[code]_[service]_[iBind:activity

Mainactivity.java

public class MainActivity extends AppCompatActivity  implements View.OnClickListener{

    public myservice.download downloadbinder;
    private Button bt1;
    private Button bt2;

    private ServiceConnection conn = new ServiceConnection() {
        @Override
        public void onServiceConnected(ComponentName componentName, IBinder iBinder) {
            downloadbinder = (myservice.download)iBinder;
            downloadbinder.startdownload();
            downloadbinder.ondownload();
            downloadbinder.enddownload();
        }

        @Override
        public void onServiceDisconnected(ComponentName componentName) {
        }
    };
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        bt1 = (Button)findViewById(R.id.button);
        bt1.setOnClickListener(this);
        bt2 = (Button)findViewById(R.id.button2);
        bt2.setOnClickListener(this);
    }


    @Override
    public void onClick(View view) {
            switch (view.getId()){
                case R.id.button:
                    bindService(new Intent(MainActivity.this, myservice.class), conn, BIND_AUTO_CREATE);
                    break;
                case R.id.button2:
                    unbindService(conn);
            }
        }

    }

myservice.java

public class myservice extends Service {

    private download binddownload = new download();
    class download extends Binder{
        public void startdownload() {
            Log.e("myservice", "start download");
        }
        public void ondownload(){
            Log.e("myservice", "download ....");
        }
        public void enddownload(){
            Log.e("myservice","end download");
        }

    }

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

    @Override
    public void onCreate(){
        super.onCreate();
        Log.e("myservice","create service");
    }
    @Override
    public void onDestroy(){
        Log.e("myservice","destroy service");
        super.onDestroy();

    }
}

结合文章[knowledgePoint]_[Service]，来了解活动控制服务的操作