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name

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Run Button Grayed out: Android Studio

Why is the run button always grayed out in android studio after I had some errors. I need to reboot my android studio every time to run it again. I am sure that I am missing something :P

Run Bar

Run Button

I also get an error right now :)

Already disposed: Project (Disposed): Already disposed: Project (Disposed)
java.lang.AssertionError: Already disposed: Project (Disposed)
    at com.intellij.openapi.components.impl.ComponentManagerImpl.getComponent(ComponentManagerImpl.java:186)
    at com.intellij.psi.PsiDocumentManager.getInstance(PsiDocumentManager.java:41)
    at com.intellij.psi.SingleRootFileViewProvider.getLastCommittedText(SingleRootFileViewProvider.java:521)
    at com.intellij.psi.SingleRootFileViewProvider.access$400(SingleRootFileViewProvider.java:63)
    at com.intellij.psi.SingleRootFileViewProvider$DocumentContent.getText(SingleRootFileViewProvider.java:537)
    at com.intellij.psi.SingleRootFileViewProvider.getContents(SingleRootFileViewProvider.java:347)
    at com.intellij.psi.impl.source.PsiFileImpl.loadTreeElement(PsiFileImpl.java:199)
    at com.intellij.psi.impl.source.PsiFileImpl.calcTreeElement(PsiFileImpl.java:776)
    at com.intellij.psi.impl.source.PsiFileImpl.getFirstChild(PsiFileImpl.java:787)
    at com.intellij.psi.impl.source.xml.XmlFileImpl.getDocument(XmlFileImpl.java:47)
    at com.intellij.psi.impl.source.xml.XmlFileImpl.getRootTag(XmlFileImpl.java:58)
    at com.android.tools.idea.rendering.LocalResourceRepository.getViewTag(LocalResourceRepository.java:323)
    at org.jetbrains.android.inspections.lint.IntellijViewTypeDetector.getViewTags(IntellijViewTypeDetector.java:42)
    at com.android.tools.lint.checks.ViewTypeDetector.visitMethod(ViewTypeDetector.java:213)
    at com.android.tools.lint.client.api.JavaVisitor$DelegatingJavaVisitor.visitMethodInvocation(JavaVisitor.java:1189)
    at lombok.ast.MethodInvocation.accept(MethodInvocation.java:114)
    at lombok.ast.Cast.accept(Cast.java:94)
    at lombok.ast.BinaryExpression.accept(BinaryExpression.java:131)
    at lombok.ast.ExpressionStatement.accept(ExpressionStatement.java:63)
    at lombok.ast.Block.accept(Block.java:106)
    at lombok.ast.MethodDeclaration.accept(MethodDeclaration.java:240)
    at lombok.ast.NormalTypeBody.accept(NormalTypeBody.java:57)
    at lombok.ast.ClassDeclaration.accept(ClassDeclaration.java:239)
    at lombok.ast.CompilationUnit.accept(CompilationUnit.java:83)
    at com.android.tools.lint.client.api.JavaVisitor.visitFile(JavaVisitor.java:217)
    at com.android.tools.lint.client.api.LintDriver.checkIndividualJavaFiles(LintDriver.java:1652)
    at com.android.tools.lint.client.api.LintDriver.runFileDetectors(LintDriver.java:986)
    at com.android.tools.lint.client.api.LintDriver.checkProject(LintDriver.java:858)
    at com.android.tools.lint.client.api.LintDriver.analyze(LintDriver.java:425)
    at com.android.tools.lint.client.api.LintDriver.analyze(LintDriver.java:369)
    at org.jetbrains.android.inspections.lint.AndroidLintExternalAnnotator.doAnnotate(AndroidLintExternalAnnotator.java:146)
    at org.jetbrains.android.inspections.lint.AndroidLintExternalAnnotator.doAnnotate(AndroidLintExternalAnnotator.java:56)
    at com.intellij.codeInsight.daemon.impl.ExternalToolPass.doAnnotate(ExternalToolPass.java:222)
    at com.intellij.codeInsight.daemon.impl.ExternalToolPass.access$400(ExternalToolPass.java:43)
    at com.intellij.codeInsight.daemon.impl.ExternalToolPass$2.run(ExternalToolPass.java:133)
    at com.intellij.codeInsight.daemon.impl.ExternalToolPass$3.run(ExternalToolPass.java:170)
    at com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:320)
    at com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:310)
    at com.intellij.util.ui.update.MergingUpdateQueue$2.run(MergingUpdateQueue.java:254)
    at com.intellij.util.ui.update.MergingUpdateQueue.flush(MergingUpdateQueue.java:269)
    at com.intellij.util.ui.update.MergingUpdateQueue.flush(MergingUpdateQueue.java:227)
    at com.intellij.util.ui.update.MergingUpdateQueue.run(MergingUpdateQueue.java:217)
    at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:238)
    at com.intellij.util.Alarm$Request$1.run(Alarm.java:327)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at com.intellij.util.concurrency.QueueProcessor$RunnableConsumer.consume(QueueProcessor.java:298)
    at com.intellij.util.concurrency.QueueProcessor$RunnableConsumer.consume(QueueProcessor.java:295)
    at com.intellij.util.concurrency.QueueProcessor$2$1.run(QueueProcessor.java:110)
    at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:238)
    at com.intellij.util.concurrency.QueueProcessor$2.consume(QueueProcessor.java:107)
    at com.intellij.util.concurrency.QueueProcessor$2.consume(QueueProcessor.java:104)
    at com.intellij.util.concurrency.QueueProcessor$3$1.run(QueueProcessor.java:215)
    at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:238)
    at com.intellij.util.concurrency.QueueProcessor$3.run(QueueProcessor.java:212)
    at com.intellij.openapi.application.impl.ApplicationImpl$8.run(ApplicationImpl.java:419)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:744)
    at com.intellij.openapi.application.impl.ApplicationImpl$1$1.run(ApplicationImpl.java:149)

You should initially configure the application. Click the edit configuration in the combo box left to run button then: enter image description here

Last step do:

enter image description here

  • 34
Reply Report

If you've made major changes to your project structure, it sometimes takes restarting Android Studio to regain the ability to Run your project. Worked for me.

  • 12
Reply Report
      • 2
    • I have made some major changes and wandering around to enable that run button. At last this answer solved it. But did not require to restart the Android Studio. Just reopened the project. File > Close Project

Happened to me when my module settings weren't right. Go to module settings by right clicking the project in the left pane then make sure the target is set to android-23 or whatever version you want

  • 4
Reply Report

There are many solutions related to this problem.

Goto setting->plugins->uncheck the red one's and apply. Then again mark them (check them ) and apply .

Restart your android studio , it will work.

  • 2
Reply Report

I fixed this issue by re-importing my Gradle Project. For me, everything was greyed out(Run/Debug/Build), and re-starting Android Studio was not enough to fix this issue.

I did:

File -> Re-Import Gradle Project

After this, the Gradle Sync operation began, and all the buttons in the Android Studio IDE started functioning normally again.

  • 2
Reply Report

In my case, this happened after upgrading mac to Catalina and created a new user. I had to first reinstall flutter. get the path. add the path permanently to the environmental variables( don't know if this is a necessary step).

Then I had to go Preferences -> Languages and Frameworks -> Flutter -> add the flutter SDK ( where you installed the latest flutter) to the Flutter SDK path.

  • 2
Reply Report

Go to "Run > Edit Configuration" then go to "Defaults > Android app" then in "General" tab select "App" in module then "Apply".... This is working for me.

like this

and like this

  • 1
Reply Report
      • 2
    • @Chinmay Sarupria, if "app" not appear in drop down then follow these steps "File>Invalidate Caches / Restart...>Invalidate and Restart" and try again above,i hope it will help you
      • 1
    • Yeah I did something similar, I closed project and reopened it, Gradle synced the project and everything started working.