Android Open Source - BBC-News-Reader Widget Config Activity

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License

The source code is released under:

Copyright (c) 2011, 2012, Digital Lizard (Oscar Key, Thomas Boby) All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the...

Java Source Code

/*******************************************************************************
 * BBC News Reader//from w ww. j ava 2 s .  co  m
 * Released under the BSD License. See README or LICENSE.
 * Copyright (c) 2011, Digital Lizard (Oscar Key, Thomas Boby)
 * All rights reserved.
 ******************************************************************************/
package com.digitallizard.bbcnewsreader.widget;

import android.app.AlertDialog;
import android.app.Dialog;
import android.appwidget.AppWidgetManager;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.widget.AbsListView;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import com.actionbarsherlock.app.SherlockActivity;
import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuItem;
import com.digitallizard.bbcnewsreader.R;
import com.digitallizard.bbcnewsreader.ReaderActivity;
import com.digitallizard.bbcnewsreader.data.DatabaseHandler;

public class WidgetConfigActivity extends SherlockActivity {
  ListView listView;
  String[] enabledCategoriesNames;
  SharedPreferences settings;
  int widgetId;
  private Dialog appNotRunDialog;
  
  void closeAppNotRunDialog() {
    appNotRunDialog = null; // destroy the dialog
    // end the program
    this.setResult(RESULT_CANCELED);
    this.finish();
  }
  
  void showAppNotRunDialog() {
    // only show the error dialog if one isn't already visible
    if (appNotRunDialog == null) {
      AlertDialog.Builder builder = new AlertDialog.Builder(this);
      builder.setMessage("Before using the widget, please first enable some categories by launching the main app.");
      builder.setCancelable(false);
      builder.setPositiveButton("Close", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int id) {
          closeAppNotRunDialog();
        }
      });
      appNotRunDialog = builder.create();
      appNotRunDialog.show();
    }
  }
  
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    super.onCreateOptionsMenu(menu);
    // inflate the menu
    getSupportMenuInflater().inflate(R.menu.category_chooser_menu, menu);
    return true; // we have made the menu so we can return true
  }
  
  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    if (item.getItemId() == R.id.categoryChooserMenuItemSave) {
      // store the selected category
      String chosenCategory = enabledCategoriesNames[listView.getCheckedItemPosition()];
      Editor editor = settings.edit();
      editor.putString(ReaderWidget.PREF_KEY_CATEGORY + widgetId, chosenCategory);
      editor.commit();
      
      // update the widget
      Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
      int[] widgetIds = { widgetId };
      intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, widgetIds);
      sendBroadcast(intent);
      
      // send a successful result
      Intent successResult = new Intent();
      successResult.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, widgetId);
      setResult(RESULT_OK, successResult);
      finish(); // end the activity and send the result
      
      return true;
    }
    else {
      return super.onOptionsItemSelected(item);
    }
  }
  
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    this.setContentView(R.layout.widget_config);
    widgetId = getIntent().getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID);
    
    // if the activity is cancelled
    Intent cancelResult = new Intent();
    cancelResult.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, widgetId);
    setResult(RESULT_CANCELED, cancelResult);
    
    // connect to the database and retrieve the enabled categories
    DatabaseHandler database = new DatabaseHandler(this);
    String[][] enabledCategories = database.getEnabledCategories();
    // if no categories were enabled, do not allow the user to proceed
    if (enabledCategories == null || enabledCategories[0].length == 0) {
      showAppNotRunDialog();
      return; // bail here
    }
    
    enabledCategoriesNames = enabledCategories[1];
    
    // set up the list view
    listView = (ListView) this.findViewById(R.id.widgetCategoryChoiceListView);
    listView.setAdapter(new ArrayAdapter<String>(this, R.layout.category_chooser_selectable_item, enabledCategoriesNames));
    listView.setChoiceMode(AbsListView.CHOICE_MODE_SINGLE);
    
    // find the id of the current item and enable it
    settings = getSharedPreferences(ReaderActivity.PREFS_FILE_NAME, MODE_PRIVATE);
    String enabledCategory = settings.getString(ReaderWidget.PREF_KEY_CATEGORY + widgetId, ReaderWidget.DEFAULT_CATEGORY);
    int enabledCategoryId = 0;
    for (int i = 0; i < enabledCategoriesNames.length; i++) {
      if (enabledCategoriesNames[i].equals(enabledCategory)) {
        enabledCategoryId = i;
      }
    }
    listView.setItemChecked(enabledCategoryId, true);
  }
}

Java Source Code List

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