Menu的動態

package com.robert.sample13;

import android.app.Activity;

import android.app.ActionBar;

import android.app.Fragment;

import android.os.Bundle;

import android.view.LayoutInflater;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.view.ViewGroup;

import android.widget.Toast;

import android.os.Build;

public class MenuActivity extends Activity {

        @Override

        protected void onCreate(Bundle savedInstanceState) {

                super.onCreate(savedInstanceState);

                setContentView(R.layout.activity_menu);

                if (savedInstanceState == null) {

                        getFragmentManager().beginTransaction()

                                        .add(R.id.container, new PlaceholderFragment()).commit();

                }

        }

        @Override

        public boolean onCreateOptionsMenu(Menu menu) {

                // Inflate the menu; this adds items to the action bar if it is present.

                getMenuInflater().inflate(R.menu.menu, menu);

                return true;

        }

        @Override

        public boolean onOptionsItemSelected(MenuItem item) {

                Toast.makeText(this, item.getTitle(), Toast.LENGTH_SHORT).show();

                String selectedMenu;

                switch(item.getItemId()){

                        case R.id.menu1:

                                selectedMenu="menu1";

                                break;

                        case R.id.menu2:

                                selectedMenu="menu2";

                                break;

                        case R.id.menu3:

                                selectedMenu="menu3";

                                break;

                        case R.id.menu4:

                                selectedMenu="menu4";

                                break;

                        default:

                                selectedMenu="";

                }

               

                Toast.makeText(this, selectedMenu, Toast.LENGTH_SHORT).show();

                return true;

        }

        /**

         * A placeholder fragment containing a simple view.

         */

        public static class PlaceholderFragment extends Fragment {

                public PlaceholderFragment() {

                }

                @Override

                public View onCreateView(LayoutInflater inflater, ViewGroup container,

                                Bundle savedInstanceState) {

                        View rootView = inflater.inflate(R.layout.fragment_menu, container,

                                        false);

                        return rootView;

                }

        }

}