I met a lot of issues related with my problem but nobody I found wanted the behaviour I'm looking for.
I want a view pager with tabs and app bar, when the contained fragments are scrollable and are scrolled (toward bottom), I want the app bar to disapear but leave the tabs, when scrolled toward top, to re-apear. some of these fragments contain a SwipeToRefresh Layout (sometimes it causes problems). I tried a lot of configurations that always leave something wrong.
for now I don't have the collapsing effect (it's always hidden)
<?xml version="1.0" encoding="utf-8"?> <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:fitsSystemWindows="true" tools:context=".MainPagerActivity"> <RelativeLayout android:layout_width="match_parent" android:layout_height="match_parent"> <android.support.design.widget.AppBarLayout android:id="@+id/app_bar_layout" android:layout_width="match_parent" android:layout_height="wrap_content" android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"> <android.support.design.widget.CollapsingToolbarLayout android:id="@+id/collapsing_toolbar" android:layout_width="match_parent" android:layout_height="match_parent" android:fitsSystemWindows="true" app:contentScrim="?attr/colorPrimary" app:expandedTitleMarginEnd="64dp" app:expandedTitleMarginStart="48dp" app:layout_scrollFlags="scroll|enterAlways"> <android.support.v7.widget.Toolbar android:id="@+id/toolbar" android:layout_width="match_parent" android:layout_height="?attr/actionBarSize" android:background="?attr/colorPrimary" app:popupTheme="@style/ThemeOverlay.AppCompat.Light" /> <android.support.design.widget.TabLayout android:id="@+id/tabs" android:layout_width="match_parent" android:layout_height="wrap_content" app:tabGravity="fill" app:tabIndicatorHeight="6dp" app:tabMode="fixed" /> </android.support.design.widget.CollapsingToolbarLayout> </android.support.design.widget.AppBarLayout> <android.support.v4.view.ViewPager android:id="@+id/main_pager" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_below="@id/app_bar_layout" tools:context=".MainPagerActivity" /> </RelativeLayout> <android.support.design.widget.FloatingActionButton android:id="@+id/fab" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="bottom|end" android:layout_margin="@dimen/fab_margin" android:src="@android:drawable/ic_menu_edit" /> and one of my fragment (the scrolling one) :
<?xml version="1.0" encoding="utf-8"?> <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" xmlns:wheel="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.m360learning.app.fragment.MainPagerNewsFeed"> <android.support.v4.widget.SwipeRefreshLayout android:id="@+id/swipeRefreshLayout" android:layout_width="match_parent" android:layout_height="match_parent"> <RelativeLayout android:layout_width="match_parent" android:layout_height="match_parent"> <com.pnikosis.materialishprogress.ProgressWheel android:id="@+id/progress_wheel" android:layout_width="80dp" android:layout_height="80dp" android:layout_centerHorizontal="true" android:layout_centerVertical="true" wheel:matProg_barColor="#5588FF" wheel:matProg_progressIndeterminate="true" /> <android.support.v7.widget.RecyclerView android:id="@+id/recycler" android:layout_width="match_parent" android:layout_height="match_parent" android:scrollbars="vertical" /> </RelativeLayout> </android.support.v4.widget.SwipeRefreshLayout> </FrameLayout> I don't know exactly what I've done but from the time I started write this question the refreshLayout prevent my List from going up (it refreshes instead)..
Thanks
------Correction !
thanks to Sir Ellie Zou, it now works with this xml :
<?xml version="1.0" encoding="utf-8"?> <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:fitsSystemWindows="true" tools:context=".MainPagerActivity"> <android.support.design.widget.AppBarLayout android:id="@+id/app_bar_layout" android:layout_width="match_parent" android:layout_height="wrap_content" android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"> <android.support.v7.widget.Toolbar android:id="@+id/toolbar" android:layout_width="match_parent" android:layout_height="?attr/actionBarSize" android:background="?attr/colorPrimary" app:layout_collapseMode="pin" app:layout_scrollFlags="scroll|enterAlways" app:popupTheme="@style/ThemeOverlay.AppCompat.Light" /> <android.support.design.widget.TabLayout android:id="@+id/tabs" android:layout_width="match_parent" android:layout_height="wrap_content" app:tabGravity="fill" app:tabIndicatorHeight="6dp" app:tabMode="fixed" /> </android.support.design.widget.AppBarLayout> <android.support.v4.view.ViewPager android:id="@+id/main_pager" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainPagerActivity" app:layout_behavior="@string/appbar_scrolling_view_behavior" /> <android.support.design.widget.FloatingActionButton android:id="@+id/fab" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="bottom|end" android:layout_margin="@dimen/fab_margin" android:src="@android:drawable/ic_menu_edit" /> </android.support.design.widget.CoordinatorLayout> and the fragment layout :
<?xml version="1.0" encoding="utf-8"?> <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" xmlns:wheel="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.m360learning.app.fragment.MainPagerNewsFeed"> <com.pnikosis.materialishprogress.ProgressWheel android:id="@+id/progress_wheel" android:layout_width="80dp" android:layout_height="80dp" android:layout_gravity="center" wheel:matProg_barColor="#5588FF" wheel:matProg_progressIndeterminate="true" /> <android.support.v4.widget.SwipeRefreshLayout android:id="@+id/swipeRefreshLayout" android:layout_width="match_parent" android:layout_height="match_parent"> <android.support.v7.widget.RecyclerView android:id="@+id/recycler" android:layout_width="match_parent" android:layout_height="match_parent" android:scrollbars="vertical" /> </android.support.v4.widget.SwipeRefreshLayout> </FrameLayout>