Does Android allow a background app to open a view over a running application?
<p>I'm making an Android translating application working in the background, reading text shown on the screen, translating and showing translated sentences on the bottom of the screen. The sentences(and maybe some images) must be clicked through.</p>

<p>The thing I'm concerned is that whether I can make a view with messages or images over a running application. Does Android support this kind of function? I'm developing with Android studio. Thanks in advance.</p>