diff --git a/examples/tutorials/android/android-tutorial-1/build.gradle b/examples/tutorials/android/android-tutorial-1/build.gradle
index 32265afc19..33bac31fbb 100644
--- a/examples/tutorials/android/android-tutorial-1/build.gradle
+++ b/examples/tutorials/android/android-tutorial-1/build.gradle
@@ -39,10 +39,10 @@ android {
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
-	    sourceSets {
+            sourceSets {
                 main {
                     manifest.srcFile 'AndroidManifest.xml'
-		    java.srcDirs = ['src']
+                    java.srcDirs = ['src']
                     resources.srcDirs = ['src']
                     aidl.srcDirs = ['src']
                     renderscript.srcDirs = ['src']
@@ -61,8 +61,10 @@ android {
 }
 
 afterEvaluate {
-    compileDebugJavaWithJavac.dependsOn 'externalNativeBuildDebug'
-    compileReleaseJavaWithJavac.dependsOn 'externalNativeBuildRelease'
+    if (project.hasProperty('compileDebugJavaWithJavac'))
+        project.compileDebugJavaWithJavac.dependsOn 'externalNativeBuildDebug'
+    if (project.hasProperty('compileReleaseJavaWithJavac'))
+        project.compileReleaseJavaWithJavac.dependsOn 'externalNativeBuildRelease'
 }
 
 dependencies {
diff --git a/examples/tutorials/android/android-tutorial-2/build.gradle b/examples/tutorials/android/android-tutorial-2/build.gradle
index 1cc6177ed0..0fff221ce9 100644
--- a/examples/tutorials/android/android-tutorial-2/build.gradle
+++ b/examples/tutorials/android/android-tutorial-2/build.gradle
@@ -39,10 +39,10 @@ android {
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
-	    sourceSets {
+            sourceSets {
                 main {
                     manifest.srcFile 'AndroidManifest.xml'
-		    java.srcDirs = ['src']
+                    java.srcDirs = ['src']
                     resources.srcDirs = ['src']
                     aidl.srcDirs = ['src']
                     renderscript.srcDirs = ['src']
@@ -61,8 +61,10 @@ android {
 }
 
 afterEvaluate {
-    compileDebugJavaWithJavac.dependsOn 'externalNativeBuildDebug'
-    compileReleaseJavaWithJavac.dependsOn 'externalNativeBuildRelease'
+    if (project.hasProperty('compileDebugJavaWithJavac'))
+        project.compileDebugJavaWithJavac.dependsOn 'externalNativeBuildDebug'
+    if (project.hasProperty('compileReleaseJavaWithJavac'))
+        project.compileReleaseJavaWithJavac.dependsOn 'externalNativeBuildRelease'
 }
 
 dependencies {
diff --git a/examples/tutorials/android/android-tutorial-3/build.gradle b/examples/tutorials/android/android-tutorial-3/build.gradle
index d16848ab73..ea318bc053 100644
--- a/examples/tutorials/android/android-tutorial-3/build.gradle
+++ b/examples/tutorials/android/android-tutorial-3/build.gradle
@@ -39,10 +39,10 @@ android {
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
-	    sourceSets {
+            sourceSets {
                 main {
                     manifest.srcFile 'AndroidManifest.xml'
-		    java.srcDirs = ['src']
+                    java.srcDirs = ['src']
                     resources.srcDirs = ['src']
                     aidl.srcDirs = ['src']
                     renderscript.srcDirs = ['src']
@@ -61,8 +61,10 @@ android {
 }
 
 afterEvaluate {
-    compileDebugJavaWithJavac.dependsOn 'externalNativeBuildDebug'
-    compileReleaseJavaWithJavac.dependsOn 'externalNativeBuildRelease'
+    if (project.hasProperty('compileDebugJavaWithJavac'))
+        project.compileDebugJavaWithJavac.dependsOn 'externalNativeBuildDebug'
+    if (project.hasProperty('compileReleaseJavaWithJavac'))
+        project.compileReleaseJavaWithJavac.dependsOn 'externalNativeBuildRelease'
 }
 
 dependencies {
diff --git a/examples/tutorials/android/android-tutorial-4/build.gradle b/examples/tutorials/android/android-tutorial-4/build.gradle
index 36a3e38189..d068277936 100644
--- a/examples/tutorials/android/android-tutorial-4/build.gradle
+++ b/examples/tutorials/android/android-tutorial-4/build.gradle
@@ -39,10 +39,10 @@ android {
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
-	    sourceSets {
+            sourceSets {
                 main {
                     manifest.srcFile 'AndroidManifest.xml'
-		    java.srcDirs = ['src']
+                    java.srcDirs = ['src']
                     resources.srcDirs = ['src']
                     aidl.srcDirs = ['src']
                     renderscript.srcDirs = ['src']
@@ -61,8 +61,10 @@ android {
 }
 
 afterEvaluate {
-    compileDebugJavaWithJavac.dependsOn 'externalNativeBuildDebug'
-    compileReleaseJavaWithJavac.dependsOn 'externalNativeBuildRelease'
+    if (project.hasProperty('compileDebugJavaWithJavac'))
+        project.compileDebugJavaWithJavac.dependsOn 'externalNativeBuildDebug'
+    if (project.hasProperty('compileReleaseJavaWithJavac'))
+        project.compileReleaseJavaWithJavac.dependsOn 'externalNativeBuildRelease'
 }
 
 dependencies {
diff --git a/examples/tutorials/android/android-tutorial-5/build.gradle b/examples/tutorials/android/android-tutorial-5/build.gradle
index 136e2c3ccb..e18fb2f0b2 100644
--- a/examples/tutorials/android/android-tutorial-5/build.gradle
+++ b/examples/tutorials/android/android-tutorial-5/build.gradle
@@ -39,10 +39,10 @@ android {
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
-	    sourceSets {
+            sourceSets {
                 main {
                     manifest.srcFile 'AndroidManifest.xml'
-		    java.srcDirs = ['src']
+                    java.srcDirs = ['src']
                     resources.srcDirs = ['src']
                     aidl.srcDirs = ['src']
                     renderscript.srcDirs = ['src']
@@ -61,8 +61,10 @@ android {
 }
 
 afterEvaluate {
-    compileDebugJavaWithJavac.dependsOn 'externalNativeBuildDebug'
-    compileReleaseJavaWithJavac.dependsOn 'externalNativeBuildRelease'
+    if (project.hasProperty('compileDebugJavaWithJavac'))
+        project.compileDebugJavaWithJavac.dependsOn 'externalNativeBuildDebug'
+    if (project.hasProperty('compileReleaseJavaWithJavac'))
+        project.compileReleaseJavaWithJavac.dependsOn 'externalNativeBuildRelease'
 }
 
 dependencies {