Android Studio's Device Chooser Is Shown Before Gradle Build Completes

Prior to Android Studio 1.5, the device chooser was shown upon Gradle Build completion. This allowed to use build time to physically configure devices, make any last minute changes

Solution 1:

Per the Android Studio 1.5 Preview 2 release notes:

In 1.5 we've reworked the build+deploy flow such that instead of first building with Gradle and then popping up the "choose a device" dialog, we now immediately ask for a device to push the APK to. Some users were using Run + Cancel to build an APK; we now added a separate "Build APK" action to the Build menu for that purpose.

So the only option to start a build without a selected device is to use the Build APK action.