[안드로이드] Notification 알림창에 댓글(Reply) 기능 추가

2020/12/28 - [안드로이드] - [안드로이드]Notification 알림창에 액션기능 추가하기

이번 시간에는 알림창에 reply(댓글) 기능을 넣어서 메시지를 화면에 보내보도록 하겠습니다.

알림창 아래에 reply 액션을 넣고 액션을 클릭하면 메시지를 입력할 수 있습니다.

메시지를 입력하고 보내면 화면에 메시지가 전송이 됩니다.

1. 메인화면 구현(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">

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="알림 호출"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>

2. 메인기능 구현(MainActivity.java)

import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.NotificationCompat;
import androidx.core.app.NotificationManagerCompat;
import androidx.core.app.RemoteInput;

import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;

import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    public final String CHANNEL_ID = "my_notification_channel";
    public static final  int NOTIFICATION_ID = 101;

    public static final String TEXT_REPLY = "text_reply";

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

        Button notificationBtn = findViewById(R.id.button);
        notificationBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                displayNotification(v);
            }
        });
    }


    //알림 설정
    public void displayNotification(View v){

        createNotificationChannel();

        //MainActivity 설정
        Intent mainIntent = new Intent(this, MainActivity.class);
        mainIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK|Intent.FLAG_ACTIVITY_CLEAR_TASK);
        PendingIntent MainPendingIntent = PendingIntent.getActivity(this , 0, mainIntent, PendingIntent.FLAG_ONE_SHOT);


        //알림설정
        NotificationCompat.Builder builder = new NotificationCompat.Builder(this, CHANNEL_ID);
        builder.setSmallIcon(R.drawable.ic_sms);
        builder.setContentTitle("알림예제");
        builder.setContentText("알림이 왔습니다.");
        builder.setPriority(NotificationManagerCompat.IMPORTANCE_DEFAULT);
        builder.setAutoCancel(true);
        builder.setContentIntent(MainPendingIntent);


        //버전이 누가(7.0)이거나 누가보다 높으면
        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.N){

            RemoteInput remoteInput = new RemoteInput.Builder(TEXT_REPLY).setLabel("Reply").build();

            //인텐트 생성
            Intent replyIntent = new Intent(this, RemoteRecevier.class);

            //플래그 설정
            replyIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);

            //펜딩 인텐드 생성
            PendingIntent replyPendingIntent = PendingIntent.getActivity(this, 0, replyIntent, PendingIntent.FLAG_ONE_SHOT);

            //액션 설정
            NotificationCompat.Action action = new NotificationCompat.Action.Builder(R.drawable.ic_sms, "Reply"
            ,replyPendingIntent).addRemoteInput(remoteInput).build();

            //액션 추가
            builder.addAction(action);
        }


        NotificationManagerCompat notificationManagerCompat = NotificationManagerCompat.from(this);
        notificationManagerCompat.notify(NOTIFICATION_ID, builder.build());
    }

    //채널 셋팅
    private void createNotificationChannel(){

        //오레오부터는 알림을 채널에 등록해야 한다.

        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O){
            CharSequence name = "채널이름";
            String description = "채널설명";
            int importance = NotificationManager.IMPORTANCE_DEFAULT;

            //채널생성
            NotificationChannel notificationChannel = new NotificationChannel(CHANNEL_ID, name, importance);

            notificationChannel.setDescription(description);

            //알림매니저 생성
            NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

            //알림매니저에 채널등록록
           notificationManager.createNotificationChannel(notificationChannel);
        }
    }
}

3. 댓글 액티비티 만들기

액티비티 이름은 RemoteReceiver 로 만들었습니다.

3-1 댓글 액티비티 화면구현(activity_remote_receiver.xml)

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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=".RemoteRecevier">

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:textSize="30sp"
        android:text="TextView" />
</RelativeLayout>

3-2 댓글 액티비티 코드구현(RemoteReceiver.java)

import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.RemoteInput;
import android.app.NotificationManager;
import android.os.Bundle;
import android.widget.TextView;

public class RemoteRecevier extends AppCompatActivity {

    private TextView textView;

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

        textView = findViewById(R.id.textView);

        Bundle remoteReply = RemoteInput.getResultsFromIntent(getIntent());

        if(remoteReply != null){

            String message = remoteReply.getCharSequence(MainActivity.TEXT_REPLY).toString();
            textView.setText(message);
        }

        NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        notificationManager.cancel(MainActivity.NOTIFICATION_ID);
    }
}

4. 실행화면