【移動應(yīng)用開發(fā)技術(shù)】android的ExpandableListView

【移動應(yīng)用開發(fā)技術(shù)】android的ExpandableListView

activity_main.xml<RelativeLayout

xmlns:android="/apk/res/android"

xmlns:tools="/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:paddingBottom="@dimen/activity_vertical_margin"

android:paddingLeft="@dimen/activity_horizontal_margin"

android:paddingRight="@dimen/activity_horizontal_margin"

android:paddingTop="@dimen/activity_vertical_margin"

tools:context="com.example.expandablelistview.MainActivity"

>

<ExpandableListView

android:id="@+id/ExpandableListView1_1"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_alignParentLeft="true"

android:layout_alignParentTop="true"

android:groupIndicator="@null"

>

</ExpandableListView>

</RelativeLayout>

<!--

android:groupIndicator="@null"去掉自帶的箭頭圖標

-->group_item.xml<?xml

version="1.0"

encoding="utf-8"?>

<LinearLayout

xmlns:android="/apk/res/android"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:orientation="horizontal"

>

<ImageView

android:id="@+id/p_w_picpathViewgroup_1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:src="@drawable/ic_launcher"

/>

<TextView

android:id="@+id/textViewgroup_1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

/>

</LinearLayout>child_item.xml<?xml

version="1.0"

encoding="utf-8"?>

<LinearLayout

xmlns:android="/apk/res/android"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:orientation="horizontal"

>

<ImageView

android:id="@+id/p_w_picpathViewchild_1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:src="@drawable/ic_launcher"

android:padding="10dp"

/>

<TextView

android:id="@+id/textViewchild_1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="sdfds"

android:padding="10dp"

/>

</LinearLayout>MainActivitypackage

com.example.expandablelistview;

import

android.app.Activity;

import

android.os.Bundle;

import

android.view.Menu;

import

android.view.MenuItem;

import

android.view.View;

import

android.view.ViewGroup;

import

android.widget.BaseExpandableListAdapter;

import

android.widget.ExpandableListView;

import

android.widget.ImageView;

import

android.widget.TextView;

public

class

MainActivity

extends

Activity

{

private

ExpandableListView

expandableListView;

@Override

protected

void

onCreate(Bundle

savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

expandableListView=(ExpandableListView)

findViewById(R.id.ExpandableListView1_1);

expandableListView.setAdapter(new

MyExpandableListAdapter());

}

@Override

public

boolean

onCreateOptionsMenu(Menu

menu)

{

//

Inflate

the

menu;

this

adds

items

to

the

action

bar

if

it

is

present.

getMenuInflater().inflate(R.menu.main,

menu);

return

true;

}

@Override

public

boolean

onOptionsItemSelected(MenuItem

item)

{

//

Handle

action

bar

item

clicks

here.

The

action

bar

will

//

automatically

handle

clicks

on

the

Home/Up

button,

so

long

//

as

you

specify

a

parent

activity

in

AndroidManifest.xml.

int

id

=

item.getItemId();

if

(id

==

R.id.action_settings)

{

return

true;

}

return

super.onOptionsItemSelected(item);

}

class

MyExpandableListAdapter

extends

BaseExpandableListAdapter{

private

String[]

skills

=

new

String[]{

"WORD",

"EXCEL",

"EMAIL",

"PPT"

};

private

String[][]

groups

=

new

String[][]{

{"文檔編輯",

"文檔排版",

"文檔處理",

"文檔打印"},

{"表格編輯",

"表格排版",

"表格處理",

"表格打印"},

{"收發(fā)郵件",

"管理郵箱",

"登錄登出",

"注冊綁定"},

{"演示編輯",

"演示排版",

"演示處理",

"演示打印"},

};

@Override

public

int

getGroupCount()

{

//

TODO

Auto-generated

method

stub

return

skills.length;

}

//二級列表的數(shù)量

@Override

public

int

getChildrenCount(int

groupPosition)

{

//

TODO

Auto-generated

method

stub

return

groups[groupPosition].length;

}

//返回每一組的對象

@Override

public

Object

getGroup(int

groupPosition)

{

//

TODO

Auto-generated

method

stub

return

skills[groupPosition];

}

//返回每組中的列表項

@Override

public

Object

getChild(int

groupPosition,

int

childPosition)

{

//

TODO

Auto-generated

method

stub

return

groups[groupPosition][childPosition];

}

@Override

public

long

getGroupId(int

groupPosition)

{

//

TODO

Auto-generated

method

stub

return

groupPosition;

}

@Override

public

long

getChildId(int

groupPosition,

int

childPosition)

{

//

TODO

Auto-generated

method

stub

return

childPosition;

}

@Override

public

boolean

hasStableIds()

{

//

TODO

Auto-generated

method

stub

return

true;

}

@Override

public

View

getGroupView(int

groupPosition,

boolean

isExpanded,

View

convertView,

ViewGroup

parent)

{

//

TODO

Auto-generated

method

stub

if(convertView==null){

convertView=getLayoutInflater().inflate(R.layout.group_item,

null);

}

ImageView

p_w_picpathView=(ImageView)

convertView.findViewById(R.id.p_w_picpathViewgroup_1);

TextView

textView=(TextView)

convertView.findViewById(R.id.textViewgroup_1);

p_w_picpathView.setImageResource(R.drawable.ic_launcher);

textView.setText(skills[groupPosition]);

return

convertView;

}

@Override

public

View

getChildView(int

groupPosition,

int

childPosition,

boolean

isLastChild,

View

convertView,

ViewGroup

pa