Android: Catch Other Apps Notifcations With Accessibility Service

NotificationService.java

package su.whs.notifications;

import android.accessibilityservice.AccessibilityService;
import android.accessibilityservice.AccessibilityServiceInfo;
import android.app.Notification;
import android.view.accessibility.AccessibilityEvent;

public class NotificationService extends AccessibilityService {
        @Override
        public void onAccessibilityEvent(AccessibilityEvent event) {
                System.out.println("onAccessibilityEvent");
                if (event.getEventType() == AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED) {
                        if ("<application-package-id>".equals(event.getPackageName())) {
                                Notification e = (Notification) event.getParcelableData();
                                handleNotify(event.getPackageName().toString(),e);
                        }
                }
        }
        
        @Override
        protected void onServiceConnected() {
                System.out.println("onServiceConnected");
                AccessibilityServiceInfo info = new AccessibilityServiceInfo();
                info.eventTypes = AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED;
                info.notificationTimeout = 100;
                info.feedbackType = AccessibilityEvent.TYPES_ALL_MASK;
                setServiceInfo(info);
        }

        @Override
        public void onInterrupt() {
                System.out.println("onInterrupt");
        }
        
        private void handleNotify(String packageName, Notification e) {
            // handle notification for packageName    
            ...
        }

}