You need to use the “Sign Developer Tools Signature” button in the Developer Tools settings pane. Click here: as well. If you do not know how to configure the signature, scroll to the bottom of this post to find a guide. Click Apply. Next, open your project in Android Studio. Navigate to the Build > Build Bundle(s) section. Open the APK folder that you've just generated and select the app's target to build to. Click Execute. You can see your build output in the console at the top right. Your APK will now have a Developer Tools signature on it. If you just want to test your build, it's enough to click Apply once again. The same process is repeated with a different target name, e.g. Build APK. Now that you have an APK you can share or redistribute. Note you still need to add the signature (you can do this with the key found in the SDK manager), but you can just run the app, and you'll see it has added the signature now. Android Studio offers various tools for generating signing certificates. I have an in-depth tutorial about these here. Sep 16, 2023 — Generate unsigned APK in Android studio. Step 1: Download the APK(s) in the desired format in the right sidebar on the right tab. Step 2: In the Android Studio project file (right sidebar), go to Build > Build Bundle(s)/APK(s) folder. Step 3: Drag the APKs to Build > Build Bundle(s) > Build APK(s). Step 4: Build and run your project in Android Studio · Click Apply. Now select your build type in the IDE: Click Run to Test — An example Android Debug Bridge Project Sep 11, 2023 — Android Studio supports unsigned APK creation. Dec 17, 2023 — I have now found an excellent tool to make this process trivial, namely an app signing tool based off of this. This application not only allows you to generate unsigned and signed APKs (and make them executable), but also allows you to upload unsigned APKs to Google Play and download signed APKs from Google Play. I've been using the 'Signing' App to generate my Android developer certificates, though there are various apps out there which can also make this process easier.