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      1 /*
      2  * Copyright (C) 2007 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.example.codelab.rssexample;
     18 
     19 import android.app.Activity;
     20 import android.os.Bundle;
     21 import android.view.Menu;
     22 import android.widget.ArrayAdapter;
     23 import android.widget.ListView;
     24 
     25 //BEGIN_INCLUDE(1_1)
     26 public class MyRssReader extends Activity {
     27     /** Called with the activity is first created. */
     28     @Override
     29     public void onCreate(Bundle savedInstanceState){
     30         super.onCreate(savedInstanceState);
     31 
     32         // Load screen layout.
     33         setContentView(R.layout.main_screen);
     34 
     35 //END_INCLUDE(1_1)
     36 //BEGIN_INCLUDE(1_2)
     37         // Load some simple values into the ListView
     38         mRssList = (ListView) findViewById(R.id.rssListView);
     39         mRssList.setAdapter(
     40                 new ArrayAdapter<String>(
     41                         this,
     42                         R.layout.list_element,
     43                         new String[] { "Scientific American", "BBC", "The Onion", "Engadget" }));
     44 //END_INCLUDE(1_2)
     45 }
     46 
     47     // Store our state before we are potentially bumped from memory.
     48     // We'd like to store the current ListView selection.
     49     @Override
     50     protected void onSaveInstanceState(Bundle outState){
     51         int index = mRssList.getSelectedItemIndex();
     52         if(index > -1){
     53             outState.putInteger("lastIndexItem", index);
     54         }
     55     }
     56 
     57     // Add our initial menu options. We will tweak this menu when it's loaded swap out
     58     // "start service" or "stop service", depending on whether the service is currently running.
     59     @Override
     60     public boolean onCreateOptionsMenu(Menu menu){
     61         // Always call the superclass implementation to
     62         // provide standard items.
     63         super.onCreateOptionsMenu(menu);
     64 
     65         menu.add(0, 0, "Start RSS Service", null);
     66         menu.add(0, 1, "Stop RSS Service", null);
     67         menu.add(0, 2, "Add New Feed", null);
     68         menu.add(0, 3, "Delete Feed", null);
     69         menu.add(0, 4, "Update All Feeds", null);
     70 
     71         return true;
     72     }
     73 
     74     // Toggle out start service/stop service depending on whether the service is running.
     75     @Override
     76     public boolean onPrepareOptionsMenu(Menu menu){
     77         return true;
     78     }
     79 
     80     // Handle our menu clicks.
     81     @Override
     82     public boolean onOptionsItemSelected(Menu.Item item){
     83         switch (item.getId()) {
     84             case 0:
     85                 showAlert(null, "You clicked 'start'!", "ok", null, false, null);
     86                 break;
     87             case 1:
     88                 showAlert(null, "You clicked stop!", "ok", null, false, null);
     89                 break;
     90             case 2:
     91                 showAlert(null, "You clicked 'Add'!", "ok", null, false, null);
     92                 break;
     93             case 3:
     94                 showAlert(null, "You clicked 'Delete'!", "ok", null, false, null);
     95                 break;
     96             case 4:
     97                 showAlert(null, "You clicked 'Update'!", "ok", null, false, null);
     98                 break;
     99             default:
    100                 showAlert(null, "I have no idea what you clicked!", "ok", null, false, null);
    101                 break;
    102         }
    103         return true;
    104     }
    105 
    106     ListView mRssList;
    107 }
    108