Android layout type resources (iii) --- menu

<menu xmlns:android="http://schemas.android.com/apk/res/android" >    <item        android:icon="@drawable/ic_launcher"        android:title="File">    <menu>       <group            android:id="@+id/noncheckable_group"           android:checkableBehavior="none">           <item               android:id="@+id/newFile"               android:title="New"               android:alphabeticShortcut="n">           </item>           <item               android:id="@+id/openFile"               android:title="Open"               android:alphabeticShortcut="o">           </item>           <item               android:id="@+id/saveFile"               android:title="Save"               android:alphabeticShortcut="s">           </item>       </group>    </menu>        </item>    <item         android:title="Edit"        android:icon="@drawable/ic_launcher">    <menu>       <group            android:id="@+id/edit_group"           android:checkableBehavior="single">           <item               android:id="@+id/cut"               android:title="Cut">           </item>           <item               android:id="@+id/past"               android:title="Past">           </item>       </group>    </menu></item><item    android:title="Help"   android:icon="@drawable/ic_launcher">    <menu>       <group android:id="@+id/help_group">           <item android:id="@+id/about"               android:title="About">           </item>           <item android:id="@+id/exit"               android:title="Exit">           </item>       </group>    </menu>    </item></menu>

Public class Test_Menu extends Activity {private MenuInflater mi; @ Overrideprotected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. test_menu); mi = new MenuInflater (this) ;}@ Overridepublic boolean onCreateOptionsMenu (Menu menu) {mi. inflate (R. menu. menu, menu); return true ;}@ Overridepublic boolean onOptionsItemSelected (MenuItem item) {switch (item. getI TemId () {case R. id. about: aboutAlert ("This example shows how to use Xml menu resources to define menus! "); Break; case R. id. exit: exitAlert (" are you sure you want to exit? "); Break;} return super. onOptionsItemSelected (item);} private void exitAlert (String msg) {// instantiate AlertDialog. builderAlertDialog. builder builder = new AlertDialog. builder (this); // set the display information builder. setMessage (msg ). setCancelable (false) // click OK. setPositiveButton ("OK", new DialogInterface. onClickListener () {@ Overridepublic void onClick (DialogInterface dialog, int which) {// end Activityfinish () ;}// cancel button }). setNegativeButton ("cancel", new DialogInterface. onClickListener () {@ Overridepublic void onClick (DialogInterface dialog, int which) {return ;}}); // create dialog box AlertDialog alert = builder. create (); // displayed dialog box alert. show ();} private void aboutAlert (String msg) {// instantiate AlertDialog. builderAlertDialog. builder builder = new AlertDialog. builder (this); // set the display information builder. setMessage (msg ). setCancelable (false) // click OK. setPositiveButton ("OK", new DialogInterface. onClickListener () {@ Overridepublic void onClick (DialogInterface dialog, int which) {}}); // create dialog box AlertDialog alert = builder. create (); // displayed dialog box alert. show ();}}

Public class Option_Menu extends Activity {// The Menu item ID constant private static final int Item_Start = Menu. FIRST; private static final int Item_Exit = Menu. FIRST + 1; @ Overrideprotected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. option_menu) ;}@ Overridepublic boolean onCreateOptionsMenu (Menu menu) {menu. add (0, Item_Start, 0, "Start"); menu. add (0, Item_Exit, 0 ," Exit "); return true ;}@ Overridepublic boolean onOptionsItemSelected (MenuItem item) {switch (item. getItemId () {// menu item 1 is selected case Item_Start: // This Activity title setTitle ("Start game"); break; // select case Item_Exit: setTitle ("exit! "); Break;} return true ;}}

Source: http://blog.csdn.net/cl05300629/article/details/17717573 Author: Standing