appium+Andriod環境搭建遇到問題
報錯：Caused by: org.openqa.selenium.WebDriverException: An unknown server-side error occurred while processing the command. Original error: Cannot verify the signature of ‘/Applications/Appium.app/Contents/Resources/app/node_modules/appium/node_modules/appium-uiautomator2-server/apks/appium-uiautomator2-server-v4.21.1.apk’. Original error: Error: A JNI error has occurred, please check your installation and try again
Exception in thread “main” java.lang.UnsupportedClassVersionError: com/android/apksigner/ApkSignerTool has been compiled by a more recent version of the Java Runtime (class file version 53.0), this version of the Java Runtime only recognizes class file versions up to 52.0
原因：安裝android sdk時bulid-tools版本30以上和jdk1.8的不匹配，所以需要將bulid-tools版本降為30以下的
安裝Android Studio開發工具，在該工具裡安裝android sdk,降低版本的方法：
步驟1：
啟動Android Studio，點選Configrue
步驟2，選擇SDK Manager
步驟3：選擇SDK Tools 選擇build-tools勾選Show Package detill
步驟4：選擇自己需要的版本