Sorting out the encapsulation classes of control elements in appium

        Appium For middle control AndroidElement Interface definition . Its inheritance structure is as follows ：

 AndroidElement The interface mainly includes two types of methods ： Get control properties , Execute control operation function .

         Get control properties ： Get and set text、 obtain name、 obtain id、 Get child controls, etc ;

         Perform control operations ： Click on 、 Long press 、 Drag and drop 、 Sliding, etc ;