Question: I'm developing an Android app with the Android Developer Tool.
Now I tried the new Android Studio, everything works fine if connect my smartphone with the PC and directly run the program in the Android Studio.
But now I want to test the program with other smartphones without connecting them to my PC.

The ADT creates the .apk file under "projectname/bin" every time you compile the program. How I see it at the moment, Android Studio doesn't do that.

So, my question is: Is it possible to create an unsigned .apk file with Android Studio?

Answer: 
The easiest way, I guess:

* Open Gradle tab on the right side
* Double click YourProject/:app/assemble (or assembleDebug)
* You'll find the apk here  

.../YourProject/app/build/outputs/apk/app-debug.apk

![screenshot](https://i.stack.imgur.com/kLe2h.png)
With Android Studio 2.2.3 on OSX I just used the top menu:

```
Build > Build APK

```

It opened Finder with the `.apk` file. This won't generate a signed APK. You can select `Generate Signed APK` from the same menu if needed.