Event Noti

package com.seesharp.app.sample;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;

import java.util.Date;
import java.util.Locale;

import android.app.DatePickerDialog;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.TimePickerDialog;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;

import android.os.Build;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.annotation.RequiresApi;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.app.NotificationCompat;

import android.text.TextUtils;
import android.util.Log;
import android.view.Menu;
import android.view.View;

import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextClock;
import android.widget.TimePicker;
import android.widget.Toast;



public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    private static final int MY_NOTIFICATION_ID = 12345;
    private static final int MY_REQUEST_CODE = 100;

    TextClock TextClockId;
    ArrayList<String> items = new ArrayList<>(), items1 = new ArrayList<>();
    ArrayAdapter<String> adapter, adapter1;

    ListView l, l1;
    EditText et, editText2;
    Button mAdd, mDelete, btn_date, btn_time;

    SharedPreferences prfs, prf1s;
    public static final String MY_PREFS_NAME = "MyPrefsFile";
    Editor edit, edit1;
    Calendar dateTime = Calendar.getInstance();
    private Calendar cCarlendar = Calendar.getInstance();
    private SimpleDateFormat format = new SimpleDateFormat("dd-MM-yyyy h:mm aa", Locale.ENGLISH);

    @RequiresApi(api = Build.VERSION_CODES.KITKAT)
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        //''this.requestWindowFeature(Window.FEATURE_NO_TITLE);

        setContentView(R.layout.activity_main);
        initialize();

        prfs = PreferenceManager.getDefaultSharedPreferences(this);
        prf1s = getSharedPreferences(MY_PREFS_NAME, MODE_PRIVATE);

        edit = prfs.edit();
        edit1 = prf1s.edit();

        adapter = new ArrayAdapter<String>(this,
                android.R.layout.simple_list_item_1, items);

        adapter1 = new ArrayAdapter<String>(this,
                android.R.layout.simple_list_item_1, items1);

        l.setAdapter(adapter);
        l1.setAdapter(adapter1);

        mDelete.setOnClickListener(this);
        mAdd.setOnClickListener(this);

        for (int i = 0; i < prfs.getInt("counter", 0); i++) {
            items.add(0, prfs.getString(String.valueOf(i), "null"));
        }
        adapter.notifyDataSetChanged();

        for (int j = 0; j < prf1s.getInt("counter1", 0); j++) {
            items1.add(0, prf1s.getString(String.valueOf(j), "null"));
        }
        adapter1.notifyDataSetChanged();


        editText2.setEnabled(false);
        btn_date.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                updateDate();
            }
        });

        btn_time.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                updateTime();
            }
        });

        Thread t = new Thread(){
            @Override
            public void run(){
                try{
                    while(!isInterrupted()){
                        Thread.sleep(1000);
                        runOnUiThread(new Runnable(){
                            @Override
                            public void run(){
                                //Ambil waktu event, then tolak 15 minit. Lepas tu dapat balik date baru (date yg dah ditolak 15 minit),
                                //then compare je balik dgn waktu skrg

                                Date curDate = new Date();
                                for(String dateString: items1){
                                    try {
                                        cCarlendar.setTime(format.parse(dateString));
                                        cCarlendar.add(Calendar.MINUTE, -15);

                                        if(format.format(cCarlendar.getTime()).equals(format.format(curDate))){
                                            //same date and time found
                                            sendNotification(items.get(items1.indexOf(dateString)));
                                        }

                                        Log.i("Check Date", "Event Date - 15:"+format.format(cCarlendar.getTime())+", Current Date: "+format.format(curDate));
                                    } catch (ParseException e) {
                                        e.printStackTrace();
                                    }
                                }
                            }
                        });
                    }
                } catch (InterruptedException e){
                    e.printStackTrace();
                }
            }
        }; t.start();
    }

    private void initialize() {
        btn_date = (Button) findViewById(R.id.datepicker);
        btn_time = (Button) findViewById(R.id.timepicker);
        editText2 = (EditText) findViewById(R.id.editText2);
        et = (EditText) findViewById(R.id.editText1);
        mAdd = (Button) findViewById(R.id.button1);
        mDelete = (Button) findViewById(R.id.button2);
        TextClockId = (TextClock) findViewById(R.id.TextClockId);

        l = (ListView) findViewById(R.id.listView1);
        l1 = (ListView) findViewById(R.id.listView2);
    }


    @Override
    public void onClick(View arg0) {
        // TODO Auto-generated method stub

        switch (arg0.getId()) {

            case R.id.button1:
                addItem();
                break;

            case R.id.button2:
                adapter.clear();
                edit.clear();
                edit.commit();
                // finish();
                adapter1.clear();
                edit1.clear();
                edit1.commit();
                break;

        }

    }

    private void addItem() {

        if (!TextUtils.isEmpty(et.getText().toString())) {
            edit.putString(String.valueOf(items.size()), et.getText().toString());
            edit.putInt("counter", adapter.getCount() + 1);
            edit.commit();

            items.add(0, et.getText().toString());
            adapter.notifyDataSetChanged();

            et.setText("");
        } else {
            Toast.makeText(getBaseContext(), "Field should not be empty!",
                    Toast.LENGTH_LONG).show();
        }

        if (!TextUtils.isEmpty(editText2.getText().toString())) {

            edit1.putString(String.valueOf(items1.size()), editText2.getText().toString());
            edit1.putInt("counter1", adapter1.getCount() + 1);
            edit1.commit();

            items1.add(0, editText2.getText().toString());
            adapter1.notifyDataSetChanged();

            editText2.setText("");
        } else {
            Toast.makeText(getBaseContext(), "Field should not be empty!",
                    Toast.LENGTH_LONG).show();
        }

    }

    private void DeleteItem() {

        if (!("".equals(et.getText().toString()))) {

            //ob = et.getText().toString();
            adapter.notifyDataSetChanged();

            edit.remove(String.valueOf(adapter.getCount()));
            edit.putInt("counter", adapter.getCount() + 1);
            edit.commit();

            et.setText("");


        } else {

            Toast.makeText(getBaseContext(), "Field should not be empty!",
                    Toast.LENGTH_LONG).show();
        }

    }

    private void updateDate() {
        new DatePickerDialog(this, d, dateTime.get(Calendar.YEAR), dateTime.get(Calendar.MONTH), dateTime.get(Calendar.DAY_OF_MONTH)).show();
    }

    private void updateTime() {
        new TimePickerDialog(this, t, dateTime.get(Calendar.HOUR_OF_DAY), dateTime.get(Calendar.MINUTE), true).show();
    }

    DatePickerDialog.OnDateSetListener d = new DatePickerDialog.OnDateSetListener() {
        @Override
        public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {


            dateTime.set(Calendar.YEAR, year);
            dateTime.set(Calendar.MONTH, monthOfYear);
            dateTime.set(Calendar.DAY_OF_MONTH, dayOfMonth);
            updateTextLabel();
        }
    };


    TimePickerDialog.OnTimeSetListener t = new TimePickerDialog.OnTimeSetListener() {
        @Override
        public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
            dateTime.set(Calendar.HOUR_OF_DAY, hourOfDay);
            dateTime.set(Calendar.MINUTE, minute);
            dateTime.set(Calendar.SECOND, 0);
            updateTextLabel();
        }
    };

    private void updateTextLabel() {
        String mq = format.format(dateTime.getTime());
        //String mq1 = format.format(mq);
        editText2.setText(mq);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        //getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }


    public void sendNotification(String msg) {
        Intent intent = new Intent(getApplicationContext(), MainActivity.class);
        PendingIntent pIntent = PendingIntent.getActivity(this,
                MY_REQUEST_CODE, intent, 0);

        NotificationCompat.Builder mBuilder =
                (NotificationCompat.Builder) new NotificationCompat.Builder(getApplicationContext())
                        .setSmallIcon(R.mipmap.ic_launcher)
                        .setContentTitle("REMINDER!!")
                        .setContentText(msg)
                        .setAutoCancel(true)
                        .setContentIntent(pIntent);

        NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        notificationManager.notify(MY_NOTIFICATION_ID, mBuilder.build());
    }
}