Android build & sign with cap build android - missing app-release-unsigned.apk

Capacitor
1

Running npx cap build android generates [error] jarsigner: unable to open jar file build\outputs\apk\release\app-release-unsigned.apk`

If I look in the build output, I have the APK, but it is called app-release.apk.

The signing is being conducted by the command therefore I cannot change the jarsigner command.

I thought this may be specific to my environment but I have created it in gitlab docker pipeline and get the same error.

Can I control the name of the output apk file via the cap build android command? I can’t find the docs for the commandline parameters for this?

TIA

2
3

Thanks for the link. Sadly it doesnt have a way to change the apk location or specify anything that could resolve the issue. Any ideas on the error?

4

What is the full command you are running?

5

npx cap build android from my command line on my PC or via a docker gitlab pipeline this is my whole pipeline:

image: registry.gitlab.com/fdroid/fdroidserver:buildserver-bullseye

# List of stages for jobs, and their order of execution
stages:
  - build

variables:
# developer.android.com/studio#cmdline-tools
  ANDROID_SDK_TOOLS:   "11076708"
  ANDROID_COMPILE_SDK: "34"
  ANDROID_BUILD_TOOLS: "34.0.0"
  JAVA_HOME: /usr/lib/jvm/java-17-openjdk-amd64
  
install-and-build:
  stage: build
  script:
    - cd ui
    - apt-get update
    - apt-get install -y ca-certificates gnupg
    - mkdir -p /etc/apt/keyrings
    - curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key | gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg
    - NODE_MAJOR=23
    - echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_$NODE_MAJOR.x nodistro main" | tee /etc/apt/sources.list.d/nodesource.list
    - apt-get update
#node-install:
    - apt-get install nodejs -y
#java-install:
    - apt-get install -y -q openjdk-17-jre openjdk-17-jdk-headless
#android-install:
    - apt-get install wget -y
    - wget --quiet --output-document=android-sdk.zip https://dl.google.com/android/repository/commandlinetools-linux-${ANDROID_SDK_TOOLS}_latest.zip
    - unzip -d sdk android-sdk.zip
    - export ANDROID_HOME=$PWD/sdk
    - export PATH=$PATH:$ANDROID_HOME/cmdline-tools/bin/
    - set +o pipefail
    - yes | $ANDROID_HOME/cmdline-tools/bin/sdkmanager --licenses --sdk_root=sdk
    - set -o pipefail
    - echo y | $ANDROID_HOME/cmdline-tools/bin/sdkmanager --sdk_root=sdk "cmdline-tools;latest" "build-tools;${ANDROID_BUILD_TOOLS}" "platforms;android-${ANDROID_COMPILE_SDK}" "platform-tools" >/dev/null
    - chmod +x ./android/gradlew
#app-build:
    - npm install
    - npm run build
#android-build:
    - npx cap sync android
    - cp my-release-key.keystore android/app/my-release-key.keystore
    - npx cap build android
  artifacts:
    paths:
      - ui/dist/ 
      - ui/android/app/build/outputs/apk/release/*.apk
6

So I had same problem, what helped me is to delete android directory, add it again with npx cap add android the run build of your app and npx cap sync - after run npx cap build android → get error that cant find android sdk path something like this → ***What went wrong:
Could not determine the dependencies of task ‘:app:lintVitalReportRelease’.

SDK location not found. Define a valid SDK location with an ANDROID_HOME environment variable or by setting
the sdk.dir path in your project’s local properties file at ‘C:\Projects\tv-app\android\local.properties’.***

Solution just create this file local.properties with this inside sdk.dir=C:\Users\User\AppData\Local\Android\Sdk - User can be different depends what is your user name - after run npx cap build android