Android控件之Menu的實現

今天學習Menu控件比較簡單，直接上代碼了。首先是布局文件：

1. <?xml version="1.0" encoding="utf-8"?>
2. <LinearLayout xmlns:Android="http://schemas.android.com/apk/res/android"
3. android:orientation="vertical"
4. android:layout_width="fill_parent"
5. android:layout_height="fill_parent"
6. >
7. <TextView android:layout_width="fill_parent"
8. android:text="Menu測試"
9. android:textSize="24dp"
10. android:layout_height="wrap_content"></TextView>
11. </LinearLayout>

1. package com.cloay;
3. import android.app.Activity;
4. import android.app.AlertDialog;
5. import android.app.Notification;
6. import android.app.NotificationManager;
7. import android.app.PendingIntent;
8. import android.content.DialogInterface;
9. import android.content.Intent;
10. import android.os.Bundle;
11. import android.view.Menu;
12. import android.view.MenuItem;
13. import android.widget.Toast;
15. /**
16. * MenuActivity.java
17. * @author cloay
18. * 2011-9-13
19. */
20. public class MenuActivity extends Activity {
21. /** Called when the activity is first created. */
22. NotificationManager notificationManager;
23. Intent intent;
24. PendingIntent pendindIntent;
25. Notification notification;
26. @Override
27. public void onCreate(Bundle savedInstanceState) {
28. super.onCreate(savedInstanceState);
29. setContentView(R.layout.main);
30. notificationManager = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
31. notification = new Notification();
32. }
34. @Override
35. public boolean onCreateOptionsMenu(Menu menu) {
36. // TODO Auto-generated method stub
37. /*
38. *
39. * add()方法的四個參數，依次是：
40. *
41. * 1、組別，如果不分組的話就寫Menu.NONE,
42. *
43. * 2、Id，這個很重要，Android根據這個Id來確定不同的菜單
44. *
45. * 3、順序，那個菜單現在在前面由這個參數的大小決定
46. *
47. * 4、文本，菜單的顯示文本
48. */
49. //圖標文件實現android系統自帶的文件
50. menu.add(Menu.NONE, Menu.FIRST + 1, 1, "保存").setIcon(android.R.drawable.ic_menu_save);
51. menu.add(Menu.NONE, Menu.FIRST + 2, 2, "添加").setIcon(android.R.drawable.ic_menu_add);
52. menu.add(Menu.NONE, Menu.FIRST + 3, 3, "刪除").setIcon(android.R.drawable.ic_menu_delete);
53. menu.add(Menu.NONE, Menu.FIRST + 4, 4, "發送").setIcon(android.R.drawable.ic_menu_send);
54. menu.add(Menu.NONE, Menu.FIRST + 5, 5, "幫助").setIcon(android.R.drawable.ic_menu_help);
55. menu.add(Menu.NONE, Menu.FIRST + 6, 6, "退出").setIcon(android.R.drawable.ic_menu_close_clear_cancel);
56. return super.onCreateOptionsMenu(menu);
57. }
59. @Override
60. public boolean onMenuItemSelected(int featureId, MenuItem item) {
61. // TODO Auto-generated method stub
62. switch(item.getItemId()){
63. case Menu.FIRST + 1:
64. Toast.makeText(MenuActivity.this, "保存菜單被點擊了!", Toast.LENGTH_LONG).show();
65. //intent = new Intent(MenuActivity.this,Myhandler.class);
66. //startActivity(intent);
67. //overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
68. break;
69. case Menu.FIRST + 2:
70. Toast.makeText(MenuActivity.this, "添加菜單被點擊了!", Toast.LENGTH_LONG).show();
71. break;
72. case Menu.FIRST + 3:
73. Toast.makeText(MenuActivity.this, "刪除菜單被點擊了!", Toast.LENGTH_LONG).show();
74. break;
75. case Menu.FIRST + 4:
76. Toast.makeText(MenuActivity.this, "發送菜單被點擊了!", Toast.LENGTH_LONG).show();
77. //通知在狀態欄顯示的圖標
78. //notification.icon = android.R.drawable.ic_lock_silent_mode_off;
79. //通知的內容
80. //notification.tickerText = "發送菜單被點擊了!";
81. //通知時發出的聲音
82. //notification.defaults = Notification.DEFAULT_SOUND;
83. //intent = new Intent(MenuActivity.this,mNotification.class);
84. //intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP|Intent.FLAG_ACTIVITY_NEW_TASK);
85. //pendindIntent = PendingIntent.getActivity(MenuActivity.this, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);
86. //notification.setLatestEventInfo(MenuActivity.this, "按鈕", "發送按鈕", pendindIntent);
87. //notificationManager.notify(913, notification);
88. break;
89. case Menu.FIRST + 5:
90. Toast.makeText(MenuActivity.this, "幫助菜單被點擊了!", Toast.LENGTH_LONG).show();
91. break;
92. case Menu.FIRST + 6:
93. AlertDialog alertDialog = new AlertDialog.Builder(MenuActivity.this)
94. .setTitle("提示！")
95. .setIcon(R.drawable.ask)
96. .setMessage("您確定要退出系統嗎?")
97. .setPositiveButton("確定",
98. new DialogInterface.OnClickListener() {
99. @Override
100. public void onClick(DialogInterface dialog, int which) {
101. System.exit(0);
102. dialog.cancel(); //提示對話框關閉
103. }
104. })
105. .setNegativeButton("取消",
106. new DialogInterface.OnClickListener() {
108. @Override
109. public void onClick(DialogInterface dialog, int which) {
110. // TODO Auto-generated method stub
111. dialog.cancel(); //關閉對話框
112. }
113. }).create();
114. alertDialog.show();
115. break;
116. }
117. return super.onMenuItemSelected(featureId, item);
118. }
119. }

運行效果如下：