在android开发的过程中系统自带的菜单往往满足不了开发中的一些需求，比如说一排最多只能放置三个菜单，坐多只能放置6个，再多的话就会折叠起来，如果我们想再一排显示4个或5个菜单那么就要自己想办法处理。
这里我用布局的隐藏并加上动画来模拟菜单的效果。
要点：
1、隐藏和显示菜单，我使用了一个线性布局把菜单封装起来。
<?xml version=" 1.0 " encoding=" utf-8 "?> <LinearLayout xmlns:android=" http://schemas.android.com/apk/res/android " android:layout_alignParentBottom=" true " android:background=" @drawable/menubackground " android:layout_width=" fill_parent " android:layout_height=" 144px " android:orientation=" vertical " android:gravity=" center " android:visibility=" gone " android:id=" @+id/lines "> <LinearLayout android:orientation=" horizontal " android:gravity=" center " android:layout_width=" fill_parent " android:layout_height=" 72px " > <ImageButton android:layout_marginLeft=" 8dip " android:id=" @+id/menu_btn_index " android:layout_width=" wrap_content " android:layout_height=" wrap_content " android:background=" @drawable/menu_index_selector " /> <ImageButton android:layout_width=" wrap_content " android:layout_height=" wrap_content " android:background=" @drawable/menu_news_selector " android:id=" @+id/menu_btn_news " /> <ImageButton android:layout_width=" wrap_content " android:layout_height=" wrap_content " android:background=" @drawable/menu_lib_selector " android:id=" @+id/menu_btn_lib " /> <ImageButton android:layout_width=" wrap_content " android:layout_height=" wrap_content " android:background=" @drawable/menu_add_selector " android:id=" @+id/menu_btn_add " /> <ImageButton android:layout_width=" wrap_content " android:layout_height=" wrap_content " android:background=" @drawable/menu_set_selector " android:id=" @+id/menu_btn_set " /> </LinearLayout> <LinearLayout android:orientation=" horizontal " android:gravity=" center " android:layout_width=" fill_parent " android:layout_height=" 72px "> <ImageButton android:layout_marginLeft=" 8dip " android:id=" @+id/menu_btn_index " android:layout_width=" wrap_content " android:layout_height=" wrap_content " android:background=" @drawable/menu_index_selector " /> <ImageButton android:layout_width=" wrap_content " android:layout_height=" wrap_content " android:background=" @drawable/menu_news_selector " android:id=" @+id/menu_btn_news " /> <ImageButton android:layout_width=" wrap_content " android:layout_height=" wrap_content " android:background=" @drawable/menu_lib_selector " android:id=" @+id/menu_btn_lib " /> <ImageButton android:layout_width=" wrap_content " android:layout_height=" wrap_content " android:background=" @drawable/menu_add_selector " android:id=" @+id/menu_btn_add " /> <ImageButton android:layout_width=" wrap_content " android:layout_height=" wrap_content " android:background=" @drawable/menu_quit_selector " android:id=" @+id/menu_btn_quit " /> </LinearLayout> </LinearLayout>
2、模拟菜单的效果，增加动画，布局显示的时候增加一个渐渐底部生气的效果，隐藏的时候增加一个缓缓下落的效果，显示菜单动画文件：
<? xml version="1.0" encoding="utf-8" ?> < set xmlns : android = "http://schemas.android.com/apk/res/android" > < translate android : fromXDelta = "0" android : toXDelta = "0" android : fromYDelta = "00" android : toYDelta = "140" android : duration = "200" /> </ set >
隐藏菜单动画文件：
<? xml version="1.0" encoding="utf-8" ?> < set xmlns : android = "http://schemas.android.com/apk/res/android" > < translate android : fromXDelta = "0" android : toXDelta = "0" android : fromYDelta = "140" android : toYDelta = "00" android : duration = "200" /> </ set >
动画调用：
/** * 显示菜单栏, 重新实现的Option menu. * */ private void showAppMenu() { if (menuShowAnimation == null ) { menuShowAnimation = AnimationUtils .loadAnimation(mContext, R.anim.menuhide); } myLayout.startAnimation(menuShowAnimation); myLayout.setVisibility(View.VISIBLE); } /** * 隐藏菜单栏, 重新实现的Option menu. * */ private void hideAppMenu() { myLayout.setVisibility(View.GONE); if (menuHideAnimation == null ) menuHideAnimation =AnimationUtils .loadAnimation(mContext, R.anim.menushow); myLayout.startAnimation(menuHideAnimation); }
3、控制菜单的隐藏和显示，需要重写三个方法public boolean onCreateOptionsMenu(Menu menu),public boolean dispatchKeyEvent(KeyEvent event) 和public boolean dispatchTouchEvent(MotionEvent event)
@Override public boolean onCreateOptionsMenu(Menu menu) { if (mCustomMenu== null ) mCustomMenu= new CustomMenu(CustomMenuActivity. this ,CustomMenuActivity. this ); mCustomMenu.CreateMenu(); return false ; } @Override public boolean dispatchKeyEvent(KeyEvent event) { if (mCustomMenu!= null ) return mCustomMenu.dispatchKeyEvent(event, super .dispatchKeyEvent(event)); return super .dispatchKeyEvent(event); } @Override public boolean dispatchTouchEvent(MotionEvent event) { if (mCustomMenu!= null ) return mCustomMenu.dispatchTouchEvent(event, super .dispatchTouchEvent(event)); return super .dispatchTouchEvent(event); }
4、实现菜单点击时候被点击菜单状态的般变化，这里我使用了selector来实现，菜单我使用ImageButton将selector赋值给ImageButton 的background即可：一个菜单项
< ImageButton android : layout_marginLeft = "8dip" android : id = "@+id/menu_btn_index" android : layout_width = "wrap_content" android : layout_height = "wrap_content" android : background = "@drawable/menu_index_selector" />
menu_index_selector 文件内容如下：
<? xml version="1.0" encoding="utf-8" ?> <!-- Copyright (C) 2009 The Android Open Source Project Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --> < selector xmlns : android = "http://schemas.android.com/apk/res/android" > < item android : state_window_focused = "false" android : drawable = "@drawable/menu_index" /> < item android : state_pressed = "true" android : drawable = "@drawable/menu_index1" /> < item android : state_focused = "true" android : drawable = "@drawable/menu_index1" /> < item android : drawable = "@drawable/menu_index" /> </ selector >
5、页面的调用使用:<include>标签来进行引用：
<? xml version="1.0" encoding="utf-8" ?> < RelativeLayout xmlns : android = "http://schemas.android.com/apk/res/android" android : orientation = "vertical" android : layout_width = "fill_parent" android : layout_height = "fill_parent" > < include layout = "@layout/menu_layout" /> </ RelativeLayout >
这样的话一个模拟的自定义菜单就基本完成了，菜单控制完整代码java类：
package
com.demo.utils;
import
android.app.Activity;
import
android.content.Context;
import
android.content.res.Resources;
import
android.view.KeyEvent;
import
android.view.MotionEvent;
import
android.view.View;
import
android.view.View.OnClickListener;
import
android.view.animation.Animation;
import
android.view.animation.AnimationUtils;
import
android.widget.ImageButton;
import
android.widget.LinearLayout;
import
com.demo.HelloWorld.R;
/**
* @author Administrator
* xsl xushilin@kingtoneinfo.com
* @version： 创建时间：2011-8-30 上午11:16:19
* 说 明:
* 修改历史：
*/
public
class
CustomMenu {
private
LinearLayout myLayout;
private
Context mContext;
private
Activity mActivity;
private
Animation menuShowAnimation =
null
;
private
Animation menuHideAnimation =
null
;
private
Resources res;
public
int
screen_height;
private
ImageButton imgIndex,imgSet,imgNews,imgAdd,imgQuit,imgLib;
public
CustomMenu(Context context,Activity activity){
mContext=context;
mActivity=activity;
res = mContext.getResources();
screen_height = res.getDisplayMetrics().heightPixels;
myLayout=(LinearLayout)activity.findViewById(R.id.lines);
imgIndex=(ImageButton)activity.findViewById(R.id.menu_btn_index);
imgSet=(ImageButton)activity.findViewById(R.id.menu_btn_set);
imgNews=(ImageButton)activity.findViewById(R.id.menu_btn_news);
imgAdd=(ImageButton)activity.findViewById(R.id.menu_btn_add);
imgQuit=(ImageButton)activity.findViewById(R.id.menu_btn_quit);
imgLib=(ImageButton)activity.findViewById(R.id.menu_btn_lib);
//返回首页
imgIndex.setOnClickListener(
new
OnClickListener(){
public
void
onClick(View v) {
//TODO do somthing
}
});
//设置
imgSet.setOnClickListener(
new
OnClickListener(){
public
void
onClick(View v) {
//TODO do somthing
}
});
//查询
imgNews.setOnClickListener(
new
OnClickListener(){
public
void
onClick(View v) {
//TODO do somthing
}
});
//编辑
imgAdd.setOnClickListener(
new
OnClickListener(){
public
void
onClick(View v) {
//TODO do somthing
}
});
//退出系统
imgQuit.setOnClickListener(
new
OnClickListener(){
public
void
onClick(View v) {
//TODO do somthing
}
});
//素材库
imgLib.setOnClickListener(
new
OnClickListener(){
public
void
onClick(View v) {
//TODO do somthing
}
});
}
public
void
CreateMenu(){
if
(myLayout.getVisibility()==View.GONE)
showAppMenu();
//myLayout.setVisibility(View.VISIBLE);
else
hideAppMenu();
//myLayout.setVisibility(View.GONE);
}
/**
* 显示菜单栏, 重新实现的Option menu.
* */
private
void
showAppMenu() {
if
(menuShowAnimation ==
null
) {
menuShowAnimation = AnimationUtils
.loadAnimation(mContext, R.anim.menuhide);
}
myLayout.startAnimation(menuShowAnimation);
myLayout.setVisibility(View.VISIBLE);
}
/**
* 隐藏菜单栏, 重新实现的Option menu.
* */
private
void
hideAppMenu() {
myLayout.setVisibility(View.GONE);
if
(menuHideAnimation ==
null
)
menuHideAnimation =AnimationUtils
.loadAnimation(mContext, R.anim.menushow);
myLayout.startAnimation(menuHideAnimation);
}
public
boolean
dispatchTouchEvent(MotionEvent event,
boolean
b) {
if
(myLayout.getVisibility() == View.VISIBLE) {
int
y = (
int
) event.getRawY();
if
(y < screen_height - myLayout.getHeight()) {
hideAppMenu();
return
true
;
}
}
return
b;
}
public
boolean
dispatchKeyEvent(KeyEvent event,
boolean
b) {
int
act = event.getAction();
int
code = event.getKeyCode();
// app menu like option menu
if
(code == KeyEvent.KEYCODE_MENU){
if
(act == KeyEvent.ACTION_DOWN){
if
(myLayout.getVisibility() == View.VISIBLE) {
hideAppMenu();
}
else
{
showAppMenu();
}
return
true
;
}
}
else
if
(code == KeyEvent.KEYCODE_BACK){
if
(myLayout.getVisibility() == View.VISIBLE) {
hideAppMenu();
return
true
;
}
}
return
b;
}
}
activity调用菜单完整代码：
package
com.demo.ui;
import
com.demo.HelloWorld.R;
import
com.demo.utils.CustomMenu;
import
android.app.Activity;
import
android.os.Bundle;
import
android.view.KeyEvent;
import
android.view.Menu;
import
android.view.MotionEvent;
/**
* @author XSL
* xsl xushilin@kingtoneinfo.com
* @version： 创建时间：2011-8-30 上午11:13:14
* 说 明:
* 修改历史：
*/
public
class
CustomMenuActivity
extends
Activity {
private
CustomMenu mCustomMenu=
null
;
@Override
public
void
onCreate(Bundle savedInstanceState) {
super
.onCreate(savedInstanceState);
setContentView(R.layout.custom_menu);
}
@Override
public
boolean
onCreateOptionsMenu(Menu menu) {
if
(mCustomMenu==
null
)
mCustomMenu=
new
CustomMenu(CustomMenuActivity.
this
,CustomMenuActivity.
this
);
mCustomMenu.CreateMenu();
return
false
;
}
@Override
public
boolean
dispatchKeyEvent(KeyEvent event) {
if
(mCustomMenu!=
null
)
return
mCustomMenu.dispatchKeyEvent(event,
super
.dispatchKeyEvent(event));
return
super
.dispatchKeyEvent(event);
}
@Override
public
boolean
dispatchTouchEvent(MotionEvent event) {
if
(mCustomMenu!=
null
)
return
mCustomMenu.dispatchTouchEvent(event,
super
.dispatchTouchEvent(event));
return
super
.dispatchTouchEvent(event);
}
}
实现的效果如下：
作者：
蓝之风
出处：
http://www.cnblogs.com/vaiyanzi/
本文版权归作者和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。
