RemoteViewsReader

Read RemoteViews information with some black magic way.

Reference

See RemoteViews.

Caution

As of Android Pie, the system will notify you that you are using hidden APIs (in other words, non-SDK APIs) via reflection. This library aims to read remote view properties by reflection so you will see bunch of warnings if you use this library. And the severity of the warning may change in the future.

Usage

Read informations

You can read RemoteViews information like this.

public class NotificationWatcher extends NotificationListenerService {
  @TargetApi(Build.VERSION_CODES.KITKAT)
  @Override
  public void onNotificationPosted(StatusBarNotification sbn) {
    super.onNotificationPosted(sbn);
    RemoteViews remoteViews = sbn.getNotification().contentView;
    RemoteViewsInfo info = RemoteViewsReader.read(this, remoteViews);

    // you can read informations from `info` object.
  }

  @Override
  public void onNotificationRemoved(StatusBarNotification sbn) {
    super.onNotificationRemoved(sbn);
  }
}

RemoteViewsInfo contains following informations.

1. ApplicationInfo: An information about an application which have built this RemoteViews.
2. Actions: A list of actions the application have committed on RemoteViews.
3. Layout Id: An identity of the RemoteViews layout.

Read Actions

The operations for RemoteViews are stored as a list of Action. So you can find the action you want like this.

RemoteViewsInfo info = RemoteViewsReader.read(this, remoteViews);
for (RemoteViewsAction action : info.getActions()) {

}

RemoteViewsAction is an abstract type for each concrete operations. We have several types by default, according to AOSP implementation.

• BitmapRefrectionAction
  Action for RemoteViews#setImageBitmap().
• RefrectionAction
  Action for various methods declared on RemoteViews.
• RefrectionWithoutParamsAction
  Action for various methods without any parameters declared on RemoteViews.
• SetDrawableParamsAction
  Action for RemoteViews#setDrawableParameters().
• SetEmptyViewAction
  Action for RemoteViews#setEmptyView().
• SetOnClickFillInIntentAction
  Action for RemoteViews#setOnClickFillInIntent().
• SetOnClickPendingIntentAction
  Action for RemoteViews#setOnClickPendingIntent().
• SetPendingIntentTemplateAction
  Action for RemoteViews#setPendingIntentTemplate().
• SetRemoteViewsAdapterIntentAction
  Action for RemoteViews#setRemoteAdapter().
• SetRemoteViewsAdapterListAction
  Action for RemoteViews#setRemoteAdapter().
• TextViewDrawableAction
  Action for RemoteViews#setTextViewCompoundDrawables() and RemoteViews#setTextViewCompoundDrawablesRelative(), .
• TextViewDrawableColorFilterAction
  Action for RemoteViews#setTextViewCompoundDrawablesRelativeColorFilter().
• TextViewSizeAction
  Action for RemoteViews#setTextViewTextSize().
• ViewGroupAction
  Action for RemoteViews#addView() and RemoteViews#remoteView().
• ViewPaddingAction
  Action for RemoteViews#setViewPadding().

If you would like to use the specific type of action, you can deal with it like this.

RemoteViewsInfo info = RemoteViewsReader.read(this, remoteViews);
for (RemoteViewsAction action : info.getActions()) {
  if (!(action instanceof BitmapRefrectionAction))
    continue;
  BitmapRefrectionAction concrete = (BitmapRefrectionAction)action;
  Bitmap bmp = concrete.getBitmap();
}

Limitations

Currently this library contains default actions in AOSP. I've found several types of additional customized actions on some devices, and they are not supported now.

Download

Via Gradle

implementation 'com.github.keithyokoma:RemoteViewsReader:1.3.0@aar'

License

Apache License v2

Copyright (C) 2015 KeithYokoma, Inc. All rights reserved.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use
this file except in compliance with the License. You may obtain a copy of the
License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed
under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.