class MainActivity

package com.example.choi.mystudy20;

import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    final static String TAG="MainActivity";
   //다른 노티와  분별할 수 있는 식별자  임의 코드로 정한다.
    final static int NOTI_ID =50;

    Button btnNoti;
    NotificationManager notiManager;


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

        btnNoti=(Button)findViewById(R.id.bt_noti);


        btnNoti.setOnClickListener(listener);
        notiManager=(NotificationManager)getSystemService(NOTIFICATION_SERVICE);

    }


    private void notiStart(){
        Intent intent =new Intent(MainActivity.this, SecondActivity.class);
        intent.putExtra("str", "노티값 (value)");

        PendingIntent pendingIntent=PendingIntent.getActivity(MainActivity.this, 0, intent, 0);

        Notification notification=new Notification.Builder(MainActivity.this)
                .setSmallIcon(R.drawable.d1)
                .setTicker("Noti Message")
                .setContentTitle("Noti 제목")
                .setContentText("Noti 내용")
                .setWhen(System.currentTimeMillis())
                .setContentIntent(pendingIntent)
                .build();


        notiManager.notify(NOTI_ID, notification);

        //두번째 액티비 가기 종료

    }





    View.OnClickListener listener=new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            Log.i(TAG, "onClick v.getId() : " +v.getId());
            switch (v.getId()){
                case R.id.bt_noti:
                    notiStart();
                    break;
            }

        }
    };



}

 

 

R.layout.activity_main

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.choi.mystudy20.MainActivity">

    <Button
        android:text="Noti Start"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="40dp"
        android:id="@+id/bt_noti"
        android:textAllCaps="false"
        android:background="@android:color/holo_green_dark"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:textColor="@android:color/background_light" />

</RelativeLayout>

 

 

 class SecondActivity 

package com.example.choi.mystudy20;

import android.app.NotificationManager;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

public class SecondActivity extends AppCompatActivity {


    NotificationManager notificationManager;
    TextView tv01;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_second);

        notificationManager=(NotificationManager)getSystemService(NOTIFICATION_SERVICE);


        tv01=(TextView)findViewById(R.id.tv01);
        Intent intent=getIntent();
        String s =intent.getStringExtra("str");
        tv01.setText(s);


        //버튼
        Button button1=(Button)findViewById(R.id.button1);
        button1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                Toast.makeText(SecondActivity.this, "노티 종료", Toast.LENGTH_SHORT).show();
                notificationManager.cancel(MainActivity.NOTI_ID);

            }
        });

    }







}

R.layout.activity_second

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_second"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.choi.mystudy20.SecondActivity">

    <Button
        android:text="노티 종료"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="103dp"
        android:id="@+id/button1"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:textStyle="normal|bold"
        android:textAlignment="center"
        android:background="@android:color/holo_blue_light"
        android:textColor="@android:color/background_light" />

    <TextView
        android:text="TextView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:id="@+id/tv01"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        android:textAlignment="center"
        android:textSize="18sp" />
</RelativeLayout>