Android之自定义系统菜单栏背景

关键代码为重写Layout.Factory.onCreateView()方法自定义布局，不复杂，所以不多说，简单的几段代码：

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

<?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>