ConstraintLayout is just small point on the design palette
Answered
Hello !
I created new Android project as Empty Activity. On the Design Palette the ConstraintLayout is depicted as small point. But on the my Android phone the application looks ok. I tried other templates . The same situation. 
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Can not reproduce. Try 2018.2.2 from https://www.jetbrains.com/idea/download. Also try to use "infer constraint" action: https://stackoverflow.com/a/42594154/2000323.
If issue remains, attach a sample xml file or sample application and specify your monitor configuration.
The issue remain. I use 2018.2.2 version , OS linux Ubuntu 18.04 64 bit , two monitors
XML file:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" tools:layout_editor_absoluteY="25dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
android:id="@+id/textView"
app:layout_constraintTop_toTopOf="parent" app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toStartOf="parent" app:layout_constraintBottom_toTopOf="parent"/>
</android.support.constraint.ConstraintLayout>
Btw, i created empty project in Android Studio - the same situation.
Still works fine for me. Are there any errors shown (I see the error mark in the screenshot - upper right corner in Editor preview)? Does it work if use different layout? Please provide idea.log.
With other layout the situation is same
2018-08-23 17:20:05,013 [ 0] INFO - #com.intellij.idea.Main - ------------------------------------------------------ IDE STARTED ------------------------------------------------------
2018-08-23 17:20:05,154 [ 141] INFO - #com.intellij.idea.Main - IDE: IntelliJ IDEA (build #IU-182.4129.33, 21 Aug 2018 10:05)
2018-08-23 17:20:05,154 [ 141] INFO - #com.intellij.idea.Main - OS: Linux (4.15.0-32-generic, amd64)
2018-08-23 17:20:05,154 [ 141] INFO - #com.intellij.idea.Main - JRE: 1.8.0_152-release-1248-b8 (JetBrains s.r.o)
2018-08-23 17:20:05,154 [ 141] INFO - #com.intellij.idea.Main - JVM: 25.152-b8 (OpenJDK 64-Bit Server VM)
2018-08-23 17:20:05,197 [ 184] INFO - #com.intellij.idea.Main - JVM Args: -Xms128m -Xmx750m -XX:ReservedCodeCacheSize=240m -XX:+UseConcMarkSweepGC -XX:SoftRefLRUPolicyMSPerMB=50 -ea -Dsun.io.useCanonCaches=false -Djava.net.preferIPv4Stack=true -Djdk.http.auth.tunneling.disabledSchemes="" -XX:+HeapDumpOnOutOfMemoryError -XX:-OmitStackTraceInFastThrow -Dawt.useSystemAAFontSettings=lcd -Dsun.java2d.renderer=sun.java2d.marlin.MarlinRenderingEngine -XX:ErrorFile=/home/art/java_error_in_IDEA_%p.log -XX:HeapDumpPath=/home/art/java_error_in_IDEA.hprof -Didea.paths.selector=IntelliJIdea2018.2 -Djb.vmOptionsFile=/home/art/idea-IU-182.4129.33/bin/idea64.vmoptions -Didea.jre.check=true
2018-08-23 17:20:05,197 [ 184] INFO - #com.intellij.idea.Main - ext: /home/art/idea-IU-182.4129.33/jre64/lib/ext: [sunec.jar, localedata.jar, zipfs.jar, jfxrt.jar, sunjce_provider.jar, dnsns.jar, sunpkcs11.jar, jaccess.jar, nashorn.jar, meta-index, cldrdata.jar]
2018-08-23 17:20:05,197 [ 184] INFO - #com.intellij.idea.Main - charsets: JNU=UTF-8 file=UTF-8
2018-08-23 17:20:05,317 [ 304] INFO - #com.intellij.idea.Main - JNA library (64-bit) loaded in 120 ms
2018-08-23 17:20:14,098 [ 9085] INFO - #com.intellij.util.ui.JBUI - System scale factor: 1.0 (IDE-managed HiDPI)
2018-08-23 17:20:14,098 [ 9085] INFO - #com.intellij.util.ui.JBUI - User scale factor: 1.0
2018-08-23 17:20:20,961 [ 15948] INFO - .intellij.idea.IdeaApplication - CPU cores: 4; ForkJoinPool.commonPool: java.util.concurrent.ForkJoinPool@36da90d[Running, parallelism = 3, size = 0, active = 0, running = 0, steals = 0, tasks = 0, submissions = 0]; factory: com.intellij.concurrency.IdeaForkJoinWorkerThreadFactory@540adc55
2018-08-23 17:20:21,214 [ 16201] INFO - .intellij.idea.IdeaApplication - WM detected: Metacity (Marco)
2018-08-23 17:20:22,756 [ 17743] INFO - llij.ide.plugins.PluginManager - 134 plugins initialized in 816 ms
2018-08-23 17:20:22,757 [ 17744] INFO - llij.ide.plugins.PluginManager - Loaded bundled plugins: ASP (0.1), Android Support (10.3.1.2), AngularJS (182.4129.33), Ant Support (1.0), Application Servers View (0.2.0), AspectJ Support (1.2), Bytecode Viewer (0.1), CFML Support (3.53), CSS Support (182.4129.33), CVS Integration (11), Cloud Foundry integration (1.0), CloudBees integration (1.0), CoffeeScript (182.4129.33), Copyright (8.1), Coverage (182.4129.33), Cucumber for Groovy (182.4129.33), Cucumber for Java (182.4129.33), DSM Analysis (1.0.0), Database Tools and SQL (182.4129.33), Eclipse Integration (3.0), EditorConfig (182.4129.33), Emma (182.4129.33), Flash/Flex Support (182.4129.33), FreeMarker support (1.0), GWT Support (1.0), Geronimo Integration (1.0), Gherkin (999.999), Git Integration (8.1), GitHub (182.4129.33), GlassFish Integration (1.0), Google App Engine Integration (1.1.4), Gradle (182.4129.33), Grails (9.0), Groovy (9.0), Guice (8.0), HTML Tools (2.0), HTTP Client (182.4129.33), Haml (182.4129.33), Heroku integration (182.4129.33), Hibernate Support (1.0), I18n for Java (182.4129.33), IDE Settings Sync (182.4129.33), IDEA CORE (182.4129.33), IntelliLang (8.0), J2ME (1.0), JBoss Arquillian Support (1.0), JBoss Drools Support (1.0), JBoss Frameworks Base Support (1.0), JBoss Integration (1.0), JBoss Seam Pageflow Support (1.0), JBoss Seam Pages Support (1.0), JBoss Seam Support (1.0), JBoss jBPM (2.0.0), JSR45 Integration (1.0), JUnit (1.0), Java Bytecode Decompiler (182.4129.33), Java EE: Batch Applications (1.0), Java EE: Bean Validation Support (1.1), Java EE: Contexts and Dependency Injection (1.1), Java EE: EJB, JPA, Servlets (1.0), Java EE: JMS, JSON Processing, Concurrency, Transaction (1.0), Java EE: Java Server Faces (2.2.X.), Java EE: RESTful Web Services (JAX-RS) (1.0), Java EE: Web Services (JAX-WS) (1.9), Java EE: WebSockets (1.0), Java Server Pages (JSP) Integration (1.0), Java Stream Debugger (182.4129.33), JavaFX (1.0), JavaScript Debugger (1.0), JavaScript Intention Power Pack (0.9.4), JavaScript Support (1.0), Jetty Integration (1.0), Kotlin (1.2.51-release-IJ2018.2-1), Less support (182.4129.33), Markdown support (182.4129.33), Maven Integration (182.4129.33), Maven Integration Extension (182.4129.33), Mercurial Integration (10.0), OpenShift integration (1.0), Osmorc (1.4.11), Perforce Integration (2.0), Persistence Frameworks Support (1.0), Playframework Support (1.0), Plugin DevKit (1.0), Properties Support (182.4129.33), Reactor framework support (1.0), Refactor-X (2.01), Remote Hosts Access (0.1), Resin Integration (8.1), SSH Remote Run (0.1), Sass support (182.4129.33), Settings Repository (182.4129.33), Smali Support (1.0), Spring AOP/@AspectJ (1.0), Spring Batch (1.0), Spring Boot (1.0), Spring Data (1.0), Spring Integration Patterns (1.0), Spring MVC (1.0), Spring OSGi (1.0), Spring Security (1.0), Spring Support (1.0), Spring Web Flow (1.0), Spring Web Services (1.0), Spring WebSocket (1.0), Spy-js (182.4129.33), Struts 1.x (2.0), Struts 2 (1.0), Stylus support (999.999), Subversion Integration (1.1), TFS Integration (999.999), Tapestry support (1.0), Task Management (1.0), Terminal (0.1), TestNG-J (8.0), Thymeleaf (1.0), Time Tracking (1.0), Tomcat and TomEE Integration (1.0), UI Designer (182.4129.33), UML Support (1.0), Vaadin Support (1.0), Velocity support (1.0), W3C Validators (2.0), WebLogic Integration (1.0), WebSphere Integration (1.0), XPathView + XSLT Support (4), XSLT-Debugger (1.4), YAML (182.4129.33), ZKM-Unscramble (1.0), dmServer Support (0.9.5), tslint (182.4129.33)
2018-08-23 17:20:22,758 [ 17745] INFO - llij.ide.plugins.PluginManager - Loaded custom plugins: IDE Features Trainer (0.8.62), IdeaVim (0.49), LiveEdit (182.3569.4)
2018-08-23 17:20:34,204 [ 29191] INFO - cloudConfig.CloudConfigManager - === Exit: JBA_NOT_FOUND ===
2018-08-23 17:20:34,618 [ 29605] INFO - ellij.util.io.PagedFileStorage - lower=100; upper=500; buffer=10; max=705
2018-08-23 17:20:34,857 [ 29844] INFO - pl.local.NativeFileWatcherImpl - Starting file watcher: /home/art/idea-IU-182.4129.33/bin/fsnotifier64
2018-08-23 17:20:34,924 [ 29911] INFO - pl.local.NativeFileWatcherImpl - Native file watcher is operational.
2018-08-23 17:20:36,514 [ 31501] INFO - tellij.openapi.util.IconLoader - replace '/nodes/newFolder.png' with 'AllIcons.Nodes.Folder'
2018-08-23 17:20:43,337 [ 38324] INFO - til.net.ssl.CertificateManager - Default SSL context initialized
2018-08-23 17:20:43,795 [ 38782] INFO - rains.ide.BuiltInServerManager - built-in server started, port 63342
2018-08-23 17:20:44,256 [ 39243] INFO - gs.impl.UpdateCheckerComponent - channel: release
2018-08-23 17:20:47,288 [ 42275] INFO - j.ide.ui.OptionsTopHitProvider - 4523 ms spent to cache options in application
2018-08-23 17:20:47,289 [ 42276] INFO - .openapi.application.Preloader - com.intellij.ide.ui.OptionsTopHitProvider$Activity took 4523 ms
2018-08-23 17:20:51,798 [ 46785] INFO - il.indexing.FileBasedIndexImpl - Index exts enumerated:6211, number of extensions:77
2018-08-23 17:20:52,773 [ 47760] INFO - il.indexing.FileBasedIndexImpl - Index scheduled:975
2018-08-23 17:20:54,682 [ 49669] INFO - tellij.psi.stubs.StubIndexImpl - All stub exts enumerated:1836, number of extensions:111
2018-08-23 17:20:54,683 [ 49670] INFO - tellij.psi.stubs.StubIndexImpl - stub exts update scheduled:0
2018-08-23 17:21:09,088 [ 64075] INFO - plication.impl.ApplicationImpl - 103 application components initialized in 47165ms
2018-08-23 17:21:09,118 [ 64105] INFO - .intellij.idea.IdeaApplication - App initialization took 69653 ms
2018-08-23 17:21:11,002 [ 65989] INFO - m.intellij.ui.mac.touchbar.NST - OS doesn't support touchbar, skip nst loading
2018-08-23 17:21:16,662 [ 71649] INFO - ellij.project.impl.ProjectImpl - 20 project components initialized in 4214 ms
2018-08-23 17:21:23,878 [ 78865] INFO - pl$FileIndexDataInitialization - Initialization done:31105
2018-08-23 17:21:32,490 [ 87477] INFO - exImpl$StubIndexInitialization - Initialization done:8611
2018-08-23 17:21:32,894 [ 87881] INFO - com.intellij.ide.ui.UISettings - Loaded: fontSize=12, fontScale=1.0; restored: fontSize=12, fontScale=1.0
2018-08-23 17:21:43,500 [ 98487] INFO - .openapi.application.Preloader - com.intellij.openapi.actionSystem.impl.ActionPreloader took 56209 ms
2018-08-23 17:21:43,612 [ 98599] INFO - ellij.project.impl.ProjectImpl - 190 project components initialized in 24171 ms
2018-08-23 17:21:45,664 [ 100651] INFO - le.impl.ModuleManagerComponent - 2 module(s) loaded in 2050 ms
2018-08-23 17:21:48,163 [ 103150] INFO - j.ide.script.IdeStartupScripts - 0 startup script(s) found
2018-08-23 17:21:49,209 [ 104196] INFO - om.intellij.util.ProfilingUtil - Profiling agent is not enabled. Add -agentlib:yjpagent to idea.vmoptions if necessary to profile IDEA.
2018-08-23 17:21:50,218 [ 105205] INFO - .openapi.application.Preloader - com.intellij.ide.ui.search.SearchableOptionPreloader took 6717 ms
2018-08-23 17:21:54,418 [ 109405] INFO - .openapi.application.Preloader - com.intellij.codeInsight.completion.CompletionPreloader took 4198 ms
2018-08-23 17:21:54,533 [ 109520] INFO - .openapi.application.Preloader - com.intellij.ide.actions.GotoClassPresentationUpdater took 115 ms
2018-08-23 17:21:57,966 [ 112953] INFO - ing.migration.MigrationManager - Adding lesson states from previous version (0.7.49) of trainingPlugin / IDE Features Trainer from xml file: trainingPlugin
2018-08-23 17:22:00,664 [ 115651] INFO - tartup.impl.StartupManagerImpl - EditorHistoryManagerStartUpActivity run in 992ms under project opening modal progress
2018-08-23 17:22:02,201 [ 117188] INFO - rojectCodeStyleSettingsManager - Initialized from default code style settings.
2018-08-23 17:22:02,233 [ 117220] INFO - .diagnostic.PerformanceWatcher - Pushing properties took 3085ms; general responsiveness: ok; EDT responsiveness: ok
2018-08-23 17:22:10,210 [ 125197] INFO - tartup.impl.StartupManagerImpl - OpenFilesActivity run in 9497ms under project opening modal progress
2018-08-23 17:22:10,589 [ 125576] INFO - ge.ExternalProjectsDataStorage - Loaded external projects data in 88 millis
2018-08-23 17:22:10,644 [ 125631] INFO - tartup.impl.StartupManagerImpl - ExternalSystemStartupActivity run in 349ms under project opening modal progress
2018-08-23 17:22:10,851 [ 125838] INFO - tartup.impl.StartupManagerImpl - ReprocessContentRootDataActivity run in 204ms under project opening modal progress
2018-08-23 17:22:11,085 [ 126072] INFO - tartup.impl.StartupManagerImpl - GrailsApplicationManagerRefresher run in 126ms under project opening modal progress
2018-08-23 17:22:11,230 [ 126217] INFO - tartup.impl.StartupManagerImpl - LiveEditManager run in 143ms under project opening modal progress
2018-08-23 17:22:11,233 [ 126220] INFO - .diagnostic.PerformanceWatcher - Post-startup activities under progress took 12431ms; general responsiveness: ok; EDT responsiveness: 3/12 sluggish, 3/12 very slow
2018-08-23 17:22:14,641 [ 129628] INFO - .diagnostic.PerformanceWatcher - Indexable file iteration took 12405ms; general responsiveness: ok; EDT responsiveness: 2/13 sluggish, 7/13 very slow
2018-08-23 17:22:15,193 [ 130180] INFO - j.ide.ui.OptionsTopHitProvider - 1088 ms spent on EDT to cache options in application
2018-08-23 17:22:15,213 [ 130200] INFO - tartup.impl.StartupManagerImpl - /home/art/IntelliJIDEAProjects/MyApplication8/.idea case-sensitivity: expected=true actual=true
2018-08-23 17:22:15,240 [ 130227] INFO - pl.projectlevelman.NewMappings - VCS Root: [] - [<Project>]
2018-08-23 17:22:15,538 [ 130525] INFO - Json.PackageJsonUpdateNotifier - processPackageJsonFiles []
2018-08-23 17:22:16,476 [ 131463] INFO - j.ide.ui.OptionsTopHitProvider - 940 ms spent to cache options in project
2018-08-23 17:22:16,476 [ 131463] INFO - tartup.impl.StartupManagerImpl - Some post-startup activities freeze UI for noticeable time. Please consider making them DumbAware to do them in background under modal progress, or just making them faster to speed up project opening.
2018-08-23 17:22:16,476 [ 131463] INFO - tartup.impl.StartupManagerImpl - Activity run in 940ms on UI thread
2018-08-23 17:22:17,016 [ 132003] INFO - tartup.impl.StartupManagerImpl - InitLogStartupActivity run in 126ms on UI thread
2018-08-23 17:22:17,152 [ 132139] INFO - tartup.impl.StartupManagerImpl - InitJSchLoggerStartupActivity run in 136ms on UI thread
2018-08-23 17:22:17,153 [ 132140] INFO - cloudConfig.CloudConfigManager - === StatusBar ignored ===
2018-08-23 17:22:17,435 [ 132422] INFO - tartup.impl.StartupManagerImpl - PackageJsonForLintersConfigChangeTracker run in 133ms on UI thread
2018-08-23 17:22:18,415 [ 133402] INFO - tartup.impl.StartupManagerImpl - GradleJvmStartupActivity run in 970ms on UI thread
2018-08-23 17:22:18,775 [ 133762] INFO - tor.impl.FileEditorManagerImpl - Project opening took 59590 ms
2018-08-23 17:22:19,606 [ 134593] INFO - j.ide.ui.OptionsTopHitProvider - 579 ms spent on EDT to cache options in project
2018-08-23 17:22:19,712 [ 134699] INFO - e.project.sync.GradleSyncState - Started sync with Gradle for project 'MyApplication8'.
2018-08-23 17:22:21,430 [ 136417] INFO - s.plugins.gradle.GradleManager - Instructing gradle to use java from /usr/lib/jvm/java-8-oracle
2018-08-23 17:22:21,433 [ 136420] INFO - s.plugins.gradle.GradleManager - Instructing gradle to use java from /usr/lib/jvm/java-8-oracle
2018-08-23 17:22:24,862 [ 139849] INFO - tartup.impl.StartupManagerImpl - SpringBootApplicationRunDashboardChecker run in 290ms on UI thread
2018-08-23 17:22:25,211 [ 140198] INFO - CompilerWorkspaceConfiguration - Available processors: 4
2018-08-23 17:22:29,177 [ 144164] INFO - s.plugins.gradle.GradleManager - Instructing gradle to use java from /usr/lib/jvm/java-8-oracle
2018-08-23 17:22:29,191 [ 144178] INFO - ScriptTemplatesProviders - [kts] loading script definitions [org.gradle.kotlin.dsl.KotlinInitScript] using cp: /home/art/.gradle/wrapper/dists/gradle-4.4-all/9br9xq1tocpiv8o6njlyu5op1/gradle-4.4/lib/gradle-kotlin-dsl-tooling-models-0.13.1.jar:/home/art/.gradle/wrapper/dists/gradle-4.4-all/9br9xq1tocpiv8o6njlyu5op1/gradle-4.4/lib/gradle-kotlin-dsl-tooling-builders-0.13.1.jar:/home/art/.gradle/wrapper/dists/gradle-4.4-all/9br9xq1tocpiv8o6njlyu5op1/gradle-4.4/lib/gradle-core-4.4.jar:/home/art/.gradle/wrapper/dists/gradle-4.4-all/9br9xq1tocpiv8o6njlyu5op1/gradle-4.4/lib/gradle-kotlin-dsl-0.13.1.jar:/home/art/.gradle/wrapper/dists/gradle-4.4-all/9br9xq1tocpiv8o6njlyu5op1/gradle-4.4/lib/gradle-core-api-4.4.jar:/home/art/.gradle/wrapper/dists/gradle-4.4-all/9br9xq1tocpiv8o6njlyu5op1/gradle-4.4/lib/kotlin-compiler-embeddable-1.1.51.jar
2018-08-23 17:22:29,194 [ 144181] WARN - ScriptTemplatesProviders - [kts] cannot load script definition class org.gradle.kotlin.dsl.KotlinInitScript
java.lang.ClassNotFoundException: org.gradle.kotlin.dsl.KotlinInitScript
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at org.jetbrains.kotlin.idea.core.script.ScriptDefinitionsManagerKt.loadDefinitionsFromTemplates(ScriptDefinitionsManager.kt:176)
at org.jetbrains.kotlin.idea.core.script.GradleScriptDefinitionsContributor.doLoadGradleTemplates(GradleScriptTemplateProvider.kt:204)
at org.jetbrains.kotlin.idea.core.script.GradleScriptDefinitionsContributor.loadGradleTemplates(GradleScriptTemplateProvider.kt:148)
at org.jetbrains.kotlin.idea.core.script.GradleScriptDefinitionsContributor.loadDefinitions(GradleScriptTemplateProvider.kt:100)
at org.jetbrains.kotlin.idea.core.script.GradleScriptDefinitionsContributor.getDefinitions(GradleScriptTemplateProvider.kt:88)
at org.jetbrains.kotlin.idea.core.script.ScriptDefinitionsManager.safeGetDefinitions(ScriptDefinitionsManager.kt:138)
at org.jetbrains.kotlin.idea.core.script.ScriptDefinitionsManager.reloadScriptDefinitions(ScriptDefinitionsManager.kt:102)
at org.jetbrains.kotlin.idea.core.script.ScriptDefinitionsManager.getCurrentDefinitions(ScriptDefinitionsManager.kt:88)
at org.jetbrains.kotlin.script.LazyScriptDefinitionProvider.getCachedDefinitions(KotlinScriptDefinitionProvider.kt:63)
at org.jetbrains.kotlin.script.LazyScriptDefinitionProvider.findScriptDefinition(KotlinScriptDefinitionProvider.kt:81)
at org.jetbrains.kotlin.script.KotlinScriptDefinitionProviderKt.findScriptDefinition(KotlinScriptDefinitionProvider.kt:41)
at org.jetbrains.kotlin.script.KotlinScriptDefinitionProviderKt.getScriptDefinition(KotlinScriptDefinitionProvider.kt:46)
at org.jetbrains.kotlin.idea.core.script.dependencies.KotlinScriptResolveScopeProvider.getResolveScope(KotlinScriptResolveScopeProvider.kt:35)
at com.intellij.psi.impl.file.impl.ResolveScopeManagerImpl.lambda$new$0(ResolveScopeManagerImpl.java:44)
at com.intellij.util.containers.ConcurrentFactoryMap$4.create(ConcurrentFactoryMap.java:223)
at com.intellij.util.containers.ConcurrentFactoryMap.get(ConcurrentFactoryMap.java:59)
at com.intellij.psi.impl.file.impl.ResolveScopeManagerImpl.getResolveScopeFromProviders(ResolveScopeManagerImpl.java:62)
at com.intellij.psi.impl.file.impl.ResolveScopeManagerImpl.getResolveScope(ResolveScopeManagerImpl.java:124)
at com.intellij.psi.impl.compiled.ClsJavaCodeReferenceElementImpl.resolveElement(ClsJavaCodeReferenceElementImpl.java:256)
at com.intellij.psi.impl.compiled.ClsJavaCodeReferenceElementImpl.advancedResolveImpl(ClsJavaCodeReferenceElementImpl.java:128)
at com.intellij.psi.impl.compiled.ClsJavaCodeReferenceElementImpl.access$000(ClsJavaCodeReferenceElementImpl.java:43)
at com.intellij.psi.impl.compiled.ClsJavaCodeReferenceElementImpl$Resolver.resolve(ClsJavaCodeReferenceElementImpl.java:121)
at com.intellij.psi.impl.compiled.ClsJavaCodeReferenceElementImpl$Resolver.resolve(ClsJavaCodeReferenceElementImpl.java:115)
at com.intellij.psi.impl.source.resolve.ResolveCache.lambda$resolveWithCaching$1(ResolveCache.java:203)
at com.intellij.openapi.util.RecursionManager$2.doPreventingRecursion(RecursionManager.java:113)
at com.intellij.psi.impl.source.resolve.ResolveCache.resolveWithCaching(ResolveCache.java:202)
at com.intellij.psi.impl.compiled.ClsJavaCodeReferenceElementImpl.multiResolve(ClsJavaCodeReferenceElementImpl.java:223)
at com.intellij.psi.impl.compiled.ClsJavaCodeReferenceElementImpl.advancedResolve(ClsJavaCodeReferenceElementImpl.java:213)
at com.intellij.psi.impl.source.PsiClassReferenceType.resolveGenerics(PsiClassReferenceType.java:191)
at com.intellij.psi.impl.TypeCorrector.correctType(TypeCorrector.java:41)
at com.intellij.psi.impl.PsiClassImplUtil.correctType(PsiClassImplUtil.java:725)
at com.intellij.psi.impl.ScopedClassHierarchy.visitType(ScopedClassHierarchy.java:82)
at com.intellij.psi.impl.ScopedClassHierarchy.visitType(ScopedClassHierarchy.java:84)
at com.intellij.psi.impl.ScopedClassHierarchy.getSuperClassSubstitutor(ScopedClassHierarchy.java:115)
at com.intellij.psi.impl.JavaClassSupersImpl.getSuperSubstitutorWithCaching(JavaClassSupersImpl.java:111)
at com.intellij.psi.impl.JavaClassSupersImpl.getSuperClassSubstitutor(JavaClassSupersImpl.java:71)
at com.intellij.psi.impl.InheritanceImplUtil.isInheritor(InheritanceImplUtil.java:41)
at com.intellij.psi.impl.source.PsiClassImpl.isInheritor(PsiClassImpl.java:617)
at com.intellij.psi.util.InheritanceUtil.isInheritorOrSelf(InheritanceUtil.java:43)
at com.intellij.psi.impl.ElementPresentationUtil.getClassKindImpl(ElementPresentationUtil.java:132)
at com.intellij.psi.impl.ElementPresentationUtil.lambda$getClassKind$0(ElementPresentationUtil.java:106)
at com.intellij.psi.impl.PsiCachedValueImpl.doCompute(PsiCachedValueImpl.java:49)
at com.intellij.util.CachedValueBase.getValueWithLock(CachedValueBase.java:222)
at com.intellij.psi.impl.PsiCachedValue.getValueWithLock(PsiCachedValue.java:60)
at com.intellij.psi.impl.PsiCachedValueImpl.getValue(PsiCachedValueImpl.java:38)
at com.intellij.psi.impl.ElementPresentationUtil.getClassKind(ElementPresentationUtil.java:109)
at com.intellij.psi.impl.ElementPresentationUtil.getFlags(ElementPresentationUtil.java:52)
at com.intellij.psi.impl.ElementPresentationUtil.createLayeredIcon(ElementPresentationUtil.java:64)
at com.intellij.psi.impl.PsiClassImplUtil.lambda$static$0(PsiClassImplUtil.java:259)
at com.intellij.ui.IconDeferrerImpl.deferImpl(IconDeferrerImpl.java:87)
at com.intellij.ui.IconDeferrerImpl.defer(IconDeferrerImpl.java:77)
at com.intellij.psi.impl.PsiClassImplUtil.getClassIcon(PsiClassImplUtil.java:279)
at com.intellij.psi.impl.PsiClassImplUtil.getClassIcon(PsiClassImplUtil.java:266)
at com.intellij.psi.impl.source.PsiClassImpl.getElementIcon(PsiClassImpl.java:632)
at com.intellij.psi.impl.ElementBase.doComputeIconNow(ElementBase.java:111)
at com.intellij.psi.impl.ElementBase.lambda$computeIconNow$2(ElementBase.java:103)
at com.intellij.util.AstLoadingFilter.disableTreeLoading(AstLoadingFilter.java:126)
at com.intellij.util.AstLoadingFilter.disableTreeLoading(AstLoadingFilter.java:115)
at com.intellij.psi.impl.ElementBase.computeIconNow(ElementBase.java:103)
at com.intellij.psi.impl.ElementBase.lambda$static$0(ElementBase.java:47)
at com.intellij.ui.IconDeferrerImpl.deferImpl(IconDeferrerImpl.java:87)
at com.intellij.ui.IconDeferrerImpl.defer(IconDeferrerImpl.java:77)
at com.intellij.psi.impl.ElementBase.computeIcon(ElementBase.java:95)
at com.intellij.psi.impl.ElementBase.getIcon(ElementBase.java:74)
at com.intellij.ide.JavaFileIconPatcher.patchIcon(JavaFileIconPatcher.java:56)
at com.intellij.util.IconUtil.lambda$static$0(IconUtil.java:149)
at com.intellij.ui.DeferredIconImpl.evaluate(DeferredIconImpl.java:282)
at com.intellij.ui.DeferredIconImpl.lambda$null$0(DeferredIconImpl.java:167)
at com.intellij.ui.IconDeferrerImpl.evaluateDeferred(IconDeferrerImpl.java:114)
at com.intellij.ui.DeferredIconImpl.lambda$null$1(DeferredIconImpl.java:167)
at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1161)
at com.intellij.openapi.progress.util.ProgressIndicatorUtils.lambda$runInReadActionWithWriteActionPriority$0(ProgressIndicatorUtils.java:70)
at com.intellij.openapi.progress.util.ProgressIndicatorUtils.lambda$runWithWriteActionPriority$1(ProgressIndicatorUtils.java:123)
at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$1(CoreProgressManager.java:157)
at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:580)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:525)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:85)
at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:144)
at com.intellij.openapi.progress.util.ProgressIndicatorUtils.runWithWriteActionPriority(ProgressIndicatorUtils.java:112)
at com.intellij.openapi.progress.util.ProgressIndicatorUtils.runInReadActionWithWriteActionPriority(ProgressIndicatorUtils.java:70)
at com.intellij.openapi.progress.util.ProgressIndicatorUtils.runInReadActionWithWriteActionPriority(ProgressIndicatorUtils.java:91)
at com.intellij.ui.DeferredIconImpl.lambda$paintIcon$4(DeferredIconImpl.java:166)
at com.intellij.util.concurrency.BoundedTaskExecutor.doRun(BoundedTaskExecutor.java:226)
at com.intellij.util.concurrency.BoundedTaskExecutor.access$100(BoundedTaskExecutor.java:26)
at com.intellij.util.concurrency.BoundedTaskExecutor$2$1.run(BoundedTaskExecutor.java:199)
at com.intellij.util.ConcurrencyUtil.runUnderThreadName(ConcurrencyUtil.java:229)
at com.intellij.util.concurrency.BoundedTaskExecutor$2.run(BoundedTaskExecutor.java:193)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
2018-08-23 17:22:29,198 [ 144185] INFO - s.plugins.gradle.GradleManager - Instructing gradle to use java from /usr/lib/jvm/java-8-oracle
2018-08-23 17:22:29,199 [ 144186] INFO - ScriptTemplatesProviders - [kts] loading script definitions [org.gradle.kotlin.dsl.KotlinSettingsScript] using cp: /home/art/.gradle/wrapper/dists/gradle-4.4-all/9br9xq1tocpiv8o6njlyu5op1/gradle-4.4/lib/gradle-kotlin-dsl-tooling-models-0.13.1.jar:/home/art/.gradle/wrapper/dists/gradle-4.4-all/9br9xq1tocpiv8o6njlyu5op1/gradle-4.4/lib/gradle-kotlin-dsl-tooling-builders-0.13.1.jar:/home/art/.gradle/wrapper/dists/gradle-4.4-all/9br9xq1tocpiv8o6njlyu5op1/gradle-4.4/lib/gradle-core-4.4.jar:/home/art/.gradle/wrapper/dists/gradle-4.4-all/9br9xq1tocpiv8o6njlyu5op1/gradle-4.4/lib/gradle-kotlin-dsl-0.13.1.jar:/home/art/.gradle/wrapper/dists/gradle-4.4-all/9br9xq1tocpiv8o6njlyu5op1/gradle-4.4/lib/gradle-core-api-4.4.jar:/home/art/.gradle/wrapper/dists/gradle-4.4-all/9br9xq1tocpiv8o6njlyu5op1/gradle-4.4/lib/kotlin-compiler-embeddable-1.1.51.jar
2018-08-23 17:22:29,417 [ 144404] INFO - s.plugins.gradle.GradleManager - Instructing gradle to use java from /usr/lib/jvm/java-8-oracle
2018-08-23 17:22:29,418 [ 144405] INFO - ScriptTemplatesProviders - [kts] loading script definitions [org.gradle.kotlin.dsl.KotlinBuildScript] using cp: /home/art/.gradle/wrapper/dists/gradle-4.4-all/9br9xq1tocpiv8o6njlyu5op1/gradle-4.4/lib/gradle-kotlin-dsl-tooling-models-0.13.1.jar:/home/art/.gradle/wrapper/dists/gradle-4.4-all/9br9xq1tocpiv8o6njlyu5op1/gradle-4.4/lib/gradle-kotlin-dsl-tooling-builders-0.13.1.jar:/home/art/.gradle/wrapper/dists/gradle-4.4-all/9br9xq1tocpiv8o6njlyu5op1/gradle-4.4/lib/gradle-core-4.4.jar:/home/art/.gradle/wrapper/dists/gradle-4.4-all/9br9xq1tocpiv8o6njlyu5op1/gradle-4.4/lib/gradle-kotlin-dsl-0.13.1.jar:/home/art/.gradle/wrapper/dists/gradle-4.4-all/9br9xq1tocpiv8o6njlyu5op1/gradle-4.4/lib/gradle-core-api-4.4.jar:/home/art/.gradle/wrapper/dists/gradle-4.4-all/9br9xq1tocpiv8o6njlyu5op1/gradle-4.4/lib/kotlin-compiler-embeddable-1.1.51.jar
2018-08-23 17:22:29,770 [ 144757] INFO - ScriptTemplatesProviders - [kts] loading script definitions [] using cp:
2018-08-23 17:22:29,994 [ 144981] INFO - xecution.GradleExecutionHelper - Passing command-line args to Gradle Tooling API: -Didea.version=2018.2.2 -Didea.resolveSourceSetDependencies=true -Djava.awt.headless=true -Pandroid.injected.build.model.only=true -Pandroid.injected.build.model.only.advanced=true -Pandroid.injected.invoked.from.ide=true -Pandroid.injected.build.model.only.versioned=3 -Pandroid.builder.sdkDownload=false --init-script /tmp/ijinit.gradle
2018-08-23 17:22:52,666 [ 167653] INFO - System.util.ExternalSystemUtil - External project [/home/art/IntelliJIDEAProjects/MyApplication8] resolution task executed in 31741 ms.
2018-08-23 17:22:52,671 [ 167658] INFO - e.project.sync.GradleSyncState - Started setup of project 'MyApplication8'.
2018-08-23 17:22:54,177 [ 169164] INFO - pl.ProjectRootManagerComponent - project roots have changed
2018-08-23 17:22:54,234 [ 169221] INFO - util.EmbeddedDistributionPaths - Looking for embedded Maven repo at '/home/prebuilts/tools/common/offline-m2'
2018-08-23 17:22:54,242 [ 169229] INFO - ugin.AndroidPluginGeneration$1 - 'gradle' plugin missing from the offline Maven repo, will use default 3.1.0
2018-08-23 17:22:54,242 [ 169229] INFO - etup.post.PluginVersionUpgrade - Gradle model version: 3.1.0, recommended version for IDE: 3.1.0
2018-08-23 17:22:54,243 [ 169230] INFO - util.EmbeddedDistributionPaths - Looking for embedded Maven repo at '/home/prebuilts/tools/common/offline-m2'
2018-08-23 17:22:54,243 [ 169230] INFO - ugin.AndroidPluginGeneration$1 - 'gradle' plugin missing from the offline Maven repo, will use default 3.1.0
2018-08-23 17:22:54,243 [ 169230] INFO - util.EmbeddedDistributionPaths - Looking for embedded Maven repo at '/home/prebuilts/tools/common/offline-m2'
2018-08-23 17:22:54,243 [ 169230] INFO - ugin.AndroidPluginGeneration$1 - 'gradle' plugin missing from the offline Maven repo, will use default 3.1.0
2018-08-23 17:22:54,373 [ 169360] INFO - ild.invoker.GradleBuildInvoker - About to execute Gradle tasks: [:app:generateDebugSources]
2018-08-23 17:22:54,458 [ 169445] INFO - .diagnostic.PerformanceWatcher - Pushing properties took 9ms; general responsiveness: ok; EDT responsiveness: ok
2018-08-23 17:22:54,552 [ 169539] INFO - s.plugins.gradle.GradleManager - Instructing gradle to use java from /usr/lib/jvm/java-8-oracle
2018-08-23 17:22:54,555 [ 169542] INFO - e.project.sync.GradleSyncState - Gradle sync finished in 34s 842ms
2018-08-23 17:22:54,612 [ 169599] INFO - ild.invoker.GradleBuildInvoker - Build command line options: [--configure-on-demand, -Pandroid.injected.invoked.from.ide=true, -Pandroid.injected.generateSourcesOnly=true]
2018-08-23 17:22:54,672 [ 169659] INFO - xecution.GradleExecutionHelper - Passing command-line args to Gradle Tooling API: --configure-on-demand -Pandroid.injected.invoked.from.ide=true -Pandroid.injected.generateSourcesOnly=true
2018-08-23 17:22:54,800 [ 169787] INFO - .diagnostic.PerformanceWatcher - Indexable file iteration took 342ms; general responsiveness: ok; EDT responsiveness: ok
2018-08-23 17:22:54,968 [ 169955] INFO - pl.ProjectRootManagerComponent - project roots have changed
2018-08-23 17:22:55,115 [ 170102] INFO - .diagnostic.PerformanceWatcher - Pushing properties took 6ms; general responsiveness: ok; EDT responsiveness: ok
2018-08-23 17:22:55,490 [ 170477] INFO - .diagnostic.PerformanceWatcher - Indexable file iteration took 372ms; general responsiveness: ok; EDT responsiveness: ok
2018-08-23 17:22:56,664 [ 171651] INFO - ild.invoker.GradleBuildInvoker - Gradle build finished in 2 s 107 ms
2018-08-23 17:22:56,770 [ 171757] INFO - pl.ProjectRootManagerComponent - project roots have changed
2018-08-23 17:22:56,864 [ 171851] INFO - .diagnostic.PerformanceWatcher - Pushing properties took 5ms; general responsiveness: ok; EDT responsiveness: ok
2018-08-23 17:22:56,953 [ 171940] INFO - indexing.UnindexedFilesUpdater - Unindexed files update canceled
2018-08-23 17:22:56,956 [ 171943] INFO - pl.ProjectRootManagerComponent - project roots have changed
2018-08-23 17:22:57,001 [ 171988] INFO - .diagnostic.PerformanceWatcher - Pushing properties took 8ms; general responsiveness: ok; EDT responsiveness: ok
2018-08-23 17:22:57,247 [ 172234] INFO - .diagnostic.PerformanceWatcher - Indexable file iteration took 246ms; general responsiveness: ok; EDT responsiveness: ok
2018-08-23 17:23:00,148 [ 175135] INFO - attrs.AttributeDefinitionsImpl - Found tag with unknown parent: AndroidManifest.AndroidManifestSupportsInput
2018-08-23 17:23:00,148 [ 175135] INFO - attrs.AttributeDefinitionsImpl - Found tag with unknown parent: AndroidManifest.AndroidManifestCompatibleScreens
I found the solution int this video https://www.youtube.com/watch?v=IlsuFTnkHAI !
https://stackoverflow.com/questions/44449275/failed-to-load-appcompat-actionbar-with-unknown-error-in-android-studio
Thanks!