Androidの通知領域ボタンで動作分け(singleTaskで多重起動防止)

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout 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"
    android:fitsSystemWindows="true"
    tools:context="com.quitsq.notify3button.MainActivity">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:popupTheme="@style/AppTheme.PopupOverlay" />

    </android.support.design.widget.AppBarLayout>

    <include layout="@layout/content_main" />

</android.support.design.widget.CoordinatorLayout>

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.quitsq.notify3button">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name"
            android:launchMode="singleTask"
            android:theme="@style/AppTheme.NoActionBar">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

MainActivity.java

package com.quitsq.notify3button;

import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v4.app.NotificationCompat;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    private static NotificationManager mNotificationManager;
    TextView text;

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

        mNotificationManager = (NotificationManager) getSystemService(Service.NOTIFICATION_SERVICE);
        mNotificationManager.cancelAll();
        sendNotification();

        text = (TextView) findViewById(R.id.text);

        Intent intent = getIntent();
        int type = intent.getIntExtra("type", 0);
        text.setText("type:" + type);
        doSomething(type);
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        mNotificationManager.cancelAll();
    }

    protected void onNewIntent(Intent intent) {
        super.onNewIntent(intent);
        int type = intent.getIntExtra("type", 0);
        text.setText("type:" + type);
        doSomething(type);
    }
    
    private void doSomething(int type) {
      switch (type){
            case 0:
                text.setText("type 0:" + type);
                break;
            case 1:
                text.setText("type 1:" + type);
                break;
            case 2:
                text.setText("type 2:" + type);
                break;
            case 3:
                text.setText("type 3:" + type);
                break;
            default:
                break;
        }
    }

    private void sendNotification() {
        
        Intent intent1 = new Intent(this, MainActivity.class);
        intent1.putExtra("type",1);
        PendingIntent pendingIntent1 = PendingIntent.getActivity(getApplicationContext(), 1, intent1, PendingIntent.FLAG_UPDATE_CURRENT);

        Intent intent2 = new Intent(this, MainActivity.class);
        intent2.putExtra("type",2);
        PendingIntent pendingIntent2 = PendingIntent.getActivity(getApplicationContext(), 2, intent2, PendingIntent.FLAG_UPDATE_CURRENT);

        Intent intent3 = new Intent(this, MainActivity.class);
        intent3.putExtra("type",3);
        PendingIntent pendingIntent3 = PendingIntent.getActivity(getApplicationContext(), 3, intent3, PendingIntent.FLAG_UPDATE_CURRENT);

        NotificationCompat.Builder builder = new NotificationCompat.Builder(this)
                .setSmallIcon(android.R.drawable.ic_dialog_info)
                .setContentTitle("Title")
                .setContentText("text")
                .addAction(0,"Type1", pendingIntent1)
                .addAction(0,"Type2", pendingIntent2)
                .addAction(0,"Type3", pendingIntent3)
                .setAutoCancel(false)
                .setOngoing(false);
        mNotificationManager.notify(0, builder.build());
    }
}