DJI Mobile SDK Documentation

      class KeyListener

      interface KeyListener<T>
      Package:dji.v5.common.callback
      Description:

      It is used to listen the change from a key value.

      Class Members:
      method onValueChange
      void onValueChange(@Nullable T oldValue, @Nullable T newValue)
      Package:dji.v5.common.callback
      Description:

      It will be called when a key value is changed.

      Input Parameters:
      @Nullable T oldValueReturn a old value. Returnnullif there is no old value.
      @Nullable T newValueReturn a new value. Returnnullif there is no new value.