안드로이드 알람 생성 2가지 방법 (Android Notifications Tutorial with Examples)

아래 예제는 Notification 두 가지 방법을 다루고 있습니다.

1. 진동 및 알림 메세지가 전면 상단에 출력되며, 상태바에서도 아이콘으로 나타나는 방법

2. 진동 및 알림 메세지 없이 맨 위 상태바에서만 조용히 아이콘으로 나타나는 방법

 

 

아래는 원문 출처를 따라하며 요약한 내용입니다.

[출처] https://o7planning.org/10427/android-notification

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1. Empty Activity 로 프로젝트를 생성합니다.

 

 

2. 알림 메세지에 사용할 이미지 파일 두개를 생성합니다.

drawable/icon_notify1.png

drawable/icon_notify1.png

 

 

3. activity_main.xml

<?xml version="1.0" encoding="utf-8"?> <androidx.constraintlayout.widget.ConstraintLayout     xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:app="http://schemas.android.com/apk/res-auto"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     tools:context=".MainActivity" >     <EditText         android:id="@+id/editText_title"         android:layout_width="0dp"         android:layout_height="wrap_content"         android:layout_marginStart="16dp"         android:layout_marginTop="16dp"         android:layout_marginEnd="16dp"         android:ems="10"         android:hint="Title"         android:inputType="textPersonName"         app:layout_constraintEnd_toEndOf="parent"         app:layout_constraintStart_toStartOf="parent"         app:layout_constraintTop_toTopOf="parent" />     <EditText         android:id="@+id/editText_message"         android:layout_width="0dp"         android:layout_height="wrap_content"         android:layout_marginStart="16dp"         android:layout_marginTop="16dp"         android:layout_marginEnd="16dp"         android:ems="10"         android:hint="Message"         android:inputType="textPersonName"         app:layout_constraintEnd_toEndOf="parent"         app:layout_constraintStart_toStartOf="parent"         app:layout_constraintTop_toBottomOf="@+id/editText_title" />     <Button         android:id="@+id/button1"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_marginTop="33dp"         android:text="Send on Channel 1"         app:layout_constraintEnd_toEndOf="parent"         app:layout_constraintStart_toStartOf="parent"         app:layout_constraintTop_toBottomOf="@+id/editText_message" />     <Button         android:id="@+id/button2"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_marginTop="23dp"         android:text="Send On Channel 2"         app:layout_constraintEnd_toEndOf="parent"         app:layout_constraintStart_toStartOf="parent"         app:layout_constraintTop_toBottomOf="@+id/button1" /> </androidx.constraintlayout.widget.ConstraintLayout>

 

4. NotificationApp.java

package org.o7planning.notificationbasicexample; import android.app.Application; import android.app.NotificationChannel; import android.app.NotificationManager; import android.os.Build; public class NotificationApp extends Application  {     public static final  String CHANNEL_1_ID = "channel1";     public static final  String CHANNEL_2_ID = "channel2";     @Override     public void onCreate() {         super.onCreate();         this.createNotificationChannels();     }     private void createNotificationChannels()  {         if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {             NotificationChannel channel1 = new NotificationChannel(                     CHANNEL_1_ID,                     "Channel 1",                     NotificationManager.IMPORTANCE_HIGH             );             channel1.setDescription("This is channel 1");             NotificationChannel channel2 = new NotificationChannel(                     CHANNEL_2_ID,                     "Channel 2",                     NotificationManager.IMPORTANCE_LOW             );             channel1.setDescription("This is channel 2");             NotificationManager manager = this.getSystemService(NotificationManager.class);             manager.createNotificationChannel(channel1);             manager.createNotificationChannel(channel2);         }     } }

 

5. AndroidManifest.xml

<application         android:name=".NotificationApp"         .... > ... </application>

 

6. MainActivity.java

package org.o7planning.notificationbasicexample; import android.app.Notification; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; import androidx.appcompat.app.AppCompatActivity; import androidx.core.app.NotificationCompat; import androidx.core.app.NotificationManagerCompat; public class MainActivity extends AppCompatActivity {     private NotificationManagerCompat notificationManagerCompat;     private EditText editTextTitle;     private EditText editTextMessage;     private Button button1;     private Button button2;     @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);         this.editTextTitle = (EditText) this.findViewById(R.id.editText_title);         this.editTextMessage = (EditText) this.findViewById(R.id.editText_message);         this.button1 = (Button) this.findViewById(R.id.button1);         this.button2 = (Button) this.findViewById(R.id.button2);         this.button1.setOnClickListener(new View.OnClickListener() {             @Override             public void onClick(View view) {                 sendOnChannel1(  );             }         });         this.button2.setOnClickListener(new View.OnClickListener() {             @Override             public void onClick(View view) {                 sendOnChannel2(  );             }         });         //         this.notificationManagerCompat = NotificationManagerCompat.from(this);     }     private void sendOnChannel1()  {         String title = this.editTextTitle.getText().toString();         String message = this.editTextMessage.getText().toString();         Notification notification = new NotificationCompat.Builder(this, NotificationApp.CHANNEL_1_ID)                 .setSmallIcon(R.drawable.icon_notify1)                 .setContentTitle(title)                 .setContentText(message)                 .setPriority(NotificationCompat.PRIORITY_HIGH)                 .setCategory(NotificationCompat.CATEGORY_MESSAGE)                 .build();         int notificationId = 1;         this.notificationManagerCompat.notify(notificationId, notification);     }     private void sendOnChannel2()  {         String title = this.editTextTitle.getText().toString();         String message = this.editTextMessage.getText().toString();         Notification notification = new NotificationCompat.Builder(this, NotificationApp.CHANNEL_2_ID)                 .setSmallIcon(R.drawable.icon_notify2)                 .setContentTitle(title)                 .setContentText(message)                 .setPriority(NotificationCompat.PRIORITY_LOW)                 .setCategory(NotificationCompat.CATEGORY_PROMO) // Promotion.                 .build();         int notificationId = 2;         this.notificationManagerCompat.notify(notificationId, notification);     } }

 

빌딩 이후 apk 파일을 설치, 어플을 실행하면 두 가지 예제의 알림 방식을 구분할 수 있습니다.

 

[출처] https://o7planning.org/10427/android-notification