Androidで今後のすべての通知を読む方法は？

この例は、Androidで今後のすべての通知を読み取る方法について示しています

ステップ1 − Android Studioで新しいプロジェクトを作成し、[ファイル]⇒[新しいプロジェクト]に移動して、新しいプロジェクトを作成するために必要なすべての詳細を入力します。

ステップ2 −次のコードをsrc / MyListener.java

public interface MyListener {
   void setValue (String packageName) ;
}

ステップ3 −次のコードをsrc / MyListener.java

package app.tutorialspoint.com.notifyme ;
import android.content.Context ;
import android.service.notification.NotificationListenerService ;
import android.service.notification.StatusBarNotification ;
import android.util.Log ;
public class NotificationService extends NotificationListenerService {
   private String TAG = this .getClass().getSimpleName() ;
   Context context ;
   static MyListener myListener ;
   @Override
   public void onCreate () {
      super .onCreate() ;
      context = getApplicationContext() ;
   }
   @Override
   public void onNotificationPosted (StatusBarNotification sbn) {
      Log. i ( TAG , "********** onNotificationPosted" ) ;
      Log. i ( TAG , "ID :" + sbn.getId() + " \t " + sbn.getNotification(). tickerText + " \t " + sbn.getPackageName()) ;
      myListener .setValue( "Post: " + sbn.getPackageName()) ;
   }
   @Override
   public void onNotificationRemoved (StatusBarNotification sbn) {
      Log. i ( TAG , "********** onNotificationRemoved" ) ;
      Log. i ( TAG , "ID :" + sbn.getId() + " \t " + sbn.getNotification(). tickerText + " \t " + sbn.getPackageName()) ;
      myListener .setValue( "Remove: " + sbn.getPackageName()) ;
   }
   public void setListener (MyListener myListener) {
      NotificationService. myListener = myListener ;
   }
}

ステップ4 −次のコードをres / menu/menu_main.xmlに追加します。

<?xml version = "1.0" encoding = "utf-8" ?>
<menu xmlns: android = "https://schemas.android.com/apk/res/android"
   xmlns: app = "https://schemas.android.com/apk/res-auto"
   xmlns: tools = "https://schemas.android.com/tools"
   tools :context = ".MainActivity" >
   <item
      android :id = "@+id/action_settings"
      android :orderInCategory = "100"
      android :title = "Settings"
      app :showAsAction = "never" />
</menu>

ステップ5 −次のコードをres / layout/activity_main.xmlに追加します。

<? xml version = "1.0" encoding = "utf-8" ?>
<RelativeLayout xmlns: android = "https://schemas.android.com/apk/res/android"
   xmlns: tools = "https://schemas.android.com/tools"
   android :layout_width = "match_parent"
   android :layout_height = "match_parent"
   android :padding = "16dp"
   tools :context = ".MainActivity" >
   <Button
      android :id = "@+id/btnCreateNotification"
      android :layout_width = "wrap_content"
      android :layout_height = "wrap_content"
      android :layout_alignParentStart = "true"
      android :layout_alignParentTop = "true"
      android :layout_alignParentEnd = "true"
      android :text = "Create Notification" />
   <ScrollView
      android :layout_width = "match_parent"
      android :layout_height = "match_parent"
      android :layout_below = "@+id/btnCreateNotification"
      android :layout_alignStart = "@+id/btnCreateNotification"
      android :layout_alignEnd = "@+id/btnCreateNotification"
      android :layout_alignParentBottom = "true" >
      <TextView
         android :id = "@+id/textView"
         android :layout_width = "match_parent"
         android :layout_height = "wrap_content"
         android :text = "NotificationListenerService Example"
         android :textAppearance = "?android:attr/textAppearanceMedium" />
   </ScrollView>
</RelativeLayout>

ステップ6 −次のコードをsrc / MainActivity.java

package app.tutorialspoint.com.notifyme ;
import android.app.NotificationChannel ;
import android.app.NotificationManager ;
import android.content.Intent ;
import android.os.Bundle ;
import android.support.v4.app.NotificationCompat ;
import android.support.v7.app.AppCompatActivity ;
import android.view.Menu ;
import android.view.MenuItem ;
import android.view.View ;
import android.widget.Button ;
import android.widget.TextView ;
public class MainActivity extends AppCompatActivity implements MyListener {
   private TextView txtView ;
   public static final String NOTIFICATION_CHANNEL_ID = "10001" ;
   private final static String default_notification_channel_id = "default" ;
   @Override
   protected void onCreate (Bundle savedInstanceState) {
      super .onCreate(savedInstanceState) ;
      setContentView(R.layout. activity_main ) ;
      new NotificationService().setListener( this ) ;
      txtView = findViewById(R.id. textView ) ;
      Button btnCreateNotification = findViewById(R.id. btnCreateNotification ) ;
      btnCreateNotification.setOnClickListener( new View.OnClickListener() {
         @Override
         public void onClick (View v) {
            NotificationManager mNotificationManager = (NotificationManager) getSystemService( NOTIFICATION_SERVICE ) ;
            NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(MainActivity. this, default_notification_channel_id ) ;
            mBuilder.setContentTitle( "My Notification" ) ;
            mBuilder.setContentText( "Notification Listener Service Example" ) ;
            mBuilder.setTicker( "Notification Listener Service Example" ) ;
            mBuilder.setSmallIcon(R.drawable. ic_launcher_foreground ) ;
            mBuilder.setAutoCancel( true ) ;
            if (android.os.Build.VERSION. SDK_INT >= android.os.Build.VERSION_CODES. O ) {
               int importance = NotificationManager. IMPORTANCE_HIGH ;
               NotificationChannel notificationChannel = new NotificationChannel( NOTIFICATION_CHANNEL_ID , "NOTIFICATION_CHANNEL_NAME" , importance) ;
               mBuilder.setChannelId( NOTIFICATION_CHANNEL_ID ) ;
               assert mNotificationManager != null;
               mNotificationManager.createNotificationChannel(notificationChannel) ;
            }
            assert mNotificationManager != null;
            mNotificationManager.notify(( int ) System. currentTimeMillis () , mBuilder.build()) ;
         }
      }) ;
   }
   @Override
   public boolean onCreateOptionsMenu (Menu menu) {
      getMenuInflater().inflate(R.menu. menu_main , menu) ; //Menu Resource, Menu
      return true;
   }
   @Override
   public boolean onOptionsItemSelected (MenuItem item) {
      switch (item.getItemId()) {
         case R.id. action_settings :
            Intent intent = new Intent("android.settings.ACTION_NOTIFICATION_LISTENER_SETTINGS" ) ;
            startActivity(intent) ;
            return true;
         default :
            return super .onOptionsItemSelected(item) ;
      }
   }
   @Override
   public void setValue (String packageName) {
      txtView .append( " \n " + packageName) ;
   }
}

ステップ7 −次のコードをAndroidManifest.xmlに追加します

<? xml version = "1.0" encoding = "utf-8" ?>
<manifest xmlns: android = "https://schemas.android.com/apk/res/android"
   package = "app.tutorialspoint.com.notifyme" >
   <uses-permission android :name = "android.permission.VIBRATE" />
   <application
      android :allowBackup = "true"
      android :icon = "@mipmap/ic_launcher"
      android :label = "@string/app_name"
      android :roundIcon = "@mipmap/ic_launcher_round"
      android :supportsRtl = "true"
      android :theme = "@style/AppTheme" >
      <activity android :name = ".MainActivity" >
         <intent-filter>
            <action android :name = "android.intent.action.MAIN" />
            <category android :name = "android.intent.category.LAUNCHER" />
         </intent-filter>
      </activity>
      <service
         android :name = ".NotificationService"
         android :label = "@string/app_name"
         android :permission = "android.permission.BIND_NOTIFICATION_LISTENER_SERVICE" >
         <intent-filter>
            <action
               android :name = "android.service.notification.NotificationListenerService" />
         </intent-filter>
      </service>
   </application>
</manifest>

アプリケーションを実行してみましょう。実際のAndroidモバイルデバイスをコンピューターに接続していると思います。 android studioからアプリを実行するには、プロジェクトのアクティビティファイルの1つを開き、ツールバーの[実行]アイコンをクリックします。オプションとしてモバイルデバイスを選択し、デフォルトの画面を表示するモバイルデバイスを確認します-