关键字：activiy获取 topActiviy 获取、Appium启动

Appium 启动报错，

很有可能是你找到的Activity并不正确，导致启动时无法启动。

Failed to create session. An unknown server-side error occurred while processing the command. Original error: Cannot start the 'com.***' application. Visit https://github.com/appium/appium/blob/master/docs/en/writing-running-appium/android/activity-startup.md for troubleshooting. Original error: Activity name '.cms.presentation.w1elcome.presentation.WelcomeActivity' used to start the app doesn't exist or cannot be launched! Make sure it exists and is a launchable activity

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可以尝试使用

adb shell dumpsys activity | grep realActivity
    realActivity={com.tencent.androidqqmail/com.tencent.qqmail.launcher.desktop.LauncherActivity}

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获取Activiy的方式总结

# windows端：
adb shell dumpsys window windows | findstr mFocusedApp
# mac端：  
adb shell dumpsys window windows | grep mFocusedApp

# 其它方法1
adb shell dumpsys window | grep mFocusedApp

# 其它方法2
adb shell dumpsys activity | grep realActivity