b4e96b1223
A best UX is to hide pinned header when scrolling up
and show pinned header when scrolling down. It needs
CoordinatorLayout and CoordinatorLayout.Behavior to
control the expected UX.
However, we have an outer CoordinatorLayout in
CollapsingToolbarBaseActivity, if we use CoordinatorLayout
here, the inner one will not pass scroll value to its
parent. We will have no overscroll effect problem and
tool bar no collapsed problem.
This workaround draw pinned header at last and
assign background color to cover content.
Bug: 187376670
Test: manual visual
Settings -> Notifications -> App Settings
Settings > Apps > all apps
Change-Id: I217fba917d11f63d954369c18e0361112ff981fe
62 lines
2.6 KiB
XML
62 lines
2.6 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- Copyright (C) 2012 The Android Open Source Project
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<androidx.constraintlayout.widget.ConstraintLayout
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xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:settings="http://schemas.android.com/apk/res-auto"
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android:layout_width="match_parent"
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android:layout_height="match_parent">
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<androidx.recyclerview.widget.RecyclerView
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android:id="@+id/apps_list"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:clipToPadding="false"
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android:scrollbars="none"
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android:visibility="invisible"
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settings:fastScrollEnabled="true"
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settings:fastScrollHorizontalThumbDrawable="@drawable/thumb_drawable"
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settings:fastScrollHorizontalTrackDrawable="@drawable/line_drawable"
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settings:fastScrollVerticalThumbDrawable="@drawable/thumb_drawable"
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settings:fastScrollVerticalTrackDrawable="@drawable/line_drawable"
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settings:layout_constraintTop_toBottomOf="@id/pinned_header"/>
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<TextView
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android:id="@android:id/empty"
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android:layout_width="match_parent"
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android:layout_height="0dp"
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android:gravity="center"
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android:textAlignment="gravity"
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android:text="@string/no_applications"
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android:textAppearance="?android:attr/textAppearanceLarge"
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android:visibility="invisible"
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settings:layout_constraintTop_toBottomOf="@id/pinned_header"
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settings:layout_constraintBottom_toBottomOf="parent"/>
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<include layout="@layout/loading_container"
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settings:layout_constraintTop_toBottomOf="@id/pinned_header"
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settings:layout_constraintBottom_toBottomOf="parent"/>
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<FrameLayout
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android:id="@+id/pinned_header"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:background="?android:colorBackground"
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settings:layout_constraintTop_toTopOf="parent"/>
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</androidx.constraintlayout.widget.ConstraintLayout>
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