FloatingX
· Android without permission suspension window(App), support global(View), local suspension, support edge adsorption, rebound, custom animation, position saving, windowing and split-screen position repair.
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window floatingx-1.3.4.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.