Android Open Source - MorseStraightKey-Android Seek Bar Preference

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From Project

Back to project page MorseStraightKey-Android.

License

The source code is released under:

GNU General Public License

Java Source Code

package com.savanto.morsekeyboard;
//from   w  ww  .j a v a  2  s.  c o m

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

public class SeekBarPreference extends DialogPreference
{
  private SeekBar mSeekBar;
  private TextView mValueTextView;

  private Context mContext;

  private String mLabel = "";
  private String mUnits = "";

  private int mMaxValue, mMinValue, mDefaultValue;
  private int mProgressValue = 0;

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

    // Get StyleAttributes properly.
    TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.SeekBarPreference);

    // Get SeekBar min/max/default values.
    this.mMinValue = ta.getInt(R.styleable.SeekBarPreference_minValue, 0);
    this.mMaxValue = ta.getInt(R.styleable.SeekBarPreference_maxValue, 100);
    this.mDefaultValue = ta.getInt(R.styleable.SeekBarPreference_android_defaultValue, this.mMinValue);

    // Get the Dialog and SeekBar labels text.    
    this.mLabel = ta.getString(R.styleable.SeekBarPreference_android_dialogMessage); 
    this.mUnits = ta.getString(R.styleable.SeekBarPreference_units);

    // Destroy the TypedArray
    ta.recycle();
  }

  @Override
  protected View onCreateDialogView()
  {
    // Get the current value from saved preferences.
    this.mProgressValue = (int) this.getPersistedLong(this.mDefaultValue);

    // Inflate layout
    LayoutInflater inflater = (LayoutInflater) this.mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View view = inflater.inflate(R.layout.seek_bar_preference, null);

    // Setup the info message.
    ((TextView) view.findViewById(R.id.seek_bar_info)).setText(this.mLabel);

    // Setup the SeekBar min/max labels.
    ((TextView) view.findViewById(R.id.seek_bar_min)).setText(Integer.toString(this.mMinValue));
    ((TextView) view.findViewById(R.id.seek_bar_max)).setText(Integer.toString(this.mMaxValue));

    // Setup the SeekBar.
    this.mSeekBar = (SeekBar) view.findViewById(R.id.seek_bar);
    this.mSeekBar.setMax(this.mMaxValue - this.mMinValue);
    this.mSeekBar.setProgress(this.mProgressValue - this.mMinValue);
    mSeekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener()
    {
      @Override
      public void onProgressChanged(SeekBar seekBar, int value, boolean fromTouch)
      {
        SeekBarPreference.this.mProgressValue = value + SeekBarPreference.this.mMinValue;
        SeekBarPreference.this.mValueTextView.setText(
            Integer.toString(SeekBarPreference.this.mProgressValue)
            + SeekBarPreference.this.mUnits);
      }

      @Override
      public void onStartTrackingTouch(SeekBar seekBar)
      {
      }

      @Override
      public void onStopTrackingTouch(SeekBar seekBar)
      {
      }
    });

    // Setup SeekBar current value label.
    this.mValueTextView = (TextView) view.findViewById(R.id.seek_bar_value);
    this.mValueTextView.setText(Integer.toString(SeekBarPreference.this.mProgressValue)
        + SeekBarPreference.this.mUnits);

    return view;
  }

  @Override
  protected void onDialogClosed(boolean positiveResult)
  {
    super.onDialogClosed(positiveResult);
    if (positiveResult)
    {
      if (this.shouldPersist())
        this.persistLong(this.mProgressValue);
      this.notifyChanged();
    }
  }

  public String getUnits()
  {
    return this.mUnits;
  }

  public int getProgress()
  {
    return this.mProgressValue;
  }

  public int getDefaultValue()
  {
    return this.mDefaultValue;
  }
}

Java Source Code List

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