How to refresh the layout Preview pane in the Android Studio v2.2 IDE? - android-studio

Older versions of Android Studio had a Refresh option in the layout preview in the IDE, but in v2.2 it has vanished. I am finding repeatedly that I update drawable bitmaps in the project with updated files, that new version is not reflected automatically, and I do not see the preview. Problems like this are so common with Android Studio, it's such an utterly infuriating IDE and so flaky, despite the speed it is advancing.
Where did the refresh option go? I can't believe I'm having to actually ask this, but maybe I missed it somewhere obvious!

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Why Are Android Studio Menus Not Working?

I have been using Android Studio for years. Very shortly after upgrading to Android Studio 3.5, the menu options have stopped working. I mean, anything under File, Edit .. all the way to Help. By "stopped working", I mean, I can use the mouse to select, and then .. nothing happens. A colleague suggested to invalidate caches. But invalidate caches itself is under the File menu, so nothing happens when it is selected.
Any ideas? Quitting and starting android studio didn't work. Rebooting didn't work. Changing the java version used to run Android Studio didn't work (it is set to be the same one that gradle is using). Even downloading and installing a fresh copy of Android Studio 3.5 didn't work -> from this, I suspect the problem is a settings problem, but WHICH settings got somehow corrupted? and that survives even with a fresh installation of Android Studio?
To find-in-path, the menu option doesn't work, whereas I can directly use the keyboard shortcut ⇧⌘F and it brings up the find window.
Am running on MacOS Mojave. Java home is /Library/Java/JavaVirtualMachines/jdk1.8.0_221.jdk/Contents/Home
Finally, Android Studio 4.0 came along, and we installed the patch to upgrade to it, and the mysterious problem went away, presumably as a result of the upgrade.

Preview is hidden and does not show

I want to make android app. I have installed androis studio and now i have problem with it. The preview window is hidden
I have tried to fix this problem by updating everything that is possible, but after updating the window is not shown
Image of android studio
You can see that i dont see screen where is running code
Android studio does not show me errors and
API is 22
You are using a bad version of constraint layout I would use the constraint layout from the androidx Library
androidx.constraintlayout.widget.ConstraintLayout I think is the tag
You can try to invalidate Caches and restart like this:
File -> Invalidate Caches/Restart...
After you have done it try to reopen android studio and check your preview.
Another solution that can help you is to switch from the Text tab to the Design tab, this is also the recommended option for working with ConstraintLayout + you can see your preview in your design tab.
And if all of that didn't work you can always reinstall android studio again, this may be the less recommended option but it will most likely solve your problem.

Intellij Idea 2017.3 (and Android studio 3.1) project tool window doesn't show visibility icons anymore

After upgrading to Intellij Idea 2017.3 and to Android Studio 3.1 canary 6 I noticed the project tool window doesn't show the little lock icons next to files anymore.
This is very useful to have a bird's eye view on the visibility of each file (public, package protected...).
Is there a setting to bring them back?
Marco, please check this comment on YouTrack: https://youtrack.jetbrains.com/issue/IDEA-172513#comment=27-2150075

Android Studio 2.2.2 preview and design not showing properly

I have recently installed Android Studio 2.2.2. But in the IDE the preview and design window for xml not showing complete mobile-like appearance that I used to view in previous version, rather it is showing only the mobile screen with rulers around. How can I see full featured preview/design? Pls advice.
I was also looking for this, But its new functionally it will look like this by default. only screen and blueprints, No mobile.
https://developer.android.com/studio/write/layout-editor.html

Device doesn't render in Design tab, Android Studio 1.4

I have a problem with my Android Studio I just updated.
There is no device renders in the design tab, even if I create just a blank aka 'hello wolrd' activity as you can see on this screenshot.
I am absolutely sure I have no running background tasks, my Gradle build is finished. I tried to clean up and then to rebuild project, nothing changes. Am I missing anything?
P.S. I had no problems rendering device on Android Studio 1.3.
Ok, I got it.
I had to update my SDK to 23st version and choose this version while rendering device.
Very simple and truth be told obvious way.

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