将两个textViews添加到可扩展listview的标题中 [英] adding two textViews to the header of the expandable listview
问题描述
我正在android studio中进行开发,并且试图使用Expandable List View.
I'm developing in android studio and I'm trying to use Expandable List View.
我想在每个部分的标题中添加另一个textView表示: 每个可扩展视图的标题上将有两个textViews. 它应该看起来像这样我该怎么做?
I want to add another textView to the header of every part means that: I'll have a two textViews on the header of each expendable view. it should look like this how do i do that?
我已经做了可扩展的列表视图,但是我剩下的唯一一件事就是在标题中添加另一个textview.
i already did the expandable list view but the only thing i have left is to add another textview to the header.
扩展Activity的主类如下所示:
the main class extends Activity is looking like this:
package com.example.yuliaaa.myapplication;
import android.app.Activity;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.widget.ExpandableListView;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
public class reasults extends Activity {
ExpandableListAdapter listAdapter;
ExpandableListView expListView;
List<String> listDataHeader;
HashMap<String, List<String>> listDataChild;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.reasults_layout);
// get the listview
expListView = (ExpandableListView) findViewById(R.id.expandable_supers);
// preparing list data
prepareListData();
listAdapter = new ExpandableListAdapter(this, listDataHeader, listDataChild);
// setting list adapter
expListView.setAdapter(listAdapter);
}
/*
* Preparing the list data
*/
private void prepareListData() {
listDataHeader = new ArrayList<String>();
listDataChild = new HashMap<String, List<String>>();
// Adding child data
listDataHeader.add("סופר X");
listDataHeader.add("סופר Y");
listDataHeader.add("סופר Z");
List<String> productsX = new ArrayList<String>();
productsX.add("במבה");
productsX.add("ביסלי");
List<String> productsY = new ArrayList<String>();
productsY.add("מים");
productsY.add("עגבניות");
productsY.add("קורנפלקס");
List<String> productsZ = new ArrayList<String>();
productsZ.add("קוקה קולה");
listDataChild.put(listDataHeader.get(0), productsX); // Header, Child data
listDataChild.put(listDataHeader.get(1), productsY);
listDataChild.put(listDataHeader.get(2), productsZ);
}
}
我有: 1)名为 content_resault.xml 的xml,其具有ID为 expandable_supers
i have: 1)xml named content_resault.xml that has the ExpandableListView tag with the id: expandable_supers
2)名为 list_group_super.xml 的XML,该XML具有TextView标签,其ID为: lblListHeader
2)xml named list_group_super.xml that has TextView tag with the id: lblListHeader
3)名为 list_items_products.xml 的xml,它具有一个ID为 lblListItem
3)xml named list_items_products.xml that has a TextView tag with the id: lblListItem
和一个名为:ExpandableListAdapter的java类,该类扩展了BaseExpandableListAdapter,看起来像这样:
and a java class named: ExpandableListAdapter that extends BaseExpandableListAdapter and looks like this:
package com.example.yuliaaa.myapplication;
import android.content.Context;
import android.graphics.Typeface;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.TextView;
import java.util.HashMap;
import java.util.List;
/**
* Created by Tzlil on 01/06/2016.
*/
public class ExpandableListAdapter extends BaseExpandableListAdapter {
private Context _context;
private List<String> _listDataHeader; // header titles
// child data in format of header title, child title
private HashMap<String, List<String>> _listDataChild;
public ExpandableListAdapter(Context context, List<String> listDataHeader,
HashMap<String, List<String>> listChildData) {
this._context = context;
this._listDataHeader = listDataHeader;
this._listDataChild = listChildData;
}
@Override
public Object getChild(int groupPosition, int childPosititon) {
return this._listDataChild.get(this._listDataHeader.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 infalInflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_items_products, null);
}
TextView txtListChild = (TextView) convertView
.findViewById(R.id.lblListItem);
txtListChild.setText(childText);
return convertView;
}
@Override
public int getChildrenCount(int groupPosition) {
return this._listDataChild.get(this._listDataHeader.get(groupPosition))
.size();
}
@Override
public Object getGroup(int groupPosition) {
return this._listDataHeader.get(groupPosition);
}
@Override
public int getGroupCount() {
return this._listDataHeader.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 infalInflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_group_super, null);
}
TextView lblListHeader = (TextView) convertView
.findViewById(R.id.lblListHeader);
lblListHeader.setTypeface(null, Typeface.BOLD);
lblListHeader.setText(headerTitle);
return convertView;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}
推荐答案
在您的xml list_group_super.xml中添加另一个textView,您需要在其中使用id = lbl2ListHeader.然后在getGroupView中添加此代码段.
Add in your xml list_group_super.xml another textView, where you need it with id = lbl2ListHeader. Then add this code snippet, in getGroupView.
TextView lbl2ListHeader = (TextView) convertView
.findViewById(R.id.lbl2ListHeader);
lbl2ListHeader.setTypeface(null, Typeface.BOLD);
lbl2ListHeader.setText("whatever you want");
package com.example.yuliaaa.myapplication;
import android.content.Context;
import android.graphics.Typeface;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.TextView;
import java.util.HashMap;
import java.util.List;
/**
* Created by Tzlil on 01/06/2016.
*/
public class ExpandableListAdapter extends BaseExpandableListAdapter {
private Context _context;
private List<String> _listDataHeader; // header titles
// child data in format of header title, child title
private HashMap<String, List<String>> _listDataChild;
public ExpandableListAdapter(Context context, List<String> listDataHeader,
HashMap<String, List<String>> listChildData) {
this._context = context;
this._listDataHeader = listDataHeader;
this._listDataChild = listChildData;
}
@Override
public Object getChild(int groupPosition, int childPosititon) {
return this._listDataChild.get(this._listDataHeader.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 infalInflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_items_products, null);
}
TextView txtListChild = (TextView) convertView
.findViewById(R.id.lblListItem);
txtListChild.setText(childText);
return convertView;
}
@Override
public int getChildrenCount(int groupPosition) {
return this._listDataChild.get(this._listDataHeader.get(groupPosition))
.size();
}
@Override
public Object getGroup(int groupPosition) {
return this._listDataHeader.get(groupPosition);
}
@Override
public int getGroupCount() {
return this._listDataHeader.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 infalInflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_group_super, null);
}
TextView lblListHeader = (TextView) convertView
.findViewById(R.id.lblListHeader);
lblListHeader.setTypeface(null, Typeface.BOLD);
lblListHeader.setText(headerTitle);
TextView lbl2ListHeader = (TextView) convertView
.findViewById(R.id.lbl2ListHeader);
lbl2ListHeader.setTypeface(null, Typeface.BOLD);
lbl2ListHeader.setText("whatever you want");
return convertView;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}
这篇关于将两个textViews添加到可扩展listview的标题中的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!