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>