[Android]Menu及Toast使用範例

<MenuToast.java>

   1: package com.android.menutoast;

   2:  

   3: import android.app.Activity;

   4: import android.app.AlertDialog;

   5: import android.content.DialogInterface;

   6: import android.os.Bundle;

   7: import android.view.Menu;

   8: import android.view.MenuItem;

   9: import android.widget.Toast;

  10:  

  11: public class MenuToast extends Activity {

  12:     protected static final int MENU_Terry = Menu.FIRST;

  13:     protected static final int MENU_Cathy = Menu.FIRST+1;

  14:     protected static final int MENU_Gary = Menu.FIRST+2;

  15:     protected static final int MENU_Sunny = Menu.FIRST+3;

  16:     protected static final int MENU_Result = Menu.FIRST+4;

  17:     protected static final int MENU_About = Menu.FIRST+5;

  18:     protected static final int MENU_QUIT = Menu.FIRST+6;

  19:     private int cntTerry, cntCathy, cntGary, cntSunny;

  20:     

  21:     /** Called when the activity is first created. */

  22:     @Override

  23:     public void onCreate(Bundle savedInstanceState) {

  24:         super.onCreate(savedInstanceState);

  25:         setContentView(R.layout.main);

  26:     }

  27:     

  28:     @Override

  29:     public boolean onCreateOptionsMenu(Menu menu){

  30:         super.onCreateOptionsMenu(menu);

  31:         menu.add(0,MENU_Terry,0,"Terry");

  32:         menu.add(0,MENU_Cathy,0,"Cathy");

  33:         menu.add(0,MENU_Gary,0,"Gary");

  34:         menu.add(0,MENU_Sunny,0,"Sunny");

  35:         menu.add(0,MENU_Result,0,"投票結果");

  36:         menu.add(0,MENU_About,0,"關於");

  37:         menu.add(0,MENU_QUIT,0,"離開");

  38:         return true;

  39:     }

  40:     

  41:     

  42:     public boolean onOptionsItemSelected(MenuItem item){

  43:         super.onOptionsItemSelected(item);

  44:         switch(item.getItemId()){

  45:         case MENU_Terry:

  46:             cntTerry = cntTerry + 1;

  47:             Toast.makeText(this , "Terry 加 1 票！ 已獲得 " + cntTerry + " 票.", Toast.LENGTH_SHORT).show();

  48:             break;

  49:             

  50:         case MENU_Cathy:

  51:             cntCathy = cntCathy + 1;

  52:             Toast.makeText(this , "Cathy 加 1 票！ 已獲得 " + cntCathy + " 票.", Toast.LENGTH_SHORT).show();

  53:             break;

  54:             

  55:         case MENU_Gary:

  56:             cntGary = cntGary + 1;

  57:             Toast.makeText(this , "Gary 加 1 票！ 已獲得 " + cntGary + " 票.", Toast.LENGTH_SHORT).show();

  58:             break;

  59:             

  60:         case MENU_Sunny:

  61:             cntSunny = cntSunny + 1;

  62:             Toast.makeText(this , "Sunny 加 1 票！ 已獲得 " + cntSunny + " 票.", Toast.LENGTH_SHORT).show();

  63:             break;    

  64:  

  65:         case MENU_Result:

  66:             Toast.makeText(this , "投票結果:" + "\nTerry : " + cntTerry + " 票"

  67:                                            + "\nCathy : " + cntCathy + " 票"

  68:                                            + "\nGary  : " + cntGary + " 票"

  69:                                            + "\nSunny : " + cntSunny + " 票"

  70:                                 , Toast.LENGTH_LONG).show();

  71:             break;        

  72:             

  73:         case MENU_About:

  74:             openOptionsDialog();

  75:             break;    

  76:             

  77:         case MENU_QUIT:

  78:             Toast.makeText(this , "感謝使用本程式 ！", Toast.LENGTH_LONG).show();

  79:             android.os.Process.killProcess(android.os.Process.myPid());

  80:             break;

  81:         }

  82:         return true;

  83:     }

  84:  

  85:     private void openOptionsDialog() {

  86:         AlertDialog.Builder dialog = new AlertDialog.Builder(MenuToast.this);

  87:         dialog.setTitle("關於  MenuToast 投票系統");

  88:         dialog.setMessage("作者：Terry Wu \n日期：2012/02/28 \ne-mail:terry.wuteyu@gmail.com");

  89:         dialog.setPositiveButton("確定", 

  90:                 new DialogInterface.OnClickListener() {

  91:                     public void onClick(DialogInterface arg0, int arg1) {

  92:  

  93:                     }

  94:                 });

  95:         dialog.show();

  96:     }

  97:     

  98: }

<main.xml>

   1: <?xml version="1.0" encoding="utf-8"?>

   2: <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

   3:     android:layout_width="fill_parent"

   4:     android:layout_height="fill_parent"

   5:     android:orientation="vertical" >

   6:  

   7:     <TextView

   8:         android:id="@+id/textView"

   9:         android:layout_width="wrap_content"

  10:         android:layout_height="wrap_content"

  11:         android:text="@string/prompt_message" />

  12:  

  13: </LinearLayout>

<strings.xml>
   1: <?xml version="1.0" encoding="utf-8"?>

   2: <resources>

   3:  

   4:     <string name="hello">Hello World, MenuToast!</string>

   5:     <string name="app_name">MenuToast</string>

   6:     <string name="prompt_message">【請按 MENU 後，點選人名進行投票 !】</string>

   7:     

   8:  

   9: </resources>