![]() In Android Studio, to run the app select one of your project’s files and click Run from the toolbar. In the Choose Device window that appears, select the Choose a running device radio button, select your device, and click OK. Return to the previous screen to find Developer options. To make it available, go to Settings > About phone and tap Build number seven times. For more information about the emulator provided by the Android SDK, see Using the Emulator. If it's still not being detected, then toggle USB debugging off and on then grant permissions upon phone reconnection. Grant the required permissions on reconnecting the phone. In this case, tap on Revoke USB debugging authorizations in Developer options. To set up an Android device for development, see Using Hardware Devices. Sometimes, the phone is not detected even with USB Debugging on. Note: On Android 4.2 and newer, Developer options is hidden by default. To run your app in debug mode, you build an APK signed with a debug key and install it on a physical Android device or on the Android emulator. ![]() On most devices running Android 3.2 or older, you can find the option under Settings > Applications > Development. On Android 4.0 and newer, it’s in Settings > Developer options. If you don’t do that before you plug in your phone to the computer over USB, your Android device won’t be listed in available devices when you try to run your app. If you tried to run your app on your Android device, but the device wasn’t listed (although you have your USB drivers installed and Developer options enabled on your device), be sure to enable the “USB debugging” option in Developer options. ![]()
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