java - 如何为每个 ListView 项目使用不同的背景颜色

Question

friend 们你好，我正在使用自定义 ListView 和这个颜色选择器库'实现'petrov.kristiyan:colorpicker-library:1.1.5'这里是链接库链接 https://github.com/kristiyanP/colorpicker我的问题是，当任何用户单击 ListView 中的任何特定项目时，都会弹出颜色对话框，以便用户可以在此对话框中选择颜色并更改我成功完成的特定项目的背景颜色。但我的问题是，我如何保存此状态以供以后使用，这是我的图片，您知道我真正想要什么吗？

这是我的照片

here is picture of highlight two item with different color

如何保存状态？

我的自定义采用者代码

包 bible.swordof.God;

import android.app.Activity;
import android.content.ContentValues;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.graphics.Color;
import android.opengl.Visibility;
import android.os.Vibrator;
import android.preference.PreferenceManager;
import android.speech.tts.TextToSpeech;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.CompoundButton;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.ToggleButton;

import com.amulyakhare.textdrawable.TextDrawable;
import com.amulyakhare.textdrawable.util.ColorGenerator;


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

import es.dmoral.toasty.Toasty;
import petrov.kristiyan.colorpicker.ColorPicker;

import static android.content.Context.MODE_PRIVATE;
import static android.database.sqlite.SQLiteDatabase.CONFLICT_NONE;
import static android.icu.lang.UCharacter.GraphemeClusterBreak.V;
import static android.support.constraint.Constraints.TAG;
import static android.support.v4.content.ContextCompat.createDeviceProtectedStorageContext;
import static android.support.v4.content.ContextCompat.startActivity;

public class FullverseAdopter extends ArrayAdapter<String> {
    private ALLVERSE activity;

    private List<String> versenumber;
    private List<String>verseid;
    private List<String> verselist;
    private List<String> refernce;
    TextToSpeech textToSpeech;
    private DatabaseHelper mDBHelper;
    private SQLiteDatabase mDb;
    private  int selectcolor;
    ArrayList<String>colors;



    public FullverseAdopter(ALLVERSE context, int resource, List<String> versenumber, List<String> verselist, List<String> refernce, List<String>verseid) {
        super(context, resource);
        this.activity = context;
        this.versenumber = versenumber;
        this.verselist = verselist;
        this.refernce = refernce;
        this.verseid=verseid;
    }


    @Override
    public int getCount() {
        return versenumber.size();
    }

    @Override
    public String getItem(int position) {
        return versenumber.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(final int position, View convertView, final ViewGroup parent) {
        final ViewHolder holder;

        LayoutInflater inflater = (LayoutInflater) activity.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
        // If holder not exist then locate all view from UI file.
        if (convertView == null) {
            // inflate UI from XML file
             convertView = inflater.inflate(R.layout.versedisplayrow, parent, false);
            // get all UI view
            holder = new ViewHolder(convertView);
            // set tag for holder
           holder.versenumber = (TextView) convertView.findViewById(R.id.versenumber);
            holder.verselist = (TextView) convertView.findViewById(R.id.verse);
            holder.addfavoruite=(ToggleButton)convertView.findViewById(R.id.adbookmark);




            convertView.setTag(holder);
        } else {
            // if holder created, get tag from view
            holder = (ViewHolder) convertView.getTag();
        }
        holder.versenumber.setText(versenumber.get(position));

        holder.verselist.setText(verselist.get(position));

        //check if id is exits in db
        if(CheckIsDataAlreadyInDBorNot("highlight","verseid",verseid.get(position)))
        {
            if(verseid.get(position).equals(verseid.get(position))){







            }




        }
else {

        }

holder.linearLayout.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {

        holder.linearLayout.setBackgroundColor(selectcolor);

        mDBHelper = new DatabaseHelper(activity);
        mDb = mDBHelper.getWritableDatabase();
        long delete= mDb.delete("highlight","verseid=?",new String[]{verseid.get(position)});

        Toast.makeText(activity, "Remove highlight", Toast.LENGTH_SHORT).show();

    }
});


//here color picker dialog popup for chosing color

holder.linearLayout.setOnLongClickListener(new View.OnLongClickListener() {


    @Override
    public boolean onLongClick(View v) {
        mDBHelper = new DatabaseHelper(activity);
        mDb = mDBHelper.getWritableDatabase();
        ContentValues contentValues=new ContentValues();
        contentValues.put("verseid",verseid.get(position));
        long check=mDb.insert("highlight",null,contentValues);



        //Toasty.success(activity, "PICK COLOR", Toast.LENGTH_SHORT, true).show();
        Vibrator vibe = (Vibrator)activity.getSystemService(Context.VIBRATOR_SERVICE);
        vibe.vibrate(100);


        //id get

        Toast.makeText(activity, ""+verseid.get(position), Toast.LENGTH_SHORT).show();


        //postion
        //Toast.makeText(activity, ""+getItemId(position), Toast.LENGTH_SHORT).show();

        ColorPicker colorPicker = new ColorPicker(activity);
       colors=new ArrayList<>();
        colors.add("#e0e0eb");
        colors.add("#ccffff");
        colors.add("#ffe6ff");
        colors.add("#ffffcc");
        colors.add("#ccffcc");
        colors.add("#e6f2ff");

        colorPicker.setColors(colors).setColumns(4).setTitle("HIGHLIGHT VERSE").setRoundColorButton(true).setOnChooseColorListener(new ColorPicker.OnChooseColorListener() {
            @Override
            public void onChooseColor(int position, int color) {



                holder.linearLayout.setBackgroundColor(color);



            }

            @Override
            public void onCancel() {

            }
        }).show();






        return false;
    }
});
        /*holder.verselist.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View v) {
                holder.verselist.setBackgroundColor(Color.parseColor("#e0e0eb"));
                return false;
            }
        });*/




        //share verse
        holder.share.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toasty.info(activity, "Sharing a verse.", Toast.LENGTH_SHORT, true).show();
                Intent sendIntent = new Intent();
                sendIntent.setAction(Intent.ACTION_SEND);
                sendIntent.putExtra(Intent.EXTRA_TEXT, refernce.get(position) + ":" + versenumber.get(position) + '\n'   + verselist.get(position));
                sendIntent.setType("text/plain");
                activity.startActivity(sendIntent);

            }
        });

//add in favourite
      holder.addfavoruite.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

                if(isChecked){
                    mDBHelper = new DatabaseHelper(activity);
                    mDb = mDBHelper.getWritableDatabase();
                    ContentValues contentValues=new ContentValues();
                  contentValues.put("id",verseid.get(position));
                  contentValues.put("bookname",refernce.get(position));
                   contentValues.put("versenumber",versenumber.get(position));
                   contentValues.put("verse",verselist.get(position));
                   long check=mDb.insert("favourite",null,contentValues);


                   Log.d("MY_TAG","DB IS NOW "+check);
                   Toasty.success(activity, "Added in favouite", Toast.LENGTH_SHORT, true).show();


                }else {


                    mDBHelper = new DatabaseHelper(activity);
                    mDb = mDBHelper.getWritableDatabase();
                    long delete= mDb.delete("favourite","id=?",new String[]{verseid.get(position)});
                   Toasty.error(activity, "Remove in favouite", Toast.LENGTH_SHORT, true).show();
                }


            }
        });

       /* textToSpeech = new TextToSpeech(activity, new TextToSpeech.OnInitListener() {
            @Override
            public void onInit(int status) {

                if (status == TextToSpeech.SUCCESS) {
                    result = textToSpeech.setLanguage(Locale.ENGLISH);
                } else {

                    Toast.makeText(activity, "YOUR DEVICE NOT SUPPORTED", Toast.LENGTH_SHORT).show();
                }
            }
        });
*/



        //My toggle button








       /* holder.speakverse.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                Toast.makeText(activity, "I AM CLICKED", Toast.LENGTH_SHORT).show();

                if (result == TextToSpeech.LANG_NOT_SUPPORTED || result == TextToSpeech.LANG_MISSING_DATA) {

                    Toast.makeText(activity, "Language not supported or Missing", Toast.LENGTH_SHORT).show();

                } else {


                    textToSpeech.speak(verselist.get(position), TextToSpeech.QUEUE_FLUSH, null);

                }
            }
        });*/




        return convertView;
    }

    static class ViewHolder {
        private TextView versenumber;
        private TextView verselist;

        private ImageView share;
        private  ToggleButton addfavoruite;
        private ImageView speakverse;
        private LinearLayout linearLayout;

        public ViewHolder(View v) {
            versenumber = (TextView) v.findViewById(R.id.versenumber);
            verselist = (TextView) v.findViewById(R.id.verse);
           share = (ImageView) v.findViewById(R.id.share);
            /*speakverse = (ImageView) v.findViewById(R.id.speakverse);*/
        addfavoruite=(ToggleButton)v.findViewById(R.id.adbookmark);
        linearLayout=(LinearLayout)v.findViewById(R.id.layout);



        }


    }
    public boolean CheckIsDataAlreadyInDBorNot(String TableName,  String dbfield, String fieldValue) {

        mDBHelper = new DatabaseHelper(activity);
        mDb = mDBHelper.getReadableDatabase();
        String Query = "Select * from " + TableName + " where " + dbfield + " = " + fieldValue;
        Cursor cursor = mDb.rawQuery(Query, null);
        if(cursor.getCount() <= 0){
            cursor.close();

           // Toast.makeText(activity, "false", Toast.LENGTH_SHORT).show();
            return false;
        }else {

              // Toast.makeText(activity, "TRUE", Toast.LENGTH_SHORT).show();

        }
        cursor.close();


        return true;
    }

}

Answer 1

我建议将所有项目属性放在一个对象中，并向其添加背景颜色。

选择颜色后，只需将其保存到您的 verse 对象中，并在创建 View 时对其进行设置。还将背景添加到您的 ViewHolder。

public class Verse {
    private String versenumber;
    private String verseid;
    private String verselist;
    private String refernce;
    private int backgroundColor

    // Getters and setters
}

public class FullverseAdopter extends ArrayAdapter<Verse> {
    private ALLVERSE activity;

    private List<Verse> verse;
    TextToSpeech textToSpeech;
    private DatabaseHelper mDBHelper;
    private SQLiteDatabase mDb;
    private  int selectcolor;
    ArrayList<String>colors;


    public FullverseAdopter(ALLVERSE context, int resource, List<Verse> verse) {
        super(context, resource);
        this.activity = context;
        this.verse = verse;
    }

    // The rest of your code
}