[Android] ActionBar Show Overflow (just three buttons behind)

Show more action button for 3 points

We know from the above code that even if we do not show all action buttons on the horizontal screen. We can add a 3-point action button to display the action button with a drop-down display. Information on the Internet, as long as your phone has the menu key Actionbar will not show 3 points of more or 3 points of the menu button.

2. Private void Getoverflowmenu () {
6. try {
8. viewconfiguration config = viewconfiguration.get (this);
10. Field Menukeyfield = viewconfiguration.  Class.getdeclaredfield ("Shaspermanentmenukey");
12. if (Menukeyfield! = null) {
14. Menukeyfield.setaccessible (true);
16. Menukeyfield.setboolean (config, false);
18. }
20. } catch (Exception e) {
22. E.printstacktrace ();
24. }
26. }

This method can be called in the Oncreat () method to display a menu button of 3 points. is the effect of pressing a 3-point action button

• For many pad: Actionbar space is sufficient to display, then the corresponding menu menu, only not set to Ifroom, and then can be placed in the overflow:

• For many phones: there are not enough controls in the Actionbar to display all the menus, even if the ifroom is set, many of the menus are still not fully displayed, so: even if you set the Ifroom menu item, and the menu item without the Ifroom set will be placed in the overflow

2. <menu xmlns:android="http://schemas.android.com/apk/res/android" >
4. <item
6. android:id="@+id/menu_settings"
8. android:orderincategory="
10. android:showasaction="Never"
12. android:title="Settings"/>
14. <item
16. android:id="@+id/action_refresh"
18. android:icon="@drawable/navigation_refresh"
20. android:orderincategory="101"
22. android:showasaction="Ifroom|withtext"
24. android:title="Refresh"/>
26. <item
28. android:id="@+id/action_about"
30. android:icon="@drawable/action_about"
32. android:orderincategory="101"
34. android:showasaction="Ifroom"
36. android:title="about"/>
38. <item
40. android:id="@+id/action_search"
42. android:icon="@drawable/action_search"
44. android:orderincategory="103"
46. android:showasaction="ifroom"/>
48. <item
50. android:id="@+id/action_edit"
52. android:icon="@android:d rawable/ic_menu_edit"
54. android:orderincategory=" the"
56. android:showasaction="Ifroom"
58. android:title="edit"/>
60. <item
62. android:id="@+id/action_help"
64. android:showasaction="Always"
66. android:title="Help"/>
68. <item
70. android:id="@+id/action_email"
72. android:icon="@android:d rawable/ic_dialog_email"
74. android:orderincategory="106"
76. android:showasaction="Ifroom"
78. android:title="email"/>
80. </Menu>

2. Package com.example.demo_actionbarbasic;
4. Import Com.example.demo_actionbarbasic. R
6. Import Android.app.ActionBar;
8. Import android.app.Activity;
10. Import android.content.Intent;
12. Import Android.os.Bundle;
14. Import Android.view.Menu;
16. Import Android.view.MenuItem;
18. Import Android.widget.Toast;
22. Public class Mainactivity extends Activity {
24. private MenuItem MenuItem = null;
28. @Override
30. protected void OnCreate (Bundle savedinstancestate) {
32. super.oncreate (savedinstancestate);
34. Setcontentview (R.layout.activity_main);
36. //Through the Hilde () and Show () methods to control the hiding and display of Actionbar
38. //ActionBar ActionBar = Getactionbar ();
40. //Actionbar.hide ();
42. //Actionbar.show ();
44. }
48. //We can see that the use of Actonbar is the same as the Options menu
50. @Override
52. Public Boolean oncreateoptionsmenu (Menu menu) {
54. //inflate the menu; This adds items to the action bar if it is present.
56. Getmenuinflater (). Inflate (R.menu.activity_main, menu);
58. return true;
60. }
64. @Override
66. Public Boolean onoptionsitemselected (MenuItem item) {
68. switch (Item.getitemid ()) {
70. Case R.id.action_refresh:
72. Toast.maketext (This, "menu Item Refresh selected",
74. Toast.length_short). Show ();
76. Break ;
78. Case R.id.action_about:
80. Toast.maketext (This, "menu Item is about selected", Toast.length_short)
82. . Show ();
84. Break ;
86. Case R.id.action_edit:
88. Toast.maketext (This, "menu Item Edit selected", Toast.length_short)
90. . Show ();
92. Break ;
94. Case R.id.action_search:
96. Toast.maketext (This, "menu Item Search selected",
98. Toast.length_short). Show ();
100. Break ;
102. Case R.id.action_help:
104. Toast.maketext (This, "menu Item settings selected",
106. Toast.length_short). Show ();
108. Break ;
110. Default:
112. Break ;
114. }
116. return super.onoptionsitemselected (item);
118. }
120. }

Reprinted from: http://www.cnblogs.com/SharkBin/p/3559213.html

[Android] ActionBar Show Overflow (just three buttons behind)