Gradle error

Im getting this error when trying to buld my app:

Code (CSharp):

1. CommandInvokationFailure: Gradle build failed.
2. A:\Roger\Unity\Editor\Data\PlaybackEngines\AndroidPlayer/Tools\OpenJDK\Windows\bin\java.exe -classpath "A:\Roger\Unity\Editor\Data\PlaybackEngines\AndroidPlayer\Tools\gradle\lib\gradle-launcher-4.6.jar" org.gradle.launcher.GradleMain "-Dorg.gradle.jvmargs=-Xmx4096m" "assembleRelease"
3.  
4. stderr[
5.  
6. FAILURE: Build failed with an exception.
7.  
8. * What went wrong:
9. Could not resolve all files for configuration ':_internal_aapt2_binary'.
10. > Could not resolve com.android.tools.build:aapt2:3.2.0-4818971.
11.   Required by:
12.       project :
13.    > Could not resolve com.android.tools.build:aapt2:3.2.0-4818971.
14.       > Could not get resource 'https://dl.google.com/dl/android/maven2/com/android/tools/build/aapt2/3.2.0-4818971/aapt2-3.2.0-4818971.pom'.
15.          > Could not GET 'https://dl.google.com/dl/android/maven2/com/android/tools/build/aapt2/3.2.0-4818971/aapt2-3.2.0-4818971.pom'.
16.             > Connect to dl.google.com:443 [dl.google.com/172.217.8.110] failed: Connection timed out: connect
17.    > Could not resolve com.android.tools.build:aapt2:3.2.0-4818971.
18.       > Could not get resource 'https://jcenter.bintray.com/com/android/tools/build/aapt2/3.2.0-4818971/aapt2-3.2.0-4818971.pom'.
19.          > Could not GET 'https://jcenter.bintray.com/com/android/tools/build/aapt2/3.2.0-4818971/aapt2-3.2.0-4818971.pom'.
20.             > jcenter.bintray.com
21.  
22. * Try:
23. Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
24.  
25. * Get more help at https://help.gradle.org
26.  
27. BUILD FAILED in 38s
28. ]
29. stdout[
30. :checkReleaseClasspath
31. :preBuild UP-TO-DATE
32. :preReleaseBuild
33. :compileReleaseAidl NO-SOURCE
34. :compileReleaseRenderscript
35. :checkReleaseManifest
36. :generateReleaseBuildConfig
37. :prepareLintJar
38. :mainApkListPersistenceRelease
39. :generateReleaseResValues
40. :generateReleaseResources
41. :mergeReleaseResources FAILED
42. 9 actionable tasks: 9 executed
43. ]
44. exit code: 1
45. UnityEditor.Android.Command.WaitForProgramToRun (UnityEditor.Utils.Program p, UnityEditor.Android.Command+WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg) (at <177bc8179be6497489c4b5b319f290d7>:0)
46. UnityEditor.Android.Command.Run (System.Diagnostics.ProcessStartInfo psi, UnityEditor.Android.Command+WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg) (at <177bc8179be6497489c4b5b319f290d7>:0)
47. UnityEditor.Android.Command.Run (System.String command, System.String args, System.String workingdir, UnityEditor.Android.Command+WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg) (at <177bc8179be6497489c4b5b319f290d7>:0)
48. UnityEditor.Android.AndroidJavaTools.RunJava (System.String args, System.String workingdir, System.Action`1[T] progress, System.String error) (at <177bc8179be6497489c4b5b319f290d7>:0)
49. UnityEditor.Android.GradleWrapper.Run (UnityEditor.Android.AndroidJavaTools javaTools, System.String workingdir, System.String task, System.Action`1[T] progress) (at <177bc8179be6497489c4b5b319f290d7>:0)
50. Rethrow as GradleInvokationException: Gradle build failed
51. UnityEditor.Android.GradleWrapper.Run (UnityEditor.Android.AndroidJavaTools javaTools, System.String workingdir, System.String task, System.Action`1[T] progress) (at <177bc8179be6497489c4b5b319f290d7>:0)
52. UnityEditor.Android.PostProcessor.Tasks.BuildGradleProject.Execute (UnityEditor.Android.PostProcessor.PostProcessorContext context) (at <177bc8179be6497489c4b5b319f290d7>:0)
53. UnityEditor.Android.PostProcessor.PostProcessRunner.RunAllTasks (UnityEditor.Android.PostProcessor.PostProcessorContext context) (at <177bc8179be6497489c4b5b319f290d7>:0)
54. Rethrow as BuildFailedException: Exception of type 'UnityEditor.Build.BuildFailedException' was thrown.
55. UnityEditor.Android.PostProcessor.CancelPostProcess.AbortBuild (System.String title, System.String message, System.Exception ex) (at <177bc8179be6497489c4b5b319f290d7>:0)
56. UnityEditor.Android.PostProcessor.PostProcessRunner.RunAllTasks (UnityEditor.Android.PostProcessor.PostProcessorContext context) (at <177bc8179be6497489c4b5b319f290d7>:0)
57. UnityEditor.Android.PostProcessAndroidPlayer.PostProcess (UnityEditor.BuildTarget target, System.String stagingAreaData, System.String stagingArea, System.String playerPackage, System.String installPath, System.String companyName, System.String productName, UnityEditor.BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.Build.Reporting.BuildReport report) (at <177bc8179be6497489c4b5b319f290d7>:0)
58. UnityEditor.Android.AndroidBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args, UnityEditor.BuildProperties& outProperties) (at <177bc8179be6497489c4b5b319f290d7>:0)
59. UnityEditor.PostprocessBuildPlayer.Postprocess (UnityEditor.BuildTargetGroup targetGroup, UnityEditor.BuildTarget target, System.String installPath, System.String companyName, System.String productName, System.Int32 width, System.Int32 height, UnityEditor.BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.Build.Reporting.BuildReport report) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/PostprocessBuildPlayer.cs:281)
60. UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
61.  

I guess that Unity is trying to download gradle and fails, because my PC is disconnected. Until 2018.3 I solved this using internal compiler, but now it is deprecated. How can I installa working gradle in an offline PC?

 

Show your gradle template

 

Where can I find it?

 

I think I found them:
this is libTemplate.gradle

Code (CSharp):

1.  
2. buildscript {
3.     repositories {
4.         google()
5.         jcenter()
6.     }
7.     dependencies {
8.         classpath 'com.android.tools.build:gradle:3.2.0'
9.     }
10. }
11.  
12. apply plugin: 'android-library'
13.  
14. dependencies {
15.     implementation fileTree(dir: 'bin', include: ['*.jar'])
16.     implementation fileTree(dir: 'libs', include: ['*.jar'])
17. }
18.  
19. android {
20.     sourceSets {
21.         main {
22.             manifest.srcFile 'AndroidManifest.xml'
23.             //java.srcDirs = ['src']
24.             res.srcDirs = ['res']
25.             assets.srcDirs = ['assets']
26.             jniLibs.srcDirs = ['libs']
27.         }
28.     }
29.  
30.     compileSdkVersion **APIVERSION**
31.     buildToolsVersion '**BUILDTOOLS**'
32.     defaultConfig {
33.         targetSdkVersion **LIBSDKTARGET**
34.     }
35.  
36.     lintOptions {
37.         abortOnError false
38.     }
39. }
40.  
41.  

and thi sis mainTemplate.gradle

Code (CSharp):

1. // GENERATED BY UNITY. REMOVE THIS COMMENT TO PREVENT OVERWRITING WHEN EXPORTING AGAIN
2.  
3. buildscript {
4.     repositories {
5.         google()
6.         jcenter()
7.     }
8.  
9.     dependencies {
10.         classpath 'com.android.tools.build:gradle:3.2.0'
11. **BUILD_SCRIPT_DEPS**}
12. }
13.  
14. allprojects {
15.     repositories {
16.         google()
17.         jcenter()
18.         flatDir {
19.             dirs 'libs'
20.         }
21.     }
22. }
23.  
24. apply plugin: 'com.android.application'
25. **APPLY_PLUGINS**
26.  
27. dependencies {
28.     implementation fileTree(dir: 'libs', include: ['*.jar'])
29. **DEPS**}
30.  
31. android {
32.     compileSdkVersion **APIVERSION**
33.     buildToolsVersion '**BUILDTOOLS**'
34.  
35.     compileOptions {
36.         sourceCompatibility JavaVersion.VERSION_1_8
37.         targetCompatibility JavaVersion.VERSION_1_8
38.     }
39.  
40.     defaultConfig {
41.         minSdkVersion **MINSDKVERSION**
42.         targetSdkVersion **TARGETSDKVERSION**
43.         applicationId '**APPLICATIONID**'
44.         ndk {
45.             abiFilters **ABIFILTERS**
46.         }
47.         versionCode **VERSIONCODE**
48.         versionName '**VERSIONNAME**'
49.     }
50.  
51.     lintOptions {
52.         abortOnError false
53.     }
54.  
55.     aaptOptions {
56.         noCompress = ['.unity3d', '.ress', '.resource', '.obb'**STREAMING_ASSETS**]
57.         ignoreAssetsPattern = "!.svn:!.git:!.ds_store:!*.scc:.*:!CVS:!thumbs.db:!picasa.ini:!*~"
58.     }**SIGN**
59.  
60.     buildTypes {
61.         debug {
62.             minifyEnabled **MINIFY_DEBUG**
63.             useProguard **PROGUARD_DEBUG**
64.             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-unity.txt'**USER_PROGUARD****SIGNCONFIG**
65.             jniDebuggable true
66.         }
67.         release {
68.             minifyEnabled **MINIFY_RELEASE**
69.             useProguard **PROGUARD_RELEASE**
70.             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-unity.txt'**USER_PROGUARD****SIGNCONFIG**
71.         }
72.     }**PACKAGING_OPTIONS****SPLITS**
73. **BUILT_APK_LOCATION**
74. **EXTERNAL_SOURCES**
75.     bundle {
76.         language {
77.             enableSplit = false
78.         }
79.         density {
80.             enableSplit = false
81.         }
82.         abi {
83.             enableSplit = true
84.         }
85.     }
86. }**SPLITS_VERSION_CODE****REPOSITORIES****SOURCE_BUILD_SETUP**
87.  

 

Hey Rogerdv, have you solve the problem and how?

 

The partial solution is to connect the PC to internet through a VPN (Im in Cuba) and let it do the required download. The second error, caused by some missing file I think, havent been solved yet. Some friends around says that copying some files to offline PCs it can be solved too, but I havent managed to do it.
My current approach is to use 2018.4 to compile my Android project and 2019 for other projects.