Joseph P Joseph P - 5 months ago 33
Android Question

Toolbar in Collapsing Toolbar Layout not being pinned

EDIT: Updated the tablet gfycat link.

I'm having an issue on my phone layout. Even though I have set app:layout_collapseMode="pin" on my toolbar, it scrolls right off the screen, additionally, the classic 'slide' motion appears to be disabled as well.

Phone Layout:
https://gfycat.com/EnviousPaleFlicker

Tablet Layout:
https://gfycat.com/QueasyPowerlessGrayfox

Here is the layout being inflated by both the detail activity and the detail fragment.

movie_detail.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:fitsSystemWindows="true"
tools:context="com.example.bunny.popularmoviesapp.MovieDetailActivity">

<android.support.design.widget.AppBarLayout
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/toolbar_layout"
android:fitsSystemWindows="true"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways">

<!--alpha here to help make text readable over image-->
<ImageView
android:id="@+id/backdrop_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scaleType="centerCrop"
android:alpha="0.6"
app:layout_collapseMode="parallax"
android:adjustViewBounds="true"/>

<android.support.v7.widget.Toolbar
android:id="@+id/detail_toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />
</android.support.design.widget.CollapsingToolbarLayout>

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

<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">

<TextView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/movie_detail"
style="?android:attr/textAppearanceLarge"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:padding="16dp"
android:textIsSelectable="true"
tools:context="com.example.bunny.popularmoviesapp.MovieDetailFragment" />

<TextView
android:id="@+id/overview_text"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="@dimen/text_margin"
android:layout_below="@id/movie_detail" />
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>

Answer

Replace your AppBarLayout and CollapsingToolbarLayout opening tags with these,

<android.support.design.widget.AppBarLayout
    android:id="@+id/app_bar"
    android:layout_width="match_parent"
    android:layout_height="@dimen/app_bar_height"
    android:fitsSystemWindows="true"
    android:theme="@style/AppTheme.AppBarOverlay">

    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/toolbar_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fitsSystemWindows="true"
        app:contentScrim="?attr/colorPrimary"
        app:layout_scrollFlags="scroll|exitUntilCollapsed">