scana

import android.support.design.widget.AppBarLayout;

import rx.Observable;
import rx.Subscriber;
import rx.Subscription;

/**
 * Helper class for creating Observable of AppBarLayout visibility.
 * Can be easily modified to return Integer values, if one needs to user verticalOffset param directly.
 * See for further info: http://stackoverflow.com/questions/30779667/android-collapsingtoolbarlayout-and-swiperefreshlayout-get-stuck

scana

import android.support.design.widget.AppBarLayout;

import rx.Observable;
import rx.Subscriber;
import rx.Subscription;

/**
 * Helper class for creating Observable of AppBarLayout visibility.
 * Can be easily modified to return Integer values, if one needs to user verticalOffset param directly.
 * See for further info: http://stackoverflow.com/questions/30779667/android-collapsingtoolbarlayout-and-swiperefreshlayout-get-stuck