创建跨进程组件

 

纯代码实现

业务层

定义接口
public interface IMyService extends IInterface {
	static final java.lang.String DESCRIPTOR = "com.demo.MyServer";
	public void hellowWorld() throws RemoteException ;
	static final int TRANSACTION_HELLOW_WORLD = 1;
}
客户端
public class MyServiceProxy implements IMyService {
	private android.os.IBinder mRemote;

	public MyServiceProxy(android.os.IBinder remote) {
		mRemote = remote;
	}

	public java.lang.String getInterfaceDescriptor() {
		return DESCRIPTOR;
	}

	@Override
	public void hellowWorld() throws RemoteException {
		android.os.Parcel _data = android.os.Parcel.obtain();
		android.os.Parcel _reply = android.os.Parcel.obtain();
		try {
			_data.writeInterfaceToken(DESCRIPTOR);
			mRemote.transact(TRANSACTION_HELLOW_WORLD, _data, _reply, 0);
			_reply.readException();
		} finally {
			_reply.recycle();
			_data.recycle();
		}
	}

	@Override
	public IBinder asBinder() {
		return mRemote;
	}
}
服务端
public abstract class MyServiceStub extends Binder implements IMyService{

	public MyService() {
		this.attachInterface(this, DESCRIPTOR);
	}

	@Override
	public IBinder asBinder() {
		return this;
	}

	public static com.demo.IMyService asInterface( android.os.IBinder obj) {
		if ((obj == null)) {
			return null;
		}
		android.os.IInterface iInterface = obj.queryLocalInterface(DESCRIPTOR);
		if (((iInterface != null)&&(iInterface instanceof com.demo.IMyService))){
			return ((com.demo.IMyService) iInterface);
		}
		return null;
	}

	@Override
	protected boolean onTransact(int code, Parcel data, Parcel reply, int flags) throws RemoteException {
		switch (code) {
			case INTERFACE_TRANSACTION: {
				reply.writeString(DESCRIPTOR);
				return true;
			}
			case TRANSACTION_HELLOW_WORLD: {
				data.enforceInterface(DESCRIPTOR);
				hellowWorld();
				reply.writeNoException();
				return true;
			}
		}
		return super.onTransact(code, data, reply, flags);
	}
}
实现层
public class MyService extends MyServiceStub{
	@Override
	public void hellowWorld() {
		System.out.println("Hellow world!");
	}
}

AIDL文件实现

需要2个AIDL文件和2个类。

1个AIDL文件定义业务接口:

interface IMyService {
	MyData getMyData();
}

1个AIDL文件定义通信数据:

parcelable MyData;

1个类实现业务接口:

class RemoteService extend IRemoteService.Stub {

	MyData mMyData;

	RemoteService(MyData mMyData) {
		this.mMyData = mMyData;
	}

	@Override
	public MyData getMyData() throws RemoteException {
		return mMyData;
	}
};

1个类实现通信数据:

class MyData implements Parcelable{
	......
}