android - Travis CI Android 测试 : no connected devices

Question

我正在尝试为 Android 设置 Travis。到目前为止，运行构建似乎可以工作，但是在测试时，它会提示“没有连接的设备!”

:app:connectedAndroidTestDebug FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:connectedAndroidTestDebug'.
> com.android.builder.testing.api.DeviceException: java.lang.RuntimeException: 
    No connected devices!

这是我的 .travis.yml，据我了解，我正在为测试创建并启动一个模拟器，就像 documentation 一样。说。

language: android
android:
  components:
    # Uncomment the lines below if you want to
    # use the latest revision of Android SDK Tools
    # - platform-tools
    # - tools

    # The BuildTools version used by your project
    - build-tools-22.0.1

    # The SDK version used to compile your project
    - android-22

    # Additional components
    - extra-google-google_play_services
    - extra-google-m2repository
    - extra-android-m2repository
    # - addon-google_apis-google-19
    # - add-on
    # - extra

    # Specify at least one system image,
    # if you need to run emulator(s) during your tests
    - sys-img-armeabi-v7a-android-22
    # - sys-img-x86-android-17

  licenses:
    - 'android-sdk-license-.+'

  # Emulator Management: Create, Start and Wait
  before_script:
    - echo no | android create avd --force -n test -t android-22 --abi armeabi-v7a
    - emulator -avd test -no-skin -no-audio -no-window &
    - android-wait-for-emulator
    - adb shell input keyevent 82 &

你能告诉我我做错了什么以及如何解决它吗？

Answer 1

不幸的是，我不允许发表评论，因为我只想完成 DominicJodoin 的回答。正如 DominicJodoin 所述，正确的缩进和更长的 ADB_INSTALL_TIMEOUT 是必要的。

在我看来，您的模拟器正在运行，但尚未准备好安装 apk。使用 - adb wait-for-device 等待设备连接。根据Documentation这意味着:

Note that this command does not cause adb to wait until the entire system is fully booted. For that reason, you should not prepend it to other commands that require a fully booted system.

尝试在 travis.yml 中用 - android-wait-for-emulator 替换这一行。

Travis.yml

language: android
jdk: oraclejdk7
cache:
  directories:
   - node_modules
sudo: false

android:
  components:
   # Uncomment the lines below if you want to
    # use the latest revision of Android SDK Tools
    # - platform-tools
    # - tools

    # The BuildTools version used by your project
    - build-tools-22.0.1

    # The SDK version used to compile your project
    - android-22

    # Additional components
    - extra-google-google_play_services
    - extra-google-m2repository
    - extra-android-m2repository
    # - addon-google_apis-google-19
    # - add-on
    # - extra

    # Specify at least one system image,
    # if you need to run emulator(s) during your tests
    - sys-img-armeabi-v7a-android-21
    # - sys-img-x86-android-17

  licenses:
   - 'android-sdk-license-.+'

env:
  global:
   # install timeout in minutes (2 minutes by default)
    - ADB_INSTALL_TIMEOUT=8

# Emulator Management: Create, Start and Wait
before_script:
  - echo no | android create avd --force -n test -t android-21 --abi armeabi-v7a
  - emulator -avd test -no-skin -no-audio -no-window &
  - android-wait-for-emulator
  - adb shell input keyevent 82 &

script:
  - android list target
  - ./gradlew connectedAndroidTest