Android Programming - Snackbar

1. Add dependencies (build.gradle 'app level')
 implementation 'com.android.support:design:28.0.0-rc02'
 implementation 'com.android.support:coordinatorlayout:28.0.0-rc02'

2. Add method show snackbar (SnackbarActivity.java)
 @OnClick(R.id.btnShowSnackbar)
    public void showSnackbar(){
        Snackbar snackbar = Snackbar.make(layout, "Show some message",
                                        Snackbar.LENGTH_LONG);
        snackbar.show();
 }

3. add coordinatorlaout (activity_snack_bar.xml)
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/layout"
    tools:context=".SnackBarActivity">

</android.support.design.widget.CoordinatorLayout>

4. Bind view in SnackbarActivity.java
	@BindView(R.id.layout) CoordinatorLayout layout;