ExpandableLayout 支持展开和折叠子视图的Android布局
ExpandableLayout 支持展开和折叠子视图的Android布局
Android 布局(Layout)
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详细介绍
ExpandableLayout
An Android layout class that supports animating the expansion and collapse of its child views.
I built this because all of the available libraries I tested were missing features or behaving unexpectedly in certain cases (e.g. rotation handling).
This library offloads as much work as possible to the parent layout to ensure that the rendering and size calculations behave as expected. This means that even complex features such as LinearLayout's weight
tag are properly supported.
Try the demo
Features
ExpandableLayout supports animating:
- Views with fixed and variable heights:
- "Accordion" expansion (using two expandable layouts)
- RecyclerView items
- Horizontal expansion
Usage
Reference the library from your module's build.gradle:
dependencies {
[...]
compile 'net.cachapa.expandablelayout:expandablelayout:[latest_version]'
}
Add ExpandableLayout
as a container to the layout or views you want to make expandable:
<net.cachapa.expandablelayout.ExpandableLayout
android:id="@+id/expandable_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:el_duration="1000"
app:el_expanded="true"
app:el_parallax="0.5">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="16dp"
android:text="Fixed height" />
</net.cachapa.expandablelayout.ExpandableLayout>
Also supported are el_duration
and el_expanded
tags, for specifying the duration of the animation and whether the layout should start expanded, respectively. el_parallax
can be set to a value between 0 and 1 to control how the child view is translated during the expansion.
To trigger the animation, simply grab a reference to the ExpandableLayout from your Java code and and call either of expand()
, collapse()
or toggle()
.
A full demo of the library is included with the project.
License
Copyright 2016 Daniel Cachapa.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
Footnotes
Gifs were generated using the following script: https://gist.github.com/cachapa/aa829bfc717fc4f1d52c568d7ae8521e