auto import from //depot/cupcake/@135843
This commit is contained in:
The Android Open Source Project
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/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.example.codelab.rssexample;
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import android.app.Activity;
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import android.content.ContentValues;
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import android.content.Context;
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import android.content.Intent;
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import android.database.Cursor;
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import android.graphics.Typeface;
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import android.net.Uri;
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import android.os.Bundle;
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import android.view.Menu;
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import android.view.View;
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import android.view.ViewGroup;
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import android.webkit.WebView;
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import android.widget.AdapterView;
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import android.widget.ListView;
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import android.widget.SimpleCursorAdapter;
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import android.widget.TextView;
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import android.widget.AdapterView.OnItemSelectedListener;
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import java.util.logging.Logger;
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public class MyRssReader5 extends Activity implements OnItemSelectedListener {
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private ListView mRssList;
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private Cursor mCur;
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private RssCursorAdapter mAdap;
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private WebView mWebView;
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private static final int ADD_ELEMENT_REQUEST = 1;
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private Logger mLogger = Logger.getLogger(this.getPackageName());
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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//
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// Load screen layout.
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setContentView(R.layout.main_screen2);
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// Populate ArrayAdapter and bind it to ListView
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mRssList = (ListView)findViewById(R.id.rssListView);
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mRssList.setOnItemSelectedListener(this);
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mWebView = (WebView)findViewById(R.id.rssWebView);
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mCur = managedQuery(RssContentProvider.CONTENT_URI, // Query for all items.
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null,
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null,
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RssContentProvider.DEFAULT_SORT_ORDER);
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mAdap = new RssCursorAdapter(
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this,
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R.layout.list_element, // Our layout resource.
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mCur,
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new String[]{RssContentProvider.TITLE}, // Columns to retrieve.
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new int[]{R.id.list_item}); // IDs of widgets to display
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mRssList.setAdapter(mAdap); // the corresponding column.
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// Set the last selected item.
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// (icicle is only set if this is being restarted).
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if(savedInstanceState != null && savedInstanceState.containsKey("lastIndexItem")){
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mRssList.setSelection(savedInstanceState.getInteger("lastIndexItem"));
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}
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}
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//BEGIN_INCLUDE(5_4)
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// Listener to listen for list selection changes, and send the new text to
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// the web view.
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public void onItemSelected(AdapterView parent, View v, int position, long id){
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// Need to nest this in a try block because we get called sometimes
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// with the index of a recently deleted item.
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String content = "";
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try{
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content = mCur.getString(mCur.getColumnIndex(RssContentProvider.CONTENT));
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mLogger.info("MyRssReader5 content string:" + content);
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}
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catch (Exception e){
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// This method is sometimes called after a backing data item
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// is deleted. In that case, we don't want to throw an error.
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mLogger.warning("MyRssReader5.onItemSelected() couldn't get the content" +
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"from the cursor " + e.getMessage());
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}
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mWebView.loadData(content, "text/html", "utf-8");
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}
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//END_INCLUDE(5_4)
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public void onNothingSelected(AdapterView parent){
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mWebView.loadData("<html><body><p>No selection chosen</p></body></html>", "text/html", "utf-8");
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}
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// Store our state before we are potentially bumped from memory.
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// We'd like to store the current ListView selection.
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@Override
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protected void onSaveInstanceState(Bundle outState){
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int index = mRssList.getSelectedItemIndex();
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if(index > -1){
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outState.putInteger("lastIndexItem", index);
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}
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}
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// Add our initial menu options. We will tweak this menu when it's loaded swap out
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// "start service" or "stop service", depending on whether the service is currently running.
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@Override
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public boolean onCreateOptionsMenu(Menu menu){
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// Always call the superclass implementation to
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// provide standard items.
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super.onCreateOptionsMenu(menu);
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menu.add(0, 0, R.string.menu_option_start, null);
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menu.add(0, 1, R.string.menu_option_stop, null);
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menu.add(0, 2, R.string.menu_option_add, null);
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menu.add(0, 3, R.string.menu_option_delete, null);
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menu.add(0, 4, R.string.menu_option_update, null);
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return true;
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}
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// Toggle out start service/stop service depending on whether the service is running.
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@Override
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public boolean onPrepareOptionsMenu(Menu menu){
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return true;
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}
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// Handle our menu clicks.
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@Override
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public boolean onOptionsItemSelected(Menu.Item item){
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super.onOptionsItemSelected(item);
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switch (item.getId()){
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case 0: // Start service
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Intent basicStartIntent = new Intent(RssService.class);
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startService(basicStartIntent);
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break;
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case 1: // Stop service
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Intent stopIntent = new Intent(RssService.class);
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stopService(stopIntent);
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break;
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case 2: // Add Item
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Intent addIntent = new Intent(AddRssItem.class);
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// Use an ID so that if we create a "remove item" form we
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// can tell which form is returning a value.
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startActivityForResult(addIntent, ADD_ELEMENT_REQUEST);
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break;
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case 3: // Delete item.
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if(mRssList.hasFocus()){
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int currentSelectionIndex = mRssList.getSelectedItemIndex();
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mLogger.info("MyRssReader5.onOptionsItemSelected(): Deleting list member:" +
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mRssList.getSelectedItemIndex());
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// Create our content URI by adding the ID of the currently selected item using a
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// convenience method.
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Long itemID = mAdap.getItemId(currentSelectionIndex);
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getContentResolver().delete(RssContentProvider.CONTENT_URI.addId(itemID), null);
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}
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break;
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case 4: // Requery all
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Bundle startupVals = new Bundle(1);
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startupVals.putBoolean(RssService.REQUERY_KEY, true);
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Intent requeryIntent = new Intent(RssService.class);
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startService(requeryIntent, startupVals);
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break;
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default:
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showAlert(null, "I have no idea what you clicked!", "ok", null, false, null);
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break;
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}
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return true;
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}
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// Called by the "Add RSS Item" floating screen when it closes.
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@Override
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protected void onActivityResult(int requestCode, int resultCode, Intent data){
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if(resultCode == RESULT_OK){
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switch (requestCode){
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case ADD_ELEMENT_REQUEST:
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ContentValues vals = new ContentValues(5);
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vals.put(RssContentProvider.TITLE, data.getStringExtra(RssContentProvider.TITLE));
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vals.put(RssContentProvider.URL, data.getStringExtra(RssContentProvider.URL));
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vals.put(RssContentProvider.CONTENT, data.getStringExtra(RssContentProvider.CONTENT));
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vals.put(RssContentProvider.LAST_UPDATED, data.getIntExtra(RssContentProvider.LAST_UPDATED, 0));
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Uri uri = getContentResolver().insert(
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RssContentProvider.CONTENT_URI,
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vals);
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if(uri != null){
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// Tell the service to requery the service, then set
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// it as the active selection.
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Bundle startupVals = new Bundle(1);
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startupVals.putString(RssService.RSS_URL, data.getStringExtra("URL"));
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Intent startIntent = new Intent(RssService.class);
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startIntent.putExtras(startupVals);
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startService(startIntent);
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mRssList.setSelection(mRssList.getCount() - 1);
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}
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break;
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default:
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break;
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}
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}
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}
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// Our private ArrayAdapter implementation that returns a bold TextView for
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// RSS items that are unread, or a normal TextView for items that have been read.
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private class RssCursorAdapter extends SimpleCursorAdapter {
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public RssCursorAdapter(Context context, int layout, Cursor c, String[] from, int[] to) {
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super(context, layout, c, from, to);
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}
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// Here's our only important override--returning the list item.
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@Override
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public View getView(int position, View convertView, ViewGroup parent){
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TextView view = (TextView)super.getView(position, convertView, parent);
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if(view != null){
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// Now get the hasBeenRead value to determine the font.
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int hasBeenReadColumnIndex = getCursor().getColumnIndex(RssContentProvider.HAS_BEEN_READ);
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boolean hasBeenRead = (getCursor().getInt(hasBeenReadColumnIndex) == 1 ? true : false);
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if(! hasBeenRead){
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Typeface type = view.getTypeface();
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view.setTypeface(Typeface.create(type, Typeface.BOLD_ITALIC));
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}
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}
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return view;
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}
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}
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}
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