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AppInventor.org: Democratizing App Building. App Inventor Tutorials and Book Chapters - AppInventor.org: Democratizing App Building. App Inventor in Action. Google App Inventor Tutorial - User experience. Training. Advanced Training. Developers. Authenticating to OAuth2 Services. Google Play services offers a standard authorization flow for all Google APIs and all components of Google Play services.

Authenticating to OAuth2 Services

In addition, you can leverage the authorization portion of the Google Play services SDK to gain authorization to services that are not yet supported in the Google Play services platform by using the access token to manually make API requests or using a client library provided by the service provider. For implementation details, see the sample in <android-sdk>/extras/google-play-services/samples/auth, which shows you how to carry out these basic steps for obtaining an access token. Choosing an Account Google Play services leverage existing accounts on an Android-powered device to gain authorization to the services that you want to use. To obtain an access token, a valid Google account is required and it must exist on the device. NotificationManager. Class Overview Class to notify the user of events that happen.

NotificationManager

This is how you tell the user that something has happened in the background. Notifications can take different forms: A persistent icon that goes in the status bar and is accessible through the launcher, (when the user selects it, a designated Intent can be launched), Turning on or flashing LEDs on the device, or Alerting the user by flashing the backlight, playing a sound, or vibrating. Summary.