HOW to change preview?

I have been editing the stupid android studio layout for the last 3 hours, and I cant change the preview!

Preview selection menu

For some reason, android studio layout is stuck on wear square! I just want my layout to be a Nexus 6p, but when I click on that, instead of changing the layout editor phone, it just jumps to my layout-normal xml!

How can I change the phone shown on the layout editor? It is causing me way too much trouble

How do I turn off Preview mode on my Mac?

Open your hard drive on the Mac's desktop and choose View -> Show View Options. Uncheck the Show Icon Preview option and click Use as Defaults at the bottom of the window.

How do I change Preview settings?

Do one of the following: In Manage mode, click Tools | Options | Preview. In Manage mode, right-click in the Preview pane and select Preview Options.

You can change the devices by pressing D from the keyboard into the Preview pane. Previous settings will be set to default when you will restart the studio.

Resize your layout by dragging the bottom-right corner of your layout to the far bottom right of your screen. The "Device in Editor" drop-down will change to "Custom". You should now be able to select any listed device.