ExpandableListView的扩展-优快云博客

本文链接：https://blog.youkuaiyun.com/iteye_15461/article/details/81887592

本文介绍了一个简单的ExpandableListView实现示例，包括如何创建适配器并设置组视图及子视图的显示方式。

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public class ExpandableExample extends ExpandableListActivity {
@Override
public void onCreate() {
super.onCreate(savedInstanceState);
setListAdapter(new BaseExpandableListAdapterExample());
}
}
protected class BaseExpandableListAdapterExample extends BaseExpandableListAdapter {
}

然后继承后面两个

public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
View groupRow = getLayoutInflater().inflate(R.layout.group_row, null);
TextView textView = (TextView) groupRow.findViewById(R.id.text_group);
textView.setText(getGroup(groupPosition).toString());
return groupRow;
}

public View getChildView(int groupPosition, int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
View childRow = getLayoutInflater().inflate(R.layout.child_row, null);
TextView textView = (TextView) childRow.findViewById(R.id.text_child);
textView.setText(getChild(groupPosition, childPosition).toString());
return childRow;
}
group_row.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<TextView
android:id="@+id/text_element"
android:layout_width="fill_parent"
android:layout_height="48dip"
android:textSize="20sp"
android:textColor="#fff"
android:layout_marginLeft="48dip"
android:gravity="center_vertical" />
</RelativeLayout>