Setting gravity to TabLayout inside CollapsingToolbarLayout makes it diassapear
I have the following XML layout:
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.v4.view.ViewPager
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior" />
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="192dp"
android:background="@drawable/bg_bucket_list">
<android.support.design.widget.CollapsingToolbarLayout
android:id="@+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="144dp"
app:expandedTitleMarginBottom="@dimen/quadruple_margin"
app:layout_collapseParallaxMultiplier="0.7"
app:layout_scrollFlags="scroll|enterAlwaysCollapsed">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="top"
android:adjustViewBounds="true"
android:scaleType="centerCrop"
android:src="@drawable/bg_bucket_list" />
<View
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentTop="true"
android:layout_gravity="top"
android:background="@color/black_40" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="top"
android:animateLayoutChanges="true"
android:gravity="top">
<TextView
android:id="@+id/text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_marginLeft="@dimen/single_margin"
android:layout_marginStart="@dimen/single_margin"
android:layout_marginTop="@dimen/quadruple_margin"
android:text="@string/my_places_for"
android:textColor="@color/white"
android:textSize="24sp"
android:visibility="gone" />
<TextView
android:id="@+id/sub_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/text"
android:layout_marginLeft="@dimen/single_margin"
android:layout_marginStart="@dimen/single_margin"
android:layout_marginTop="@dimen/quarter_margin"
android:text="@string/pick_category_or_business"
android:textColor="@color/white"
android:textSize="16sp"
android:visibility="gone" />
</RelativeLayout>
<android.support.design.widget.TabLayout
android:id="@+id/tabs"
android:layout_width="match_parent"
android:layout_height="48dp"
android:layout_gravity="bottom"
app:layout_collapseMode="pin"
app:layout_scrollFlags="scroll|enterAlways"
app:tabBackground="@color/transparent"
app:tabGravity="center"
app:tabMode="fixed"
app:tabSelectedTextColor="@color/white"
app:tabTextColor="@color/grey_400" />
<android.support.v7.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="@dimen/abc_action_bar_default_height_material"
app:contentInsetLeft="@dimen/triple_margin"
app:contentInsetStart="@dimen/triple_margin"
app:popupTheme="@style/Theme.AppCompat.NoActionBar"
app:theme="@style/Theme.AppCompat.NoActionBar" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
If you look at TabLayout
, the gravity assigned to it (at the bottom) will make it disappear. If I remove this, it shows up but is fixed at the top.
The reason I don't have one CollapsingToolBarLayout
that matches the size AppBarLayout
is because I experimented with placing TabLayout
in that space and setting flags independently of being CollapsingToolBarLayout
directly as a descendant AppBarLayout
.
Setting it up independent works, but then I have no background ImageView with mask mask mask 60%.
I tried what was suggested here: Similar question
There is no difference.
EDIT: I figured it out and answered my own question: Answer
It's important to know CollapsingToolBarLayout
extends FrameLayout
, so you can add more than 1 to An AppBarLayout
, which extends LinearLayout
. You set the scrolling behavior with the scroll flags available for the child views AppBarLayout
.
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