我已经阅读了许多教程并使用一个 textview 作为 groupview 的子级来实现可扩展列表视图。现在我需要用 6-7 个 textview 和一个 imageview 作为每个组的孩子来实现可扩展列表视图。 谁能帮忙..
【问题讨论】：
标签： android expandablelistview expandablelistadapter
请遵循此代码
import java.util.ArrayList;
import android.app.Activity;
import android.app.ExpandableListActivity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.CheckedTextView;
import android.widget.ExpandableListView;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import com.example.parsedemoapp.ParseMainActivity;
import com.rstm.quizappsforiit.R;
public class ExpandableListMainActivity extends ExpandableListActivity {
// Create ArrayList to hold parent Items and Child Items
private ArrayList<String> parentItems = new ArrayList<String>();
private ArrayList<Object> childItems = new ArrayList<Object>();
private ArrayList<Integer> childimage = new ArrayList<Integer>();
ImageView imageView2;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Create Expandable List and set it's properties
ExpandableListView expandableList = getExpandableListView();
expandableList.setDividerHeight(2);
expandableList.setGroupIndicator(null);
expandableList.setClickable(true);
// Set the Items of Parent
setGroupParents();
// Set The Child Data
setChildData();
// Create the Adapter
MyExpandableAdapter adapter = new MyExpandableAdapter(parentItems,
childItems, childimage);
adapter.setInflater(
(LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE),
this);
// Set the Adapter to expandableList
expandableList.setAdapter(adapter);
expandableList.setOnChildClickListener(this);
}
// method to add parent Items
public void setGroupParents() {
parentItems.add("Chemistry");
parentItems.add("Mathematics");
parentItems.add("Physics");
}
// method to set child data of each parent
public void setChildData() {
// Add Child Items for Fruits
ArrayList<String> child = new ArrayList<String>();
child.add("Some Basic Concepts");
child.add("States of Matter");
child.add("Atomic Structure");
child.add("Solutions");
child.add("Chemical Energetics and Thermodynamics");
child.add("Chemical and Ionic Equilibria");
child.add("Redox Reactions and Electrochemistry");
childItems.add(child);
childimage.add(R.drawable.buy1);
childItems.add(childimage);
// Add Child Items for Animals
child = new ArrayList<String>();
child.add("Physics and Measurement");
child.add("Kinematics");
child.add("Laws of Motion");
child.add("Work, Energy and Power");
child.add("Rotational Motion");
child.add("Gravitation");
child.add("Solids and Fluids");
childItems.add(child);
childItems.add(childimage);
}
public class MyExpandableAdapter extends BaseExpandableListAdapter {
private Activity activity;
private ArrayList<Object> childtems;
private ArrayList<Integer> childimage;
private LayoutInflater inflater;
private ArrayList<String> parentItems, child;
public MyExpandableAdapter(ArrayList<String> parents,
ArrayList<Object> childern, ArrayList<Integer> childimage) {
this.parentItems = parents;
this.childtems = childern;
this.childimage = childimage;
}
public void setInflater(LayoutInflater inflater, Activity activity) {
this.inflater = inflater;
this.activity = activity;
}
@SuppressWarnings("unchecked")
@Override
public View getChildView(int groupPosition, final int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
child = (ArrayList<String>) childtems.get(groupPosition);
TextView textView = null;
if (convertView == null) {
convertView = inflater.inflate(R.layout.child_view, null);
}
textView = (TextView) convertView.findViewById(R.id.textViewChild);
String a = child.get(childPosition);
textView.setText(child.get(childPosition));
imageView2 = (ImageView) convertView.findViewById(R.id.imageView2);
imageView2.setBackgroundResource(childimage.get(childPosition));
convertView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
}
});
return convertView;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = inflater.inflate(R.layout.parent_view, null);
}
((CheckedTextView) convertView).setText(parentItems
.get(groupPosition));
((CheckedTextView) convertView).setChecked(isExpanded);
return convertView;
}
@Override
public Object getChild(int groupPosition, int childPosition) {
return null;
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return 0;
}
@SuppressWarnings("unchecked")
@Override
public int getChildrenCount(int groupPosition) {
return ((ArrayList<String>) childtems.get(groupPosition)).size();
}
@Override
public Object getGroup(int groupPosition) {
return null;
}
@Override
public int getGroupCount() {
return parentItems.size();
}
@Override
public void onGroupCollapsed(int groupPosition) {
super.onGroupCollapsed(groupPosition);
}
@Override
public void onGroupExpanded(int groupPosition) {
super.onGroupExpanded(groupPosition);
}
@Override
public long getGroupId(int groupPosition) {
return 0;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return false;
}
}
}
【讨论】：
源代码
https://drive.google.com/open?id=0BzBKpZ4nzNzUVkExUDlqRFhtcGc
package com.keshav.expandablelistviewindrawerkeshav;
import android.os.Bundle;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.View;
import android.widget.ExpandableListView;
import android.widget.ImageView;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
public class DrawerActivityExpandable extends AppCompatActivity
{
Toolbar toolbar;
private DrawerLayout drawer;
private ExpandableListView drawerList;
private ActionBarDrawerToggle actionBarDrawerToggle;
List<String> listDataHeader;
HashMap<String, List<String>> listDataChild;
ImageView profile_image;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_drawer_expandable);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
toolbar.setTitle("ABC");
// getSupportActionBar().setDisplayShowHomeEnabled(true);
initDrawer();
// Listview Group click listener
drawerList.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {
@Override
public boolean onGroupClick(ExpandableListView parent, View v,
int groupPosition, long id) {
Toast.makeText(getApplicationContext(),
"Group Clicked " + listDataHeader.get(groupPosition),
Toast.LENGTH_SHORT).show();
return false;
}
});
// Listview Group expanded listener
drawerList.setOnGroupExpandListener(new ExpandableListView.OnGroupExpandListener() {
// TODO Colapse Here Using this... in android
int previousGroup = -1;
boolean flag = false;
@Override
public void onGroupExpand(int groupPosition) {
Log.e("keshav", "onGroupClick is -> " + groupPosition);
Toast.makeText(getApplicationContext(),
listDataHeader.get(groupPosition) + " Expanded",
Toast.LENGTH_SHORT).show();
if (groupPosition != previousGroup && flag) {
drawerList.collapseGroup(previousGroup);
}
previousGroup = groupPosition;
flag = true;
if(groupPosition==0 ||groupPosition==1||groupPosition==4){
drawer.closeDrawer(drawerList);
toolbar.setTitle(""+listDataHeader.get(groupPosition));
}
}
});
// Listview Group collasped listener
drawerList.setOnGroupCollapseListener(new ExpandableListView.OnGroupCollapseListener() {
@Override
public void onGroupCollapse(int groupPosition) {
Toast.makeText(getApplicationContext(),
listDataHeader.get(groupPosition) + " Collapsed",
Toast.LENGTH_SHORT).show();
}
});
// Todo Listview on child click listener
drawerList.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {
@Override
public boolean onChildClick(ExpandableListView parent, View v,
int groupPosition, int childPosition, long id) {
// TODO Auto-generated method stub
Toast.makeText(
getApplicationContext(),
listDataHeader.get(groupPosition)
+ " : keshav : "
+ listDataChild.get(
listDataHeader.get(groupPosition)).get(
childPosition), Toast.LENGTH_SHORT)
.show();
Log.e("keshav","Child Data 1->"+listDataHeader.get(groupPosition));
Log.e("keshav","Child Data 2->"+listDataChild.get(listDataHeader.get(groupPosition)).get(childPosition));
toolbar.setTitle(""+listDataChild.get(listDataHeader.get(groupPosition)).get(childPosition));
// if(groupPosition==2 ||groupPosition==3)
drawer.closeDrawer(drawerList);
return false;
}
});
profile_image.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
Log.e("Keshav", "Clck Profile Image");
/*if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
int permissionCheck = ContextCompat.checkSelfPermission(DrawerActivity.this,
Manifest.permission.CAMERA);
if (permissionCheck == PackageManager.PERMISSION_GRANTED) {
//showing dialog to select image
selectImage();
Log.e("permission", "granted");
} else {
ActivityCompat.requestPermissions(DrawerActivity.this,
new String[]{Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.WRITE_EXTERNAL_STORAGE,
Manifest.permission.CAMERA}, 1);
}
} else {
selectImage();
}*/
}
});
}
private void initDrawer() {
drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawerList = (ExpandableListView) findViewById(R.id.left_drawer);
View header = getLayoutInflater().inflate(R.layout.nav_header_main, null);
drawerList.addHeaderView(header);
drawer.setDrawerShadow(R.mipmap.drawer_shadow, GravityCompat.START);
profile_image = (ImageView) header.findViewById(R.id.user_profile_image);
profile_image.setBackgroundResource(R.mipmap.keshav);
// getSupportActionBar().setDisplayHomeAsUpEnabled(true);
// getSupportActionBar().setHomeButtonEnabled(true);
// preparing list data
prepareListData();
drawerList.setAdapter(new NavigationDrawerExpandableAdapter(this, listDataHeader, listDataChild));
// drawerList.setOnChildClickListener(this);
actionBarDrawerToggle = new ActionBarDrawerToggle(this, drawer, toolbar, R.string.drawer_open, R.string.drawer_close) {
@Override
public void onDrawerClosed(View drawerView) {
// Code here will be triggered once the drawer closes as we don't want anything to happen so we leave this blank
super.onDrawerClosed(drawerView);
}
@Override
public void onDrawerOpened(View drawerView) {
// Code here will be triggered once the drawer open as we don't want anything to happen so we leave this blank
super.onDrawerOpened(drawerView);
}
};
//Setting the actionbarToggle to drawer layout
drawer.setDrawerListener(actionBarDrawerToggle);
//calling sync state is necessay or else your hamburger icon wont show up
actionBarDrawerToggle.syncState();
}
/*
* Preparing the list data
*/
private void prepareListData() {
listDataHeader = new ArrayList<String>();
listDataChild = new HashMap<String, List<String>>();
// Adding child data
listDataHeader.add("Dashboard");
listDataHeader.add("Enter Manually");
listDataHeader.add("Profile");
listDataHeader.add("Reports");
listDataHeader.add("Logout");
// TODO Adding child data
List<String> nowShowing = new ArrayList<String>();
nowShowing.add("My Profile");
nowShowing.add("Change Password");
List<String> blank = new ArrayList<String>();
List<String> report = new ArrayList<String>();
report.add("Batch Wise Report");
report.add("Location Wise Report");
report.add("Date Wise Report");
listDataChild.put(listDataHeader.get(0), blank);
listDataChild.put(listDataHeader.get(1), blank); // Header, Child data
listDataChild.put(listDataHeader.get(2), nowShowing);
listDataChild.put(listDataHeader.get(3), report);
listDataChild.put(listDataHeader.get(4), blank);
}
}
-------------------------------
Adapter
------------------------------
package com.keshav.expandablelistviewindrawerkeshav;
import android.app.Activity;
import android.content.Context;
import android.graphics.Typeface;
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 java.util.HashMap;
import java.util.List;
/**
* Created by root on 11/12/15.
*/
public class NavigationDrawerExpandableAdapter extends BaseExpandableListAdapter {
public LayoutInflater minflater;
public Activity activity;
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 NavigationDrawerExpandableAdapter(Context context, List<String> listDataHeader,
HashMap<String, List<String>> listChildData) {
this._context = context;
this._listDataHeader = listDataHeader;
this._listDataChild = listChildData;
}
public void setInflater(LayoutInflater mInflater, Activity act) {
this.minflater = mInflater;
activity = act;
}
@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_item, null);
}
TextView txtListChild = (TextView) convertView
.findViewById(R.id.lblListItem);
txtListChild.setText(childText);
//TODO set Hard Code Child item
ImageView iv_ListChild = (ImageView) convertView
.findViewById(R.id.iv_ListChild);
txtListChild.setText(childText);
Log.e("Keshav", "childText 1 -> " + childText);
if (childText.equals("My Profile")){
iv_ListChild.setBackgroundResource(R.mipmap.youtuben);
}else if (childText.equals("Change Password")){
iv_ListChild.setBackgroundResource(R.mipmap.facebook);
}else if (childText.equals("Batch Wise Report")){
iv_ListChild.setBackgroundResource(R.mipmap.googleplus);
}else if (childText.equals("Location Wise Report")){
iv_ListChild.setBackgroundResource(R.mipmap.linkedin);
}else if (childText.equals("Date Wise Report")){
iv_ListChild.setBackgroundResource(R.mipmap.twitter);
}else {
iv_ListChild.setBackgroundResource(R.mipmap.ic_launcher_round);
}
//TODO set Hard Code Child item
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 void onGroupCollapsed(int groupPosition) {
super.onGroupCollapsed(groupPosition);
}
@Override
public void onGroupExpanded(int groupPosition) {
super.onGroupExpanded(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, null);
}
TextView lblListHeader = (TextView) convertView
.findViewById(R.id.lblListHeader);
lblListHeader.setTypeface(null, Typeface.NORMAL); // TODO Set Text Color BOLD Here
lblListHeader.setText(headerTitle);
Log.e("keshav","groupPosition "+groupPosition);
ImageView iv_ListHeader = (ImageView) convertView
.findViewById(R.id.iv_ListHeader);
if(groupPosition==0)
iv_ListHeader.setBackgroundResource(R.mipmap.changepassword_48);
else if(groupPosition==1)
iv_ListHeader.setBackgroundResource(R.mipmap.barcode_48);
else if(groupPosition==2)
iv_ListHeader.setBackgroundResource(R.mipmap.changepassword_48);
else if(groupPosition==3)
iv_ListHeader.setBackgroundResource(R.mipmap.enter_manualy_48);
else
iv_ListHeader.setBackgroundResource(R.mipmap.ic_launcher);
return convertView;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}
------------------------------------
activity_drawer.xml
-------------------------------------
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:id="@+id/container_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<include
android:id="@+id/toolbar"
layout="@layout/toolbar" />
</LinearLayout>
<FrameLayout
android:id="@+id/fllContent"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1" />
</LinearLayout>
<ExpandableListView
android:id="@+id/left_drawer"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:groupIndicator="@null"
android:dividerHeight="1dp"
android:divider="@color/list_divider"
android:listSelector="@drawable/list_selector"
android:background="@color/list_background" />
<!--android:groupIndicator="@null"-->
</android.support.v4.widget.DrawerLayout>
------------------------------------
listgroup.xml
------------------------------------
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="40dp"
android:orientation="horizontal"
android:background="@drawable/list_selector">
<ImageView
android:id="@+id/iv_ListHeader"
android:layout_width="25dp"
android:layout_height="25dp"
android:layout_marginTop="10dp"
android:layout_marginLeft="10dp"
android:layout_marginBottom="10dp"
android:background="@mipmap/ic_launcher" />
<TextView
android:id="@+id/lblListHeader"
style="@style/TextViewSmallBlack"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_marginTop="5dp"
android:layout_marginLeft="10dp"
android:layout_marginBottom="10dp"
android:gravity="left"
android:paddingBottom="5dp"
android:paddingTop="5dp"
android:text="list group"
android:textSize="14sp"
/>
</LinearLayout>
------------------------------------
listitem.xml
------------------------------------
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="40dp"
android:orientation="horizontal"
android:background="@drawable/list_selector">
<ImageView
android:id="@+id/iv_ListChild"
android:layout_width="25dp"
android:layout_height="25dp"
android:layout_marginTop="10dp"
android:layout_marginLeft="40dp"
android:layout_marginBottom="10dp"
android:background="@mipmap/ic_launcher" />
<TextView
android:id="@+id/lblListItem"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="14dip"
style="@style/TextViewSmallBlack"
android:layout_marginTop="5dp"
android:layout_marginLeft="10dp"
android:gravity="left"
android:paddingBottom="5dp"
android:paddingTop="5dp"
android:text="list group"
/>
</LinearLayout>
------------------------------------
navheader.xml
------------------------------------
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="190dp"
android:gravity="start"
android:background="@color/colorPrimary"
android:orientation="vertical"><!--android:background="@color/com_facebook_button_background_color_disabled"-->
<de.hdodenhof.circleimageview.CircleImageView
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/user_profile_image"
android:layout_width="90dp"
android:layout_height="90dp"
android:layout_marginLeft="20dp"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:layout_marginTop="40dp"
app:border_color="@color/click_tick" />
<TextView
android:id="@+id/userName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/user_profile_image"
android:layout_centerHorizontal="true"
android:layout_marginLeft="20dp"
android:layout_marginTop="10dp"
android:gravity="left"
android:text="Keshav Gera"
android:textColor="@color/white"
android:textSize="16sp"
android:textStyle="bold" /> <!--android:textSize="14sp"-->
<TextView
android:id="@+id/usertype"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:gravity="left"
android:layout_marginLeft="20dp"
android:layout_marginTop="10dp"
android:layout_marginBottom="5dp"
android:textSize="10sp"
android:textColor="#fff"
android:layout_alignParentBottom="true"
android:layout_alignLeft="@+id/userName"
android:layout_alignStart="@+id/userName" /> <!--android:textSize="14sp"-->
</LinearLayout>
<!--
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="@dimen/nav_header_height"
android:background="@drawable/side_nav_bar"
android:gravity="bottom"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:theme="@style/ThemeOverlay.AppCompat.Dark">
<ImageView
android:id="@+id/imageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingTop="@dimen/nav_header_vertical_spacing"
android:src="@android:drawable/sym_def_app_icon" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="@dimen/nav_header_vertical_spacing"
android:text="Android Studio"
android:textAppearance="@style/TextAppearance.AppCompat.Body1" />
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="android.studio@android.com" />
</LinearLayout>
-->
------------------------------------
toolbar.xml
------------------------------------
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:local="http://schemas.android.com/apk/res-auto"
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:minHeight="?attr/actionBarSize"
android:background="?attr/colorPrimary"
local:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
local:popupTheme="@style/ThemeOverlay.AppCompat.Light" />
【讨论】：