如何从片段访问服务功能，该片段绑定到Android中的父级活动？

首先方法

sendMessage(message)

LocalBinder

public class SocketListener extends Service {    public void sendMessage(String message){        socket.emit("match", message);    }}

其次从片段访问活动方法，您应该在片段内部创建接口

interface MessageSender {    void sendMessage(String message);}

然后在您的活动中实施

public class MainActivity extends AppCompatActivity implements MessageSender {    @Override    public void sendMessage(String message) {        // call the service here        socketService.sendMessage(message);    }}

在片段中，实现

onAttach()

public class MainViewFragment extends Fragment {    private MessageSender mMessageSenderCallback;    @Override    public void onAttach(Context context) {        super.onAttach(context);         try { mMessageSenderCallback = (MessageSender) context;        } catch (ClassCastException e) { // Error, class doesn't implement the interface        }    }    @Override    public void onDetach() {        super.onDetach();        // Remove activity reference        mMessageSenderCallback = null;    }}

要发送消息，请

mMessageSenderCallback.sendMessage(message)