Question

我想显示从RecyclerView行项目上的Retrofit调用获得的值。我解析JSON对象，并将其存储在Sqlite DB中。我可以设法在TextView上显示5个字符串值中的2个，但是，无法弄清楚为什么其余的都不显示。

下面是我的活动，适配器，模型和数据库类以及行项目的布局，请注意。您能帮我解决这个问题吗？

非常感谢您！

ActivityClass

public class InventoryProductActivity extends AppCompatActivity implements 
InventoryProductListAdapter.CustomClickListener {

private static final String TAG = 
InventoryProductActivity.class.getSimpleName();
private InventoryProductListAdapter mInventoryProductListAdapter;
private RecyclerView mRecyclerView;
private RetrofitClient mRetrofitClient;
LinearLayoutManager mLinearLayoutManager;
private WarehouseDatabase mDatabase;
private ProgressDialog mProgressDialog;

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

    mRetrofitClient = new RetrofitClient();
    mDatabase = new WarehouseDatabase(this);

    loadInventoryProductFeed();
}

private void configViews() {
    mRecyclerView = findViewById(R.id.recycler_view_inventory_product);
    mRecyclerView.setHasFixedSize(true);

    mLinearLayoutManager = new LinearLayoutManager(this);
    mRecyclerView.setLayoutManager(mLinearLayoutManager);

    mInventoryProductListAdapter = new InventoryProductListAdapter(this);
    mRecyclerView.setAdapter(mInventoryProductListAdapter);
}

private void loadInventoryProductFeed() {
    mProgressDialog = new ProgressDialog(InventoryProductActivity.this);
    mProgressDialog.setMessage("Loading Inventory Data...");
    mProgressDialog.setCancelable(true);
    mProgressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
    mProgressDialog.setIndeterminate(true);
    mProgressDialog.show();

    mInventoryProductListAdapter.reset();
    if (getNetworkAvailability()) {
        getFeed();
    } else {
        getFeedFromDatabase();
    }
}



 private void getFeed() {
        Call<InventoryProductModel> call = 
 mRetrofitClient.getWarehouseServiceInventoryProduct().getAllInventoryProducts();
        call.enqueue(new Callback<InventoryProductModel>() {
            @Override
            public void onResponse(Call<InventoryProductModel> call, Response<InventoryProductModel> response) {
                if (response.isSuccessful()) {
                    response.body();

                    String inventoryCode = response.body().getCode().toString(); //1
                    String productName = response.body().getName().toString(); //2
                    String groupID = response.body().getGroupId().toString(); //4
                    String subGroupID = response.body().getGroupId().toString(); //6
                    String typeID = response.body().getGroupId().toString(); //8
                    String producerID = response.body().getProducerId().toString(); //10
                    String inventoryClass = response.body().getInvclass().toString();//11
                    String categoryID = response.body().getCategoryID().toString();//13
                    String countryID = response.body().getCountryId().toString(); //15
                    //TODO Below are null attributes. Empty responses from server.
                    //TODO Find a soloution to handle them or else remove them from db and dont process
                    /*String group = response.body().getGroup().toString(); //3
                    String subGroup = response.body().getSubGroup().toString(); //5
                    String type = response.body().getGroupId().toString(); //7
                    String producer = response.body().getProducer().toString();//9
                    String category = response.body().getCategory().toString(); //12
                    String country = response.body().getCountry().toString();//14*/

                    List<InventoryProductModel> responseList = new ArrayList<>();
                    responseList.add(new InventoryProductModel(inventoryCode.toString(),productName.toString(),
                            groupID.toString(), subGroupID.toString(),typeID.toString(),producerID.toString(),
                                    inventoryClass.toString(),categoryID.toString(),countryID.toString()));

                    for (int i=0; i<responseList.size(); i++){
                    InventoryProductModel inventoryProductModel = responseList.get(i);
                        mInventoryProductListAdapter.addInventoryProduct(inventoryProductModel);
                    }
                    mInventoryProductListAdapter.notifyDataSetChanged();

                } else {
                    int sc = response.code();
                    switch (sc) {
                    }
                }
                mProgressDialog.dismiss();
            }

            @Override
            public void onFailure(Call<InventoryProductModel> call, Throwable t) {
            }
        });
    }

    private void getFeedFromDatabase() {
        List<InventoryProductModel> inventoryProductModelList = mDatabase.getInventoryProducts();
        for (int i = 0; i < inventoryProductModelList.size(); i++) {
            InventoryProductModel inventoryProductModel = inventoryProductModelList.get(i);
            Log.d(TAG, inventoryProductModel.getName() + "||" + inventoryProductModel.getCountryId());
        }
        mProgressDialog.dismiss();
    }

    private boolean getNetworkAvailability() {
        return Utils.isNetworkAvailable(getApplicationContext());
    }

    @Override
    public void onClick(int position) {

    }
}

适配器

    public class InventoryProductListAdapter extends RecyclerView.Adapter<InventoryProductListAdapter.MyViewHolder> {

    private static final String TAG = InventoryProductListAdapter.class.getSimpleName();
    private List<InventoryProductModel> myInventoryProductList;
    private final CustomClickListener mCustomClickListener;

    public InventoryProductListAdapter(CustomClickListener customClickListener) {
        myInventoryProductList = new ArrayList<>();
        mCustomClickListener = customClickListener;
    }

    @NonNull
    @Override
    public MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View row = LayoutInflater.from(parent.getContext()).inflate(R.layout.row_item_inventory_product, null, false);
        return new MyViewHolder(row);
    }

    @Override
    public void onBindViewHolder(@NonNull MyViewHolder holder, int position) {
        InventoryProductModel currentInventoryProduct = myInventoryProductList.get(position);
        holder.mProductName.setText(currentInventoryProduct.getName());
        holder.mInventoryCode.setText(currentInventoryProduct.getCode());
        holder.mInventoryClass.setText(currentInventoryProduct.getInvclass());
        holder.mCategoryID.setText(currentInventoryProduct.getCategoryID());
        holder.mCountryID.setText(currentInventoryProduct.getCountryId());
    }

    @Override
    public int getItemCount() {
        return myInventoryProductList.size();
    }

    public void addInventoryProduct (InventoryProductModel inventoryProductModel){
        myInventoryProductList.add(inventoryProductModel);
    }

    public InventoryProductModel getSelectedInventoryProduct(int position){
        return myInventoryProductList.get(position);
    }

    public void reset() {
        myInventoryProductList.clear();
        notifyDataSetChanged();
    }

    public class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {

        private ImageView mThumbnail;
        private TextView mProductName, mInventoryCode, mInventoryClass, mCategoryID, mCountryID;

        public MyViewHolder(@NonNull View itemView) {
            super(itemView);
            mThumbnail = itemView.findViewById(R.id.thumbnail);
            mProductName = itemView.findViewById(R.id.product_name);
            mInventoryCode = itemView.findViewById(R.id.inventory_code);
            mInventoryClass = itemView.findViewById(R.id.inventory_class);
            mCategoryID = itemView.findViewById(R.id.category_id);
            mCountryID = itemView.findViewById(R.id.country_id);
        }

        @Override
        public void onClick(View v) {
            mCustomClickListener.onClick(getLayoutPosition());
        }
    }
    public interface CustomClickListener {
        void onClick(int position);
    }
}

模型

public class InventoryProductModel {

@SerializedName("code")
@Expose
private String code;

@SerializedName("name")
@Expose
private String name;

@SerializedName("group")
@Expose
private String group;
//private Object group;
@SerializedName("groupId")
@Expose
private String groupId;
@SerializedName("subGroup")
@Expose
private String subGroup;
//private Object subGroup;
@SerializedName("subGroupId")
@Expose
private String subGroupId;
@SerializedName("type")
@Expose
private String type;
//private Object type;
@SerializedName("typeId")
@Expose
private String typeId;
@SerializedName("producer")
@Expose
private String producer;
//private Object producer;
@SerializedName("producerId")
@Expose
private String producerId;
@SerializedName("invclass")
@Expose
private String invclass;

@SerializedName("category")
@Expose
private String category;
//private Object category;
@SerializedName("categoryID")
@Expose
private String categoryID;
@SerializedName("country")
@Expose
private String country;
//private Object country;
@SerializedName("countryId")
@Expose
private String countryId;

    public InventoryProductModel(String code, String name, String group, String groupId, String subGroup,
                                 String subGroupId, String type, String typeId, String producer) {
        this.code = code;
        this.name = name;
        this.group = group;
        this.groupId = groupId;
        this.subGroup = subGroup;
        this.subGroupId = subGroupId;
        this.type = type;
        this.typeId = typeId;
        this.producer = producer;
        this.producerId = producerId;
        this.invclass = invclass;
        this.category = category;
        this.categoryID = categoryID;
        this.country = country;
        this.countryId = countryId;
    }

    public InventoryProductModel() {

    }

    public String getCode() {
        return code;
    }

    public void setCode(String code) {
        this.code = code;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getGroup() {
        return group;
    }

    public void setGroup(String group) {
        this.group = group;
    }

    public String getGroupId() {
        return groupId;
    }

    public void setGroupId(String groupId) {
        this.groupId = groupId;
    }

    public String getSubGroup() {
        return subGroup;
    }

    public void setSubGroup(String subGroup) {
        this.subGroup = subGroup;
    }

    public String getSubGroupId() {
        return subGroupId;
    }

    public void setSubGroupId(String subGroupId) {
        this.subGroupId = subGroupId;
    }

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }

    public String getTypeId() {
        return typeId;
    }

    public void setTypeId(String typeId) {
        this.typeId = typeId;
    }

    public String getProducer() {
        return producer;
    }

    public void setProducer(String producer) {
        this.producer = producer;
    }

    public String getProducerId() {
        return producerId;
    }

    public void setProducerId(String producerId) {
        this.producerId = producerId;
    }

    public String getInvclass() {
        return invclass;
    }

    public void setInvclass(String invclass) {
        this.invclass = invclass;
    }

    public String getCategory() {
        return category;
    }

    public void setCategory(String category) {
        this.category = category;
    }

    public String getCategoryID() {
        return categoryID;
    }

    public void setCategoryID(String categoryID) {
        this.categoryID = categoryID;
    }

    public String getCountry() {
        return country;
    }

    public void setCountry(String country) {
        this.country = country;
    }

    public String getCountryId() {
        return countryId;
    }

    public void setCountryId(String countryId) {
        this.countryId = countryId;
    }

}

数据库

public class WarehouseDatabase extends SQLiteOpenHelper {

    private final String TAG = WarehouseDatabase.class.getSimpleName();

    public WarehouseDatabase(Context context) {
        super(context, Constants.DATABASE.DB_NAME, null, Constants.DATABASE.DB_VERSION);
    }

    //Creating Required Tables
    @Override
    public void onCreate(SQLiteDatabase db) {
        try {
            ..
            db.execSQL(Constants.DATABASE.CREATE_QUERY_TABLE_INVENTORY_PRODUCT);
            ..
        } catch (SQLException ex) {
            Log.d(TAG, ex.getMessage());
        }
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        ..
        db.execSQL(Constants.DATABASE.DROP_QUERY_INVENTORY_PRODUCT);
        ..
        this.onCreate(db);
    }

    //CRUD Operations
    public void addInventoryProduct(InventoryProductModel inventoryProductModel) {
        Log.d(TAG, "Values got: " + inventoryProductModel.getName());

        SQLiteDatabase db = this.getWritableDatabase();
        ContentValues values = new ContentValues();
        values.put(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_BARCODE, inventoryProductModel.getCode());
        values.put(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_NAME, inventoryProductModel.getName());
        values.put(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_GROUP, inventoryProductModel.getGroup());
        values.put(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_GROUP_ID, inventoryProductModel.getGroupId());
        values.put(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_SUB_GROUP, inventoryProductModel.getSubGroup());
        values.put(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_SUB_GROUP_ID, inventoryProductModel.getSubGroupId());
        values.put(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_TYPE, inventoryProductModel.getType());
        values.put(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_TYPE_ID, inventoryProductModel.getTypeId());
        values.put(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_PRODUCER, inventoryProductModel.getProducer());
        values.put(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_PRODUCER_ID, inventoryProductModel.getProducerId());
        values.put(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_INVCLASS, inventoryProductModel.getInvclass());
        values.put(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_CATEGORY, inventoryProductModel.getCategory());
        values.put(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_CATEGORY_ID, inventoryProductModel.getCategoryID());
        values.put(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_COUNTRY, inventoryProductModel.getCountry());
        values.put(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_COUNTRY_ID, inventoryProductModel.getCountryId());

        try {
            db.insert(Constants.DATABASE.TABLE_INVENTORY_PRODUCT, null, values);
        } catch (Exception e) {
        }
        db.close();
    }

    //GET,FETCH ITEMS AS LIST
    public List<InventoryProductModel> getInventoryProducts() {
        SQLiteDatabase db = this.getWritableDatabase();
        Cursor cursor = db.rawQuery(Constants.DATABASE.GET_QUERY_INVENTORY_PRODUCT, null);

        List<InventoryProductModel> listInventoryProduct = new ArrayList<>();

        if (cursor.moveToFirst()) {
            //if there is any item
            do {
                InventoryProductModel inventoryProductModel = new InventoryProductModel();
                inventoryProductModel.setCode(cursor.getString(cursor.getColumnIndex(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_BARCODE)));
                inventoryProductModel.setName(cursor.getString(cursor.getColumnIndex(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_NAME)));
                inventoryProductModel.setGroup(cursor.getString(cursor.getColumnIndex(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_GROUP)));
                inventoryProductModel.setGroupId(cursor.getString(cursor.getColumnIndex(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_GROUP)));
                inventoryProductModel.setSubGroup(cursor.getString(cursor.getColumnIndex(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_SUB_GROUP)));
                inventoryProductModel.setSubGroupId(cursor.getString(cursor.getColumnIndex(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_SUB_GROUP_ID)));
                inventoryProductModel.setType(cursor.getString(cursor.getColumnIndex(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_TYPE)));
                inventoryProductModel.setTypeId(cursor.getString(cursor.getColumnIndex(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_TYPE_ID)));
                inventoryProductModel.setProducer(cursor.getString(cursor.getColumnIndex(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_SUB_GROUP_ID)));
                inventoryProductModel.setProducerId(cursor.getString(cursor.getColumnIndex(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_PRODUCER_ID)));
                inventoryProductModel.setInvclass(cursor.getString(cursor.getColumnIndex(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_INVCLASS)));
                inventoryProductModel.setCategory(cursor.getString(cursor.getColumnIndex(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_CATEGORY)));
                inventoryProductModel.setCategoryID(cursor.getString(cursor.getColumnIndex(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_CATEGORY_ID)));
                inventoryProductModel.setCountry(cursor.getString(cursor.getColumnIndex(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_COUNTRY)));
                inventoryProductModel.setCountryId(cursor.getString(cursor.getColumnIndex(Constants.DATABASE.COLUMN_INVENTORY_PRODUCT_COUNTRY_ID)));

            } while (cursor.moveToNext());
        }
        return listInventoryProduct;
    }
}

行布局

    <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="150dp"
    android:layout_marginTop="5dp"
    android:background="#fff"
    android:orientation="horizontal"
    android:padding="8dp">

    <ImageView
        android:id="@+id/thumbnail"
        android:layout_width="100dp"
        android:layout_height="match_parent"
        android:background="@drawable/img_loading_shape" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="130dp"
        android:layout_margin="8dp"
        android:orientation="vertical">

        <TextView
            android:id="@+id/product_name"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Product name"
            android:textSize="18sp"
            android:textStyle="bold" />

        <TextView
            android:id="@+id/inventory_code"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="5dp"
            android:text="Inventory Code" />

        <TextView
            android:id="@+id/inventory_class"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="5dp"
            android:text="Inventory Class" />

        <TextView
            android:id="@+id/category_id"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="5dp"
            android:text="Category ID" />

        <TextView
            android:id="@+id/country_id"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="5dp"
            android:text="Country ID" />

    </LinearLayout>
</LinearLayout>

RecyclerView不显示所有项目，但仅显示两个

0 个答案: