Android自定义Menu（菜单）

先看看自定义Menu效果图：  

新建自定义Menu————>TabMenu.java如下：

package com.ncw;

import android.content.Context;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.PopupWindow;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.LinearLayout.LayoutParams;

public class TabMenu extends PopupWindow {
	private GridView gridView;
	private LinearLayout mLayout;

	public TabMenu(Context context, OnItemClickListener bodyClick, int colorBgTabMenu) {
		super(context);

		mLayout = new LinearLayout(context);
		mLayout.setOrientation(LinearLayout.VERTICAL);

		gridView = new GridView(context);
		gridView.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
				LayoutParams.WRAP_CONTENT));
		gridView.setSelector(new ColorDrawable(Color.TRANSPARENT));// 选中的时候为透明色
		gridView.setNumColumns(4);
		gridView.setStretchMode(GridView.STRETCH_COLUMN_WIDTH);
		gridView.setVerticalSpacing(0);
		gridView.setHorizontalSpacing(0);
		gridView.setPadding(0, 0, 0, 0);
		gridView.setGravity(Gravity.CENTER);
		gridView.setOnItemClickListener(bodyClick);
		mLayout.addView(gridView);

		// 设置默认项
		this.setContentView(mLayout);
		this.setWidth(LayoutParams.FILL_PARENT);
		this.setHeight(LayoutParams.WRAP_CONTENT);
		this.setBackgroundDrawable(new ColorDrawable(colorBgTabMenu));// 设置TabMenu菜单背景
		this.setFocusable(true);// menu菜单获得焦点 如果没有获得焦点menu菜单中的控件事件无法响应
	}

	public void SetBodySelect(int index, int colorSelBody) {
		int count = gridView.getChildCount();
		for (int i = 0; i < count; i++) {
			if (i != index)
				((LinearLayout) gridView.getChildAt(i))
						.setBackgroundColor(Color.TRANSPARENT);
		}
		((LinearLayout) gridView.getChildAt(index))
				.setBackgroundColor(colorSelBody);
	}

	public void SetBodyAdapter(MenuBodyAdapter bodyAdapter) {
		gridView.setAdapter(bodyAdapter);
	}

	/**
	 * 自定义Adapter，TabMenu的每个分页的主体
	 * 
	 */
	static public class MenuBodyAdapter extends BaseAdapter {
		private Context mContext;
		private int[] resID;

		/**
		 * 设置TabMenu的分页主体
		 * 
		 * @param context
		 *            调用方的上下文
		 * @param resID
		 */
		public MenuBodyAdapter(Context context, int[] resID) {
			this.mContext = context;
			this.resID = resID;
		}

		@Override
		public int getCount() {
			return resID.length;
		}

		public Object getItem(int position) {

			return makeMenyBody(position);
		}

		public long getItemId(int position) {
			return position;
		}

		private LinearLayout makeMenyBody(int position) {
			LinearLayout result = new LinearLayout(this.mContext);
			result.setOrientation(LinearLayout.VERTICAL);
			result.setGravity(Gravity.CENTER_HORIZONTAL
					| Gravity.CENTER_VERTICAL);
			result.setPadding(0, 0, 0, 0);

			ImageView img = new ImageView(this.mContext);
			img.setBackgroundResource(resID[position]);
			result.addView(img, new LinearLayout.LayoutParams(new LayoutParams(
					LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT)));
			return result;
		}

		public View getView(int position, View convertView, ViewGroup parent) {
			return makeMenyBody(position);
		}

	}
}

使用自定义Menu————>testTabMenu.java

package com.ncw;

import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;

public class testTabMenu extends Activity {
	TabMenu.MenuBodyAdapter bodyAdapter = new TabMenu.MenuBodyAdapter(this,
			new int[] { R.drawable.menu_01, R.drawable.menu_02,
					R.drawable.menu_03, R.drawable.menu_04 });
	TabMenu tabMenu;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		tabMenu = new TabMenu(this, new BodyClickEvent(), R.drawable.menu_bg);// 出现与消失的动画
		tabMenu.update();
		tabMenu.SetBodyAdapter(bodyAdapter);
	}

	class BodyClickEvent implements OnItemClickListener {
		@Override
		public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
				long arg3) {
			tabMenu.SetBodySelect(arg2, Color.GRAY);
			Log.i("Log", " BodyClickEvent implements OnItemClickListener "
					+ arg2);
		}

	}

	@Override
	/**
	 * 创建MENU
	 */
	public boolean onCreateOptionsMenu(Menu menu) {
		menu.add("menu");// 必须创建一项
		return super.onCreateOptionsMenu(menu);
	}

	@Override
	/**
	 * 拦截MENU
	 */
	public boolean onMenuOpened(int featureId, Menu menu) {
		if (tabMenu != null) {
			if (tabMenu.isShowing())
				tabMenu.dismiss();
			else {
				tabMenu.showAtLocation(findViewById(R.id.LinearLayout01),
						Gravity.BOTTOM, 0, 0);
			}
		}
		return false;// 返回为true 则显示系统menu
	}
}

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/LinearLayout01"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <TextView
        android:id="@+id/TextView01"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="自定义Menu————张亚龙" >
    </TextView>

</LinearLayout>