Android(安卓)多级菜单

效果:

main.xml:

Java代码

<?xmlversion= "1.0" encoding= "utf-8" ?>
<RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal" android:layout_width= "fill_parent"
android:layout_height="wrap_content" >
<ImageViewandroid:id="@+id/icon" android:layout_width= "wrap_content"
android:layout_height="fill_parent" android:layout_marginRight= "6.0dip"
android:layout_alignParentTop="true" android:layout_alignParentBottom= "true" />
<!--<TextViewandroid:id="@+id/text" android:layout_gravity= "center_vertical"
android:layout_weight="1.0" android:layout_height= "wrap_content" android:layout_width= "0dip"
android:textAppearance="?android:attr/textAppearanceMedium" android:singleLine= "true"
android:textColor="#ffffff" />-->
<TextViewandroid:textAppearance="?android:textAppearanceMedium"
android:gravity="center_vertical" android:id= "@+id/text"
android:textColor="#ffffff" android:layout_width= "fill_parent"
android:layout_height="fill_parent" android:singleLine= "true"
android:layout_toRightOf="@id/icon" android:layout_alignParentTop= "true"
android:layout_alignParentBottom="true" />
</RelativeLayout>

TreeElement.java:

Java代码

package com.iaiai;
import java.util.ArrayList;
/**
*
*
*Title:TreeElement.java
*
*
*E-Mail:176291935@qq.com
*
*
*QQ:176291935
*
*
*Http:iaiai.iteye.com
*
*
*Createtime:2011-8-20
*
*
*@author丸子
*@version0.0.1
*/
public class TreeElement{
private Stringid;
private StringoutlineTitle;
private boolean mhasParent;
private boolean mhasChild;
private TreeElementparent;
private int level;
private ArrayList<TreeElement>childList= new ArrayList<TreeElement>();
public StringgetId(){
return id;
}
public void setId(Stringid){
this .id=id;
}
public StringgetOutlineTitle(){
return outlineTitle;
}
public void setOutlineTitle(StringoutlineTitle){
this .outlineTitle=outlineTitle;
}
public boolean isMhasParent(){
return mhasParent;
}
public void setMhasParent( boolean mhasParent){
this .mhasParent=mhasParent;
}
public boolean isMhasChild(){
return mhasChild;
}
public void setMhasChild( boolean mhasChild){
this .mhasChild=mhasChild;
}
public int getLevel(){
return level;
}
public void setLevel( int level){
this .level=level;
}
public boolean isExpanded(){
return expanded;
}
public void setExpanded( boolean expanded){
this .expanded=expanded;
}
public ArrayList<TreeElement>getChildList(){
return childList;
}
public TreeElementgetParent(){
return parent;
}
public void setParent(TreeElementparent){
this .parent=parent;
}
//privateOutlineElementoutlineElement;
private boolean expanded;
public void addChild(TreeElementc){
this .childList.add(c);
this .mhasParent= false ;
this .mhasChild= true ;
c.parent=this ;
c.level=this .level+ 1 ;
}
public TreeElement(Stringid,Stringtitle){
super ();
this .id=id;
this .outlineTitle=title;
this .level= 0 ;
this .mhasParent= true ;
this .mhasChild= false ;
this .parent= null ;
}
public TreeElement(Stringid,StringoutlineTitle, boolean mhasParent,
boolean mhasChild,TreeElementparent, int level, boolean expanded){
super ();
this .id=id;
this .outlineTitle=outlineTitle;
this .mhasParent=mhasParent;
this .mhasChild=mhasChild;
this .parent=parent;
if (parent!= null ){
this .parent.getChildList().add( this );
}
this .level=level;
this .expanded=expanded;
}
}

TreeView.java:

Java代码

package com.iaiai;
import java.util.ArrayList;
import java.util.List;
import android.app.ListActivity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
/**
*
*
*Title:TreeView.java
*
*
*E-Mail:176291935@qq.com
*
*
*QQ:176291935
*
*
*Http:iaiai.iteye.com
*
*
*Createtime:2011-8-20
*
*
*@author丸子
*@version0.0.1
*/
public class TreeView extends ListActivity{
private ArrayList<TreeElement>mPdfOutlinesCount= new ArrayList<TreeElement>();
private TreeViewAdaptertreeViewAdapter= null ;
/**Calledwhentheactivityisfirstcreated.*/
@Override
public void onCreate(BundlesavedInstanceState){
super .onCreate(savedInstanceState);
initialData();
treeViewAdapter=new TreeViewAdapter( this ,R.layout.main,
mPdfOutlinesCount);
setListAdapter(treeViewAdapter);
registerForContextMenu(getListView());
}
private void initialData(){
TreeElementelement1=new TreeElement( "01" , "关键类" );
TreeElementelement2=new TreeElement( "02" , "应用程序组件" );
TreeElementelement3=new TreeElement( "03" , "Activity和任务" );
TreeElementelement4=new TreeElement( "04" , "激活组件：intent" );
TreeElementelement5=new TreeElement( "05" , "关闭组件" );
TreeElementelement6=new TreeElement( "06" , "manifest文件" );
TreeElementelement7=new TreeElement( "07" , "Intent过滤器" );
TreeElementelement8=new TreeElement( "08" , "Affinity（吸引力）和新任务" );
TreeElementelement9=new TreeElement( "09" , "加载模式" );
TreeElementelement10=new TreeElement( "10" , "加载模式孩子1" );
TreeElementelement11=new TreeElement( "11" , "加载模式孩子2" );
TreeElementelement12=new TreeElement( "12" , "加载模式孩子2的孩子1" );
TreeElementelement13=new TreeElement( "13" , "加载模式孩子2的孩子2" );
TreeElementelement14=new TreeElement( "14" , "加载模式孩子1的孩子1" );
TreeElementelement15=new TreeElement( "15" , "加载模式孩子1的孩子2" );
TreeElementelement16=new TreeElement( "16" , "加载模式孩子1的孩子3" );
TreeElementelement17=new TreeElement( "17" , "加载模式孩子1的孩子4" );
TreeElementelement18=new TreeElement( "18" , "加载模式孩子1的孩子5" );
TreeElementelement19=new TreeElement( "19" , "加载模式孩子1的孩子6" );
mPdfOutlinesCount.add(element1);
mPdfOutlinesCount.add(element2);
mPdfOutlinesCount.add(element9);
element2.addChild(element3);
element1.addChild(element4);
element1.addChild(element5);
element1.addChild(element6);
element1.addChild(element7);
element7.addChild(element8);
element9.addChild(element10);
element9.addChild(element11);
element11.addChild(element12);
element11.addChild(element13);
element10.addChild(element14);
element10.addChild(element15);
element10.addChild(element16);
element10.addChild(element17);
element10.addChild(element18);
element10.addChild(element19);
}
@SuppressWarnings ( "unchecked" )
private class TreeViewAdapter extends ArrayAdapter{
public TreeViewAdapter(Contextcontext, int textViewResourceId,
Listobjects){
super (context,textViewResourceId,objects);
mInflater=LayoutInflater.from(context);
mfilelist=objects;
mIconCollapse=BitmapFactory.decodeResource(
context.getResources(),R.drawable.outline_list_collapse);
mIconExpand=BitmapFactory.decodeResource(context.getResources(),
R.drawable.outline_list_expand);
}
private LayoutInflatermInflater;
private List<TreeElement>mfilelist;
private BitmapmIconCollapse;
private BitmapmIconExpand;
public int getCount(){
return mfilelist.size();
}
public ObjectgetItem( int position){
return position;
}
public long getItemId( int position){
return position;
}
public ViewgetView( int position,ViewconvertView,ViewGroupparent){
ViewHolderholder;
/*if(convertView==null){*/
convertView=mInflater.inflate(R.layout.main,null );
holder=new ViewHolder();
holder.text=(TextView)convertView.findViewById(R.id.text);
holder.icon=(ImageView)convertView.findViewById(R.id.icon);
convertView.setTag(holder);
/*
*}else{holder=(ViewHolder)convertView.getTag();}
*/
final TreeElementobj=mfilelist.get(position);
holder.text.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(Viewv){
Log.i("TreeView" , "obj.id:" +obj.getId());
}
});
int level=obj.getLevel();
holder.icon.setPadding(25 *(level+ 1 ),
holder.icon.getPaddingTop(),0 ,
holder.icon.getPaddingBottom());
holder.text.setText(obj.getOutlineTitle());
if (obj.isMhasChild()&&(obj.isExpanded()== false )){
holder.icon.setImageBitmap(mIconCollapse);
}else if (obj.isMhasChild()&&(obj.isExpanded()== true )){
holder.icon.setImageBitmap(mIconExpand);
}else if (!obj.isMhasChild()){
holder.icon.setImageBitmap(mIconCollapse);
holder.icon.setVisibility(View.INVISIBLE);
}
return convertView;
}
class ViewHolder{
TextViewtext;
ImageViewicon;
}
}
@Override
protected void onListItemClick(ListViewl,Viewv, int position, long id){
super .onListItemClick(l,v,position,id);
Log.i("TreeView" , "position:" +position);
if (!mPdfOutlinesCount.get(position).isMhasChild()){
Toast.makeText(this ,mPdfOutlinesCount.get(position)
.getOutlineTitle(),2000 );
/*
*intpageNumber;Intenti=getIntent();elementelement=
*mPdfOutlinesCount.get(position);pageNumber=
*element.getOutlineElement().pageNumber;if(pageNumber<=0){
*Stringname=element.getOutlineElement().destName;pageNumber=
*idocviewer.getPageNumberForNameForOutline(name);
*element.getOutlineElement().pageNumber=pageNumber;
*element.getOutlineElement().destName=null;}
*i.putExtra("PageNumber",pageNumber);setResult(RESULT_OK,i);
*finish();
*/
return ;
}
if (mPdfOutlinesCount.get(position).isExpanded()){
mPdfOutlinesCount.get(position).setExpanded(false );
TreeElementelement=mPdfOutlinesCount.get(position);
ArrayList<TreeElement>temp=new ArrayList<TreeElement>();
for ( int i=position+ 1 ;i<mPdfOutlinesCount.size();i++){
if (element.getLevel()>=mPdfOutlinesCount.get(i).getLevel()){
break ;
}
temp.add(mPdfOutlinesCount.get(i));
}
mPdfOutlinesCount.removeAll(temp);
treeViewAdapter.notifyDataSetChanged();
/*
*fileExploreAdapter=newTreeViewAdapter(this,R.layout.outline,
*mPdfOutlinesCount);
*/
//setListAdapter(fileExploreAdapter);
}else {
TreeElementobj=mPdfOutlinesCount.get(position);
obj.setExpanded(true );
int level=obj.getLevel();
int nextLevel=level+ 1 ;
for (TreeElementelement:obj.getChildList()){
element.setLevel(nextLevel);
element.setExpanded(false );
mPdfOutlinesCount.add(position+1 ,element);
}
treeViewAdapter.notifyDataSetChanged();
/*
*fileExploreAdapter=newTreeViewAdapter(this,R.layout.outline,
*mPdfOutlinesCount);
*/
//setListAdapter(fileExploreAdapter);
}
}
}

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