Cmd + Click not listing usages of functions and class constructors after updating the plugin to 505.0.0 in Android Studio

[HP1324]

The Cmd + Click or Ctrl + Click on a function definition on Android Studio was correctly listing all the usage of that function before I updated the dart plugin to 505.0.0 in Android Studio. But as soon as I updated it, and it also came with "Dependency on lsp4ij with basic initialization".

I am pretty sure this is a plugin issue and not the IDE issue, because it only occurred after I updated the plugin to the latest version, before that, it was working just fine.

Flutter Plugin version: 92.0.0
Dart Plugin Version: 505.0.0
Android Studio Version: Android Studio Panda 4 | 2025.3.4 Patch 1

This video will give a clear idea of this issue, unfortunately I don't have any recording of when it was working as expected.

Screen.Recording.2026-05-12.at.11.42.23.AM.mov

[angelozerr]

Could you please select in the Language Server view the Dart Language server and set Trace as verbose in the LSP console like explained at https://github.com/redhat-developer/lsp4ij/blob/main/docs/UserGuide.md#lsp-console

Close your all files and when the Dart language server is stopped, open your files and do Ctrl+Click like you did and share your LSP trace in this issue. Thanks!

[angelozerr]

I suspect the problem is when you do Ctrl+Click on a function, it should execute LSP references and if it that there is a PR redhat-developer/lsp4ij#1402

@HP1324 if you do a Find Usages (without Ctrl+Click) do you see your result?

[HP1324]

Thank you so much @angelozerr for consideration.

There are two language servers listed in "Language Servers" tab: Dart Language Server and Dart LSP Server, I did what you described and what is discussed in the given link. I got the following output in the trace section:

java.util.concurrent.CompletionException: org.eclipse.lsp4j.jsonrpc.JsonRpcException: java.io.IOException: Pipe closed
	at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(Unknown Source)
	at java.base/java.util.concurrent.CompletableFuture.completeThrowable(Unknown Source)
	at java.base/java.util.concurrent.CompletableFuture$AsyncRun.run(Unknown Source)
	at java.base/java.util.concurrent.CompletableFuture$AsyncRun.exec(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinPool.scan(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source)
Caused by: org.eclipse.lsp4j.jsonrpc.JsonRpcException: java.io.IOException: Pipe closed
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageConsumer.consume(StreamMessageConsumer.java:72)
	at com.redhat.devtools.lsp4ij.LanguageServerWrapper.lambda$start$4(LanguageServerWrapper.java:398)
	... 7 more
Caused by: java.io.IOException: Pipe closed
	at java.base/java.io.PipedInputStream.checkStateForReceive(Unknown Source)
	at java.base/java.io.PipedInputStream.receive(Unknown Source)
	at java.base/java.io.PipedOutputStream.write(Unknown Source)
	at java.base/java.io.OutputStream.write(Unknown Source)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageConsumer.consume(StreamMessageConsumer.java:67)
	... 8 more
java.lang.Exception: Timeout error while shutdown the language server 'dartLanguageServer'
	at com.redhat.devtools.lsp4ij.LanguageServerWrapper.shutdownLanguageServerInstance(LanguageServerWrapper.java:1649)
	at com.redhat.devtools.lsp4ij.LanguageServerWrapper.shutdownAll(LanguageServerWrapper.java:1615)
	at com.redhat.devtools.lsp4ij.LanguageServerWrapper.lambda$stop$28(LanguageServerWrapper.java:1577)
	at java.base/java.util.concurrent.CompletableFuture$AsyncRun.run(Unknown Source)
	at java.base/java.util.concurrent.CompletableFuture$AsyncRun.exec(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinPool.scan(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source)
Caused by: java.util.concurrent.TimeoutException
	at java.base/java.util.concurrent.CompletableFuture.timedGet(Unknown Source)
	at java.base/java.util.concurrent.CompletableFuture.get(Unknown Source)
	at com.redhat.devtools.lsp4ij.LanguageServerWrapper.shutdownLanguageServerInstance(LanguageServerWrapper.java:1643)
	... 9 more

Let me share the screenshot of how it looks like:

The logs tab is completely empty.

I am not an expert in LSP4IJ, so I am not able to determine from the traces whether it is performing a definition request or a references request.

I suspect the problem is when you do Ctrl+Click on a function, it should execute LSP references and if it that there is a PR redhat-developer/lsp4ij#1402

@HP1324 if you do a Find Usages (without Ctrl+Click) do you see your result?

Yes, Find Usages seems to work fine, but it opens a separate panel in the bottom, which takes a lot of time to simply find a specific usage.

Another workaround that I found

I saw there is a "Go to LSP references" option too along with other options, so I removed Cmd + Click shortcut from Android Studio's default "Go to declaration/usages" and set this shortcut for LSP References instead, it works fine, but then it reverses the problem. It will always show the references only.

What I mean is, when clicking on the declaration itself, it should show usages, which it is showing after this workaround, but then, when I click on the usage, it shows the same usages popup, so yes, it works but not efficient.

[angelozerr]

Dart Language Server is an user defined language server that you had added I think.

Please remove it.

According your feedback it is an issue with lsp4ij. Please let me investigate the problem

[HP1324]

Dart Language Server is an user defined language server that you had added I think.

Please remove it.

I never added any language server by myself. But yes, removing "Dart LSP Server (Not Dart Language Server)" fixed the issue and it's working as expected right now. I am sure Dart LSP Server is added by LSP4IJ plugin, and the issue is related to the same only.

According your feedback it is an issue with lsp4ij. Please let me investigate the problem

Okay, thank you so much.

Since this issue seems to be related to LSP4IJ instead of a language specific server, should I close it here? And the discussion can be continued in redhat-developer/lsp4ij#531 ? What do you think?

[angelozerr]

Dart Language Server is an user defined language server that you had added I think.

Please remove it.

I never added any language server by myself. But yes, removing "Dart LSP Server (Not Dart Language Server)" fixed the issue and it's working as expected right now.

You mean that ctrl click is working ?

I am sure Dart LSP Server is added by LSP4IJ plugin, and the issue is related to the same only.

Sorry I meant Dart LSP Server. Lsp4ij provides the capability to add any lsp/dap erver with plugin like it is done with Dart plugin or with just settings (user defined language server) https://github.com/redhat-developer/lsp4ij/blob/main/docs%2FUserDefinedLanguageServer.md

Lsp4ij provides default user defined language server like Dart.

When you open a Dart file lsp4ij provides an editor notification which suggest you to install the Dart LSP Server. See sample with astro https://github.com/redhat-developer/lsp4ij/blob/main/docs%2FUserDefinedLanguageServer.md

So I think you have clicked on this link because lsp4ij doesn't create language server automaticly

Now Dart plugin integrates lsp with lsp4ij, it should not promote Dart LSP Server.

I will do this change

According your feedback it is an issue with lsp4ij. Please let me investigate the problem

Okay, thank you so much.

Since this issue seems to be related to LSP4IJ instead of a language specific server, should I close it here? And the discussion can be continued in redhat-developer/lsp4ij#531 ? What do you think?

[HP1324]

You mean that ctrl click is working ?

Yes, exactly. That is working after I removed Dart LSP Server.
Maybe I had created this accidentally by clicking on that link, because I don't remember doing it.

[angelozerr]

Dart Language Server is an user defined language server that you had added I think.

Please remove it.

I never added any language server by myself. But yes, removing "Dart LSP Server (Not Dart Language Server)" fixed the issue and it's working as expected right now. I am sure Dart LSP Server is added by LSP4IJ plugin, and the issue is related to the same only.

According your feedback it is an issue with lsp4ij. Please let me investigate the problem

Okay, thank you so much.

Since this issue seems to be related to LSP4IJ instead of a language specific server, should I close it here? And the discussion can be continued in redhat-developer/lsp4ij#531 ? What do you think?

Ok I undestand what it happened. I did a fix in LSP4IJ

Could you please recreate this Dart LSP Server and insrall LSP4IJ nighty build and tell me if it is working.

[angelozerr]

To install lsp4ij nightly build see "Testing nightly builds" section in https://github.com/redhat-developer/lsp4ij

To recreate Dart LSP Server see https://github.com/redhat-developer/lsp4ij/blob/main/docs%2FUserDefinedLanguageServer.md

[HP1324]

Sorry I was stuck in some personal stuff. I will let you know after checking.

[HP1324]

I checked it and it was working fine, and it wasn't getting me to the definition itself.

[angelozerr]

Thanks so much @HP1324 for your feedback!

It will avoid having this kind of error when Dart plugin will switch to full lsp support because today only lsp diagnostics is supported.

I suggest that you remove again Dart LSP plugin to avoid having duplicate error validation.

[angelozerr]

@helin24 @pq I think you can close this issue which was an issue with lsp4ij fixed in 0.19.4 that I will release soon.