Android(安卓)自定义系统菜单的背景源码

Android 自定义系统菜单的背景源码

`01`	`package` `lab.sodino.menutest;`

02 import

`03`	`android.content.Context;`

`04`	`import` `android.app.Activity;`

`05`	`import` `android.os.Bundle;`

`06`	`import` `android.os.Handler;`

`07`	`import` `android.util.AttributeSet;`

`08`	`import` `android.view.InflateException;`

`09`	`import` `android.view.LayoutInflater;`

`10`	`import` `android.view.Menu;`

`11`	`import` `android.view.MenuInflater;`

`12`	`import` `android.view.MenuItem;`

`13`	`import` `android.view.View;`

`14`	`import` `android.widget.Toast;`

15 /**

`16`	`* @author Sodino E-mail:sodinoopen@hotmail.com`

`17`	`* @version Time：2011-1-26 下午04:42:04`

18 */

`19`	`public` `class` `MenuAct` `extends` `Activity {`

`20`	`@Override`

`21`	`public` `void` `onCreate(Bundle savedInstanceState) {`

`22`	`super.onCreate(savedInstanceState);`

`23`	`setContentView(R.layout.main);`

24 }

`25`	`public` `boolean` `onCreateOptionsMenu(Menu menu) {`

`26`	`super.onCreateOptionsMenu(menu);`

`27`	`MenuInflater inflater =` `new` `MenuInflater(getApplicationContext());`

`28`	`inflater.inflate(R.menu.menu, menu);`

`29`	`setMenuBackground();`

`30`	`return` `true;`

31 }

`32`	`public` `boolean` `onOptionsItemSelected(MenuItem item) {`

`33`	`String info =` `"";`

`34`	`switch` `(item.getItemId()) {`

`35`	`case` `R.id.menu_add:`

`36`	`info =` `"Add";`

37 break;

`38`	`case` `R.id.menu_delete:`

`39`	`info =` `"Delete";`

40 break;

`41`	`case` `R.id.menu_home:`

`42`	`info =` `"Home";`

43 break;

`44`	`case` `R.id.menu_help:`

`45`	`info =` `"Help";`

46 break;

`47`	`default:`

`48`	`info =` `"NULL";`

49 break;

50 }

`51`	`Toast toast = Toast.makeText(this, info, Toast.LENGTH_SHORT);`

`52`	`toast.show();`

`53`	`return` `super.onOptionsItemSelected(item);`

54 }

`55`	`// 关键代码为重写Layout.Factory.onCreateView()方法自定义布局`

`56`	`protected` `void` `setMenuBackground() {`

`57`	`MenuAct.this.getLayoutInflater().setFactory(new` `android.view.LayoutInflater.Factory() {`

58 /**

`59`	`* name - Tag name to be inflated.<br/>`

`60`	`* context - The context the view is being created in.<br/>`

`61`	`* attrs - Inflation attributes as specified in XML file.<br/>`

62 */

`63`	`public` `View onCreateView(String name, Context context, AttributeSet attrs) {`

`64`	`// 指定自定义inflate的对象`

`65`	`if` `(name.equalsIgnoreCase("com.android.internal.view.menu.IconMenuItemView")) {`

66 try {

`67`	`LayoutInflater f = getLayoutInflater();`

`68`	`final` `View view = f.createView(name,` `null, attrs);`

`69`	`new` `Handler().post(new` `Runnable() {`

`70`	`public` `void` `run() {`

`71`	`// 设置背景图片`

`72`	`view.setBackgroundResource(R.drawable.menu_background);`

73 }

74 });

`75`	`return` `view;`

`76`	`}` `catch` `(InflateException e) {`

`77`	`e.printStackTrace();`

`78`	`}` `catch` `(ClassNotFoundException e) {`

`79`	`e.printStackTrace();`

80 }

81 }

`82`	`return` `null;`

83 }

84 });

85 }

86 }

　　/res/menu/menu.xml

view source print ?

`1`	`<?xml version="1.0"` `encoding="utf-8"?>`

`2`	`<menu xmlns:android="http://schemas.android.com/apk/res/android">`

`3`	`<item android:id="@+id/menu_add"` `android:title="Add"` `android:icon="@drawable/menu_add"></item>`

`4`	`<item android:id="@+id/menu_delete"` `android:title="Delete"` `android:icon="@drawable/menu_delete"></item>`

`5`	`<item android:id="@+id/menu_home"` `android:title="Home"` `android:icon="@drawable/menu_home"></item>`

`6`	`<item android:id="@+id/menu_help"` `android:title="Help"` `android:icon="@drawable/menu_help"></item>`

7 </menu>

转自：http://www.eoeandroid.com/code/2012/0803/2007.html

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