public class MainActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // passing any view here works. It will find a suitable parent to display this, however, it will be the first ViewGroup
        // it finds. 
        GFMinimalNotification.make(rootView, "Some text", GFMinimalNotification.LENGTH_LONG, GFMinimalNotification.TYPE_DEFAULT).show();
    }
}

// Constructors
public static GFMinimalNotification make(@NonNull View view, @NonNull CharSequence text,
                           int duration);
   
public static GFMinimalNotification make(@NonNull View view, int resId, int duration);

public static GFMinimalNotification make(@NonNull View view, @NonNull CharSequence text,
                           int duration, int type);
                                         
public static GFMinimalNotification make(@NonNull View view, int resId, int duration,
                           int type);
                                          
// Set the action to be displayed. Doing so removes the action image, if any
public GFMinimalNotification setAction(int resId, OnActionClickListener listener);
public GFMinimalNotification setAction(CharSequence text, OnActionClickListener listener);

// Sets the text color of the action specified in
public GFMinimalNotification setActionTextColor(ColorStateList colors);
public GFMinimalNotification setActionTextColor(int color);

// Set the action drawable resource to be displayed. Doing so removes the action text, if any
public GFMinimalNotification setActionImage(int resId, OnActionClickListener listener);
public GFMinimalNotification setActionImage(Drawable drawable, OnActionClickListener listener);

// Set the helper drawable resource to be displayed
public GFMinimalNotification setHelperImage(int resId);
public GFMinimalNotification setHelperImage(Drawable drawable);

// Update the text of the notification
public GFMinimalNotification setText(CharSequence message);
public GFMinimalNotification setText(int resId);

// Update the text appearance in the notification
public GFMinimalNotification setTextAppearance(int resId); 

// Update how long the notification is displayed
public GFMinimalNotification setDuration(int duration);

// Set the direction the notification should animate in from. (DIRECTION_TOP or DIRECTION_BOTTOM)
public GFMinimalNotification setDirection(int direction);

// Update the type of notification. (TYPE_DEFAULT, TYPE_ERROR, or TYPE_WARNING)
public GFMinimalNotification setType(int type);

// Set your own background color on the notification
public GFMinimalNotification setCustomBackgroundColor(int customBackgroundColor);

// Set your own tint colors used to tint icons (helper and action)
public GFMinimalNotification setCustomIconTintColor(int customIconTintColor);

// Apply global theme for default type colors and text appearance
<style name="YourAppTheme" parent="Theme.AppCompat">
    ...
    
    // Overrides the default type background color
    <item name="gf_notification_type_default">@color/my_default_color</item>
    
    // Overrides the error type background color
    <item name="gf_notification_type_error">@color/my_error_color</item>
    
    // Overrides the warning type background color
    <item name="gf_notification_type_warning">@color/my_warning_color</item>
    
    // Set your own text appearance 
    <item name="gf_notification_textAppearance">@style/my_text_appearance</item>
    
    // Overrides the default direction to display the notification from
    <item name="gf_notification_direction">top|bottom</item>
    
</style>

// Available Types
/**
 * Show the GFMinimalNotification with the default type settings. This means that the GFMinimalNotification
 * will be have a default background and text color.
 *
 * @see #setType
 */
TYPE_DEFAULT;

/**
 * Show the GFMinimalNotification with the error type settings. This means that the GFMinimalNotification
 * will be have a error background and text color.
 *
 * @see #setType
 */
TYPE_ERROR;

/**
 * Show the GFMinimalNotification with the warning type settings. This means that the GFMinimalNotification
 * will be have a warning background and text color.
 *
 * @see #setType
 */
TYPE_WARNING;

// Available Directions
/**
 * Show the notification from the top of the container layout found
 *
 * @see #setDirection
 */
DIRECTION_TOP;

/**
 * Show the notification from the bottom of the container layout found
 *
 * @see #setDirection
 */
DIRECTION_BOTTOM;

/************
 * Callback *
 ************/
/**
 * Called when the given {@link GFMinimalNotification} is visible.
 *
 * @param notification The notification which is now visible.
 * @see GFMinimalNotification#show()
 */
void onShown(GFMinimalNotification notification) 

/**
 * Called when the given {@link GFMinimalNotification} has been dismissed, either through a time-out,
 * having been manually dismissed, or an action being clicked.
 *
 * @param notification The notification which has been dismissed.
 * @param event The event which caused the dismissal. One of either:
 *              {@link #DISMISS_EVENT_SWIPE}, {@link #DISMISS_EVENT_ACTION},
 *              {@link #DISMISS_EVENT_TIMEOUT}, {@link #DISMISS_EVENT_MANUAL} or
 *              {@link #DISMISS_EVENT_CONSECUTIVE}.
 *
 * @see GFMinimalNotification#dismiss()
 */
void onDismissed(GFMinimalNotification notification, @GFMinimalNotification.Callback.DismissEvent int event)


/*************************
 * OnActionClickListener *
 *************************/
/**
 * Called when the given {@link GFMinimalNotification} action view (text or image) has been clicked.
 * Will dismiss if returned true
 *
 * @param notification The notification which has received the action click (text or image)
 * @return true if you wish to dismiss the notification immediately or false to allow it to dismiss normally
 */
boolean onActionClick(GFMinimalNotification notification)