如何在共享首选项中保存Listview状态

Question

你好朋友我是新的android使用自定义列表视图与arrayadopter的帮助当用户点击列表视图中的项目它改变项目的颜色现在我想在共享偏好中保存这个状态请帮我怎么做这里是我的代码如果任何专家在这里，请帮助我，我感谢您的帮助，提前感谢您

//这里我希望在项目颜色改变时保存状态

    holder.linearLayout.setOnLongClickListener(new View.OnLongClickListener() {
        @Override
        public boolean onLongClick(View v) {
            Toasty.success(activity, "PICK COLOR", Toast.LENGTH_SHORT, true).show();

          highlight=true;




            Vibrator vibe = (Vibrator)activity.getSystemService(Context.VIBRATOR_SERVICE);
            vibe.vibrate(100);

            ColorPicker colorPicker = new ColorPicker(activity);
            ArrayList<String>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) {





//color is change and want save this in sharedperfence

 holder.linearLayout.setBackgroundColor(color);




                }

                @Override
                public void onCancel() {

                }
            }).show();






            return false;
        }
    });




my full adopter class

package 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 boolean highlight;


public  String ex="switch";

    //check for availabe language
    int result;


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


         holder.linearLayout=(LinearLayout)convertView.findViewById(R.id.layout);

            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));

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



    }
});



holder.linearLayout.setOnLongClickListener(new View.OnLongClickListener() {
    @Override
    public boolean onLongClick(View v) {
        Toasty.success(activity, "PICK COLOR", Toast.LENGTH_SHORT, true).show();

      highlight=true;




        Vibrator vibe = (Vibrator)activity.getSystemService(Context.VIBRATOR_SERVICE);
        vibe.vibrate(100);

        ColorPicker colorPicker = new ColorPicker(activity);
        ArrayList<String>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;
            }
        });*/

//verselist highlight

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






    }
});*/



        //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;
    }
    public  void opecolorpicker(){



    }

}

Answer 1

实现它的一种方法是创建一个这样的新类

class MySaveInstanceClass {
  static ArrayList<Boolean> selectStatusArray;
}

获取数据时初始化此数组

MySaveInstanceClass.selectStatusArray = new ArrayList<>(yourList.size());

此时，数组中的每个值都将为false。 每个列表项都有一个标志。

设置布局的颜色时，只需访问此数组并检查相应的位置。

holder.linearLayout.setOnLongClickListener(new View.OnLongClickListener() {
  @Override
  public boolean onLongClick(View v) {
    if (MySaveInstanceClass.selectStatusArray.get(posiiton) == true) {
      // set background color
    }
  }
}

现在你要保存状态。 您也可以在活动中访问该数组。

在onDestroy()有一个生命周期方法，您可以打开共享首选项并保存它。 它看起来像这样

Set<String> set = myScores.getStringSet("key", null);
//Set the values
Set<String> set = new HashSet<String>();
set.addAll(listOfExistingScores);
scoreEditor.putStringSet("key", set);
scoreEditor.commit();

现在你保存了你的状态。 在onStart()或onCreate()方法中访问相同的共享首选项并获取数组并对类进行初始化

MySaveInstanceClass.selectStatusArray = <array found from shared preference>;