Android Open Source - FileRenamer Seek Bar Preference

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License

The source code is released under:

License text from http://www.opensource.org/licenses/GPL-3.0 Copyright (c) 2012 Thomas Schmid, Froburgstrasse 25, 4052 Basel, Schweiz Permission is hereby granted, free of charge, to any person obta...

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Java Source Code

/*
 * Copyright (C) 2012 Thomas Schmid <tschmid35@gmail.com>
 */*from w w w  . j a  v  a2  s . co m*/
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package com.scto.filerenamer;

import android.content.Context;
import android.content.res.TypedArray;
import android.preference.DialogPreference;
import android.util.AttributeSet;
import android.view.View;
import android.widget.SeekBar;
import android.widget.TextView;

public class SeekBarPreference extends DialogPreference implements SeekBar.OnSeekBarChangeListener
{
  private int mValue;
  private TextView mValueText;

  public SeekBarPreference( Context context, AttributeSet attrs )
  {
    super( context, attrs );
  }

  @Override
  public CharSequence getSummary()
  {
    return getSummary( mValue );
  }

  @Override
  protected Object onGetDefaultValue( TypedArray a, int index )
  {
    return a.getInt( index, 100 );
  }

  @Override
  protected void onSetInitialValue( boolean restoreValue, Object defaultValue )
  {
    mValue = restoreValue ? getPersistedInt( mValue ) : ( Integer )defaultValue;
    }

  private String getSummary( int value )
  {
    if( "shake_threshold".equals( getKey() ) )
    {
      return String.valueOf( value / 10.0f );
    }
    else
    {
      return String.format( "%d%% (%+.1fdB)", value, 20 * Math.log10( Math.pow( value / 100.0, 3 ) ) );
    }
  }

  @Override
  protected View onCreateDialogView()
  {
    View view = super.onCreateDialogView();

    mValueText = ( TextView )view.findViewById( R.id.value );
    mValueText.setText( getSummary( mValue ) );

    SeekBar seekBar = ( SeekBar )view.findViewById( R.id.time_bar );
    seekBar.setMax( 150 );
    seekBar.setProgress( mValue );
    seekBar.setOnSeekBarChangeListener( this );

    return view;
  }

  @Override
  protected void onDialogClosed( boolean positiveResult )
  {
    notifyChanged();
  }

  @Override
  public void onProgressChanged( SeekBar seekBar, int progress, boolean fromUser )
  {
    if( fromUser )
    {
      mValue = progress;
      mValueText.setText( getSummary( progress ) );
      persistInt( progress );
    }
  }

  @Override
  public void onStartTrackingTouch( SeekBar seekBar )
  {

  }

  @Override
  public void onStopTrackingTouch( SeekBar seekBar )
  {

  }
}

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