【转】Android 多级菜单

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: [e-mail]
 * </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: [e-mail]
 * </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);
        }
    }

}

评论

1 楼 xhg19901120 2013-07-08  

有没有下载地址啊