AIDL detailed explanation

目录

AIDL是什么？

AIDL用在哪？

If you now want to do interprocess communication,应该如何操作？

What should the server do？

what the client does？

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AIDL是什么？

Android Communication interface definition language

AIDL用在哪？

两个app进程间通信

If you now want to do interprocess communication,应该如何操作？

分为客户端和服务端

What should the server do？

1.  定义.aidl文件,An abstract method that defines a concrete business

interface ServiceAidlInterface {
    void setname(String name);
    void setmoney(int money);
    String getinfo();
    /**
     * Demonstrates some basic types that you can use as parameters
     * and return values in AIDL.
     */
    void basicTypes(int anInt, long aLong, boolean aBoolean, float aFloat,
            double aDouble, String aString);
}

2.  将项目rebuild,The system will automatically generate and.aidl文件同名的java文件

3.  创建新的类,让类继承 接口.Stub

    public class SericeImpl extends ServiceAidlInterface.Stub{

        private String name;
        private int money;
        @Override
        public void setname(String name) throws RemoteException {
            this.name=name;
        }

        @Override
        public void setmoney(int money) throws RemoteException {


            this.money=money;
        }

        @Override
        public String getinfo() throws RemoteException {
            Intent intent=new Intent();
            intent.setClass(MyService.this,MainActivity.class);
            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            intent.putExtra("name",name);
            intent.putExtra("money",money);
            startActivity(intent);
            return "你的名字是"+name+"花了"+money+"块";
        }

        @Override
        public void basicTypes(int anInt, long aLong, boolean aBoolean, float aFloat, double aDouble, String aString) throws RemoteException {

        }
    }

4.  向客户端公开接口,rely on service

public class MyService extends Service {
    public MyService() {
    }

    @Override
    public IBinder onBind(Intent intent) {
        // TODO: Return the communication channel to the service.
        return new SericeImpl();
    }

what the client does？

1.  将服务器的.aidlPut the package into the client together,将项目rebuild

2.  in the process of binding the service,Unable to connect to the interface exposed by the server（API 30）

    <queries>
        <package android:name="com.wzk.serviceapptoo"/>
    </queries>

3.  在Activity中绑定服务

        Intent intent=new Intent();
        intent.setComponent(new ComponentName("com.wzk.serviceapptoo","com.wzk.serviceapptoo.MyService"));

4.绑定服务后,Start a conversation with the server

            bindService(intent,conn,BIND_AUTO_CREATE);
                try {
                    serviceAidlInterface.setname("小小");
                    serviceAidlInterface.setmoney(5000);
                    String getinfo = serviceAidlInterface.getinfo();
                    Log.i("服务", "onClick: "+getinfo);
                } catch (RemoteException e) {
                    e.printStackTrace();
                }