Here is the code.
<?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"
android:id="@+id/main"
android:layout_height="match_parent"
android:layout_width="match_parent">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="100dp">
<android.support.design.widget.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_scrollFlags="scroll|enterAlways|exitUntilCollapsed">
<android.support.v7.widget.Toolbar
android:id="@+id/mytoolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:title="@string/app_name"
app:layout_collapseMode="pin"
app:theme="@style/ThemeOverlay.AppCompat.Light"/>
<android.support.design.widget.TabLayout
android:id="@+id/main_tablayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
app:layout_collapseMode="none"/>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<!--<android.support.v4.widget.NestedScrollView-->
<!--android:id="@+id/nestedscroll"-->
<!--android:layout_width="match_parent"-->
<!--android:layout_height="match_parent"-->
<!--android:fillViewport="true"-->
<!--android:scrollbars="horizontal"-->
<!--app:layout_behavior="@string/appbar_scrolling_view_behavior">-->
<android.support.v4.view.ViewPager
android:id="@+id/main_viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior"/>
<!--</android.support.v4.widget.NestedScrollView>-->
<android.support.design.widget.FloatingActionButton
android:id="@+id/main_fab"
android:layout_margin="16dp"
android:src="@android:drawable/ic_media_play"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_anchor="@id/main_viewpager"
app:layout_anchorGravity="bottom|end"/>
</android.support.design.widget.CoordinatorLayout>
1) Toolbar is not visible.
First of all you need define what Toolbar do you want to use in your activity class:
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
Change existing xml code:
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimary"
app:title="@string/app_name"
app:layout_collapseMode="parallax">
</android.support.v7.widget.Toolbar>
to:
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize" //set initial height
app:popupTheme="@style/ThemeOverlay.AppCompat.Light" //this might be also useful
app:title="@string/app_name"
app:layout_collapseMode="parallax" />
2) Collapsing toolbar doesn't collapse at all.
Did your activity using correct theme. Set to your AppBarLayout
:
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
as in this example: include_list_viewpager.xml
3) Viewpager and FAB also not visible if put inside nestedScrollView.
There's no reason to do that. Adding these lines:
android:layout_marginTop="?attr/actionBarSize"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
to ViewPager
should be enough.
Both of them should be direct children of CoordinatorLayout
.
Follow this example: http://blog.nkdroidsolutions.com/collapsing-toolbar-with-tabs-android-example/
If you're new to Material Design or feel a bit lost with some its behaviours, I highly recommend to check Chris Banes Material Design project cheesequare
: https://github.com/chrisbanes/cheesesquare/
Hope it will help