Android布局類型資源(三)---菜單

<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.getItemId()){case R.id.about:aboutAlert("本執行個體示範的是如何使用Xml菜單資源來定義菜單！");break;case R.id.exit:exitAlert("真的要退出嗎？");break;}return super.onOptionsItemSelected(item);}private void exitAlert(String msg){//執行個體化AlertDialog.BuilderAlertDialog.Builder builder = new AlertDialog.Builder(this);//設定顯示資訊builder.setMessage(msg).setCancelable(false)//確定按鈕.setPositiveButton("確定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// 結束Activityfinish();}//取消按鈕}).setNegativeButton("取消", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {return;}});//建立對話方塊AlertDialog alert = builder.create();//顯示對話方塊alert.show();}private void aboutAlert(String msg){//執行個體化AlertDialog.BuilderAlertDialog.Builder builder = new AlertDialog.Builder(this);//設定顯示資訊builder.setMessage(msg).setCancelable(false)//確定按鈕.setPositiveButton("確定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {}});//建立對話方塊AlertDialog alert = builder.create();//顯示對話方塊alert.show();}}

public class Option_Menu extends Activity {//功能表項目ID常量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, "開始");menu.add(0, Item_Exit, 0, "退出");return true;}@Overridepublic boolean onOptionsItemSelected(MenuItem item) {switch(item.getItemId()){//功能表項目1被選擇case Item_Start://這隻Activity標題setTitle("開始遊戲");break;//功能表項目1被選擇case Item_Exit:setTitle("退出！");break;}return true;}}

出處：http://blog.csdn.net/cl05300629/article/details/17717573 作者：佇望碧落