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在android開發的過程中系統自帶的菜單往往滿足不了開發中的一些需求，比如說一排最多只能放置三個菜單，坐多只能放置6個，再多的話就會折疊起來，如果我們想再一排顯示4個或5個菜單那么就要自己想辦法處理。
這里我用布局的隱藏并加上動畫來模擬菜單的效果。
要點：
1、隱藏和顯示菜單，我使用了一個線性布局把菜單封裝起來。
<?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、模擬菜單的效果，增加動畫，布局顯示的時候增加一個漸漸底部生氣的效果，隱藏的時候增加一個緩緩下落的效果，顯示菜單動畫文件：
<? 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 >?
隱藏菜單動畫文件：
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<? 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 >
動畫調用：?
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/** * 顯示菜單欄, 重新實現的Option menu. * */ private void showAppMenu() { if (menuShowAnimation == null ) { menuShowAnimation = AnimationUtils .loadAnimation(mContext, R.anim.menuhide); } myLayout.startAnimation(menuShowAnimation); myLayout.setVisibility(View.VISIBLE); } /** * 隱藏菜單欄, 重新實現的Option menu. * */ private void hideAppMenu() { myLayout.setVisibility(View.GONE); if (menuHideAnimation == null ) menuHideAnimation =AnimationUtils .loadAnimation(mContext, R.anim.menushow); myLayout.startAnimation(menuHideAnimation); }
3、控制菜單的隱藏和顯示，需要重寫三個方法public boolean onCreateOptionsMenu(Menu menu),public boolean dispatchKeyEvent(KeyEvent event) 和public boolean dispatchTouchEvent(MotionEvent event)
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@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、實現菜單點擊時候被點擊菜單狀態的般變化，這里我使用了selector來實現，菜單我使用ImageButton將selector賦值給ImageButton 的background即可：一個菜單項
< 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 文件內容如下：
<? 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、頁面的調用使用:<include>標簽來進行引用：
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<? 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 >
這樣的話一個模擬的自定義菜單就基本完成了，菜單控制完整代碼java類：
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： 創建時間：2011-8-30 上午11:16:19
* 說 明:
* 修改歷史：
*/
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);
//返回首頁
imgIndex.setOnClickListener(
new
OnClickListener(){
public
void
onClick(View v) {
//TODO do somthing
}
});
//設置
imgSet.setOnClickListener(
new
OnClickListener(){
public
void
onClick(View v) {
//TODO do somthing
}
});
//查詢
imgNews.setOnClickListener(
new
OnClickListener(){
public
void
onClick(View v) {
//TODO do somthing
}
});
//編輯
imgAdd.setOnClickListener(
new
OnClickListener(){
public
void
onClick(View v) {
//TODO do somthing
}
});
//退出系統
imgQuit.setOnClickListener(
new
OnClickListener(){
public
void
onClick(View v) {
//TODO do somthing
}
});
//素材庫
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);
}
/**
* 顯示菜單欄, 重新實現的Option menu.
* */
private
void
showAppMenu() {
if
(menuShowAnimation ==
null
) {
menuShowAnimation = AnimationUtils
.loadAnimation(mContext, R.anim.menuhide);
}
myLayout.startAnimation(menuShowAnimation);
myLayout.setVisibility(View.VISIBLE);
}
/**
* 隱藏菜單欄, 重新實現的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調用菜單完整代碼：
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： 創建時間：2011-8-30 上午11:13:14
* 說 明:
* 修改歷史：
*/
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);
}
}
實現的效果如下：
作者：
藍之風
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出處：
http://www.cnblogs.com/vaiyanzi/
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