用过UCWEB-Android版的人都应该对其特殊的menu有印象，把menu做成Tab-Menu(支持分页的Menu)，可以容纳比Android传统的menu更丰富的内容(Android的menu超过6项则缩略在[更多]里)，本文参考网上的例子,对例子进行简化以及封装，使其作为一个复合控件融入自己的framework。
先来看看本文程序运行的效果：
TabMenu本身就是一个PopupWindow，PopupWindow上面放了两个GridView,第一个GridView就是分页标签，位于PopupWindow的顶部，第二个GridView是菜单，位于PopupWindow的主体。为了实现PopupWindow的弹出/退出的动画效果，本文使用了以下代码：
在工程的res文件夹里添加anim子目录，再新建文件popup_enter.xml：
Java代码
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromYDelta="100%p" android:toYDelta="0" android:duration="1000" />
<alpha android:fromAlpha="0.0" android:toAlpha="1.0" android:duration="1000" />
</set>
新建文件popup_exit.xml：
Java代码
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromYDelta="0" android:toYDelta="100%p" android:duration="1000" />
<alpha android:fromAlpha="1.0" android:toAlpha="0.0" android:duration="1000" />
</set>
在工程的values文件夹里新建文件popup_animation.xml：
Java代码
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="PopupAnimation" parent="android:Animation">
<item name="android:windowEnterAnimation">@anim/popup_enter</item>
<item name="android:windowExitAnimation">@anim/popup_exit</item>
</style>
</resources>
main.xml的源码如下：
Java代码
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:id="@+id/LinearLayout01"
android:layout_width="fill_parent" android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android">
<TextView android:id="@+id/TextView01" android:layout_height="wrap_content"
android:layout_width="fill_parent" android:text="扩展Menu"></TextView>
</LinearLayout>
TabMenu的封装类TabMenu.java的源码如下：
Java代码
package com.iaiai.activity;
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.TextView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.LinearLayout.LayoutParams;
/**
*
* <p>
* Title: TabMenu.java
* </p>
* <p>
* E-Mail: 176291935@qq.com
* </p>
* <p>
* QQ: 176291935
* </p>
* <p>
* Http: iaiai.iteye.com
* </p>
* <p>
* Create time: 2011-8-17
* </p>
*
* @author 丸子
* @version 0.0.1
*/
public class TabMenu extends PopupWindow {
private GridView gvBody, gvTitle;
private LinearLayout mLayout;
private MenuTitleAdapter titleAdapter;
public TabMenu(Context context, OnItemClickListener titleClick,
OnItemClickListener bodyClick, MenuTitleAdapter titleAdapter,
int colorBgTabMenu, int aniTabMenu) {
super(context);
mLayout = new LinearLayout(context);
mLayout.setOrientation(LinearLayout.VERTICAL);
// 标题选项栏
gvTitle = new GridView(context);
gvTitle.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
gvTitle.setNumColumns(titleAdapter.getCount());
gvTitle.setStretchMode(GridView.STRETCH_COLUMN_WIDTH);
gvTitle.setVerticalSpacing(1);
gvTitle.setHorizontalSpacing(1);
gvTitle.setGravity(Gravity.CENTER);
gvTitle.setOnItemClickListener(titleClick);
gvTitle.setAdapter(titleAdapter);
gvTitle.setSelector(new ColorDrawable(Color.TRANSPARENT));// 选中的时候为透明色
this.titleAdapter = titleAdapter;
// 子选项栏
gvBody = new GridView(context);
gvBody.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
gvBody.setSelector(new ColorDrawable(Color.TRANSPARENT));// 选中的时候为透明色
gvBody.setNumColumns(4);
gvBody.setStretchMode(GridView.STRETCH_COLUMN_WIDTH);
gvBody.setVerticalSpacing(10);
gvBody.setHorizontalSpacing(10);
gvBody.setPadding(10, 10, 10, 10);
gvBody.setGravity(Gravity.CENTER);
gvBody.setOnItemClickListener(bodyClick);
mLayout.addView(gvTitle);
mLayout.addView(gvBody);
// 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.setAnimationStyle(aniTabMenu);
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 SetTitleSelect(int index) {
gvTitle.setSelection(index);
this.titleAdapter.SetFocus(index);
}
public void SetBodySelect(int index, int colorSelBody) {
int count = gvBody.getChildCount();
for (int i = 0; i < count; i++) {
if (i != index)
((LinearLayout) gvBody.getChildAt(i))
.setBackgroundColor(Color.TRANSPARENT);
}
((LinearLayout) gvBody.getChildAt(index))
.setBackgroundColor(colorSelBody);
}
public void SetBodyAdapter(MenuBodyAdapter bodyAdapter) {
gvBody.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 fontColor, fontSize;
private String[] texts;
private int[] resID;
/**
* 设置TabMenu的分页主体
*
* @param context
*调用方的上下文
* @param texts
*按钮集合的字符串数组
* @param resID
*按钮集合的图标资源数组
* @param fontSize
*按钮字体大小
* @param color
*按钮字体颜色
*/
public MenuBodyAdapter(Context context, String[] texts, int[] resID,
int fontSize, int fontColor) {
this.mContext = context;
this.fontColor = fontColor;
this.texts = texts;
this.fontSize = fontSize;
this.resID = resID;
}
public int getCount() {
return texts.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(10, 10, 10, 10);
TextView text = new TextView(this.mContext);
text.setText(texts[position]);
text.setTextSize(fontSize);
text.setTextColor(fontColor);
text.setGravity(Gravity.CENTER);
text.setPadding(5, 5, 5, 5);
ImageView img = new ImageView(this.mContext);
img.setBackgroundResource(resID[position]);
result.addView(img, new LinearLayout.LayoutParams(new LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT)));
result.addView(text);
return result;
}
public View getView(int position, View convertView, ViewGroup parent) {
return makeMenyBody(position);
}
}
/**
* 自定义Adapter,TabMenu的分页标签部分
*
*/
static public class MenuTitleAdapter extends BaseAdapter {
private Context mContext;
private int fontColor, unselcolor, selcolor;
private TextView[] title;
/**
* 设置TabMenu的title
*
* @param context
*调用方的上下文
* @param titles
*分页标签的字符串数组
* @param fontSize
*字体大小
* @param fontcolor
*字体颜色
* @param unselcolor
*未选中项的背景色
* @param selcolor
*选中项的背景色
*/
public MenuTitleAdapter(Context context, String[] titles, int fontSize,
int fontcolor, int unselcolor, int selcolor) {
this.mContext = context;
this.fontColor = fontcolor;
this.unselcolor = unselcolor;
this.selcolor = selcolor;
this.title = new TextView[titles.length];
for (int i = 0; i < titles.length; i++) {
title[i] = new TextView(mContext);
title[i].setText(titles[i]);
title[i].setTextSize(fontSize);
title[i].setTextColor(fontColor);
title[i].setGravity(Gravity.CENTER);
title[i].setPadding(10, 10, 10, 10);
}
}
public int getCount() {
return title.length;
}
public Object getItem(int position) {
return title[position];
}
public long getItemId(int position) {
return title[position].getId();
}
/**
* 设置选中的效果
*/
private void SetFocus(int index) {
for (int i = 0; i < title.length; i++) {
if (i != index) {
title[i].setBackgroundDrawable(new ColorDrawable(unselcolor));// 设置没选中的颜色
title[i].setTextColor(fontColor);// 设置没选中项的字体颜色
}
}
title[index].setBackgroundColor(0x00);// 设置选中项的颜色
title[index].setTextColor(selcolor);// 设置选中项的字体颜色
}
public View getView(int position, View convertView, ViewGroup parent) {
View v;
if (convertView == null) {
v = title[position];
} else {
v = convertView;
}
return v;
}
}
}
testTabMenu介绍了数据的定义以及TabMenu的使用，源码如下：
Java代码
package com.iaiai.activity;
import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.view.Gravity;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Toast;
/**
*
* <p>
* Title: MainMenuView.java
* </p>
* <p>
* E-Mail: 176291935@qq.com
* </p>
* <p>
* QQ: 176291935
* </p>
* <p>
* Http: iaiai.iteye.com
* </p>
* <p>
* Create time: 2011-8-17
* </p>
*
* @author 丸子
* @version 0.0.1
*/
public class MainMenuView extends Activity {
TabMenu.MenuBodyAdapter[] bodyAdapter = new TabMenu.MenuBodyAdapter[3];
TabMenu.MenuTitleAdapter titleAdapter;
TabMenu tabMenu;
int selTitle = 0;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// 设置分页栏的标题
titleAdapter = new TabMenu.MenuTitleAdapter(this, new String[] { "常用",
"设置", "工具" }, 16, 0xFF222222, Color.LTGRAY, Color.WHITE);
// 定义每项分页栏的内容
bodyAdapter[0] = new TabMenu.MenuBodyAdapter(this, new String[] {
"常用1", "常用2", }, new int[] { R.drawable.menu_test,
R.drawable.menu_bookmark }, 13, 0xFFFFFFFF);
bodyAdapter[1] = new TabMenu.MenuBodyAdapter(this, new String[] {
"设置1", "设置2", "设置3" }, new int[] { R.drawable.menu_edit,
R.drawable.menu_delete, R.drawable.menu_fullscreen }, 13,
0xFFFFFFFF);
bodyAdapter[2] = new TabMenu.MenuBodyAdapter(this, new String[] {
"工具1", "工具2", "工具3", "工具4" }, new int[] { R.drawable.menu_copy,
R.drawable.menu_cut, R.drawable.menu_normalmode,
R.drawable.menu_quit }, 13, 0xFFFFFFFF);
tabMenu = new TabMenu(this, new TitleClickEvent(),
new BodyClickEvent(), titleAdapter, 0x55123456,// TabMenu的背景颜色
R.style.PopupAnimation);// 出现与消失的动画
tabMenu.update();
tabMenu.SetTitleSelect(0);
tabMenu.SetBodyAdapter(bodyAdapter[0]);
}
class TitleClickEvent implements OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
selTitle = arg2;
tabMenu.SetTitleSelect(arg2);
tabMenu.SetBodyAdapter(bodyAdapter[arg2]);
}
}
class BodyClickEvent implements OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
tabMenu.SetBodySelect(arg2, Color.GRAY);
String str = "第" + String.valueOf(selTitle) + "栏\n\r" + "第"
+ String.valueOf(arg2) + "项";
Toast.makeText(MainMenuView.this, str, 500).show();
}
}
@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
}
}
