问题
Here is the Docked mode option for "Preview" window.
I removed the docked mode i.e. undocked it. And here is what I got.
There is no more "Docked Mode" option. Now I cannot properly work with designing layouts. Preview automatically hides when I change anything in the layout.
回答1:
Here is the simple solution for reverting to "Docked Mode".
- Select the Preview Window
- Go to Window menu > Active Tool Window
There you go. The Preview window is in Docked Mode. And there is the option for Docked Mode again.
回答2:
Option 1
First open any layout file to set the preview as active window. Then as the first answer says, goto Window in menu > Active Tool Window > Select Pinned Mode, Docked Mode and Split Mode
Option 2
Open a layout file. If the preview window doesn't appear, first make it visible by clicking View in menu > Tool Windows > Preview. Now preview window will appear. Then right click on the Toolbar in the preview window itself (the one with blue color) to show a list of options. Then there, select Pinned Mode, Docked Mode and Split Mode
Regards.
回答3:
The first answer is right, but you must first click Preview Window. Then you go to Window menu > Active Tool Window, choose Docked Window and Pinned Mode.
回答4:
Here is the simple solution for reverting to "Docked Mode" preview:
Go to Window menu > Active Tool Window>Docked Mode(true).
回答5:
It didn't worked for me , But helped me ,Thank you.
Another Solution is 1.Select Preview window(Focus on it) 2.Unselect Floating mode and Pinned mode 3.goto Window -> Active Tool Window -> 4.Unselect Floating mode and Pinned mode 5.Now you can see Docked window option here(Window -> Active Tool Window ->) 6.Select Docked Window
回答6:
If pin mode and docked mode options in window are in a gray color, then First, go to window-> restore default layout-> again go to window->active tool window, pin mode and docked mode options will automatically made visible, so that we can select(or tick) them.
来源：https://stackoverflow.com/questions/30160081/no-docked-mode-option-in-preview-settings-in-android-studio-once-undocked