find view by id標(biāo)記為紅色，我不是在onCreateView上做的，幫我解決這種錯(cuò)誤，我真的是android編程的新手package com.example.mymonitoring;public class MonitoringFragment extends Fragment {private static final String TAG = "STATISTICACTIVITY";private Button Temperature;private Button Humidity;private TextView t1;private TextView t2;private static TextView t3;private static final String THINGSPEAK_CHANNEL_ID = "572138";private static final String THINGSPEAK_API_KEY = "ND76MAN2CWQJG25G"; //GARBAGE KEYprivate static final String THINGSPEAK_API_KEY_STRING = "ND76MAN2CWQJG25G";/* Be sure to use the correct fields for your own app*/private static final String THINGSPEAK_FIELD1 = "field1";private static final String THINGSPEAK_FIELD2 = "field2";private static final String THINGSPEAK_FIELD3 = "field3";private static final String THINGSPEAK_UPDATE_URL = "https://api.thingspeak.com/update?";private static final String THINGSPEAK_CHANNEL_URL = "https://api.thingspeak.com/channels/";private static final String THINGSPEAK_FEEDS_LAST = "/feeds/last?";private ThingSpeakChannel tsChannel;private ThingSpeakLineChart tsChart;private LineChartView chartView;public MonitoringFragment() {    // Required empty public constructor}@Nullable@Overridepublic View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {return v;}@Overridepublic void onCreate(Bundle savedInstanceState){        super.onCreate(savedInstanceState);        t1 = (TextView) findViewById(R.id.tempNumber);        t2 = (TextView) findViewById(R.id.humidNumber);這是我的 xml 代碼，fragment_monitoring.xml，findviewById 標(biāo)記為紅色，在擴(kuò)展片段中的 onCreate 方法上執(zhí)行此操作