SOS app will send notification to 3 contacts on pressing the button. Notification will include location of the person with custom message. While running the app, include the build.gradle dependences
implementation 'com.google.android.gms:play-services-location:18.0.0'
implementation 'com.google.android.gms:play-services-maps:17.0.1'
implementation 'com.google.android.gms:play-services-places:17.0.0'