Android banZheng

public class MainActivity extends AppCompatActivity {

    private BanZhengService.MyBinder myBinder; // 我定义的中间人对象
    private MyConn conn;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Intent intent = new Intent(this, BanZhengService.class);
        //连接服务
        conn = new MyConn();
        bindService(intent, conn, BIND_AUTO_CREATE);
    }
    //点击按钮调用服务里面banzheng的方法
    public void click(View v) {
        myBinder.callBanZheng(10);
    }

    //监视服务的状态
    private class MyConn implements ServiceConnection {
        //当服务连接成功时调用
        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {
            //获取中间人对象
            myBinder = (BanZhengService.MyBinder) service;
        }
        //失去连接
        @Override
        public void onServiceDisconnected(ComponentName name) {

        }
    }

    @Override
    protected void onDestroy() {
        //当activity销毁的时候 解绑服务
        unbindService(conn);
        super.onDestroy();
    }
}

public class BanZhengService extends Service {
    //把我定义的中间人对象返回
    @Override
    public IBinder onBind(Intent intent) {
        // TODO: Return the communication channel to the service.
//        throw new UnsupportedOperationException("Not yet implemented");
        return new MyBinder();
    }

    public void banZheng(int money) {
        if (money>1000) {
            Toast.makeText(getApplicationContext(), "我是lingdao，把zheng给你办了", Toast.LENGTH_SHORT).show();
        } else {
            Toast.makeText(getApplicationContext(), "qianbugou", Toast.LENGTH_SHORT).show();
        }
    }

    //定义中间人对象（IBinder）
    public class MyBinder extends Binder {
        public void callBanZheng(int money) {
            //调用banzheng的方法
            banZheng(money);
        }
    }
}