Android Open Source - Absolute-Android-RSS A A Settings

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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.Dialog;
import android.app.ListActivity;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.graphics.Color;
import android.graphics.Typeface;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.SeekBar.OnSeekBarChangeListener;

import com.AA.R;
import com.AA.Other.ColorPickerDialog;
import com.AA.Other.DisplayTypes;

/***
 * This activity starts when the user presses "Settings" in the 
 * Context Menu  of the main app
 * 
 * Has Refresh options and color options for our article boxes
 */
public class AASettings extends ListActivity implements ColorPickerDialog.OnColorChangedListener {

  SharedPreferences settings;
  private String currentKey = "";

  //***GUI Member Variables(There will probably be a lot)***
  SeekBar sb_freq;
  TextView tv_freq;

  ColorAdapter adapter;
  //***End GUI Member Variables***

  /***
   * Called when the activity is created and put into memory.
   * 
   * This is where all GUI elements should be set up and any
   * other member variables that is used throughout the class
   */
  @Override public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.settings_main);

    //Sets custom font for app title.
    TextView tv=(TextView)findViewById(R.id.AATitle);
    Typeface face=Typeface.createFromAsset(getAssets(), "fonts/WREXHAM_.TTF");
    tv.setTypeface(face);

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

    adapter = new ColorAdapter(this);
    this.setListAdapter(adapter);

    //Sets the click listener so that we can do things when user selects an
      //option
    ListView lv = getListView();
    lv.setOnItemClickListener(new OnItemClickListener() {
      public void onItemClick(AdapterView<?> parent, View view,
          int position, long id) {
        showDialog(position);
      }
    });

    //Set up the functionality for the slider bar
    sb_freq = (SeekBar)this.findViewById(R.id.sb_freq);
    tv_freq = (TextView)this.findViewById(R.id.tv_freq);

    sb_freq.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {      
      @Override public void onStopTrackingTouch(SeekBar seekBar) {}
      @Override public void onStartTrackingTouch(SeekBar seekBar) {}

      @Override public void onProgressChanged(SeekBar seekBar, int progress,
          boolean fromUser) {
        tv_freq.setText((progress + 1) + " hour(s)");
      }
    });

    sb_freq.setProgress((int)settings.getLong("freq", 2)-1);
  }

  /***
   * Stores the currently selected frequency when user leaves the activity
   */
  @Override protected void onPause() {
    Editor edit = settings.edit();
    edit.putLong("freq", sb_freq.getProgress()+1);
    edit.commit();
    super.onPause();
  }

  /***
   * Gets the default color based on the position in the list
   * @param position
   * @return
   */
  private int getDefaultColor(int position) {
    if(position == 0 || position ==3)
      return Color.WHITE;  

    return Color.BLACK;  
  }

  /***
   * Handles the deprecated version of onCreate for pre-2.2 versions of Android.
   *
   * Simply returns the dialog that onCreateDialog(int,Bundle) would give with a 
   * default Bundle.
   */
  @Override protected Dialog onCreateDialog(int id) {
    return onCreateDialog(id, new Bundle());
  }

  /**
   * Creates a color chooser dialog based on the DisplayType that was selected
   */
  @Override public Dialog onCreateDialog(int id, Bundle args) {
    DisplayTypes[] types = DisplayTypes.values();
    int color = settings.getInt(types[id].toString(),this.getDefaultColor(id));
    Dialog dialog = new ColorPickerDialog(this, this, color);
    return dialog;
  }

  /***
   * For 1.x devices. Launcher for 2.0 default calls
   */
  @Override protected void onPrepareDialog(int id, Dialog dialog) {
    onPrepareDialog(id,dialog,new Bundle());
  }

  /***
   * Grabs the current key for the dialog that we are launching(so that we can
   * save the data) and stores it.
   */
  @Override protected void onPrepareDialog(int id, Dialog dialog, Bundle args) {
    DisplayTypes[] types = DisplayTypes.values();
    currentKey = types[id].toString();
  }

  /***
   * Saves the selected color into our settings preferences
   */
  @Override public void colorChanged(int color) {
    Editor edit = settings.edit();
    edit.putInt(currentKey, color);
    edit.commit();
    
    adapter.notifyDataSetChanged();
  }

  /***
   * Adapter that loads up our color options
   */
  private class ColorAdapter extends ArrayAdapter < String > {
    /***
     * Sets up our adapter
     * 
     * @param context - Context that we will be working with
     */
    public ColorAdapter(Context context) {
      super(context, R.layout.settings_main, R.id.tv_colorType);

      //Creates a list of items we want to show up in the list
      this.add("Unread Article Background");
      this.add("Read Article Background");
      this.add("Unread Article Text Color");
      this.add("Read Article Text Color");
    }

    /***
     * Creates and returns the current view in the list
     */
    @Override public View getView(int position, View convertView, ViewGroup parent) {
      //Creates a layout inflater and our settings provider
      LayoutInflater inflater =
        AASettings.this.getLayoutInflater();
      SharedPreferences settings = AASettings.this.settings;

      View row;

      //Parses the layout we want into a View, so that we can access each
      //individual piece if we haven't already(in which we just use convertView)
      if (convertView == null)
        row = inflater.inflate(R.layout.color_row, null);
      else
        row = convertView;

      //Gets the GUI items
      TextView tv_colorType = (TextView)row.findViewById(R.id.tv_colorType);
      ImageView iv_colorDisplay = (ImageView)row.findViewById(R.id.iv_colorDiplay);

      //Gets our enum values so that we have instant access to the settings names
      DisplayTypes[] displayTypes = DisplayTypes.values();
      
      ColorDrawable color = new ColorDrawable(settings.getInt(displayTypes[position].toString(), 
          getDefaultColor(position)));
      iv_colorDisplay.setBackgroundResource(R.drawable.topbar);
      iv_colorDisplay.setImageDrawable(color);

      tv_colorType.setText(this.getItem(position));

      return row;
    }    
  }
}

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