demo.java

package com.locationupdates.event;

import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.widget.Button;

import com.locationupdates.R;

import java.util.ArrayList;

/**
 * Created by Bas on 11/12/2017 AD.
 */

public class TEst extends AppCompatActivity {

    ArrayList<Model> list = new ArrayList<>();

    Button start_updates_button;

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        start_updates_button = (Button) findViewById(R.id.start_updates_button);
        list.add(new Model("B", "-1.0","P1"));
        list.add(new Model("B", "0","P2"));
        list.add(new Model("B", "-1.0","P3"));
        list.add(new Model("B", "-1.0","P4"));

        start_updates_button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                for (int i = 0; i < list.size(); i++) {

                    Log.e("getStatus",list.get(i).getStatus());
                    Log.e("getStatus",list.get(i).getItemName());

                    if (list.get(i).getStatus().equals("B")) {

                        if (list.get(i).getItemName().equals("-1.0")) {

                            final AlertDialog.Builder builder = new AlertDialog.Builder(TEst.this);
                            builder.setMessage(list.get(i).getItemName() + " : " + list.get(i).getCont())
                                    .setPositiveButton("ปิด", new DialogInterface.OnClickListener() {
                                        public void onClick(DialogInterface dialog, int id) {

                                            dialog.dismiss();
                                        }
                                    });

                            builder.show();

                        } else {

                        }

                    }


                }
            }
        });




    }

}