Android Accessibility Service not receiving Notification in oreo

Question

I have added android accessibility in my app and it is working fine with pre oreo devices , but in oreo i am not able to receive second onwards notifications for the app .

I can only receive first notification of the app, second notification not able to receive for that app. If i will clear notification from the notification tray then i am able to receive first notification and second onwards not received .

for eg

1. notification1 received from whatsapp , service can read it
2. notification2 received from whatsapp , service can't read it
3. notification3 received from Gmail , service can read it
4. notification4 received from Gmail , service can't read it
5. notification5 received from whatsapp , service can't read it

in short , second onwards notification accessibility ignores in oreo from app .

My Accessibility code ,

    public class NotificationService extends AccessibilityService {

    @Override
    public void onAccessibilityEvent(AccessibilityEvent evt) {
     Toast.makeText(this, "Got event from " + evt.getPackageName(), 
    Toast.LENGTH_SHORT)
            .show();
      }

      @Override
  public void onInterrupt() { }
}

My manifest file :

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

    <service android:name=".NotificationService" android:enabled="true" 
android:permission="android.permission.BIND_ACCESSIBILITY_SERVICE" >
        <meta-data
            android:name="android.accessibilityservice"
            android:resource="@xml/accessibility_service_config" />
        <intent-filter>
            <action android:name="android.accessibilityservice.AccessibilityService" />
        </intent-filter>
    </service>
</application>

Answer 1

The Accessibility service might stop without notifying the user, it's a known issue. Kindly refer the below code to check whether the Service is still running or not.

  // To check if service is enabled
        public boolean isAccessibilitySettingsOn(Context mContext) {
            int accessibilityEnabled = 0;
            final String service = getPackageName() + "/" + CustomAccessiblityService.class.getCanonicalName();
            try {
                accessibilityEnabled = Settings.Secure.getInt(
                        mContext.getApplicationContext().getContentResolver(),
                        android.provider.Settings.Secure.ACCESSIBILITY_ENABLED);
                Log.v(getString(R.string.app_name), "accessibilityEnabled = " + accessibilityEnabled);

                //accessibilityEnabled = Settings.Secure.getInt(this.getContentResolver(), Settings.Secure.ACCESSIBILITY_ENABLED);

            } catch (Settings.SettingNotFoundException e) {
                Log.e(getString(R.string.app_name), "Error finding setting, default accessibility to not found: "
                        + e.getMessage());
            }
            TextUtils.SimpleStringSplitter mStringColonSplitter = new TextUtils.SimpleStringSplitter(':');

            if (accessibilityEnabled == 1) {
                Log.v(getString(R.string.app_name), "***ACCESSIBILITY IS ENABLED*** -----------------");
                String settingValue = Settings.Secure.getString(
                        mContext.getApplicationContext().getContentResolver(),
                        Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES);
                if (settingValue != null) {
                    mStringColonSplitter.setString(settingValue);
                    while (mStringColonSplitter.hasNext()) {
                        String accessibilityService = mStringColonSplitter.next();

                        Log.v(getString(R.string.app_name), "-------------- > accessibilityService :: " + accessibilityService + " " + service);
                        if (accessibilityService.equalsIgnoreCase(service)) {
                            Log.v(getString(R.string.app_name), "We've found the correct setting - accessibility is switched on!");
                            return true;
                        }
                        else{
                            startActivityForResult(new Intent(Settings.ACTION_ACCESSIBILITY_SETTINGS), 0);
                        }
                    }
                }
            } else {
                Log.v(getString(R.string.app_name), "***ACCESSIBILITY IS DISABLED***");
                startActivityForResult(new Intent(Settings.ACTION_ACCESSIBILITY_SETTINGS), 0);
            }

            return false;
        }

Try to use this method in your service so that you won't miss the notification again and again. Hopefully it will help. Kindly accept the answer if it helps. Thanks.