Android Open Source - ParticlePlay Seek Bar Preference

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License

The source code is released under:
GNU General Public License
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Java Source Code

package com.droidinteractive.particleplay.preferences;
/*//  www.j  av a2s .  com
 * Copyright (c) 2010 Ragdoll Games
 * Copyright (c) 2010-2014 Droid Interactive
 * Copyright (c) 2010-2014 IDKJava Team
 * 
 * This file is part of Particle Play.
 * 
 * Particle Play is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * Particle Play is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with Particle Play. If not, see <http://www.gnu.org/licenses/>.
 */
import android.content.Context;
import android.content.SharedPreferences;
import android.content.res.TypedArray;
import android.graphics.Typeface;
import android.preference.Preference;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TextView;

public class SeekBarPreference extends Preference implements OnSeekBarChangeListener
{
  public static int MAXIMUM = 255;
  
  private float oldValue = 0;
  private TextView monitorBox;
  
  public SeekBarPreference(Context context)
  {
    super(context);
  }
  public SeekBarPreference(Context context, AttributeSet attrs)
  {
    super(context, attrs);
  }
  public SeekBarPreference(Context context, AttributeSet attrs, int defStyle)
  {
    super(context, attrs, defStyle);
  }
  
  @Override
  protected View onCreateView(ViewGroup parent)
  {
    LinearLayout layout = new LinearLayout(getContext());
    
    LinearLayout.LayoutParams params1 = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
    params1.gravity = Gravity.LEFT;
    params1.weight = 1.0f;
    
    LinearLayout.LayoutParams params2 = new LinearLayout.LayoutParams(200, LinearLayout.LayoutParams.WRAP_CONTENT);
    params2.gravity = Gravity.RIGHT;
    
    LinearLayout.LayoutParams params3 = new LinearLayout.LayoutParams(50, LinearLayout.LayoutParams.WRAP_CONTENT);
    params3.gravity = Gravity.CENTER;
    
    
    layout.setPadding(15, 15, 10, 15);
    layout.setOrientation(LinearLayout.HORIZONTAL);
    
    TextView view = new TextView(getContext());
    view.setText(getTitle());
    view.setTextSize(24);
    view.setTypeface(Typeface.SANS_SERIF, Typeface.NORMAL);
    view.setGravity(Gravity.LEFT);
    view.setLayoutParams(params1);
    
    
    SeekBar bar = new SeekBar(getContext());
    bar.setMax(MAXIMUM);
    bar.setProgress((int)oldValue);
    bar.setLayoutParams(params2);
    bar.setOnSeekBarChangeListener(this);
    
    monitorBox = new TextView(getContext());
    monitorBox.setTextSize(12);
    monitorBox.setTypeface(Typeface.MONOSPACE, Typeface.NORMAL);
    monitorBox.setLayoutParams(params3);
    monitorBox.setPadding(5, 5, 0, 0);
    monitorBox.setText(bar.getProgress()+"");
    
    
    layout.addView(view);
    layout.addView(bar);
    layout.addView(monitorBox);
    layout.setId(android.R.id.widget_frame);
    
    
    return layout;
  }
  
  @Override
  public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
  {
    //Log.v("Particle Play", "onProgressChanged(): " + progress);
      oldValue = progress;
      monitorBox.setText(progress+"");
  }

  @Override
  public void onStartTrackingTouch(SeekBar seekBar)
  {
    //Log.v("Particle Play", "onStartTrackingTouch()");
  }

  @Override
  public void onStopTrackingTouch(SeekBar seekBar)
  {
    //Log.v("Particle Play", "onStopTrackingTouch()");

      updatePreference((int) oldValue);
    
      notifyChanged();
  }
   
   
  @Override 
  protected Object onGetDefaultValue(TypedArray ta, int index)
  {
     int dValue = (int)ta.getInt(index, 50);
     return validateValue(dValue);
  }
   

  @Override
  protected void onSetInitialValue(boolean restoreValue, Object defaultValue)
  {
    int temp = restoreValue ? getPersistedInt(50) : (Integer)defaultValue;
       
    if(!restoreValue)
      persistInt(temp);
       
      oldValue = temp;
  }
   
   
  private int validateValue(int value)
  {
    if(value > MAXIMUM)
    {
      value = MAXIMUM;
    }
      else if(value < 0)
      {
        value = 0;
      }
    
    return value;  
  }
      
      
  private void updatePreference(int newValue)
  {
     SharedPreferences.Editor editor =  getEditor();
     editor.putInt(getKey(), newValue);
     editor.commit();
  }
}
Java Source Code List
