如何使用数据绑定从适配器布局调用方法

Question

我尝试使用onClick="@{()-> RegAdapter.getCallFunction()}"调用适配器中的函数，但无法正常工作。 由于我是这个概念的新手，因此如何使用数据绑定概念来获取特定的位置视图。 先感谢您。

这是RegistrationOtpActivity类。

            public class RegistrationOtpActivity extends AppCompatActivity {

                RecyclerView recyclerview;
                RegOtpViewModel viewModel;
                RegOtpAdapter adapter;
                public ProgressBar progressbar;
                ActivityRegBinding activityRegBinding;
                LinearLayoutManager linearLayoutManager;
                public boolean onLoading = false;
                public boolean onLoading3 = false;
                private int thresholdItem = 50;
                public int totalcount = 1;
                public String userId = "";
                List<RegOtpPojoClass.Userlist> List;

                @Override
                protected void onCreate(Bundle savedInstanceState) {
                    super.onCreate(savedInstanceState);

                    activityRegBinding =DataBindingUtil.setContentView(this, R.layout.activity_reg_);
                    recyclerview=activityRegBinding.rvRecyclerView;

                    Toolbar toolbar = (Toolbar) findViewById( R.id.toolbar);
                    setSupportActionBar(toolbar);
                    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
                    getSupportActionBar().setDisplayShowHomeEnabled(true);
                    getSupportActionBar().setTitle("Customer List");


                    viewModel = ViewModelProviders.of(this).get(RegOtpViewModel.class);
                    linearLayoutManager=new LinearLayoutManager(this);
                    recyclerview.setLayoutManager(linearLayoutManager);
                    recyclerview.addOnScrollListener ( recyclerViewOnScrollListener );
                    recyclerview.setHasFixedSize(true);
                    adapter=new RegOtpAdapter();
                    recyclerview.setAdapter(adapter);


                    activityRegBinding.progressbarloader.setVisibility(View.VISIBLE);
                    getCustomerList();
                }

                private void getCustomerList() {
                    viewModel.getCustomer(""+totalcount).observe(this, new Observer<List<RegOtpPojoClass.Userlist>>() {
                        @Override
                        public void onChanged(@Nullable List<RegOtpPojoClass.Userlist> employees) {
                            activityRegBinding.progressbarloader.setVisibility(View.GONE);
                            List=employees;
                            adapter.setCustomeData(getApplicationContext(),(ArrayList<RegOtpPojoClass.Userlist>) employees);
                        }
                    });
                }
                @Override
                public boolean onSupportNavigateUp() {
                    onBackPressed();
                    return true;
                }


                private RecyclerView.OnScrollListener recyclerViewOnScrollListener = new RecyclerView.OnScrollListener() {
                    @Override
                    public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
                        super.onScrollStateChanged(recyclerView, newState);
                    }

                    @Override
                    public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
                        super.onScrolled(recyclerView, dx, dy);

                        if (dy > 0) {
                            int visibleItemCount = linearLayoutManager.getChildCount();
                            int totalItemCount = linearLayoutManager.getItemCount();
                            int firstVisibleItemPosition = linearLayoutManager.findFirstVisibleItemPosition();
                            if ((visibleItemCount + firstVisibleItemPosition) >= totalItemCount && List.size() >= thresholdItem) {
                                if (!onLoading) {
                                    onLoading = true;
                                    List.add(null);
                                    adapter.notifyItemInserted(List.size() - 1);
                                    totalcount = totalcount + 1;
                                    viewModel.getCustomer (""+totalcount);
                                }
                            }
                        }
                    }
                };

            }

这是activity_reg_.xml页面

            <?xml version="1.0" encoding="utf-8"?>
            <layout
                xmlns:android="http://schemas.android.com/apk/res/android"
                xmlns:app="http://schemas.android.com/apk/res-auto">

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:descendantFocusability="blocksDescendants"
                android:orientation="vertical">

                <com.google.android.material.appbar.AppBarLayout
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:theme="@style/AppTheme.AppBarOverlay">

                    <androidx.appcompat.widget.Toolbar
                        android:id="@+id/toolbar"
                        android:layout_width="match_parent"
                        android:layout_height="?attr/actionBarSize"
                        android:background="?attr/colorPrimary"
                        app:popupTheme="@style/AppTheme.PopupOverlay" />

                </com.google.android.material.appbar.AppBarLayout>


                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:orientation="vertical">

                    <ProgressBar
                        android:id="@+id/progressbarloader"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:visibility="gone"
                        android:layout_gravity="center|top"
                     />

                    <androidx.recyclerview.widget.RecyclerView
                        android:id="@+id/rvRecyclerView"
                        android:layout_width="match_parent"
                        android:layout_height="match_parent"
                        android:layout_margin="@dimen/dimen_5dp"/>
                </LinearLayout>

            </LinearLayout>

            </layout>

这是适配器

            public class RegOtpAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>{
                ArrayList<RegOtpPojoClass.Userlist> userlists;
                private static final int VIEW_TYPE_ITEM = 0;
                private static final int VIEW_TYPE_LOADING = 1;
                Context context;

                public void  setCustomeData(Context context, ArrayList<RegOtpPojoClass.Userlist> userlist) {
                    this.context=context;
                    this.userlists = userlist;
                    notifyDataSetChanged();
                }

                @NonNull
                @Override
                public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {

                    if(viewType == VIEW_TYPE_ITEM){
                        CustomerListItemBinding customerListItemBinding =
                                DataBindingUtil.inflate(LayoutInflater.from(parent.getContext()),
                                        R.layout.customer_list_item, parent, false);

                        return new MyViewHolder(customerListItemBinding);
                    }else{
                        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.layout_loading_item, parent, false);
                        LoadingViewHolder cvh = new LoadingViewHolder(view);
                        return cvh;
                    }
                }

                @Override
                public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {


                    if (holder instanceof MyViewHolder) {
                        final MyViewHolder myViewHolder = (MyViewHolder) holder;
                        RegOtpPojoClass.Userlist currentStudent = userlists.get(position);
                        myViewHolder.customerListItemBinding.setCustomerList(currentStudent);

                    }
                }

                @Override
                public int getItemCount() {
                     if(userlists==null) return  0; else return userlists.size();
                }


                @Override
                public int getItemViewType(int position) {
                    return userlists.get(position) == null ? VIEW_TYPE_LOADING : VIEW_TYPE_ITEM;
                }

                class MyViewHolder extends RecyclerView.ViewHolder {

                    private CustomerListItemBinding customerListItemBinding;

                    public MyViewHolder(@NonNull CustomerListItemBinding CustomerListItemBinding) {
                        super(CustomerListItemBinding.getRoot());

                        this.customerListItemBinding = CustomerListItemBinding;
                    }
                }


                public void getCallFunction(){

                    String phone = ""+userlists.get(0).getMobile();
                    Intent intent = new Intent(Intent.ACTION_DIAL, Uri.fromParts("tel", phone, null));
                    context.startActivity(intent);


                }


            }

适配器Xml类

            <?xml version="1.0" encoding="utf-8"?>
            <layout
                xmlns:android="http://schemas.android.com/apk/res/android"
                xmlns:tools="http://schemas.android.com/tools">

                <data>
                    <variable
                        name="CustomerList"
                        type="com.kann.basiynadmin.registration.RegOtpPojoClass.Userlist"/>
                    <variable
                        name="RegAdapter"
                        type="com.kann.basiynadmin.registration.RegOtpAdapter"/>


                </data>

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                xmlns:app="http://schemas.android.com/apk/res-auto"
                android:background="@color/white"
                android:orientation="vertical">

                <androidx.cardview.widget.CardView
                    android:id="@+id/card_delivery_option"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:padding="@dimen/dimen_20dp"
                    android:fitsSystemWindows="true"
                    android:visibility="visible"
                    app:cardCornerRadius="2dp"
                    app:cardElevation="2dp">

                    <LinearLayout
                        android:id="@+id/relaLayName"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:gravity="center_vertical"
                        android:layout_marginTop="@dimen/dimen_20dp"
                        android:layout_marginBottom="@dimen/dimen_20dp"
                        android:layout_marginLeft="@dimen/dimen_10dp"
                        android:weightSum="2"
                        android:orientation="horizontal">
                        <LinearLayout
                            android:layout_width="0dp"
                            android:layout_weight="1.4"
                            android:layout_margin="@dimen/dimen_5dp"
                            android:layout_height="wrap_content"
                            android:orientation="horizontal">
                            <ImageView
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content"
                                android:maxLines="1"
                                android:layout_marginRight="@dimen/dimen_5dp"
                                android:background="@drawable/ic_local_phone_black_24dp"/>

                            <TextView
                                android:id="@+id/txt_mobile"
                                android:layout_width="match_parent"
                                android:layout_height="wrap_content"
                                android:maxLines="1"
                                android:text="@{CustomerList.mobile}"
                                android:textSize="16sp"
                                android:onClick="@{()-> RegAdapter.getCallFunction()}"
                                android:textColor="@color/black" />
                        </LinearLayout>

                        <LinearLayout
                            android:layout_width="0dp"
                            android:layout_weight=".6"
                            android:layout_height="wrap_content"
                            android:layout_margin="@dimen/dimen_5dp"
                            android:orientation="horizontal">
                            <TextView
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content"
                                android:maxLines="1"
                                android:text="OTP : "
                                android:textSize="16sp"
                                android:textColor="@color/black_near" />
                            <TextView
                                android:id="@+id/otp_number"
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content"
                                android:maxLines="1"
                                android:text="@{CustomerList.verification_code}"
                                android:textSize="16sp"
                                android:textColor="@color/dark_green" />

                        </LinearLayout>


                    </LinearLayout>

                </androidx.cardview.widget.CardView>

                <View
                    android:layout_width="match_parent"
                    android:layout_height="0.5dp"
                    android:background="@color/grey_10"/>

            </LinearLayout>
            </layout>

这是模型课

            public class RegOtpPojoClass {

                @SerializedName("userlist")
                public List<Userlist> userlist;

                @SerializedName("status")
                private String status;

                public List<Userlist> getUserlist() {
                    return userlist;
                }

                public void setUserlist(List<Userlist> userlist) {
                    this.userlist = userlist;
                }

                public String getStatus() {
                    return status;
                }

                public void setStatus(String status) {
                    this.status = status;
                }

                public class Userlist {

                    @SerializedName("userid")
                    private String userid;

                    @SerializedName("mobile")
                    private String mobile;

                    @SerializedName("is_mobile_verified")
                    private String is_mobile_verified;
                    @SerializedName("verification_code")
                    private String verification_code;


                    public String getVerification_code() {
                        return verification_code;
                    }

                    public void setVerification_code(String verification_code) {
                        this.verification_code = verification_code;
                    }
                    public String getUserid() {
                        return userid;
                    }

                    public void setUserid(String userid) {
                        this.userid = userid;
                    }

                    public String getMobile() {
                        return mobile;
                    }

                    public void setMobile(String mobile) {
                        this.mobile = mobile;
                    }

                     String getIs_mobile_verified() {
                        return is_mobile_verified;
                    }

                    public void setIs_mobile_verified(String is_mobile_verified) {
                        this.is_mobile_verified = is_mobile_verified;
                    }


                }
            }