Добавить har-пакет в папку lib.
В файле gradle в разделе entry добавить следующий код:
implementation fileTree(dir: 'libs', include: ['*.jar', '*.har'])

implementation project(':library')

implementation 'io.openharmony.tpc.thirdlib:ReadMoreTextView:1.0.2'

<com.borjabravo.readmoretextview.ReadMoreTextView
    ohos:id="@+id/text_view"
    ohos:layout_width="match_parent"
    ohos:layout_height="wrap_content"/>

Copyright 2016 Borja Bravo

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,
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See the License for the specific language governing permissions and
limitations under the License.