What can you do If want to Switch Quickly to another App?!
You should Leave Current app and then find & Select Another app
By using this Application you can create *Floating Shortcuts* of your Favorites Apps, Widget & Website Bookmarks to Open them Quickly.

OK Google! Open Shortcuts
When you open App using OK Google! voice command.
App Will Recover All your Last Used Shortcuts

Features
+ Shortcuts for All Activities & Actions (Press.Hold on Floating Shortcuts)
+ Floating Widgets
+ Group of Shortcuts
+ Bookmarks Shortcut to Website
+ Apps for Time
Shortcut of selected App will create at specific time everyday until user cancel it.
For Example: You Set to Create Floating Shortcut of 'Messaging App' at 10:30.
+ Apps for WiFi
+ Apps for Bluetooth
+ Apps for GPS
You can select Necessary Apps from the List then this App will create Floating Shortcuts of selected Apps When turning on the WiFi, Bluetooth & GPS
+ Auto Remove
It will remove shortcuts that created by Automation Features.

Preferences
+ App Theme Color: Selected Automatically from Wallpaper
+ App Drawer Style
+ App Info Text Color
+ Shortcut Size
+ Auto Transparent

Tip: To Get Activities Shortcut of App Press.Hold Until See List.
Tip: To Remove Shortcut Long-Press on Icon.
Tip: To Remove Widget Long-Press on Widget Name.
Tip: To Resize Widget by Long Press on Launch Button.

/*
* Open Source Project of Floating Shortcut on XDA
* http://forum.xda-developers.com/android/apps-games/app-floating-shortcuts-t3019241
*
* Geeks Empire+
* https://plus.google.com/111005369532093965757
*
* Please Write your Opinion to Improve current Features & to Add New features
*/
/* [ SmApEx4SoPr ] Small Apps extension for Sony products */