从数据库中删除数据后如何刷新listview？

Question

All Transaction Activity is used to to fetch data from database

public class AllTransactionActivity extends MainActivity {

    ArrayList<String> price = new ArrayList<String>();
    ArrayList<String> category = new ArrayList<String>();
    ArrayList<String> date = new ArrayList<String>();
    ArrayList<String> id = new ArrayList<String>();
    ArrayList<String> payment_mode = new ArrayList<String>();
    ArrayList<String> description = new ArrayList<String>();
    RadioButton rb1 , rb2 ;
    ListView listView ;
    Cursor cv;
    LinearLayout list_lay;
    RelativeLayout no_data_lay;
    String date_change;
    Boolean check_btn = false;
    Transactiondata data ;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_all_transaction);
        findViewById();

        Toolbar toolbarTop = (Toolbar) findViewById(R.id.toolbar);
        TextView mTitle = (TextView) toolbarTop.findViewById(R.id.title);
        mTitle.setText("All Transaction");

        data = new Transactiondata(AllTransactionActivity.this);
        data.open();
        cv = data.incomeDisplayData();

            id.clear();
            price.clear();
            category.clear();
            date.clear();
            payment_mode.clear();
            description.clear();

            if (cv.moveToFirst()) {
                do {
                    category.add(cv.getString(cv.getColumnIndex(Transactiondata.KEY_CATEGORY)));
                    id.add(cv.getString(cv.getColumnIndex(Transactiondata.KEY_ID)));
                //    date.add(cv.getString(cv.getColumnIndex(Transactiondata.KEY_DATE)));
                    SimpleDateFormat simpleDateFormate = new SimpleDateFormat("yyyy-MM-dd");
                    Date date1 = null;
                    try {
                        date1 = simpleDateFormate.parse(cv.getString(cv.getColumnIndex(Transactiondata.KEY_DATE)));
                        SimpleDateFormat fmtOut = new SimpleDateFormat("dd-MM-yyyy");

                        date_change = fmtOut.format(date1);
                    } catch (ParseException e) {
                        e.printStackTrace();
                    }

                    date.add(date_change);
                    price.add(cv.getString(cv.getColumnIndex(Transactiondata.KEY_PRICE)));
                    payment_mode.add(cv.getString(cv.getColumnIndex(Transactiondata.KEY_PAYMENT_MODE)));
                    description.add(cv.getString(cv.getColumnIndex(Transactiondata.KEY_DESCRIPTION)));

                } while (cv.moveToNext());

            }else {

                list_lay.setVisibility(View.GONE);
                no_data_lay.setVisibility(View.VISIBLE);
            }

            listView.setAdapter(new DisplayAllDataAdapter(this, AllTransactionActivity.this , check_btn , id , category , date , price , payment_mode , description ));
            cv.close();

    }

    public void findViewById(){

        listView = (ListView)findViewById(R.id.list);
        rb1 =(RadioButton)findViewById(R.id.rb1) ;
        rb2 =(RadioButton)findViewById(R.id.rb2) ;
        no_data_lay = (RelativeLayout)findViewById(R.id.no_data_lay);
        list_lay = (LinearLayout)findViewById(R.id.list_lay);
    }
}

Custom Adapter Class which is used to bind data with list view

package app.dailyexpensemanager.adapters;

import android.app.Activity;
import android.app.Dialog;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Color;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.TextView;

import java.util.ArrayList;

import app.dailyexpensemanager.R;
import app.dailyexpensemanager.activity.EditReminderActivity;
import app.dailyexpensemanager.activity.PaymentTransactionActivity;
import app.dailyexpensemanager.db.Transactiondata;


public class DisplayAllDataAdapter extends BaseAdapter {

    private Context mContext;
    private static Cursor cursor;
    private static Activity activity;
    private static Boolean check_btn;
    private ArrayList<String> category_list;
    private ArrayList<String> date_list;
    private ArrayList<String> id_list ;
    private ArrayList<String> price_list ;
    private ArrayList<String> payment_mode_list ;
    private ArrayList<String> description_list ;

    public DisplayAllDataAdapter(Context cv, Activity activity, Boolean check_btn, ArrayList<String> id, ArrayList<String> category, ArrayList<String> date,
                                 ArrayList<String> price, ArrayList<String> payment_mode, ArrayList<String> description) {

        this.check_btn = check_btn;
        this.id_list = id;
        this.category_list = category;
        this.date_list = date;
        this.price_list = price;
        this.payment_mode_list = payment_mode;
        this.description_list = description;
        this.mContext = cv;
        this.activity = activity;
    }

    public DisplayAllDataAdapter(Context cv, Activity activity,Cursor cursor , Boolean check_btn, ArrayList<String> id, ArrayList<String> category, ArrayList<String> date,
                                 ArrayList<String> price, ArrayList<String> payment_mode, ArrayList<String> description) {

        this.check_btn = check_btn;
        this.id_list = id;
        this.category_list = category;
        this.date_list = date;
        this.price_list = price;
        this.payment_mode_list = payment_mode;
        this.description_list = description;
        this.mContext = cv;
        this.activity = activity;
        this.cursor = cursor;    
    }

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

    @Override
    public Object getItem(int position) {
        return date_list.get(position);
    }

    @Override
    public long getItemId(int position) {
        return 0;
    }

    @Override
    public View getView(int position, View child, ViewGroup parent) {

            final Holder mHolder;
            LayoutInflater layoutInflater = null;
            if (child == null) {
                layoutInflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

                child = layoutInflater.inflate(R.layout.activity_list_all_transaction, null);
                mHolder = new Holder();
                mHolder.txt_category = (TextView) child.findViewById(R.id.category);
                mHolder.txt_date = (TextView) child.findViewById(R.id.date);
                mHolder.txt_id = (TextView) child.findViewById(R.id.id);
                mHolder.txt_price = (TextView) child.findViewById(R.id.price);
                mHolder.txt_payment = (TextView) child.findViewById(R.id.payment);
                mHolder.txt_description = (TextView) child.findViewById(R.id.description);

                child.setTag(mHolder);   
            }
            else {   
                mHolder = (Holder) child.getTag();
            }

            mHolder.txt_category.setText(category_list.get(position));
            mHolder.txt_date.setText(date_list.get(position));
            mHolder.txt_id.setText(id_list.get(position));
            mHolder.txt_price.setText(price_list.get(position));
            mHolder.txt_payment.setText(payment_mode_list.get(position));
            mHolder.txt_description.setText(description_list.get(position));

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

                    v.setBackgroundResource(R.drawable.item_pressed);
                    /*Animation animation1 = new AlphaAnimation(0.3f, 1.0f);
                    animation1.setDuration(2000);
                    v.startAnimation(animation1);*/

                    String price_lv = mHolder.txt_price.getText().toString();
                    String id_lv = mHolder.txt_id.getText().toString();
                    String category_lv = mHolder.txt_category.getText().toString();
                    String payment_lv = mHolder.txt_payment.getText().toString();
                    String date_lv = mHolder.txt_date.getText().toString();
                    String description_lv = mHolder.txt_description.getText().toString();

                    showCustomeDialogBox(mContext, false, price_lv, id_lv, category_lv, payment_lv,
                            date_lv, description_lv);
            //        notifyDataSetChanged();

                }
            }); 
        return child;    
    }

    public class Holder {
        TextView txt_category;
        TextView txt_price;
        TextView txt_id;
        TextView txt_date;
        TextView txt_payment;
        TextView txt_description;
    }

    public static void showCustomeDialogBox(final Context context, final boolean activityVisibility,String price,
                                  final String id , String category , String payment , String date , String description ) {

        final Dialog dialog = new Dialog(context);
        dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
        dialog.setCancelable(true);
        dialog.setContentView(R.layout.activity_custom_dailog);
        Button positivebtn = (Button) dialog.findViewById(R.id.positive);
        Button negativebtn = (Button) dialog.findViewById(R.id.negative);
        LinearLayout category_lay = (LinearLayout) dialog.findViewById(R.id.category_lay);
        TextView dialog_title = (TextView) dialog.findViewById(R.id.dialog_title);
        TextView price_tv = (TextView) dialog.findViewById(R.id.price);
        TextView category_tv = (TextView) dialog.findViewById(R.id.category);
        TextView payment_tv = (TextView) dialog.findViewById(R.id.payment_mode);
        TextView date_tv = (TextView) dialog.findViewById(R.id.date);
        TextView description_tv = (TextView) dialog.findViewById(R.id.description);

        category_lay.setVisibility(View.GONE);
        dialog_title.setText(category);
        price_tv.setText(price);
        category_tv.setText(category);
        payment_tv.setText(payment);
        date_tv.setText(date);
        description_tv.setText(description);

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

                if (!check_btn) {
                    Transactiondata delete = new Transactiondata(context);
                    delete.open();
                    delete.deleteIncomeEntry(id);
                    this.notifyDataSetChanged();
                    delete.close();
                    /*recreate all transaction Activity .... to refresh data ..........*/
                    activity.recreate();
                    dialog.dismiss();

                } else {
                    Transactiondata delete = new Transactiondata(context);
                    delete.open();
                    delete.deleteExpenseEntry(id);
                    this.notifyDataSetChanged();
                    delete.close();
                    /*recreate all transaction Activity .... to refresh data ..........*/
                    activity.recreate();
                    dialog.dismiss();
                }

            }
        });

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

                dialog.dismiss(); 
            }
        });


        dialog.show();
        Window window = dialog.getWindow();
        window.setLayout(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);   
    }   
}

In dialog box code I have done it with recreate activity but I think it is not good solution. Now how to delete and refresh same time listview data only? hlep me :(

Answer 1

Try this,

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

            if (!check_btn) {
                Transactiondata delete = new Transactiondata(context);
                delete.open();
                delete.deleteIncomeEntry(id);
                notifyDataSetChanged();
                delete.close();
                /*recreate all transaction Activity .... to refresh data ..........*/
                activity.recreate();
                dialog.dismiss();

            } else {
                Transactiondata delete = new Transactiondata(context);
                delete.open();
                delete.deleteExpenseEntry(id);
                notifyDataSetChanged();
                delete.close();
                /*recreate all transaction Activity .... to refresh data ..........*/
                activity.recreate();
                dialog.dismiss();
            }

        }
    });

Answer 2

Try to Write mContext.notifyDataSetChanged(); .

After this.

delete.deleteIncomeEntry(id);

mContext.notifyDataSetChanged();

EDIT 1:

Just do this.

this.notifyDataSetChanged();

EDIT 2:

Look your data is deleted from database that is sure. so in your Base Adapter to refresh your List View you need to again call the method which is getting data from database. and then do notifydatasetchanged() .I hope you will understand.

Answer 3

try this code

adapter=new CustomListAdapter(getActivity(),List);
    adapter.notifyDataSetChanged();

    lv.setAdapter(adapter);

And Also add notifyDataSetChanged(); in GetView method below Where you set value.

Answer 4

Check edited first method, just change your showDialog method by below nothing else.

One more thing pass position in your method at last as like below.

     showCustomeDialogBox(mContext, false, price_lv, id_lv, category_lv, payment_lv,
                        date_lv, description_lv, position);

See new DialogBox method below,

 public static void showCustomeDialogBox(final Context context, final boolean activityVisibility,String price,
                              final String id , String category , String payment , String date , String description, int position ) {

    final Dialog dialog = new Dialog(context);
    dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
    dialog.setCancelable(true);
    dialog.setContentView(R.layout.activity_custom_dailog);
    Button positivebtn = (Button) dialog.findViewById(R.id.positive);
    Button negativebtn = (Button) dialog.findViewById(R.id.negative);
    LinearLayout category_lay = (LinearLayout) dialog.findViewById(R.id.category_lay);
    TextView dialog_title = (TextView) dialog.findViewById(R.id.dialog_title);
    TextView price_tv = (TextView) dialog.findViewById(R.id.price);
    TextView category_tv = (TextView) dialog.findViewById(R.id.category);
    TextView payment_tv = (TextView) dialog.findViewById(R.id.payment_mode);
    TextView date_tv = (TextView) dialog.findViewById(R.id.date);
    TextView description_tv = (TextView) dialog.findViewById(R.id.description);

    category_lay.setVisibility(View.GONE);
    dialog_title.setText(category);
    price_tv.setText(price);
    category_tv.setText(category);
    payment_tv.setText(payment);
    date_tv.setText(date);
    description_tv.setText(description);

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

            if (!check_btn) {
                Transactiondata delete = new Transactiondata(context);
                delete.open();
                delete.deleteIncomeEntry(id);
                this.notifyDataSetChanged();
                delete.close();
                /*recreate all transaction Activity .... to refresh data ..........*/
                //activity.recreate();
                //dialog.dismiss();

            } else {
                Transactiondata delete = new Transactiondata(context);
                delete.open();
                delete.deleteExpenseEntry(id);
                this.notifyDataSetChanged();
                delete.close();
                /*recreate all transaction Activity .... to refresh data ..........*/
                //activity.recreate();
                //dialog.dismiss();
            }

          id_list.remove(position);
          category_list.remove(position);
          date_list.remove(position);
          price_list.remove(position);
          payment_mode_list.remove(position);
          description_list.remove(position);

          dialog.dismiss();
          notifyDataSetChanged();

        }
    });

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

            dialog.dismiss(); 
        }
    });


    dialog.show();
    Window window = dialog.getWindow();
    window.setLayout(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);   
}   

Try Below Code It will help you,

First comment your dialog box method, and write below method to use.

   public void deleteData(int position)
   {
      String id = id_list.get(position);
      if (!check_btn) {
                Transactiondata delete = new Transactiondata(context);
                delete.open();
                delete.deleteIncomeEntry(id);
                delete.close();
            } 
            else 
            {
                Transactiondata delete = new Transactiondata(context);
                delete.open();
                delete.deleteExpenseEntry(id);
                delete.close();
           }

          id_list.remove(position);
          category_list.remove(position);
          date_list.remove(position);
          price_list.remove(position);
          payment_mode_list.remove(position);
          description_list.remove(position);

          notifyDataSetChanged();
   }

Now, replace your onCLick method by below.

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

            v.setBackgroundResource(R.drawable.item_pressed);

            deleteData(position);
        }
   });