appium desktop https://github.com/appium/appium-desktop/releases
sdk与android studio https://developer.android.com/studio/?hl=zh-cn#downloads
capability https://github.com/appium/appium/blob/master/docs/en/writing-running-appium/caps.md
appium官方提供的示例代码 https://github.com/appium/appium/blob/master/sample-code/