Данные Firestore извлекаются на recyclerview, не отображаются, пока я не нажму на панель поиска EditText на фрагменте - PullRequest
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Данные Firestore извлекаются на recyclerview, не отображаются, пока я не нажму на панель поиска EditText на фрагменте

0 голосов
/ 07 мая 2020

Я сохранил все свои данные в облачном хранилище firebase. Попытка показать их на recyclerView, а также сделать их фильтруемыми. Но когда я нахожусь на фрагменте, где реализован recycleView, ничего не отображается, пока я не нажму на панель поиска EditText. Чтобы понять проблему, нажмите здесь https://imgur.com/6CVTKCu, чтобы посмотреть видео.

MarketFragment. java

package com.example.farmersapp;

import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;

import androidx.annotation.NonNull;
import androidx.constraintlayout.widget.ConstraintLayout;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import com.firebase.ui.firestore.FirestoreRecyclerOptions;
import com.google.android.gms.tasks.OnFailureListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.android.material.floatingactionbutton.FloatingActionButton;
import com.google.firebase.firestore.CollectionReference;
import com.google.firebase.firestore.FirebaseFirestore;
import com.google.firebase.firestore.Query;
import com.google.firebase.firestore.QuerySnapshot;

import java.util.ArrayList;
import java.util.List;

public class MarketFragment extends Fragment {

  private static final String ARG_PARAM1 = "param1";
  private static final String ARG_PARAM2 = "param2";
  private FloatingActionButton floatingAddNewItemButton;

  private String mParam1;
  private String mParam2;

  RecyclerView marketRecyleView;
  ListAdapter_Market marketListAdapter;
  ArrayList<productsListOfMarketFirestore> mData;
  ConstraintLayout rootLayout;
  EditText searchInput;
  CharSequence search = "";
  FirestoreRecyclerOptions<productsListOfMarketFirestore> options;

  AlternateListAdapter_Market adapter;

  private FirebaseFirestore firebaseFirestore = FirebaseFirestore.getInstance();
  private CollectionReference productsOfMarketCollectionRef = firebaseFirestore.collection("products_of_market");

  public MarketFragment() {
  }

  public static MarketFragment newInstance(String param1, String param2) {
    MarketFragment fragment = new MarketFragment();
    Bundle args = new Bundle();
    args.putString(ARG_PARAM1, param1);
    args.putString(ARG_PARAM2, param2);
    fragment.setArguments(args);
    return fragment;
  }

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    if (getArguments() != null) {
      mParam1 = getArguments().getString(ARG_PARAM1);
      mParam2 = getArguments().getString(ARG_PARAM2);
    }
  }
  productsListOfMarketFirestore[] item = new productsListOfMarketFirestore[100];

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
      Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    View contentView =inflater.inflate(R.layout.fragment_market, container, false);

    floatingAddNewItemButton = contentView.findViewById(R.id.floatingActionButton);
    marketRecyleView = contentView.findViewById(R.id.market_rv);
    rootLayout = contentView.findViewById(R.id.root_layout);
    searchInput = contentView.findViewById(R.id.search_input);
    mData = new ArrayList<>();


    searchInput.setBackgroundResource(R.drawable.search_input_style);
    rootLayout.setBackgroundColor(getResources().getColor(R.color.white));


   getDataToArray();
    setUpRecyclerViewManual();
    searchInput.addTextChangedListener(new TextWatcher() {
      @Override
      public void beforeTextChanged(CharSequence s, int start, int count, int after) {

      }

      @Override
      public void onTextChanged(CharSequence s, int start, int before, int count) {


          adapter.getFilter().filter(s);
          search = s;
      }

      @Override
      public void afterTextChanged(Editable s) {


      }
    });

      Log.d("checked","i am here");
      floatingAddNewItemButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
          Fragment fragment = new AddNewItemFragment();
          FragmentManager fragmentManager = getActivity().getSupportFragmentManager();
          FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();

          fragmentTransaction.setCustomAnimations(R.anim.enter_from_right, R.anim.exit_to_right, R.anim.enter_from_right, R.anim.exit_to_right);
          fragmentTransaction.replace(R.id.container, fragment);
          fragmentTransaction.addToBackStack(null);
          fragmentTransaction.commit();

        }
      });
    return contentView;
  }



    @Override
    public void onStart() {
        super.onStart();

    }

    @Override
    public void onStop() {
        super.onStop();
    }

  private void getDataToArray() {
    productsOfMarketCollectionRef.get().addOnSuccessListener(new OnSuccessListener<QuerySnapshot>() {
      @Override
      public void onSuccess(QuerySnapshot queryDocumentSnapshots) {
        if (queryDocumentSnapshots.isEmpty()) {
          Log.d("checked", "database is empty");
        } else {
          List<productsListOfMarketFirestore> data = queryDocumentSnapshots.toObjects(productsListOfMarketFirestore.class);

          mData.addAll(data);
          Log.d("checked success:", "ok " + mData);
        }


      }
    }).addOnFailureListener(new OnFailureListener() {
      @Override
      public void onFailure(@NonNull Exception e) {
        Log.d("checked", "data load failed");
      }
    });


  }
  private void setUpRecyclerViewManual() {
    marketRecyleView.setHasFixedSize(true);
    RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(this.getContext());
    adapter = new AlternateListAdapter_Market(mData,this.getContext());
    marketRecyleView.setAdapter(adapter);
    Log.d("checked","adapter called");

    marketRecyleView.setLayoutManager(layoutManager);


  }

}

AlternateListAdapter_Market . java

package com.example.farmersapp;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.AnimationUtils;
import android.widget.Filter;
import android.widget.Filterable;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentActivity;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;
import androidx.recyclerview.widget.RecyclerView;

import com.google.android.gms.tasks.OnSuccessListener;
import com.google.firebase.storage.FileDownloadTask;
import com.google.firebase.storage.FirebaseStorage;
import com.google.firebase.storage.StorageReference;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class AlternateListAdapter_Market extends RecyclerView.Adapter<AlternateListAdapter_Market.AlternateListHolder_Market> implements Filterable {

     List<productsListOfMarketFirestore>filterList;
     List<productsListOfMarketFirestore>mainList;
     Context mContext;

    @NonNull
    @Override
    public AlternateListHolder_Market onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View layout;

        layout = LayoutInflater.from(mContext).inflate(R.layout.customlist_item_market, parent, false);
        return new AlternateListHolder_Market(layout);
    }

    @Override
    public void onBindViewHolder(@NonNull final AlternateListHolder_Market holder, int position) {

        productsListOfMarketFirestore curretItem = filterList.get(position);
        holder.imageView.setAnimation(AnimationUtils.loadAnimation(mContext,R.anim.fade_transition_animation));
        holder.container.setAnimation(AnimationUtils.loadAnimation(mContext,R.anim.fade_scale_animation));

        holder.textView_productId.setText(curretItem.getProductId());
        holder.textView_price.setText(curretItem.getProductPrice());
        holder.textView_title.setText(curretItem.getProductTitle());
        StorageReference storageReference = FirebaseStorage.getInstance().getReferenceFromUrl("gs://app-31e12.appspot.com/user_image1/").child(curretItem.getProductId() + ".jpg");
        try {
            final File file = File.createTempFile("image", "jpg");
            storageReference.getFile(file).addOnSuccessListener(new OnSuccessListener<FileDownloadTask.TaskSnapshot>() {
                @Override
                public void onSuccess(FileDownloadTask.TaskSnapshot taskSnapshot) {
                    Bitmap bitmap = BitmapFactory.decodeFile(file.getAbsolutePath());
                    holder.imageView.setImageBitmap(bitmap);

                }
            });
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

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

    @Override
    public Filter getFilter() {

        return filteredData;
    }
    private   Filter filteredData= new Filter() {
        @Override
        protected FilterResults performFiltering(CharSequence constraint) {
            List<productsListOfMarketFirestore> filteredList = new ArrayList<>();

            if (constraint == null || constraint.length() == 0) {
                filterList = mainList;
            } else {
                String filterPattern = constraint.toString().toLowerCase().trim();

                for (productsListOfMarketFirestore item : mainList) {
                    if (item.getProductTitle().toLowerCase().contains(filterPattern)) {
                        Log.d("checked","productTitle check "+item.getProductTitle());
                        filteredList.add(item);
                    }
                }
                filterList = filteredList;

            }

            FilterResults results = new FilterResults();
            results.values = filterList;

            return results;
        }

        @Override
        protected void publishResults(CharSequence constraint, FilterResults results) {

            filterList =(List<productsListOfMarketFirestore>)results.values;
            notifyDataSetChanged();
        }
    };
    class AlternateListHolder_Market extends RecyclerView.ViewHolder{

        ImageView imageView;
        TextView textView_title;
        TextView textView_price,textView_productId;
        RelativeLayout container;

        public AlternateListHolder_Market(@NonNull View itemView) {
            super(itemView);

            imageView = itemView.findViewById(R.id.imageView_item_market);
            textView_title = itemView.findViewById(R.id.textView_item_title_market);
            textView_price = itemView.findViewById(R.id.textView_price);
            textView_productId = itemView.findViewById(R.id.textView_productId);
            container = itemView.findViewById(R.id.item_container_market);
            itemView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {


                    Fragment itemFragment = MarketItemDetails.newInstance("", "");
                    if (itemFragment != null) {

                        FragmentManager fragmentManager = ((FragmentActivity) v.getContext()).getSupportFragmentManager();
                        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
                        Bundle args = new Bundle();
                        args.putString("productId", textView_productId.getText().toString());
                        itemFragment.setArguments(args);
                        fragmentTransaction.setCustomAnimations(R.anim.enter_from_right, R.anim.exit_to_right, R.anim.enter_from_right, R.anim.exit_to_right);
                        fragmentTransaction.replace(R.id.container, itemFragment);
                        fragmentTransaction.addToBackStack(null);
                        fragmentTransaction.commit();
                    } else {
                        Log.d("error", "null exception");
                    }
                }
            });


        }
    }

    AlternateListAdapter_Market(List<productsListOfMarketFirestore > exampleList,Context Context) {
        this.filterList = exampleList;
        this.mainList = exampleList;
        this.mContext = Context;
    }


public void setFilterList(List<productsListOfMarketFirestore> mList)
{
    this.filterList = mList;
    notifyDataSetChanged();
}


}

productsListOfMarketFirestore. java

package com.example.farmersapp;

public class productsListOfMarketFirestore  {

    String productArea,productCategory,productCondition,productDescription;
    String productId,productOwner,productPrice,productRegion,productTitle;

    public productsListOfMarketFirestore() {
    }

    public productsListOfMarketFirestore(String productArea, String productCategory, String productCondition, String productDescription, String productId, String productOwner, String productPrice, String productRegion, String productTitle) {
        this.productArea = productArea;
        this.productCategory = productCategory;
        this.productCondition = productCondition;
        this.productDescription = productDescription;
        this.productId = productId;
        this.productOwner = productOwner;
        this.productPrice = productPrice;
        this.productRegion = productRegion;
        this.productTitle = productTitle;
    }

    public String getProductArea() {
        return productArea;
    }

    public String getProductCategory() {
        return productCategory;
    }

    public String getProductCondition() {
        return productCondition;
    }

    public String getProductDescription() {
        return productDescription;
    }

    public String getProductId() {
        return productId;
    }

    public String getProductOwner() {
        return productOwner;
    }

    public String getProductPrice() {
        return productPrice;
    }

    public String getProductRegion() {
        return productRegion;
    }

    public String getProductTitle() {
        return productTitle;
    }
}

fragment_market. xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    android:background="@color/white"
    android:id="@+id/root_layout">


    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/market_rv"
        android:layout_width="411dp"
        android:layout_height="672dp"
        android:layout_marginEnd="8dp"
        android:paddingTop="20dp"
        android:paddingBottom="20dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/search_input"
        tools:listitem="@layout/customlist_item_market" />

    <com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/floatingActionButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:clickable="true"
        android:src="@drawable/ic_add_black_24dp"
        app:backgroundTint="#0979D3"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.915"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.845" />

    <EditText
        android:drawablePadding="8dp"
        android:drawableLeft="@drawable/ic_search_gray_24dp"
        android:textColor="@color/content_text_color"
        android:hint="search"
        android:background="@drawable/search_input_style"
        android:id="@+id/search_input"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="24dp"
        android:layout_marginLeft="24dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        android:layout_marginRight="16dp"
        android:ems="10"
        android:inputType="textPersonName"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"/>



</androidx.constraintlayout.widget.ConstraintLayout>

customlist_item_market. xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="8dp">


    <RelativeLayout
        android:id="@+id/item_container_market"
        android:layout_width="385dp"
        android:layout_height="136dp"
        android:layout_marginStart="24dp"
        android:background="@color/card_bg_color"
        android:paddingBottom="16dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent">

        <TextView

            android:id="@+id/textView_item_title_market"
            android:layout_width="207dp"
            android:layout_height="32dp"
            android:layout_alignParentStart="true"
            android:layout_alignParentLeft="true"
            android:layout_alignParentTop="true"
            android:layout_marginStart="112dp"
            android:layout_marginLeft="112dp"
            android:layout_marginTop="44dp"
            android:text="Simple Title Text "
            android:textColor="@color/title_text_color"
            android:textStyle="bold" />

        <TextView
            android:id="@+id/textView_price"
            android:layout_width="69dp"
            android:layout_height="wrap_content"
            android:layout_alignParentStart="true"
            android:layout_alignParentLeft="true"
            android:layout_alignParentTop="true"
            android:layout_marginStart="116dp"
            android:layout_marginLeft="116dp"
            android:layout_marginTop="85dp"
            android:text="TextView" />

        <TextView
            android:id="@+id/textView_productId"
            android:layout_width="69dp"
            android:layout_height="wrap_content"
            android:layout_alignParentStart="true"
            android:layout_alignParentLeft="true"
            android:layout_alignParentTop="true"
            android:layout_marginStart="113dp"
            android:layout_marginLeft="113dp"
            android:layout_marginTop="10dp"
            android:text="TextView" />


    </RelativeLayout>

    <ImageView
        android:id="@+id/imageView_item_market"
        android:layout_width="131dp"
        android:layout_height="137dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="8dp"
        app:layout_constraintEnd_toStartOf="@+id/container"
        app:layout_constraintStart_toStartOf="@+id/container"
        app:layout_constraintTop_toTopOf="@+id/container"
        app:srcCompat="@mipmap/ic_launcher" />
</androidx.constraintlayout.widget.ConstraintLayout>

Кто-нибудь может помочь, пожалуйста? ...:)

1 Ответ

0 голосов
/ 07 мая 2020

Вы видите эти 2 строки в setUpRecyclerViewManual()

........
adapter = new AlternateListAdapter_Market(mData,this.getContext());
marketRecyleView.setAdapter(adapter);
........

Переместите их сюда: 

  private void getDataToArray() {
    productsOfMarketCollectionRef.get().addOnSuccessListener(new OnSuccessListener<QuerySnapshot>() {
      @Override
      public void onSuccess(QuerySnapshot queryDocumentSnapshots) {
        if (queryDocumentSnapshots.isEmpty()) {
          Log.d("checked", "database is empty");
        } else {
          List<productsListOfMarketFirestore> data = queryDocumentSnapshots.toObjects(productsListOfMarketFirestore.class);

          //here.........
          adapter = new AlternateListAdapter_Market(data,this.getContext());
          marketRecyleView.setAdapter(adapter);

          Log.d("checked success:", "ok " + mData);
        }
        ..........
        ..........

Также измените порядок вызовов в fragment

//call this first 
setUpRecyclerViewManual();

//then call this
getDataToArray();
...