expandableListView 总结

实现效果图：

expandableListView  groupIndicator 图片默认是在左边，而且比较难看，而我要的是实现groupIndicator 在右边自定义图片，

1. 换图片

   
   

最简单的就是直接copy 系统

<style name="Widget.ExpandableListView" parent="Widget.ListView">

<item name="android:groupIndicator">@android:drawable/expander_group</item>

       <item name="android:indicatorLeft">?android:attr/expandableListPreferredItemIndicatorLeft</item>

       <item name="android:indicatorRight">?android:attr/expandableListPreferredItemIndicatorRight</item>

       <item name="android:childDivider">@android:drawable/divider_horizontal_dark_opaque</item>

   </style>

看到这个没有

<item name="android:groupIndicator">@android:drawable/expander_group</item>

我们只要把这个给换了，那 groupIndicator也就跟着变了。但是改这个有个问题显示出来的

显示的效果不是很好，图片有被拉升过，系统自己是做了个.9图片。我们已可以

2.做一张.9图片

   在你eclipse 的解压目录下，找到\sdk\tools\

我的是D:\android-IDE-eclipse-64\adt-bundle-windows-x86-20130522\sdk\tools

在这个目录下有一个draw9patch.bat的批处理文件。我们要用它做.9图，双击直接打开。直接将你要做成.9 的原图直接拉进工具。

3.创建 Indicator selector expander_group.xml 文件

<selector xmlns:android="http://schemas.android.com/apk/res/android">

   <item

       android:state_expanded="true"

       android:drawable="@drawable/up" />

   <item

       android:drawable="@drawable/down" />

</selector>

4.放一张图片到你的res目录下这里我直接用系统的

<item name="android:childDivider">@android:drawable/divider_horizontal_dark_opaque</item>

这个是一张图片

5.在自己的style。xml里写一个

 <style name="ExpandableListView" parent="android:Widget.ListView">

       <item name="android:groupIndicator">@drawable/expander_group</item>

       <item name="android:indicatorLeft">?android:attr/expandableListPreferredItemIndicatorLeft</item>

       <item name="android:indicatorRight">?android:attr/expandableListPreferredItemIndicatorRight</item>

       <item name="android:childDivider">@drawable/divider_horizontal_dark_opaque</item>

   </style>

这样我们就自己定义好了expandable的style

6.加载自己的style

   <ExpandableListView

       android:id="@+id/expandableListView1"

       android:layout_width="match_parent"

       android:layout_height="match_parent"

       android:layout_alignParentLeft="true"

       android:layout_alignParentTop="true" >

   </ExpandableListView>

7.在activity中设置 Indicator位置

expandablelistView 提供一个方法设置位置

Display dp = getWindowManager().getDefaultDisplay();

int width = dp.getWidth();

lv.setIndicatorBounds(width-50, width);

运行完结果：

不知道什么原因还是有点拉伸，效果不是很好，但又要实现title图片不回被拉伸放大这样的效果；所以我就只能把图标给屏蔽了，然后在groupItem的布局加一个ImageView，用ImageView自己实现。

   <ExpandableListView

       android:id="@+id/exlv_select_binddev"

       android:layout_width="match_parent"

       android:layout_height="match_parent"

 android:groupIndicator="@null"

       android:childIndicator="@null"

        >

   </ExpandableListView>

这样就把他自带的图标给屏蔽了，然后直接在groupitem布局加上一个ImageView，再做一个Childitem的布局，布局我直接设4个button，自由发挥了。

然后在适配器上getgroupView 设置父布局，在getChildView设置子布局。和listView的差不多。

现在要做的就是设置监听

监听ImageView expandableListView 的点击事件，这里我是点图片展开和关闭Child，长点击expandableListView 也展开和关闭Child，点击进入另一个界面。

监听ImageView的点击事件，这里关键是保存position。直接写一个内部类保存position

class ImageListener implements OnClickListener {

private int groupPosition;

public ImageListener(int groupPosition)

{

this.groupPosition = groupPosition;

}

@Override

public void onClick( View v )

{

Toast.makeText(ExpandableActivity.this, " p_w_picpath groupPosition : " + groupPosition, Toast.LENGTH_SHORT)

.show();

if (mlist.isGroupExpanded(groupPosition))//是否展开

{

mlist.collapseGroup(groupPosition);//设置关闭

}

else

{

mlist.expandGroup(groupPosition);//设置展开

}

}

}

监听长点击事件

mlist.setOnItemLongClickListener(new OnItemLongClickListener() {

public boolean onItemLongClick( AdapterView<?> parent, View childView, int flatPos, long id )

{

if (ExpandableListView.getPackedPositionType(id) == ExpandableListView.PACKED_POSITION_TYPE_GROUP)

{

long position = ((ExpandableListView) parent).getExpandableListPosition(flatPos);

int groupPosition = ExpandableListView.getPackedPositionGroup(position);

int childPosition = ExpandableListView.getPackedPositionChild(position);

System.out.println(groupPosition + childPosition + " :groupPosition childPosition" + flatPos + " "

+ id);

if (mlist.isGroupExpanded(groupPosition))

{

mlist.collapseGroup(groupPosition);

}

else

{

mlist.expandGroup(groupPosition);

}

return true;

}

else if (ExpandableListView.getPackedPositionType(id) == ExpandableListView.PACKED_POSITION_TYPE_CHILD)

{

long position = ((ExpandableListView) parent).getExpandableListPosition(flatPos);

int groupPosition = ExpandableListView.getPackedPositionGroup(position);

int childPosition = ExpandableListView.getPackedPositionChild(position);

System.out.println(childPosition + " :groupPosition");

return true;

}

return false;

}

});

获取点击事件

mlist.setOnGroupClickListener(new OnGroupClickListener() {

@Override

public boolean onGroupClick( ExpandableListView parent, View v, final int groupPosition, long id )

{

Toast.makeText(ExpandableActivity.this, " click groupPosition : " + groupPosition + " id : " + id,

Toast.LENGTH_SHORT).show();

return true;

}

});

这样就可以了

Child 的点击事件那就比较简单了，直接和ImageView的点击事件一样处理，或者直接写死了，Child是横向的，也只有4个不多。

ch.tv_choose.setOnClickListener(new OnClickListener() {

@Override

public void onClick( View v )

{

// TODO 子控件进入

onChildChick(0, FatherItem);

}

});

public void onChildChick( int childItemid, int fatherItemid )

{

// TODO 接收child

Toast.makeText(this, "  childItemid : " + childItemid + " fatherItemid : " + fatherItemid, Toast.LENGTH_SHORT)

.show();

}

这样就搞定了

代码：

package com.example.listviewanditemchick;
import java.util.List;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.database.DataSetObserver;
import android.graphics.drawable.Drawable;
import android.support.v4.widget.SearchViewCompat.OnCloseListenerCompat;
import android.view.Display;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.BaseExpandableListAdapter;
import android.widget.ExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.ListAdapter;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.ExpandableListView.OnGroupClickListener;
import android.widget.ExpandableListView.OnGroupExpandListener;
public class ExpandableActivity extends Activity {
    private ExpandableListView mlist;
    private MyExpandableadapter madapter;
    @Override
    protected void onCreate( Bundle savedInstanceState )
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_expandable);
        mlist = (ExpandableListView) findViewById(R.id.expandableListView1);
        madapter = new MyExpandableadapter(this);
        mlist.setAdapter(madapter);
        Display dp = getWindowManager().getDefaultDisplay();
        int width = dp.getWidth();
        mlist.setIndicatorBounds(width - 50, width);
        onClickExpandable();
    }
    private void onClickExpandable()
    {
        mlist.setOnGroupClickListener(new OnGroupClickListener() {
            @Override
            public boolean onGroupClick( ExpandableListView parent, View v, final int groupPosition, long id )
            {
                Toast.makeText(ExpandableActivity.this, " click groupPosition : " + groupPosition + " id : " + id,
                        Toast.LENGTH_SHORT).show();
                return true;
            }
        });
        //
        mlist.setOnItemLongClickListener(new OnItemLongClickListener() {
            public boolean onItemLongClick( AdapterView<?> parent, View childView, int flatPos, long id )
            {
                if (ExpandableListView.getPackedPositionType(id) == ExpandableListView.PACKED_POSITION_TYPE_GROUP)
                {
                    long position = ((ExpandableListView) parent).getExpandableListPosition(flatPos);
                    int groupPosition = ExpandableListView.getPackedPositionGroup(position);
                    int childPosition = ExpandableListView.getPackedPositionChild(position);
                    System.out.println(groupPosition + childPosition + " :groupPosition childPosition" + flatPos + " "
                            + id);
                    if (mlist.isGroupExpanded(groupPosition))
                    {
                        mlist.collapseGroup(groupPosition);
                    }
                    else
                    {
                        mlist.expandGroup(groupPosition);
                    }
                    return true;
                }
                else if (ExpandableListView.getPackedPositionType(id) == ExpandableListView.PACKED_POSITION_TYPE_CHILD)
                {
                    long position = ((ExpandableListView) parent).getExpandableListPosition(flatPos);
                    int groupPosition = ExpandableListView.getPackedPositionGroup(position);
                    int childPosition = ExpandableListView.getPackedPositionChild(position);
                    System.out.println(childPosition + " :groupPosition");
                    return true;
                }
                return false;
            }
        });
        // 子菜单打开一个其他的就关闭
        mlist.setOnGroupExpandListener(new OnGroupExpandListener() {
            @Override
            public void onGroupExpand( int groupPosition )
            {
                for (int i = 0; i < madapter.getGroupCount(); i++)
                {
                    if (groupPosition != i)
                    {
                        mlist.collapseGroup(i);
                    }
                }
            }
        });
    }
    public void onChildChick( int childItemid, int fatherItemid )
    {
        // TODO 接收child
        Toast.makeText(this, "  childItemid : " + childItemid + " fatherItemid : " + fatherItemid, Toast.LENGTH_SHORT)
                .show();
    }
    public void onImageChick( int groupPosition )
    {
        Toast.makeText(ExpandableActivity.this, " p_w_picpath groupPosition : " + groupPosition, Toast.LENGTH_SHORT).show();
        // if(isExpanded) p_w_picpath.setImageResource(R.drawable.up);
        // else p_w_picpath.setImageResource(R.drawable.down);
        if (mlist.isGroupExpanded(groupPosition))
        {
            mlist.collapseGroup(groupPosition);
        }
        else
        {
            mlist.expandGroup(groupPosition);
        }
    }
    class ImageListener implements OnClickListener {
        private int groupPosition;
        public ImageListener(int groupPosition)
        {
            this.groupPosition = groupPosition;
        }
        @Override
        public void onClick( View v )
        {
            Toast.makeText(ExpandableActivity.this, " p_w_picpath groupPosition : " + groupPosition, Toast.LENGTH_SHORT)
                    .show();
                                                                                                          
            if (mlist.isGroupExpanded(groupPosition))
            {
                mlist.collapseGroup(groupPosition);
            }
            else
            {
                mlist.expandGroup(groupPosition);
            }
        }
    }
    class MyExpandableadapter extends BaseExpandableListAdapter {
        private Context context;
        private int Imageposition;
        private boolean expanded;
        private int FatherItem;
        public MyExpandableadapter(Context c)
        {
            this.context = c;
        }
        @Override
        public int getGroupCount()
        {
            return 10;
        }
        @Override
        public int getChildrenCount( int groupPosition )
        {
            return 1;
        }
        @Override
        public Object getGroup( int groupPosition )
        {
            return null;
        }
        @Override
        public Object getChild( int groupPosition, int childPosition )
        {
            return null;
        }
        @Override
        public long getGroupId( int groupPosition )
        {
            return groupPosition;
        }
        @Override
        public long getChildId( int groupPosition, int childPosition )
        {
            return childPosition;
        }
        @Override
        public boolean hasStableIds()
        {
            return false;
        }
        public void setTitleImage( boolean isexpandeb )
        {
        }
        @Override
        public View getGroupView( int groupPosition, boolean isExpanded, View convertView, ViewGroup parent )
        {
            Imageposition = groupPosition;
            groupHowd gh;
            if (convertView == null)
            {
                gh = new groupHowd();
                // convertView =
                // LayoutInflater.from(context).inflate(R.layout.item, null);
                convertView = LayoutInflater.from(context).inflate(R.layout.item_p_w_picpathbutton, null);
                gh.p_w_picpath = (ImageView) convertView.findViewById(R.id.p_w_picpathButton1);
                convertView.setTag(gh);
            }
            else
            {
                gh = (groupHowd) convertView.getTag();
            }
            expanded = isExpanded;
            if (isExpanded)
                gh.p_w_picpath.setImageResource(R.drawable.up);
            else gh.p_w_picpath.setImageResource(R.drawable.down);
            gh.p_w_picpath.setOnClickListener(new ImageListener(Imageposition));
            return convertView;
        }
        @Override
        public View getChildView( int groupPosition, int childPosition, boolean isLastChild, View convertView,
                ViewGroup parent )
        {
            FatherItem = groupPosition;
            childHowd ch;
            if (convertView == null)
            {
                ch = new childHowd();
                convertView = LayoutInflater.from(context).inflate(R.layout.selecte_exlv_item, null);
                ch.tv_choose = (TextView) convertView.findViewById(R.id.tv_choose);
                ch.tv_select = (TextView) convertView.findViewById(R.id.tv_select);
                ch.tv_up = (TextView) convertView.findViewById(R.id.tv_up);
                ch.tv_delete = (TextView) convertView.findViewById(R.id.tv_delete);
                convertView.setTag(ch);
            }
            else
            {
                ch = (childHowd) convertView.getTag();
            }
            ch.tv_choose.setText("进入");
            ch.tv_select.setText("查看");
            ch.tv_up.setText("修改");
            ch.tv_delete.setText("删除");
            ch.tv_choose.setOnClickListener(new OnClickListener() {
                @Override
                public void onClick( View v )
                {
                    // TODO 子控件进入
                    onChildChick(0, FatherItem);
                }
            });
            ch.tv_select.setOnClickListener(new OnClickListener() {
                @Override
                public void onClick( View v )
                {
                    // TODO 子控键查看
                    onChildChick(1, FatherItem);
                }
            });
            ch.tv_up.setOnClickListener(new OnClickListener() {
                @Override
                public void onClick( View v )
                {
                    // TODO 子控件更新
                    onChildChick(2, FatherItem);
                }
            });
            ch.tv_delete.setOnClickListener(new OnClickListener() {
                @Override
                public void onClick( View v )
                {
                    // TODO 子控件你删除
                    onChildChick(3, FatherItem);
                }
            });
            return convertView;
        }
        @Override
        public boolean isChildSelectable( int groupPosition, int childPosition )
        {
            // TODO Auto-generated method stub
            return true;
        }
        class groupHowd {
            ImageView p_w_picpath;
            TextView tv_name;
            TextView tv_id;
            TextView tv_state;
        }
        class childHowd {
            TextView tv_choose;
            TextView tv_select;
            TextView tv_up;
            TextView tv_delete;
        }
    }
}

groupView 布局：这里最好用relativeLayout,之前用linearlayout不能实现点击p_w_picpathView没反应回去不到事件，后面监听触摸事件，那做法更麻烦，后来改用relativelayout后就可以了。

然后设置 RelativeLayout 设置 android:descendantFocusability="blocksDescendants"

要获取点击事件的 ImageView设置 android:focusable="false"就行了；

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/LinearLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:descendantFocusability="blocksDescendants"
    android:padding="8dp" >
    <ImageView
        android:id="@+id/p_w_picpathView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/ic_launcher" />
    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignTop="@+id/p_w_picpathView1"
        android:layout_marginLeft="14dp"
        android:layout_toRightOf="@+id/p_w_picpathView1"
        android:text="Large Text"
        android:textAppearance="?android:attr/textAppearanceLarge" />
    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/p_w_picpathView1"
        android:layout_alignLeft="@+id/textView1"
        android:text="TextView" />
    <ImageView
        android:id="@+id/p_w_picpathButton1"
        android:scaleType="fitXY"
        android:layout_width="45dp"
        android:layout_height="45dp"
        android:layout_alignBottom="@+id/textView2"
        android:layout_alignParentRight="true"
        android:src="@drawable/down"
        android:focusable="false" />
</RelativeLayout>

Child布局：

<?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="match_parent"
    android:descendantFocusability="beforeDescendants"
    android:orientation="horizontal" >
    <TextView
        android:id="@+id/tv_choose"
        android:layout_width="wrap_content"
        android:layout_height="@dimen/p_w_picpath_height"
        android:layout_weight="1"
        android:background="@drawable/btn_selector_blue"
        android:clickable="true"
        android:enabled="true"
        android:focusable="true"
        android:gravity="center"
        android:padding="4dp"
        android:text="进入"
        android:textColor="@color/white"
        android:textSize="@dimen/fontxiao" />
    <ImageView
        android:id="@+id/p_w_picpathView1"
        android:layout_width="2dp"
        android:layout_height="@dimen/p_w_picpath_height"
        android:background="@color/black" />
    <TextView
        android:id="@+id/tv_select"
        android:layout_width="wrap_content"
        android:layout_height="@dimen/p_w_picpath_height"
        android:layout_weight="1"
        android:background="@drawable/btn_selector_blue"
        android:clickable="true"
        android:enabled="true"
        android:focusable="true"
        android:gravity="center"
        android:padding="4dp"
        android:text="查看"
        android:textColor="@color/white"
        android:textSize="@dimen/fontxiao" />
    <ImageView
        android:id="@+id/p_w_picpathView1"
        android:layout_width="2dp"
        android:layout_height="@dimen/p_w_picpath_height"
        android:background="@color/black"/>
    <TextView
        android:id="@+id/tv_up"
        android:layout_width="wrap_content"
        android:layout_height="@dimen/p_w_picpath_height"
        android:layout_weight="0.96"
        android:background="@drawable/btn_selector_blue"
        android:clickable="true"
        android:enabled="true"
        android:focusable="true"
        android:gravity="center"
        android:padding="4dp"
        android:text="修改"
        android:textColor="@color/white"
        android:textSize="@dimen/fontxiao" />
    <ImageView
        android:id="@+id/p_w_picpathView1"
        android:layout_width="2dp"
        android:layout_height="@dimen/p_w_picpath_height"
        android:background="@color/black"/>
    <TextView
        android:id="@+id/tv_delete"
        android:layout_width="wrap_content"
        android:layout_height="@dimen/p_w_picpath_height"
        android:layout_weight="1"
        android:background="@drawable/btn_selector_blue"
        android:clickable="true"
        android:enabled="true"
        android:focusable="true"
        android:gravity="center"
        android:padding="4dp"
        android:text="删除"
        android:textColor="@color/white"
        android:textSize="@dimen/fontxiao" />
</LinearLayout>