• bindservice调用服务流程: 
  • 在服务内部有一个方法需要我们调用 比如办证方法

public void certificate(int money) {        if (money > 500) {            Toast.makeText(this, "马上给你办证", Toast.LENGTH_SHORT).show();        } else {            Toast.makeText(this, "没钱办什么证", Toast.LENGTH_SHORT).show();        }    }

• • 在服务内部 声明一个中间人对象(IBinder实现类)

class myBinder extends Binder implements IService {        @Override        public void callCertificate(int money) {            certificate(money);        }    }

• • 在服务的onBind方法里面把我们定义的中间人对象返回

@Nullable    @Override    public IBinder onBind(Intent intent) {        return new myBinder();    }

• • 在mainActivity里面调用bindService 目的是为了获取我们定义的中间人对象

public class MainActivity extends AppCompatActivity {    private IService iservce;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        Intent intent = new Intent(this, MyService.class);        MyServiceConnection myconn = new MyServiceConnection();        bindService(intent,myconn,BIND_AUTO_CREATE);    }    public void click(View view) {        iservce.callCertificate(666);    }    class MyServiceConnection implements ServiceConnection{        @Override        public void onServiceConnected(ComponentName name, IBinder service) {            iservce = (IService) service;        }        @Override        public void onServiceDisconnected(ComponentName name) {        }    }}