android - Travis CI 错误 : Could not access package manager. 系统是否运行？

Question

我正在尝试将 travis CI 用于我的一个项目，但我无法让它工作。我设法制作了一个 .travis.yml 配置文件并且构建通过了。但令人惊讶的是，当我在几个小时后推送提交时，构建再次开始失败。此外，当我重新启动之前通过的构建时，构建失败。我不明白为什么会随机发生这种情况。

这是travis日志: Travis Log

.travis.yml 文件如下所示:

language: android
jdk: oraclejdk8
sudo: required
env:
  matrix:
    - ANDROID_TARGET=android-21  ANDROID_ABI=armeabi-v7a

android:
  components:
    - tools
    - platform-tools
    - tools
    - build-tools-26.0.2
    - $ANDROID_TARGET
    - android-26
    - sys-img-armeabi-v7a-$ANDROID_TARGET
  licenses:
    - android-sdk-preview-license-.+
    - android-sdk-license-.+
    - google-gdk-license-.+
before_install:
  - mkdir "$ANDROID_HOME/licenses" || true
  - echo -e "\n8933bad161af4178b1185d1a37fbf41ea5269c55" > "$ANDROID_HOME/licenses/android-sdk-license"
  - echo -e "\n84831b9409646a918e30573bab4c9c91346d8abd" > "$ANDROID_HOME/licenses/android-sdk-preview-license"
  - chmod +x gradlew
  - ./gradlew dependencies || true
before_cache:
  - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
  - rm -fr $HOME/.gradle/caches/*/plugin-resolution/
cache:
  directories:
    - $HOME/.gradle/caches/
    - $HOME/.gradle/wrapper/
    - $HOME/.android/build-cache
before_script:
  # Create and start emulator
  - echo no | android create avd --force -n test -t $ANDROID_TARGET --abi $ANDROID_ABI
  - emulator -avd test -no-skin -no-audio -no-window &
  - adb wait-for-device
  - adb shell input keyevent 82 &

script: ./gradlew connectedAndroidTest

和gradle文件相关的 fragment :

android {
    compileSdkVersion 26
    buildToolsVersion "26.0.2"
    defaultConfig {
        applicationId "com.amit.realmmvp"
        minSdkVersion 15
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    lintOptions {
        abortOnError false
    }
}

关于同一个问题stack overflow上也有类似的问题，但是都和android studio和emulator not getting started有关。但是，在 travis 配置文件中，我已经要求它等到模拟器使用 -adb wait-for-device

上线

谁能帮我解决这个问题？谢谢。

编辑

构建过程在这里失败:

:app:connectedDebugAndroidTestUnable to install /home/travis/build/AmitBarjatya/RealmMvp/app/build/outputs/apk/debug/app-debug.apk
com.android.ddmlib.InstallException: Unknown failure (Error: Could not access the Package Manager.  Is the system running?)
    at com.android.ddmlib.Device.installRemotePackage(Device.java:1004)
    at com.android.ddmlib.Device.installPackage(Device.java:911)
    at com.android.builder.testing.ConnectedDevice.installPackage(ConnectedDevice.java:122)
    at com.android.builder.internal.testing.SimpleTestCallable.call(SimpleTestCallable.java:126)
    at com.android.builder.internal.testing.SimpleTestCallable.call(SimpleTestCallable.java:52)
    at java.util.concurrent.ForkJoinTask$AdaptedCallable.exec(ForkJoinTask.java:1424)
    at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
    at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
    at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
    at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)

Answer 1

代替

  - adb wait-for-device

使用

  - android-wait-for-emulator

android-wait-for-emulator脚本不仅要等待设备，还要等待开机动画太完整。