ExpandableLayout
Expandable LinearLayout 
Setup
Dependency
allprojects {
repositories {
...
maven {
url 'https://jitpack.io'
}
}
}
dependencies {
compile 'com.github.iammert:ExpandableLayout:1.4.1'
}
Layout
<iammert.com.expandablelib.ExpandableLayout
android:id="@+id/el"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:parentLayout="@layout/layout_parent"
app:childLayout="@layout/layout_child"/>Set renderer
expandableLayout.setRenderer(new ExpandableLayout.Renderer<FruitCategory, Fruit>() {
@Override
public void renderParent(View view, FruitCategory model, boolean isExpanded, int parentPosition) {
((TextView) view.findViewById(R.id.tvParent)).setText(model.name);
}
@Override
public void renderChild(View view, Fruit model, int parentPosition, int childPosition) {
((TextView) view.findViewById(R.id.tvChild)).setText(model.name);
}
}
);
Set listeners
expandableLayout.setExpandListener(new ExpandCollapseListener.ExpandListener<FruitCategory>() {
@Override
public void onExpanded(int parentIndex, FruitCategory parent, View view) {
//Layout expanded
}
}
);
expandableLayout.setCollapseListener(new ExpandCollapseListener.CollapseListener<FruitCategory>() {
@Override
public void onCollapsed(int parentIndex, FruitCategory parent, View view) {
//Layout collapsed
}
}
);
Add section or children
Section<FruitCategory, Fruit> section = new Section<>();
//defaut is false section.expanded = true; FruitCategory fruitCategory = new FruitCategory("Fruits");
Fruit fruit1 = new Fruit("Apple");
Fruit fruit2 = new Fruit("Orange");
section.parent = fruitCategory; section.children.add(fruit1);
section.children.add(fruit2);
expandableLayout.addSection(section);
expandableLayout.addChild(fruitCategory, new Fruit("Grape"));
License
Copyright 2017 Mert ?im?ek. 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.