实现目标: 客户端调用服务端的add接口计算两数之和并返回.

服务端实现

创建IDL文件

在main文件夹上右键点击创建.idl文件, 输入文件名如IMyIdlInterface 目录结构如下: 在IMyIdlInterface.idl中定义方法如下:

// IMyIdlInterface.idl

// Declare any non-default types here with sequenceable or interface statements

interface work.wxmx.aidlstudyserver.IMyIdlInterface {
          
   
    /*
     * Example of a service method that uses some parameters
     */
    void serviceMethod1([in] int anInt);

    int add([in] int a, [in] int b);
}

build一下 build之后会生成对应的接口和类, 如下图所示. 创建ServiceAbility 实现内容如下:

public class ServiceAbility extends Ability {
          
   
    private static final HiLogLabel LABEL_LOG = new HiLogLabel(3, 0xD001100, "Demo");

    private MyIdl mMyIdl = new MyIdl("MyIDL");

    class MyIdl extends MyIdlInterfaceStub {
          
   

        public MyIdl(String descriptor) {
          
   
            super(descriptor);
        }

        @Override
        public void serviceMethod1(int anInt) throws RemoteException {
          
   

        }

        @Override
        public int add(int a, int b) throws RemoteException {
          
   
            HiLog.info(LABEL_LOG, "add " + a + "");
            return a + b;
        }
    }

    @Override
    public IRemoteObject onConnect(Intent intent) {
          
   
        return mMyIdl;
    }
}

要修改config.json, 暴露出此Service

{
          
   
  "module": {
          
   
    "abilities": [
      //...
      {
          
   
        "name": "work.wxmx.aidlstudyserver.ServiceAbility",
        "icon": "$media:icon",
        "description": "$string:serviceability_description",
        "type": "service",
        "visible": true // 新增此行
      }
    ]
  }
}

客户端实现

再创建一个工程, 将服务端的.idl文件和包一块儿复制到client端. 项目结构如下: 在MainAbilitySlice中去绑定服务端的Service, 并在绑定成功之后的回调中调用idl中定义的add方法.

public class MainAbilitySlice extends AbilitySlice {
          
   
    private static final HiLogLabel LABEL_LOG = new HiLogLabel(3, 0x002, "TAG");
    IMyIdlInterface proxy;

    private IAbilityConnection connection = new IAbilityConnection() {
          
   
        @Override
        public void onAbilityConnectDone(ElementName element, IRemoteObject remote, int resultCode) {
          
   
            HiLog.error(LABEL_LOG, "AAA", "");
            proxy = MyIdlInterfaceStub.asInterface(remote);
            //MainAbilitySlice.this.proxy = new MyIdlInterfaceProxy(remote);
            int add = 0;
            try {
          
   
                add = MainAbilitySlice.this.proxy.add(1, 1);
            } catch (RemoteException e) {
          
   
                e.printStackTrace();
            }
            HiLog.error(LABEL_LOG, "      " + add);
        }

        @Override
        public void onAbilityDisconnectDone(ElementName element, int resultCode) {
          
   
            proxy = null;
        }
    };

    @Override
    public void onStart(Intent intent) {
          
   
        super.onStart(intent);
        super.setUIContent(ResourceTable.Layout_ability_main);
    }

    @Override
    public void onActive() {
          
   
        super.onActive();
        Intent intent = new Intent();
        ElementName elementName = new ElementName("", "work.wxmx.aidlstudyserver",
                "work.wxmx.aidlstudyserver.ServiceAbility");
        intent.setElement(elementName);
        connectAbility(intent, connection);
    }

    @Override
    public void onForeground(Intent intent) {
          
   
        super.onForeground(intent);
    }
}

结果如下