本文实例讲述了android编程实现自定义系统菜单背景的方法。分享给大家供大家参考，具体如下：
不多说，上图，见代码。
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package lab.sodino.menutest;
import android.content.context;
import android.app.activity;
import android.os.bundle;
import android.os.handler;
import android.util.attributeset;
import android.view.inflateexception;
import android.view.layoutinflater;
import android.view.menu;
import android.view.menuinflater;
import android.view.menuitem;
import android.view.view;
import android.widget.toast;
/**
* @author sodino e-mail:sodinoopen@hotmail.com
* @version time：2011-1-26 下午04:42:04
*/
public class menuact extends activity {
@override
public void oncreate(bundle savedinstancestate) {
super.oncreate(savedinstancestate);
setcontentview(r.layout.main);
}
public boolean oncreateoptionsmenu(menu menu) {
super.oncreateoptionsmenu(menu);
menuinflater inflater = new menuinflater(getapplicationcontext());
inflater.inflate(r.menu.menu, menu);
setmenubackground();
return true;
}
public boolean onoptionsitemselected(menuitem item) {
string info = "";
switch (item.getitemid()) {
case r.id.menu_add:
info = "add";
break;
case r.id.menu_delete:
info = "delete";
break;
case r.id.menu_home:
info = "home";
break;
case r.id.menu_help:
info = "help";
break;
default:
info = "null";
break;
}
toast toast = toast.maketext(this, info, toast.length_short);
toast.show();
return super.onoptionsitemselected(item);
}
// 关键代码为重写layout.factory.oncreateview()方法自定义布局
protected void setmenubackground() {
menuact.this.getlayoutinflater().setfactory(new android.view.layoutinflater.factory() {
/**
* name - tag name to be inflated.<br/>
* context - the context the view is being created in.<br/>
* attrs - inflation attributes as specified in xml file.<br/>
*/
public view oncreateview(string name, context context, attributeset attrs) {
// 指定自定义inflate的对象
if (name.equalsignorecase("com.android.internal.view.menu.iconmenuitemview")) {
try {
layoutinflater f = getlayoutinflater();
final view view = f.createview(name, null, attrs);
new handler().post(new runnable() {
public void run() {
// 设置背景图片
view.setbackgroundresource(r.drawable.menu_background);
}
});
return view;
} catch (inflateexception e) {
e.printstacktrace();
} catch (classnotfoundexception e) {
e.printstacktrace();
}
}
return null;
}
});
}
}
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/res/menu/menu.xml
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<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="@+id/menu_add" android:title="add" android:icon="@drawable/menu_add"></item>
<item android:id="@+id/menu_delete" android:title="delete" android:icon="@drawable/menu_delete"></item>
<item android:id="@+id/menu_home" android:title="home" android:icon="@drawable/menu_home"></item>
<item android:id="@+id/menu_help" android:title="help" android:icon="@drawable/menu_help"></item>
</menu>
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希望本文所述对大家android程序设计有所帮助。