Android Open Source - alogger 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

/* The following code was written by Matthew Wiggins 
 * and is released under the APACHE 2.0 license 
 * //w  w  w . ja  v a 2 s .  co  m
 * http://www.apache.org/licenses/LICENSE-2.0
 */
package com.jug6ernaut.android.utilites;

import android.content.Context;
import android.graphics.Color;
import android.preference.DialogPreference;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.SeekBar;
import android.widget.TextView;


public class SeekBarPreference extends DialogPreference implements SeekBar.OnSeekBarChangeListener
{
  private static final String androidns="http://schemas.android.com/apk/res/android";

private SeekBar mSeekBar;
private TextView mSplashText;

private TextView mValueText;
private Context mContext;
private String mDialogMessage;
private String mSuffix;
private int mDefault=0;
private int mMax;
private int mValue = 0;

private int mTextColor = Color.BLACK;

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

    if(attrs!=null){
      mDialogMessage = attrs.getAttributeValue(androidns,"dialogMessage");
      mSuffix = attrs.getAttributeValue(androidns,"text");
      mDefault = attrs.getAttributeIntValue(androidns,"defaultValue", 0);
      mMax = attrs.getAttributeIntValue(androidns,"max", 100);
    }
  }
  @Override 
  protected View onCreateDialogView() {
    LinearLayout.LayoutParams params;
    LinearLayout layout = new LinearLayout(mContext);
    layout.setOrientation(LinearLayout.VERTICAL);
    layout.setPadding(6,6,6,6);

    mSplashText = new TextView(mContext);
    mSplashText.setTextColor(mTextColor);
    if (mDialogMessage != null)
      mSplashText.setText(mDialogMessage);
    layout.addView(mSplashText);

    mValueText = new TextView(mContext);
    mValueText.setGravity(Gravity.CENTER_HORIZONTAL);
    mValueText.setTextSize(32);
    mValueText.setTextColor(mTextColor);
    params = new LinearLayout.LayoutParams(
        LinearLayout.LayoutParams.FILL_PARENT, 
        LinearLayout.LayoutParams.WRAP_CONTENT);

    layout.addView(mValueText, params);

    mSeekBar = new SeekBar(mContext);
    mSeekBar.setOnSeekBarChangeListener(this);
    layout.addView(mSeekBar, new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT));

    if (shouldPersist())
      mValue = getPersistedInt(mDefault);

    mSeekBar.setMax(mMax);
    mSeekBar.setProgress(mValue);
    return layout;
  }
  @Override 
  protected void onBindDialogView(View v) {
    super.onBindDialogView(v);
    mSeekBar.setMax(mMax);
    mSeekBar.setProgress(mValue);
  }
  @Override
  protected void onSetInitialValue(boolean restore, Object defaultValue)  
  {
    super.onSetInitialValue(restore, defaultValue);
    if (restore) 
      mValue = shouldPersist() ? getPersistedInt(mDefault) : 0;
    else 
      mValue = (Integer)defaultValue;
  }

  public void onProgressChanged(SeekBar seek, int value, boolean fromTouch)
  {
    String t = String.valueOf(value);
    mValueText.setText(mSuffix == null ? t : t.concat(mSuffix));
    
    if (shouldPersist())
      persistInt(value);
    callChangeListener(Integer.valueOf(value));
  }
  public void onStartTrackingTouch(SeekBar seek) {}
  public void onStopTrackingTouch(SeekBar seek) {}

  public void setMax(int max) { mMax = max; }
  public int getMax() { return mMax; }
  
  @Override
  public void setDefaultValue(Object defaultValue)
  {mDefault = (Integer) defaultValue; };

  public void setProgress(int progress) { 
    mValue = progress;
    if (mSeekBar != null)
      mSeekBar.setProgress(progress); 
  }
  public int getProgress() { return mValue; }
  public void setText(String s){mSuffix=s;}
  public void setTextColor(int color){
    if(mSplashText!=null)mSplashText.setTextColor(color);
    if(mValueText!=null)mValueText.setText(color);
    
    mTextColor = color;
  }
}
Java Source Code List
