android控制項之Menu的實現

今天學習Menu控制項比較簡單，直接上代碼了。首先是布局檔案：

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    >    <TextView android:layout_width="fill_parent"     android:text="Menu測試"     android:textSize="24dp"    android:layout_height="wrap_content"></TextView></LinearLayout>

下面是主程式碼：

package com.cloay;import android.app.Activity;import android.app.AlertDialog;import android.app.Notification;import android.app.NotificationManager;import android.app.PendingIntent;import android.content.DialogInterface;import android.content.Intent;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.widget.Toast;/** * MenuActivity.java * @author cloay * 2011-9-13 */public class MenuActivity extends Activity {    /** Called when the activity is first created. */NotificationManager notificationManager;Intent intent;PendingIntent pendindIntent;Notification notification;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        notificationManager = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);        notification = new Notification();    }@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// TODO Auto-generated method stub/*         *          * add()方法的四個參數，依次是：         *          * 1、組別，如果不分組的話就寫Menu.NONE,         *          * 2、Id，這個很重要，Android根據這個Id來確定不同的菜單         *          * 3、順序，那個菜單現在在前面由這個參數的大小決定         *          * 4、文本，菜單的顯示文本         */ //表徵圖檔案實現android系統內建的檔案menu.add(Menu.NONE, Menu.FIRST + 1, 1, "儲存").setIcon(android.R.drawable.ic_menu_save);menu.add(Menu.NONE, Menu.FIRST + 2, 2, "添加").setIcon(android.R.drawable.ic_menu_add);menu.add(Menu.NONE, Menu.FIRST + 3, 3, "刪除").setIcon(android.R.drawable.ic_menu_delete);menu.add(Menu.NONE, Menu.FIRST + 4, 4, "發送").setIcon(android.R.drawable.ic_menu_send);menu.add(Menu.NONE, Menu.FIRST + 5, 5, "協助").setIcon(android.R.drawable.ic_menu_help);menu.add(Menu.NONE, Menu.FIRST + 6, 6, "退出").setIcon(android.R.drawable.ic_menu_close_clear_cancel);return super.onCreateOptionsMenu(menu);}@Overridepublic boolean onMenuItemSelected(int featureId, MenuItem item) {// TODO Auto-generated method stubswitch(item.getItemId()){case Menu.FIRST + 1:Toast.makeText(MenuActivity.this, "儲存菜單被點擊了!", Toast.LENGTH_LONG).show();//intent = new Intent(MenuActivity.this,Myhandler.class);//startActivity(intent);//overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);break;case Menu.FIRST + 2:Toast.makeText(MenuActivity.this, "添加菜單被點擊了!", Toast.LENGTH_LONG).show();break;case Menu.FIRST + 3:Toast.makeText(MenuActivity.this, "刪除菜單被點擊了!", Toast.LENGTH_LONG).show();break;case Menu.FIRST + 4:Toast.makeText(MenuActivity.this, "發送菜單被點擊了!", Toast.LENGTH_LONG).show();//通知在狀態列顯示的表徵圖//notification.icon = android.R.drawable.ic_lock_silent_mode_off;//通知的內容//notification.tickerText = "發送菜單被點擊了!";//通知時發出的聲音//notification.defaults = Notification.DEFAULT_SOUND;//intent = new Intent(MenuActivity.this,mNotification.class);//intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP|Intent.FLAG_ACTIVITY_NEW_TASK);//pendindIntent = PendingIntent.getActivity(MenuActivity.this, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);//notification.setLatestEventInfo(MenuActivity.this, "按鈕", "發送按鈕", pendindIntent);//notificationManager.notify(913, notification);break;case Menu.FIRST + 5:Toast.makeText(MenuActivity.this, "協助菜單被點擊了!", Toast.LENGTH_LONG).show();break;case Menu.FIRST + 6:AlertDialog alertDialog = new AlertDialog.Builder(MenuActivity.this).setTitle("提示！").setIcon(R.drawable.ask).setMessage("您確定要退出系統嗎?").setPositiveButton("確定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {System.exit(0);dialog.cancel();  //提示對話方塊關閉}}).setNegativeButton("取消",new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubdialog.cancel();    //關閉對話方塊}}).create();alertDialog.show();break;}return super.onMenuItemSelected(featureId, item);}}

運行效果如下：

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