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→Designing the User Interface
On the form factors screen, enable the Phone and Tablet option and set the minimum SDK setting to API 26: Android 8.0 (Oreo). Continue to proceed through the screens, requesting the creation of an Empty Activity named AudioAppActivity with a corresponding layout resource file named activity_audio_app.
== Designing Designing the User Interface ==
Once the new project has been created, select the activity_audio_app.xml file from the Project tool window and with the Layout Editor tool in Design mode, select the “Hello World!” TextView and delete it from the layout.
[[Image:android_studio_22_audio_ui.png.png]]
== Checking for Microphone Availability ==
