maestro Cannot run example flow on Android

Is there an existing issue for this?

[x] I have searched the existing issues and didn't find mine.

Steps to reproduce

I am follow the doc to run sample :https://docs.maestro.dev/getting-started/run-a-sample-flow

cd ./samples adb install sample.apk maestro test android-flow.yaml

I can see the app was installed successfully, but with exception when I run 'maestro test android-flow.yaml ' , I have try this command by many maestro version.

Tested JDK version : openlogic-openjdk-17.jdk , jdk 17.0.12 , jdk 21.0.9 , jdk 25.0.1 , jdk 17.0.17, jdk 17.0.0 All with this issue.

Actual results

WARNING: Use --enable-native-access=ALL-UNNAMED to avoid a warning for callers in this module WARNING: Restricted methods will be blocked in a future release unless native access is enabled

No content to map due to end-of-input at [Source: REDACTED (StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION disabled); line: 1]

The stack trace was: com.fasterxml.jackson.databind.exc.MismatchedInputException: No content to map due to end-of-input at [Source: REDACTED (StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION disabled); line: 1] at com.fasterxml.jackson.databind.exc.MismatchedInputException.from(MismatchedInputException.java:59) at com.fasterxml.jackson.databind.ObjectMapper._initForReading(ObjectMapper.java:4996) at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4898) at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3848) at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3831) at util.LocalIOSDevice.listDeviceViaDeviceCtl(LocalIOSDevice.kt:76) at maestro.device.DeviceService.listIOSConnectedDevices(DeviceService.kt:266) at maestro.device.DeviceService.listIOSDevices(DeviceService.kt:262) at maestro.device.DeviceService.listDevices(DeviceService.kt:144) at maestro.device.DeviceService.listConnectedDevices(DeviceService.kt:130) at maestro.cli.command.TestCommand.getDeviceIds(TestCommand.kt:304) at maestro.cli.command.TestCommand.getDeviceCount(TestCommand.kt:295) at maestro.cli.command.TestCommand.call(TestCommand.kt:263) at maestro.cli.command.TestCommand.call(TestCommand.kt:74) at picocli.CommandLine.executeUserObject(CommandLine.java:1953) at picocli.CommandLine.access$1300(CommandLine.java:145) at picocli.CommandLine$RunLast.executeUserObjectOfLastSubcommandWithSameParent(CommandLine.java:2358) at picocli.CommandLine$RunLast.handle(CommandLine.java:2352) at picocli.CommandLine$RunLast.handle(CommandLine.java:2314) at picocli.CommandLine$AbstractParseResultHandler.execute(CommandLine.java:2179) at picocli.CommandLine$RunLast.execute(CommandLine.java:2316) at maestro.cli.DisableAnsiMixin$Companion.executionStrategy(DisableAnsiMixin.kt:22) at picocli.CommandLine.execute(CommandLine.java:2078) at maestro.cli.AppKt.main(App.kt:160)

Expected results

app launch

About app

the sample app

About environment

JDK version is : openlogic-openjdk-17.jdk,openlogic-openjdk-17.jdk , jdk 17.0.12 , jdk 21.0.9, 25.0.1 mac os Intel Core i7

Logs

<!-- Replace this line with your logs. *DO NOT* remove the backticks! -->

Maestro version

2.0.5，1.4.0

How did you install Maestro?

install script (https://get.maestro.mobile.dev)

Anything else?

No response

Oct 30 '25 13:10 haizhiguang

MAE-318

Oct 30 '25 13:10 linear[bot]

Does this happen on more mainstream JDKs?

Oct 30 '25 14:10 Fishbowler

Does this happen on more mainstream JDKs?

yes, I tested on openlogic-openjdk-17.jdk , jdk 17.0.12 , jdk 21.0.9 , jdk 25.0.1 , jdk 17.0.17 , jdk 17.0.0 all have this issue

Nov 03 '25 07:11 haizhiguang

Any one can give me some suggestions? which java and maestro version are work fine? thanks!

Nov 05 '25 03:11 haizhiguang

I followed these steps to fix the issue and get Maestro running on Android:

First, I ran:

maestro start-device --platform=android

This produced an error indicating that Android SDK Command-Line Tools were missing:

Missing required component cmdline-tools. To install:

1) Open Android Studio SDK Manager
2) Check "Show package details"
3) Install Android SDK Command-Line Tools (recommended: 11.0)

I opened Android Studio → SDK Manager and installed the Command-Line Tools as suggested.

After that, I ran the command again:

maestro start-device --platform=android

This time I got another message:

The required system image system-images;android-30;google_apis;x86_64 is not installed. Would you like to install it? y/n

I installed the missing system image manually with:

/Users/macbookpro/Library/Android/sdk/cmdline-tools/latest/bin/sdkmanager "system-images;android-30;google_apis;x86_64"

Then I ran again:

maestro start-device --platform=android

This successfully created and launched the emulator:

Created Android emulator: Maestro_Pixel_6_API_30 Launching emulator...

Finally, I was able to run my Maestro test:

maestro test maestro/home.yaml

Until here i knew i was close even if it didn't work

I later downgraded to Maestro 1.40.0, and everything continued to work perfectly. The issue seems to occur only in the newer releases (2.0.x).

✅ Success — Everything is working now! 🎉

Nov 07 '25 20:11 AnasZairig

@AnasZairig All of your start-device stuff is unrelated. The summary is just "works on an outdated version"?

You haven't included any JDK info or logging that you received - that could be handy for debugging this.

Nov 07 '25 21:11 Fishbowler

@Fishbowler I'm using this Java version: java 17.0.12 2024-07-16 LTS

So the same verion as @haizhiguang

Nov 08 '25 12:11 AnasZairig

Just noticed a point part way through your stack trace

at util.LocalIOSDevice.listDeviceViaDeviceCtl(LocalIOSDevice.kt:76)

This definitely shouldn't be trying to do anything with iOS. Can you try this?

maestro --platform android test android-flow.yaml

Nov 10 '25 13:11 Fishbowler

Just noticed a point part way through your stack trace

at util.LocalIOSDevice.listDeviceViaDeviceCtl(LocalIOSDevice.kt:76)

This definitely shouldn't be trying to do anything with iOS. Can you try this?
maestro --platform android test android-flow.yaml

ok, it seem with the same issue as below:

maestro --platform android test android-flow.yaml

No content to map due to end-of-input at [Source: REDACTED (StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION disabled); line: 1]

The stack trace was: com.fasterxml.jackson.databind.exc.MismatchedInputException: No content to map due to end-of-input at [Source: REDACTED (StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION disabled); line: 1] at com.fasterxml.jackson.databind.exc.MismatchedInputException.from(MismatchedInputException.java:59) at com.fasterxml.jackson.databind.ObjectMapper._initForReading(ObjectMapper.java:4996) at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4898) at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3848) at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3831) at util.LocalIOSDevice.listDeviceViaDeviceCtl(LocalIOSDevice.kt:76) at maestro.device.DeviceService.listIOSConnectedDevices(DeviceService.kt:266) at maestro.device.DeviceService.listIOSDevices(DeviceService.kt:262) at maestro.device.DeviceService.listDevices(DeviceService.kt:144) at maestro.device.DeviceService.listConnectedDevices(DeviceService.kt:130) at maestro.cli.command.TestCommand.getDeviceIds(TestCommand.kt:304) at maestro.cli.command.TestCommand.getDeviceCount(TestCommand.kt:295) at maestro.cli.command.TestCommand.call(TestCommand.kt:263) at maestro.cli.command.TestCommand.call(TestCommand.kt:74) at picocli.CommandLine.executeUserObject(CommandLine.java:1953) at picocli.CommandLine.access$1300(CommandLine.java:145) at picocli.CommandLine$RunLast.executeUserObjectOfLastSubcommandWithSameParent(CommandLine.java:2358) at picocli.CommandLine$RunLast.handle(CommandLine.java:2352) at picocli.CommandLine$RunLast.handle(CommandLine.java:2314) at picocli.CommandLine$AbstractParseResultHandler.execute(CommandLine.java:2179) at picocli.CommandLine$RunLast.execute(CommandLine.java:2316) at maestro.cli.DisableAnsiMixin$Companion.executionStrategy(DisableAnsiMixin.kt:22) at picocli.CommandLine.execute(CommandLine.java:2078) at maestro.cli.AppKt.main(App.kt:160)

% java -version java version "17" 2021-09-14 LTS Java(TM) SE Runtime Environment (build 17+35-LTS-2724) Java HotSpot(TM) 64-Bit Server VM (build 17+35-LTS-2724, mixed mode, sharing)

Nov 11 '25 02:11 haizhiguang

Out of interest, do you have an iOS Simulator active at the same time?

Dec 01 '25 10:12 Fishbowler