Android Open Source - Absolute-Android-RSS A A Widget

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License

The source code is released under:

Apache License

Java Source Code

/*Copyright 2010 University Of Utah Android Development Group
 *Licensed under the Apache License, Version 2.0 (the "License");
 *you may not use this file except in compliance with the License.
 *You may obtain a copy of the License at
 *// www .j a  v a 2 s  . c  o  m
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 *Unless required by applicable law or agreed to in writing, software
 *distributed under the License is distributed on an "AS IS" BASIS,
 *WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *See the License for the specific language governing permissions and
 *limitations under the License.
 */
package com.AA.Activities;

import android.app.Activity;
import android.appwidget.AppWidgetManager;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.view.Display;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.SeekBar.OnSeekBarChangeListener;

import com.AA.R;
import com.AA.Recievers.AAWidgetProvider;

/***
 * This class is the Widget Settings dialog that pops up when a user drops
 * one of our widgets down on to their homescreen
 */
public class AAWidget extends Activity {
  SharedPreferences settings;

  /*Variables for the GUI*/
  Button btn_ok;
  SeekBar sb_freq;
  TextView tv_freq;
  RadioGroup rg_layoutPicker;
  RadioButton rb_left;
  RadioButton rb_center;

  /***
   * Creates the activity; This themes up our activity to look like a dialog
   * Also registers some UI action listeners to the UI elements
   */
  @Override protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

        //Sets the content view, applies a title to the window, and background
    this.setContentView(R.layout.widget_settings);
    this.setTitle("Widget Settings");
        getWindow().setBackgroundDrawableResource(R.drawable.widget_dialog2);

        //Due to some weird changes that happen to the activity when a Bg image is applied;
        //this was required to make the window look like a dialog box again
        Display d = getWindow().getWindowManager().getDefaultDisplay();
        getWindow().setLayout(d.getWidth()*15/16, LayoutParams.WRAP_CONTENT);

        //Tells the system that if the user leaves this dialog without pressing OK, 
        //to consider it canceled
    this.setResult(RESULT_CANCELED);

    settings = this.getSharedPreferences("settings", 0);

    /**UI Junk**/
        btn_ok = (Button)this.findViewById(R.id.btn_ok);
        sb_freq = (SeekBar)this.findViewById(R.id.sb_freq);
        tv_freq = (TextView)this.findViewById(R.id.tv_freq);
        rg_layoutPicker = (RadioGroup)this.findViewById(R.id.rg_layoutPicker);
        rb_left = (RadioButton)this.findViewById(R.id.rb_left);
        rb_center = (RadioButton)this.findViewById(R.id.rb_center);
        /**End of UI Junk**/

        //Applies a listener to the OK button, so that we can handle a accept result
        btn_ok.setOnClickListener(new OnClickListener() {
      @Override public void onClick(View v) {
        acceptChanges();
      }
    });

        //Applies a listener to handle when the slider bar changes
        sb_freq.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
      @Override public void onStopTrackingTouch(SeekBar seekBar) {/**Unused method**/}
      @Override public void onStartTrackingTouch(SeekBar seekBar) {/**Unused method**/}

      /***
       * When the user changes the position of the slider bar; display 
       * the current progress in the textview below
       */
      @Override public void onProgressChanged(SeekBar seekBar,
          int progress, boolean fromUser) {
        tv_freq.setText((progress + 1) + " hour/s");
      }
    });

        //Sets the fequency progress bar to equal the users last progress setting
        //(or 2 if they haven't set it before)
        sb_freq.setProgress((int)settings.getLong("freq", 2)-1);
  }

  /***
   * Saves all the data that is gathered from the setting dialog
   */
  private void acceptChanges() {
    Bundle extras = getIntent().getExtras();
    int appWidgetId = 0;
    Editor edit = settings.edit();

    //If our bundle doesn't exist(for whatever reason); notify the user and exit
    if (extras == null) {
      Toast.makeText(this, "Uh oh. Something weird just happened\n" +
          "Try again", Toast.LENGTH_LONG).show();
      this.finish();
      return;
    }

    //Gets the widget id from the calling Intent
      appWidgetId = extras.getInt(
              AppWidgetManager.EXTRA_APPWIDGET_ID,
              AppWidgetManager.INVALID_APPWIDGET_ID);

      //If the center layout is checked than save the id(otherwise we default to the left-aligned layout)
    if(rb_center.isChecked())
      edit.putInt("" + appWidgetId, R.drawable.widget_layout_top_centered);

    //Add to the widget count and save the update frequency, and close the saves
    edit.putInt("widgetCount", settings.getInt("widgetCount", 0) + 1);
    edit.putLong("freq", sb_freq.getProgress()+1);
    edit.commit();

    //Prepare the activity for a successful close
    Intent resultValue = new Intent();
    resultValue.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
    setResult(RESULT_OK, resultValue);

    //Relaunch the service so that we can update the widget when it is applied to
    //the homescreen
    AAWidgetProvider.launchService(this);

    this.finish();
  }


}

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