无法在服务中使用findViewById，已使用LayoutInflater但未提供帮助，未显示任何值

LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view = inflater.inflate(R.layout.your_layout, null);
TextView textView = view.findViewById(R.id.your_textview);

public class MyApp extends Application {
    private static Context appContext;

    @Override
    public void onCreate() {
        super.onCreate();
        appContext = getApplicationContext();
    }

    public static Context getAppContext() {
        return appContext;
    }
}

Context context = MyApp.getAppContext();
View view = LayoutInflater.from(context).inflate(R.layout.your_layout, null);
TextView textView = view.findViewById(R.id.your_textview);

public interface MyCallback {
    void onUpdateUI(String value);
}

public class MyService extends Service {
    private MyCallback callback;

    public void setCallback(MyCallback callback) {
        this.callback = callback;
    }

    // 在服务中更新UI视图的地方调用回调方法
    private void updateUI(String value) {
        if (callback != null) {
            callback.onUpdateUI(value);
        }
    }
}

public class MyActivity extends AppCompatActivity implements MyCallback {
    private TextView textView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        textView = findViewById(R.id.your_textview);

        MyService myService = new MyService();
        myService.setCallback(this);
        // 启动服务并执行相关操作
    }

    @Override
    public void onUpdateUI(String value) {
        textView.setText(value);
    }
}