Android Tree 展示多级分类
jopen
12年前
效果:
main.xml:
<?xml version= "1.0" encoding= "utf-8" ?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:layout_width= "fill_parent" android:layout_height="wrap_content" > <ImageView android: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" /> <!--<TextView android: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" /> --> <TextView android: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:
package com.iaiai; import java.util.ArrayList; /** * * <p> * Title: TreeElement.java * </p> * <p> * E-Mail: 176291935@qq.com * </p> * <p> * QQ: 176291935 * </p> * <p> * Http: iaiai.iteye.com * </p> * <p> * Create time: 2011-8-20 * </p> * * @author 丸子 * @version 0.0.1 */ public class TreeElement { private String id; private String outlineTitle; private boolean mhasParent; private boolean mhasChild; private TreeElement parent; private int level; private ArrayList<TreeElement> childList = new ArrayList<TreeElement>(); public String getId() { return id; } public void setId(String id) { this .id = id; } public String getOutlineTitle() { return outlineTitle; } public void setOutlineTitle(String outlineTitle) { 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 TreeElement getParent() { return parent; } public void setParent(TreeElement parent) { this .parent = parent; } // private OutlineElement outlineElement; private boolean expanded; public void addChild(TreeElement c) { this .childList.add(c); this .mhasParent = false ; this .mhasChild = true ; c.parent = this ; c.level = this .level + 1 ; } public TreeElement(String id, String title) { super (); this .id = id; this .outlineTitle = title; this .level = 0 ; this .mhasParent = true ; this .mhasChild = false ; this .parent = null ; } public TreeElement(String id, String outlineTitle, boolean mhasParent, boolean mhasChild, TreeElement parent, 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: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; /** * * <p> * Title: TreeView.java * </p> * <p> * E-Mail: 176291935@qq.com * </p> * <p> * QQ: 176291935 * </p> * <p> * Http: iaiai.iteye.com * </p> * <p> * Create time: 2011-8-20 * </p> * * @author 丸子 * @version 0.0.1 */ public class TreeView extends ListActivity { private ArrayList<TreeElement> mPdfOutlinesCount = new ArrayList<TreeElement>(); private TreeViewAdapter treeViewAdapter = null ; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); initialData(); treeViewAdapter = new TreeViewAdapter( this , R.layout.main, mPdfOutlinesCount); setListAdapter(treeViewAdapter); registerForContextMenu(getListView()); } private void initialData() { TreeElement element1 = new TreeElement( "01" , "关键类" ); TreeElement element2 = new TreeElement( "02" , "应用程序组件" ); TreeElement element3 = new TreeElement( "03" , "Activity和任务" ); TreeElement element4 = new TreeElement( "04" , "激活组件：intent" ); TreeElement element5 = new TreeElement( "05" , "关闭组件" ); TreeElement element6 = new TreeElement( "06" , "manifest文件" ); TreeElement element7 = new TreeElement( "07" , "Intent过滤器" ); TreeElement element8 = new TreeElement( "08" , "Affinity（吸引力）和新任务" ); TreeElement element9 = new TreeElement( "09" , "加载模式" ); TreeElement element10 = new TreeElement( "10" , "加载模式孩子1" ); TreeElement element11 = new TreeElement( "11" , "加载模式孩子2" ); TreeElement element12 = new TreeElement( "12" , "加载模式孩子2的孩子1" ); TreeElement element13 = new TreeElement( "13" , "加载模式孩子2的孩子2" ); TreeElement element14 = new TreeElement( "14" , "加载模式孩子1的孩子1" ); TreeElement element15 = new TreeElement( "15" , "加载模式孩子1的孩子2" ); TreeElement element16 = new TreeElement( "16" , "加载模式孩子1的孩子3" ); TreeElement element17 = new TreeElement( "17" , "加载模式孩子1的孩子4" ); TreeElement element18 = new TreeElement( "18" , "加载模式孩子1的孩子5" ); TreeElement element19 = 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(Context context, int textViewResourceId, List objects) { 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 LayoutInflater mInflater; private List<TreeElement> mfilelist; private Bitmap mIconCollapse; private Bitmap mIconExpand; public int getCount() { return mfilelist.size(); } public Object getItem( int position) { return position; } public long getItemId( int position) { return position; } public View getView( int position, View convertView, ViewGroup parent) { ViewHolder holder; /* 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 TreeElement obj = mfilelist.get(position); holder.text.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { 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 { TextView text; ImageView icon; } } @Override protected void onListItemClick(ListView l, View v, 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 ); /* * int pageNumber; Intent i = getIntent(); element element = * mPdfOutlinesCount .get(position); pageNumber = * element.getOutlineElement().pageNumber; if (pageNumber <= 0) { * String name = 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 ); TreeElement element = 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 = new TreeViewAdapter(this, R.layout.outline, * mPdfOutlinesCount); */ // setListAdapter(fileExploreAdapter); } else { TreeElement obj = mPdfOutlinesCount.get(position); obj.setExpanded(true ); int level = obj.getLevel(); int nextLevel = level + 1 ; for (TreeElement element : obj.getChildList()) { element.setLevel(nextLevel); element.setExpanded(false ); mPdfOutlinesCount.add(position + 1 , element); } treeViewAdapter.notifyDataSetChanged(); /* * fileExploreAdapter = new TreeViewAdapter(this, R.layout.outline, * mPdfOutlinesCount); */ // setListAdapter(fileExploreAdapter); } } }