【发布时间】：2015-10-19 13:56:48
【问题描述】：
我一直在为我的应用程序开发一个导航抽屉，我决定使用 ExpandableListView 构建它。
我的问题是如何将标题（例如用户图像配置文件和用户全名）添加到导航抽屉的顶部？
我正在使用自定义 ExpandableListAdapter。
如果需要任何代码，请询问。我马上贴出来。
编辑
这是我实现的导航抽屉：
ExpandableListAdapter.java
package co.eshg.drawertest;
import java.util.HashMap;
import java.util.List;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class ExpandableListAdapter extends BaseExpandableListAdapter {
private Context context;
private List<String> listDataItem; // header titles
// child data in format of header title, child title
private HashMap<String, List<String>> listDataChild;
public ExpandableListAdapter(Context context, List<String> listDataItem,
HashMap<String, List<String>> listChildData) {
this.context = context;
this.listDataItem = listDataItem;
this.listDataChild = listChildData;
}
@Override
public Object getChild(int groupPosition, int childPosititon) {
return this.listDataChild.get(this.listDataItem.get(groupPosition)).get(childPosititon);
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
@Override
public View getChildView(int groupPosition, final int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
final String childText = (String) getChild(groupPosition, childPosition);
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) this.context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.drawer_child_item, null);
}
TextView txtListChild = (TextView) convertView
.findViewById(R.id.tvChildItem);
txtListChild.setText(childText);
return convertView;
}
@Override
public int getChildrenCount(int groupPosition) {
List childList = listDataChild.get(listDataItem.get(groupPosition));
if (childList != null && ! childList.isEmpty()) {
return childList.size();
}
return 0;
}
@Override
public Object getGroup(int groupPosition) {
return this.listDataItem.get(groupPosition);
}
@Override
public int getGroupCount() {
return this.listDataItem.size();
}
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
String headerTitle = (String) getGroup(groupPosition);
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) this.context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.drawer_list_item, null);
}
ImageView indicator = (ImageView)convertView.findViewById(R.id.imgIndicator);
if ( getChildrenCount( groupPosition ) == 0 ) {
indicator.setVisibility( View.INVISIBLE );
} else {
indicator.setVisibility( View.VISIBLE );
indicator.setImageResource( isExpanded ? R.drawable.ic_keyboard_arrow_down_white_24dp
: R.drawable.ic_keyboard_arrow_up_white_24dp );
}
TextView lblListHeader = (TextView) convertView
.findViewById(R.id.tvListItem);
lblListHeader.setText(headerTitle);
return convertView;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}
activity_drawer_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:id="@+id/activity_frame"
android:layout_height="match_parent"
android:layout_width="match_parent"/>
<ExpandableListView
android:id="@+id/left_drawer"
android:layout_height="match_parent"
android:layout_width="240dp"
android:layout_gravity="start"
android:choiceMode="singleChoice"
android:groupIndicator="@android:color/transparent"
android:divider="@android:color/transparent"
android:background="#444444" />
</android.support.v4.widget.DrawerLayout>
drawer_header.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="100dp"
android:orientation="vertical"
android:weightSum="1">
<TextView
android:id="@+id/name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:textColor="#ffffff"
android:text="Example Example"
android:textSize="14sp"
android:textStyle="bold"
android:layout_centerVertical="true"
android:layout_alignStart="@+id/email" />
<TextView
android:id="@+id/email"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffffff"
android:layout_marginLeft="16dp"
android:text="example@gmail.com"
android:textSize="14sp"
android:textStyle="normal"
android:layout_alignBottom="@+id/circleView"
android:layout_toEndOf="@+id/circleView" />
<de.hdodenhof.circleimageview.CircleImageView
android:layout_width="60dip"
android:layout_height="60dip"
android:src="@drawable/ic_face_white_48dp"
android:layout_marginLeft="20dp"
android:layout_marginTop="20dp"
android:id="@+id/circleView"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true" />
</RelativeLayout>
【问题讨论】：
标签： java android expandablelistview expandablelistadapter