مکتب خونه -لیست- cardview- recyclerview

البته این کد اگه استرینگ خالی بنویسی بزنی ادد یوزر اپ کرش میکنه!!

new->valuse resource file -> dimens:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <dimen name="small_space">9dp</dimen>


</resources>

user.java

package ir.ben.practice;

public class user {
    private String name;
    private Integer score;
    private Integer rank;

    public String getName() {
        return name;
    }

    public int getScore() {
        return score;
    }

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

    public void setScore(int score) {
        this.score = score;
    }
}

MainActivity

package ir.ben.practice;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class MainActivity extends AppCompatActivity {
Button bt,sho;
Integer n=9;
user hooloo;
    ranklist rr=new ranklist();

EditText tv,tnumv;
String ss;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        hooloo=new user();
        hooloo.setScore(23);
        hooloo.setName("OKKKK");

        bt=findViewById(R.id.button);
        sho=findViewById(R.id.openlist);
        tv=findViewById(R.id.tv);
        tnumv=findViewById(R.id.num);

        sho.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                MyFragment frag=new MyFragment();
                getSupportFragmentManager().beginTransaction().add(R.id.frame,frag).addToBackStack(null).
                        commit();

            }
        });

        bt.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                hooloo.setName("*"+tv.getText().toString());
                hooloo.setScore(Integer.valueOf("1"+tnumv.getText().toString()));
                GoodShared.getInstance(MainActivity.this).addToWinnersNames(hooloo);
                rr=GoodShared.getInstance(MainActivity.this).getWinnersNames();
                tv.setText("SharedPrefrense ranklist size="+rr.getPeople().size());
                Log.d("starlog","kooft");
                for(user u:rr.getPeople())
                {
                    Log.d("win=    ",u.getName()+"  score: "+u.getScore());
                }
            }
        });
    }
}

Goodshared

package ir.ben.practice;

import android.content.Context;
import android.content.SharedPreferences;
import android.util.Log;

import com.google.gson.Gson;

public class GoodShared {

    private static GoodShared instance=null;
    private SharedPreferences folder=null;
    private SharedPreferences .Editor writer=null;
    private ranklist rn=new ranklist();
    private    Gson gg=new Gson();

    public static GoodShared getInstance(Context context)
    {
        if(instance==null)
            instance=new GoodShared(context);
        return instance;
    }
    private GoodShared(Context context)
    {
        folder=context.getSharedPreferences("winners",Context.MODE_PRIVATE);
        writer=folder.edit();
   //     rn=new ranklist();
    }

    public ranklist getWinnersNames()
    {
        return gg.fromJson(folder.getString("winners",null),ranklist.class);
    }

    public void addToWinnersNames(user hooloo)
    {
        String ss=folder.getString("winners",null);
        if(ss!=null)
            rn=gg.fromJson(ss,ranklist.class);
        else
            rn=new ranklist();
        rn.addnewuser(hooloo);
     //   writer.putString("winners",hooloo.getName());
        writer.putString("winners",gg.toJson(rn,ranklist.class));
        writer.apply();
    }
}

ranklist

package ir.ben.practice;

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

public class ranklist {
    private List<user> people;

    public ranklist() {
        people=new ArrayList<>();
    }


    public void addnewuser(user u){
        people.add(u);
    }


    public List<user> getPeople() {
        return people;
    }

    public void setPeople(List<user> people) {
        this.people = people;
    }
}

Myfragment

package ir.ben.practice;

import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import com.google.gson.Gson;

import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;

public class MyFragment extends Fragment {

    RecyclerView frend;
    assistanUserAdapter assisstan;
    ranklist mellat;

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment, container, false);
    }

    @Override
    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        frend=view.findViewById(R.id.bicycle);

//////        frend=viewfind

        mellat=GoodShared.getInstance(getActivity()).getWinnersNames();
        Comparator<user> how=new Comparator<user>() {
            @Override
            public int compare(user x, user y) {
                if(x.getScore()>y.getScore())
                    return -1;
                else if (x.getScore()<y.getScore())
                    return 1;
                return 0;
            }
        };

        Collections.sort(mellat.getPeople(),how);
        assisstan=new assistanUserAdapter(mellat.getPeople());
        Log.d("mellat  people size","="+mellat.getPeople().size());
       //// assisstan.notifyDataSetChanged();

        frend.setLayoutManager(new LinearLayoutManager(getActivity()));

         frend.setAdapter(assisstan);


   //     TextView tv=view.findViewById(R.id.hey);
     /////   tv.setText(this.getArguments().getString("namekey",null));
    }
}

 

assistantuser(adapter)

package ir.ben.practice;

import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

import java.util.List;

public class assistanUserAdapter extends RecyclerView.Adapter<assistanUserAdapter.ViewHolder> {

    private List<user> hulua;
    public assistanUserAdapter(List<user> items)
    {
        hulua=items;
    }
    @NonNull
    @Override
    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View vv= LayoutInflater.from(parent.getContext()).inflate(R.layout.onerow,parent,false);
        return new ViewHolder(vv);
    }

    @Override
    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
holder.name.setText(hulua.get(position).getName());
holder.rank.setText(String.valueOf(position+1));
holder.score.setText(String.valueOf(hulua.get(position).getScore()));
    }

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

    class ViewHolder extends RecyclerView.ViewHolder{
        public TextView name;
        public TextView score;
        public TextView rank;

        public ViewHolder(View heh){
            super(heh);

            score=heh.findViewById(R.id.adad);
            name=heh.findViewById(R.id.bach);
            rank=heh.findViewById(R.id.rank);
        }
    }


}

 

 

 

fragment.xml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:background="@color/colorAccent"
    android:layout_height="match_parent">

    <TextView
        android:id="@+id/hey"
        android:layout_width="100dp"
        android:layout_height="65dp"
        android:visibility="gone"
        android:layout_alignParentEnd="true"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:layout_marginEnd="149dp"
        android:layout_marginBottom="67dp" />

    <androidx.recyclerview.widget.RecyclerView
        android:layout_width="match_parent"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:id="@+id/bicycle"
        android:layout_height="200dp"/>

</RelativeLayout>

onerow.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView  xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_margin="3dp"
    android:layout_height="wrap_content">


<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
    <TextView
        android:layout_width="0dp"
        android:id="@+id/rank"
        android:paddingLeft="@dimen/small_space"
        android:layout_weight="1"
        android:layout_height="wrap_content"
        />
<ImageView
    android:layout_marginLeft="@dimen/small_space"
    android:layout_width="wrap_content"
    android:src="@drawable/ic_person_black_24dp"
    android:layout_height="wrap_content"
    />

    <TextView
        android:id="@+id/bach"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginRight="40dp"
        android:layout_weight="5"
        android:paddingLeft="@dimen/small_space"
        android:text="Bache" />

    <TextView
    android:id="@+id/adad"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:layout_marginRight="30dp"
    android:text="Emtiaz" />
</LinearLayout>



    </androidx.cardview.widget.CardView>