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 onCreate(Bundle savedInstanceState)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 onSaveInstanceState(Bundle outState)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 onCreateOptionsMenu(Menu menu)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 onPrepareOptionsMenu(Menu menu)76 public boolean onPrepareOptionsMenu(Menu menu){ 77 return true; 78 } 79 80 // Handle our menu clicks. 81 @Override onOptionsItemSelected(Menu.Item item)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