aidl file for c++ class (couldn't find import for class)

Question

I am teaching myself binder for c++ and there is barely any documentation, so I'm hoping someone can help me figure out why my aidl file isn't compiling for my custom c++ class.

Here is my class header:

1 #include <binder/Parcel.h>
  2 #include <binder/Parcelable.h>
  3 #include <binder/Status.h>
  4 #include <string>
  5 
  6 class CustomType : public android::Parcelable {
  7     public:
  8         bool mem1;
  9         std::string mem2;
 10         int mem3;
 11 
 12         CustomType();
 13         virtual ~CustomType();
 14 
 15         virtual android::status_t writeToParcel(android::Parcel* parcel) const 
    override;
 16         virtual android::status_t readFromParcel(android::Parcel* const parcel) 
    override;
 17 }

Here is its implementation:

1 #include <vector>
  2 #include <customDataType/CustomType.h>
  3 
  4 CustomType::CustomType(){
  5     mem1 = false;
  6     mem2 = "test";
  7     mem3 = 10;
  8 }
  9 
 10 ~CustomType();
 11 
 12 android::status_t CustomType::writeToParcel(android::Parcel* parcel) const{
 13     android::status_t status = OK;
 14     if(status = parcel->write(&mem1, sizeof(bool); status != OK) return status;
 15     if(status = parcel->wwriteString8(mem2); status != OK) return status;
 16     if(status = parcel->writeInt32(mem3); status != OK) return status;
 17 
 18     return status;
 19 }
 20 
 21 android::status_t ustomType::readFromParcel(const android::Parcel* parcel) {
 22     android::status_t status = OK;
 23     if(status = parcel->read(&mem1, sizeof(bool)); status  != OK) return status;
 24     mem2 = parcel->readString8();
 25     if(status = parcel->readInt32(&mem3); status != OK) return status;
 26 
 27     return status;
 28 }

Here is the aidl file defining the Parcelable:

  1 package customDataType;
  2 parcelable CustomType cpp_header "customDataType/CustomType.h";

Here is the aidl file defining the interface:

  1 package customDataType;
  2 
  3 import customDataType.CustomType;
  4 
  5 interface ICustomDataType {
  6     boolean printMemsToScreen(in CustomType data);
  7 }

I'm not sure what order I compile the aidl files in and whether or not I need to compile the c++ files first.

I have tried these two aidl-cpp commands: aidl-cpp ICustomType.aidl . ICustomType.cpp aidl-cpp ICustomDataType.aidl . ICustomDataType.cpp

The first gives me "refusing to generate code from aidl file defining parcelable" and the second gives me "couldn't find import for class customDataType.CustomType"

Thank you for your help!