我先按照以下链接https://www.cnblogs.com/CCCrunner/p/11781589.html
做了一下,没有导入RoundImageView依赖,报错,然后我去掉了一部分child.xml中设置圆形图片的代码,没有报错,但是运行时,点击下拉菜单显示项目has stopped。不知原因出在哪里,请各位大佬指教。下面贴上代码。
Adapter做过细微修改,所有文件都没报错。
这是我自己的child.xml
<?xml version="1.0" encoding="utf-8"?>
android:id="@+id/list_friend"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="@+id/iv"
android:layout_width="match_parent"
android:layout_height="60dp"
android:orientation="vertical">
<TextView
android:id="@+id/friendname"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="好友1"
android:textColor="#000000"
android:textSize="30dp" />
<TextView
android:id="@+id/motto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="这是好友1的签名"
android:textColor="#000000"
android:textSize="20dp" />
</LinearLayout>
这是网上的child.xml
<?xml version="1.0" encoding="utf-8"?>
android:id="@+id/list_friend"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.makeramen.roundedimageview.RoundedImageView xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/iv"
android:layout_width="60dp"
android:layout_height="60dp"
android:gravity="center_horizontal"
android:src="#000000"
app:riv_border_color="#333333"
app:riv_border_width="3dip"
app:riv_corner_radius="10dip"
app:riv_mutate_background="true"
app:riv_oval="true" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="60dp"
android:layout_toRightOf="@id/iv"
android:orientation="vertical">
<TextView
android:id="@+id/friendname"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="好友1"
android:textColor="#000000"
android:textSize="30dp" />
<TextView
android:id="@+id/motto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="这是好友1的签名"
android:textColor="#000000"
android:textSize="20dp" />
</LinearLayout>
这是我的Adapter.class,与网上的一样,细微处做了修改,不报错
import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import com.example.test6.R;
import java.util.ArrayList;
public class MyBaseExpandableListAdapter extends BaseExpandableListAdapter {
private ArrayList<Group> gData; //分组
private ArrayList<ArrayList<Item>> iData; //长链表
private Context mContext;
public MyBaseExpandableListAdapter(ArrayList<Group> gData, ArrayList<ArrayList<Item>> iData, Context mContext) {
this.gData = gData;
this.iData = iData;
this.mContext = mContext;
}
@Override
public int getGroupCount() {
return gData.size();
}
@Override
public int getChildrenCount(int i) {
return iData.get(i).size();
}
@Override
public Object getGroup(int i) {
return gData.get(i);
}
@Override
public Object getChild(int i, int i1) {
return iData.get(i).get(i1);
}
@Override
public long getGroupId(int i) {
return i;
}
@Override
public long getChildId(int i, int i1) {
return i1;
}
@Override
public boolean hasStableIds() {
return false;
}
/**
* 取得用于显示给定分组的视图,这个方法仅返回分组的试图对象
* @param i
* @param b
* @param view
* @param viewGroup
* @return
*/
@Override
public View getGroupView(final int i, boolean b, View view, final ViewGroup viewGroup) {
final ViewHolderGroup groupHolder;
if (view == null){
view = LayoutInflater.from(mContext).inflate(R.layout.item_group,viewGroup,false);
groupHolder = new ViewHolderGroup();
groupHolder.mGroupImage = view.findViewById(R.id.triangle_right);
groupHolder.mGroupName = view.findViewById(R.id.headtext);
groupHolder.mGroupNum = view.findViewById(R.id.online_people_num);
view.setTag(groupHolder);
}else{
groupHolder = (ViewHolderGroup) view.getTag();
}
//groupHolder.mGroupImage.setImageResource(gData.get(i).getmGroupImage());
Log.d("gData",gData.get(i).getmGroupImage()+"");
Log.d("gData",gData.get(i).getmGroupName()+"");
groupHolder.mGroupName.setText(gData.get(i).getmGroupName());
groupHolder.mGroupNum.setText(gData.get(i).getmGroupNum());
return view;
}
@Override
public View getChildView(int i, int i1, boolean b, View view, ViewGroup viewGroup) {
ViewHolderItem itemHolder;
if (view == null){
view = LayoutInflater.from(mContext).inflate(R.layout.item_child,viewGroup,false);
itemHolder = new ViewHolderItem();
itemHolder.mPhoto = view.findViewById(R.id.iv);
itemHolder.mMotto = view.findViewById(R.id.motto);
itemHolder.mName = view.findViewById(R.id.friendname);
view.setTag(itemHolder);
}else{
itemHolder = (ViewHolderItem) view.getTag();
}
itemHolder.mPhoto.setImageResource(iData.get(i).get(i1).getmPhoto());
itemHolder.mName.setText(iData.get(i).get(i1).getmName());
itemHolder.mMotto.setText(iData.get(i).get(i1).getmMotto());
return view;
}
/**
* 设置子列表是否可以选中
* @param i
* @param i1
* @return
*/
@Override
public boolean isChildSelectable(int i, int i1) {
return true;
}
private static class ViewHolderGroup{
private ImageView mGroupImage;
private TextView mGroupName; //分组名
private TextView mGroupNum; //分组人数
private boolean isDown;
public ViewHolderGroup() {
isDown = false;
}
}
private static class ViewHolderItem{
private TextView mName;//人名
private TextView mMotto; //签名
private ImageView mPhoto; //头像
}
}