Java ListView搜索后排序。安卓工作室_Java_Android_Sorting_Listview_Search

Java ListView搜索后排序。安卓工作室

java android sorting listview search

Java ListView搜索后排序。安卓工作室,java,android,sorting,listview,search,Java,Android,Sorting,Listview,Search,我制作了一个带有搜索和排序的自定义列表视图。“排序”按钮在我搜索之前工作正常，但如果我搜索然后尝试排序，它将不再工作。即使我删除了搜索字段中的所有字符，排序也不再起作用。如何在搜索时进行排序，并且列表因搜索而更改我的活动： package com.example.lihtuaniancardgame; import androidx.appcompat.app.AppCompatActivity; import android.os.Bundle; import android.text.

我制作了一个带有搜索和排序的自定义列表视图。“排序”按钮在我搜索之前工作正常，但如果我搜索然后尝试排序，它将不再工作。即使我删除了搜索字段中的所有字符，排序也不再起作用。如何在搜索时进行排序，并且列表因搜索而更改

我的活动：

package com.example.lihtuaniancardgame;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;

public class HighscoreActivity extends AppCompatActivity {

    ListView listViewHighscore;
    Button buttonSort;
    EditText EditTextSearch;
    ArrayList<IconUserHighscore> usersList = new ArrayList<>();
    userListAdapter adapter;
    boolean sorted = true;
    //userListAdapter ada = new userListAdapter();

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

        EditTextSearch = findViewById(R.id.editTextHighscoreSearch);
        buttonSort = findViewById(R.id.buttonSort);
        listViewHighscore = findViewById(R.id.ListViewHighscore);
        //TEST DATA
        usersList = FormUsersTestData();

        adapter = new userListAdapter(this, R.layout.adapter_view_layout, usersList);
        listViewHighscore.setTextFilterEnabled(true);
        listViewHighscore.setAdapter(adapter);

        EditTextSearch.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) {
                HighscoreActivity.this.adapter.getFilter().filter(s);
                adapter.notifyDataSetChanged();
            }

            @Override
            public void afterTextChanged(Editable s) {

            }
        });

        buttonSort.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (sorted) {
                    sortArrayListDESC();
                } else {
                    sortArrayListASC();
                }
                sorted = !sorted;
                adapter.notifyDataSetChanged();
            }
        });
    }

    private void sortArrayListDESC() {
        adapter.sort(new Comparator<IconUserHighscore>() {
            @Override
            public int compare(IconUserHighscore o1, IconUserHighscore o2) {
                return o1.getNickname().compareTo(o2.getNickname());
            }
        });
    }

    private void sortArrayListASC() {
        adapter.sort(new Comparator<IconUserHighscore>() {
            @Override
            public int compare(IconUserHighscore o1, IconUserHighscore o2) {
                return o2.getNickname().compareTo(o1.getNickname());
            }
        });
    }

    public ArrayList<IconUserHighscore> FormUsersTestData() {
        IconUserHighscore bart = new IconUserHighscore(R.drawable.bart, "Bart", 10);
        IconUserHighscore flanders = new IconUserHighscore(R.drawable.flanders, "Flanders", 0);
        IconUserHighscore homer = new IconUserHighscore(R.drawable.homer, "Homer", 8);
        IconUserHighscore krusty = new IconUserHighscore(R.drawable.krusty, "Krusty", 5);
        IconUserHighscore liza = new IconUserHighscore(R.drawable.liza, "Liza", 9);
        IconUserHighscore maggie = new IconUserHighscore(R.drawable.maggie, "Maggie", 7);
        IconUserHighscore marge = new IconUserHighscore(R.drawable.marge, "Marge", 6);
        IconUserHighscore millhouse = new IconUserHighscore(R.drawable.millhouse, "Millhouse", 1);
        IconUserHighscore otto = new IconUserHighscore(R.drawable.otto, "Otto", 3);
        IconUserHighscore santasLittleHelper = new IconUserHighscore(R.drawable.santaslittlehelper, "Santa's Little Helper", 2);
        IconUserHighscore snowball = new IconUserHighscore(R.drawable.snowball, "Snowball", 4);

        ArrayList<IconUserHighscore> usersList1 = new ArrayList<>();
        usersList1.add(bart);
        usersList1.add(flanders);
        usersList1.add(homer);
        usersList1.add(krusty);
        usersList1.add(liza);
        usersList1.add(maggie);
        usersList1.add(marge);
        usersList1.add(millhouse);
        usersList1.add(otto);
        usersList1.add(santasLittleHelper);
        usersList1.add(snowball);
        usersList1.add(bart);
        usersList1.add(flanders);
        usersList1.add(homer);
        usersList1.add(krusty);
        usersList1.add(liza);
        usersList1.add(maggie);
        usersList1.add(marge);
        usersList1.add(millhouse);
        usersList1.add(otto);
        usersList1.add(santasLittleHelper);
        usersList1.add(snowball);

        return usersList1;
    }
}

列表适配器：

package com.example.lihtuaniancardgame;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;

import java.util.ArrayList;
import java.util.Locale;

public class userListAdapter extends ArrayAdapter<IconUserHighscore> {
    private static final String TAG = "PersonListAdapter";

    private Context mContext;
    int mResource;

    public userListAdapter(@NonNull Context context, int resource, @NonNull ArrayList<IconUserHighscore> objects) {
        super(context, resource, objects);
        mContext = context;
        mResource = resource;
    }

    @NonNull
    @Override
    public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
        int img = getItem(position).getImg();
        String nickname = getItem(position).getNickname();
        int score = getItem(position).getScore();

        IconUserHighscore userHighscore = new IconUserHighscore(img, nickname, score);

        LayoutInflater inflater = LayoutInflater.from(mContext);
        convertView = inflater.inflate(mResource, parent, false);

        ImageView imgIcon = (ImageView) convertView.findViewById(R.id.imageViewIcon);
        TextView tvNickname = (TextView) convertView.findViewById(R.id.textViewUsername);
        TextView tvScore = (TextView) convertView.findViewById(R.id.textViewScore);

        imgIcon.setImageResource(img);
        tvNickname.setText(nickname);
        tvScore.setText(String.valueOf(score));

        return convertView;
    }

    public void filter(String charText){
        charText = charText.toLowerCase(Locale.getDefault());

    }
}

package com.example.lihtuaniancardgame；
导入android.content.Context；
导入android.view.LayoutInflater；
导入android.view.view；
导入android.view.ViewGroup；
导入android.widget.ArrayAdapter；
导入android.widget.ImageView；
导入android.widget.TextView；
导入androidx.annotation.NonNull；
导入androidx.annotation.Nullable；
导入java.util.ArrayList；
导入java.util.Locale；
公共类userListAdapter扩展了ArrayAdapter{
私有静态最终字符串标记=“PersonListAdapter”；
私有上下文；
国际资源；
公共userListAdapter（@NonNull上下文上下文，int资源，@NonNull ArrayList对象）{
超级（上下文、资源、对象）；
mContext=上下文；
mResource=资源；
}
@非空
@凌驾
公共视图getView（int位置，@Nullable视图convertView，@NonNull视图组父级）{
int img=getItem（position）.getImg（）；
字符串昵称=getItem（位置）.Get昵称（）；
int score=getItem（position）.getScore（）；
IconUserHighscore=新IconUserHighscore（img、昵称、分数）；
LayoutFlater充气机=LayoutFlater.from（mContext）；
convertView=充气机。充气（mResource，父项，false）；
ImageView imgIcon=（ImageView）convertView.findViewById（R.id.imageViewIcon）；
TextView TV昵称=（TextView）convertView.findViewById（R.id.textViewUsername）；
TextView tvScore=（TextView）convertView.findViewById（R.id.textViewScore）；
imgIcon.setImageResource（img）；
tv昵称.setText（昵称）；
tvScore.setText（String.valueOf（score））；
返回视图；
}
公共空过滤器（字符串图表文本）{
charText=charText.toLowerCase（Locale.getDefault（））；
}
}

活动xml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".HighscoreActivity"
    android:orientation="vertical"
    android:gravity="center"
    android:padding="16dp">

    <TextView
        android:id="@+id/textViewHighscore"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignWithParentIfMissing="true"
        android:gravity="center"
        android:text="@string/highscore"
        android:textColor="@android:color/holo_green_dark"
        android:textSize="32sp" />

    <EditText
        android:id="@+id/editTextHighscoreSearch"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textSize="20sp"
        android:hint="Search"
        android:gravity="center"
        android:layout_below="@id/textViewHighscore"
       />

    <ListView
        android:id="@+id/ListViewHighscore"
        android:layout_width="match_parent"
        android:layout_above="@id/buttonSort"
        android:layout_below="@id/editTextHighscoreSearch"
        android:layout_height="match_parent"/>

    <Button
        android:id="@+id/buttonSort"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:text="@string/sort_by_nickname" />

</RelativeLayout>

列表项xml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".HighscoreActivity"
    android:orientation="vertical"
    android:gravity="center"
    android:padding="16dp">

    <TextView
        android:id="@+id/textViewHighscore"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignWithParentIfMissing="true"
        android:gravity="center"
        android:text="@string/highscore"
        android:textColor="@android:color/holo_green_dark"
        android:textSize="32sp" />

    <EditText
        android:id="@+id/editTextHighscoreSearch"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textSize="20sp"
        android:hint="Search"
        android:gravity="center"
        android:layout_below="@id/textViewHighscore"
       />

    <ListView
        android:id="@+id/ListViewHighscore"
        android:layout_width="match_parent"
        android:layout_above="@id/buttonSort"
        android:layout_below="@id/editTextHighscoreSearch"
        android:layout_height="match_parent"/>

    <Button
        android:id="@+id/buttonSort"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:text="@string/sort_by_nickname" />

</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".HighscoreActivity"
    android:orientation="vertical"
    android:gravity="center"
    android:padding="16dp">

    <TextView
        android:id="@+id/textViewHighscore"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignWithParentIfMissing="true"
        android:gravity="center"
        android:text="@string/highscore"
        android:textColor="@android:color/holo_green_dark"
        android:textSize="32sp" />

    <EditText
        android:id="@+id/editTextHighscoreSearch"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textSize="20sp"
        android:hint="Search"
        android:gravity="center"
        android:layout_below="@id/textViewHighscore"
       />

    <ListView
        android:id="@+id/ListViewHighscore"
        android:layout_width="match_parent"
        android:layout_above="@id/buttonSort"
        android:layout_below="@id/editTextHighscoreSearch"
        android:layout_height="match_parent"/>

    <Button
        android:id="@+id/buttonSort"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:text="@string/sort_by_nickname" />

</RelativeLayout>