
-}
-subprojects {
     project.evaluationDependsOn(':app')
 }
 
diff --git a/examples/flutter_view/android/gradle/wrapper/gradle-wrapper.properties b/examples/flutter_view/android/gradle/wrapper/gradle-wrapper.properties
index aa901e1e0db..45e7f14e952 100644
--- a/examples/flutter_view/android/gradle/wrapper/gradle-wrapper.properties
+++ b/examples/flutter_view/android/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
diff --git a/examples/hello_world/android/app/build.gradle b/examples/hello_world/android/app/build.gradle
index 69cc6672ad8..7b3edc8d94e 100644
--- a/examples/hello_world/android/app/build.gradle
+++ b/examples/hello_world/android/app/build.gradle
@@ -15,8 +15,8 @@ apply plugin: 'com.android.application'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 26
-    buildToolsVersion '26.0.3'
+    compileSdkVersion 25
+    buildToolsVersion '25.0.3'
 
     lintOptions {
         disable 'InvalidPackage'
@@ -25,7 +25,7 @@ android {
     defaultConfig {
         applicationId "io.flutter.examples.hello_world"
         minSdkVersion 16
-        targetSdkVersion 26
+        targetSdkVersion 25
         versionCode 1
         versionName "0.0.1"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -45,7 +45,7 @@ flutter {
 }
 
 dependencies {
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.1'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+    androidTestCompile 'com.android.support:support-annotations:25.4.0'
+    androidTestCompile 'com.android.support.test:runner:0.5'
+    androidTestCompile 'com.android.support.test:rules:0.5'
 }
diff --git a/examples/hello_world/android/build.gradle b/examples/hello_world/android/build.gradle
index 447688755cf..77cbd091409 100644
--- a/examples/hello_world/android/build.gradle
+++ b/examples/hello_world/android/build.gradle
@@ -1,26 +1,28 @@
 buildscript {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:2.3.3'
     }
 }
 
 allprojects {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 }
 
 rootProject.buildDir = '../build'
 subprojects {
     project.buildDir = "${rootProject.buildDir}/${project.name}"
-}
-subprojects {
     project.evaluationDependsOn(':app')
 }
 
diff --git a/examples/hello_world/android/gradle/wrapper/gradle-wrapper.properties b/examples/hello_world/android/gradle/wrapper/gradle-wrapper.properties
index aa901e1e0db..45e7f14e952 100644
--- a/examples/hello_world/android/gradle/wrapper/gradle-wrapper.properties
+++ b/examples/hello_world/android/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
diff --git a/examples/layers/android/app/build.gradle b/examples/layers/android/app/build.gradle
index 5e501fc37a9..374a20a5f57 100644
--- a/examples/layers/android/app/build.gradle
+++ b/examples/layers/android/app/build.gradle
@@ -15,8 +15,8 @@ apply plugin: 'com.android.application'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 26
-    buildToolsVersion '26.0.3'
+    compileSdkVersion 25
+    buildToolsVersion '25.0.3'
 
     lintOptions {
         disable 'InvalidPackage'
@@ -25,7 +25,7 @@ android {
     defaultConfig {
         applicationId "io.flutter.examples.layers"
         minSdkVersion 16
-        targetSdkVersion 26
+        targetSdkVersion 25
         versionCode 1
         versionName "0.0.1"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -45,7 +45,7 @@ flutter {
 }
 
 dependencies {
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.1'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+    androidTestCompile 'com.android.support:support-annotations:25.4.0'
+    androidTestCompile 'com.android.support.test:runner:0.5'
+    androidTestCompile 'com.android.support.test:rules:0.5'
 }
diff --git a/examples/layers/android/build.gradle b/examples/layers/android/build.gradle
index 447688755cf..77cbd091409 100644
--- a/examples/layers/android/build.gradle
+++ b/examples/layers/android/build.gradle
@@ -1,26 +1,28 @@
 buildscript {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:2.3.3'
     }
 }
 
 allprojects {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 }
 
 rootProject.buildDir = '../build'
 subprojects {
     project.buildDir = "${rootProject.buildDir}/${project.name}"
-}
-subprojects {
     project.evaluationDependsOn(':app')
 }
 
diff --git a/examples/layers/android/gradle/wrapper/gradle-wrapper.properties b/examples/layers/android/gradle/wrapper/gradle-wrapper.properties
index aa901e1e0db..45e7f14e952 100644
--- a/examples/layers/android/gradle/wrapper/gradle-wrapper.properties
+++ b/examples/layers/android/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
diff --git a/examples/platform_channel/android/app/build.gradle b/examples/platform_channel/android/app/build.gradle
index 1d415919328..409bbfb13cf 100644
--- a/examples/platform_channel/android/app/build.gradle
+++ b/examples/platform_channel/android/app/build.gradle
@@ -15,8 +15,8 @@ apply plugin: 'com.android.application'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 26
-    buildToolsVersion '26.0.3'
+    compileSdkVersion 25
+    buildToolsVersion '25.0.3'
 
     lintOptions {
         disable 'InvalidPackage'
@@ -25,7 +25,7 @@ android {
     defaultConfig {
         applicationId "io.flutter.examples.platform_channel"
         minSdkVersion 16
-        targetSdkVersion 26
+        targetSdkVersion 25
         versionCode 1
         versionName "0.0.1"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -45,7 +45,7 @@ flutter {
 }
 
 dependencies {
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.1'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+    androidTestCompile 'com.android.support:support-annotations:25.4.0'
+    androidTestCompile 'com.android.support.test:runner:0.5'
+    androidTestCompile 'com.android.support.test:rules:0.5'
 }
diff --git a/examples/platform_channel/android/build.gradle b/examples/platform_channel/android/build.gradle
index 447688755cf..77cbd091409 100644
--- a/examples/platform_channel/android/build.gradle
+++ b/examples/platform_channel/android/build.gradle
@@ -1,26 +1,28 @@
 buildscript {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:2.3.3'
     }
 }
 
 allprojects {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 }
 
 rootProject.buildDir = '../build'
 subprojects {
     project.buildDir = "${rootProject.buildDir}/${project.name}"
-}
-subprojects {
     project.evaluationDependsOn(':app')
 }
 
diff --git a/examples/platform_channel/android/gradle/wrapper/gradle-wrapper.properties b/examples/platform_channel/android/gradle/wrapper/gradle-wrapper.properties
index aa901e1e0db..45e7f14e952 100644
--- a/examples/platform_channel/android/gradle/wrapper/gradle-wrapper.properties
+++ b/examples/platform_channel/android/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
diff --git a/examples/platform_view/android/app/build.gradle b/examples/platform_view/android/app/build.gradle
index 3f29ef6a085..e5f19bf9aa7 100644
--- a/examples/platform_view/android/app/build.gradle
+++ b/examples/platform_view/android/app/build.gradle
@@ -15,8 +15,8 @@ apply plugin: 'com.android.application'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 26
-    buildToolsVersion '26.0.3'
+    compileSdkVersion 25
+    buildToolsVersion '25.0.3'
 
     lintOptions {
         disable 'InvalidPackage'
@@ -25,7 +25,7 @@ android {
     defaultConfig {
         applicationId "io.flutter.examples.platform_view"
         minSdkVersion 16
-        targetSdkVersion 26
+        targetSdkVersion 25
         versionCode 1
         versionName "0.0.1"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -45,9 +45,9 @@ flutter {
 }
 
 dependencies {
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.1'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+    androidTestCompile 'com.android.support:support-annotations:25.4.0'
+    androidTestCompile 'com.android.support.test:runner:0.5'
+    androidTestCompile 'com.android.support.test:rules:0.5'
     compile 'com.android.support:appcompat-v7:25.0.0'
     compile 'com.android.support:design:25.0.0'
 }
diff --git a/examples/platform_view/android/build.gradle b/examples/platform_view/android/build.gradle
index 447688755cf..77cbd091409 100644
--- a/examples/platform_view/android/build.gradle
+++ b/examples/platform_view/android/build.gradle
@@ -1,26 +1,28 @@
 buildscript {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:2.3.3'
     }
 }
 
 allprojects {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 }
 
 rootProject.buildDir = '../build'
 subprojects {
     project.buildDir = "${rootProject.buildDir}/${project.name}"
-}
-subprojects {
     project.evaluationDependsOn(':app')
 }
 
diff --git a/examples/platform_view/android/gradle/wrapper/gradle-wrapper.properties b/examples/platform_view/android/gradle/wrapper/gradle-wrapper.properties
index aa901e1e0db..45e7f14e952 100644
--- a/examples/platform_view/android/gradle/wrapper/gradle-wrapper.properties
+++ b/examples/platform_view/android/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
diff --git a/examples/stocks/android/app/build.gradle b/examples/stocks/android/app/build.gradle
index 8004808a73b..78f362b4940 100644
--- a/examples/stocks/android/app/build.gradle
+++ b/examples/stocks/android/app/build.gradle
@@ -15,8 +15,8 @@ apply plugin: 'com.android.application'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 26
-    buildToolsVersion '26.0.3'
+    compileSdkVersion 25
+    buildToolsVersion '25.0.3'
 
     lintOptions {
         disable 'InvalidPackage'
@@ -25,7 +25,7 @@ android {
     defaultConfig {
         applicationId "io.flutter.examples.stocks"
         minSdkVersion 16
-        targetSdkVersion 26
+        targetSdkVersion 25
         versionCode 1
         versionName "0.0.1"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -45,7 +45,7 @@ flutter {
 }
 
 dependencies {
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.1'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+    androidTestCompile 'com.android.support:support-annotations:25.4.0'
+    androidTestCompile 'com.android.support.test:runner:0.5'
+    androidTestCompile 'com.android.support.test:rules:0.5'
 }
diff --git a/examples/stocks/android/build.gradle b/examples/stocks/android/build.gradle
index 447688755cf..77cbd091409 100644
--- a/examples/stocks/android/build.gradle
+++ b/examples/stocks/android/build.gradle
@@ -1,26 +1,28 @@
 buildscript {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:2.3.3'
     }
 }
 
 allprojects {
     repositories {
-        google()
         jcenter()
+        maven {
+            url "https://maven.google.com"
+        }
     }
 }
 
 rootProject.buildDir = '../build'
 subprojects {
     project.buildDir = "${rootProject.buildDir}/${project.name}"
-}
-subprojects {
     project.evaluationDependsOn(':app')
 }
 
diff --git a/examples/stocks/android/gradle/wrapper/gradle-wrapper.properties b/examples/stocks/android/gradle/wrapper/gradle-wrapper.properties
index aa901e1e0db..45e7f14e952 100755
--- a/examples/stocks/android/gradle/wrapper/gradle-wrapper.properties
+++ b/examples/stocks/android/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip