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。
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
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; } }); }} |
/res/menu/menu.xml
|
1
2
3
4
5
6
7
|
<?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> |
希望本文所述对大家android程序设计有所帮助。
