Android Open Source - Gloomy-Dungeons-3D Seek Bar Preference

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License

The source code is released under:

MIT License

Java Source Code

/*
 * The following code was written by Matthew Wiggins
 * and is released under the APACHE 2.0 license
 */*from   w  w  w.j  a  va  2s .c  o m*/
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * http://android.hlidskialf.com/blog/code/android-seekbar-preference
 * http://www.bryandenny.com/index.php/2010/05/25/what-i-learned-from-writing-my-first-android-application/
 *
 * Modified by restorer (added/fixed min parameter, fixed "Cancel" behaviour)
 *
 */

package zame.libs;

import android.content.Context;
import android.content.res.TypedArray;
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;
import zame.game.R;

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

  private Context mContext;
  private SeekBar mSeekBar;
  private TextView mSplashText;
  private TextView mValueText;

  private String mDialogMessage;
  private int mMin;
  private int mMax;
  private int mValue = 0;
  private String mSummary = "%s/%s";

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

    mDialogMessage = attrs.getAttributeValue(androidns, "dialogMessage");

    TypedArray app = context.obtainStyledAttributes(attrs, R.styleable.SeekBarPreference);
    mMin = app.getInt(R.styleable.SeekBarPreference_min, 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(10, 10, 10, 10);

    mSplashText = new TextView(mContext);

    if (mDialogMessage != null) {
      mSplashText.setText(mDialogMessage);
    }

    layout.addView(mSplashText);

    mValueText = new TextView(mContext);
    mValueText.setGravity(Gravity.CENTER_HORIZONTAL);
    mValueText.setTextSize(32);

    params = new LinearLayout.LayoutParams(
      LinearLayout.LayoutParams.MATCH_PARENT,
      LinearLayout.LayoutParams.WRAP_CONTENT
    );

    layout.addView(mValueText, params);

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

    mSeekBar.setMax(mMax - mMin);
    mSeekBar.setProgress(mValue - mMin);
    mValueText.setText(String.valueOf(mValue));

    return layout;
  }

  @Override
  protected void onBindDialogView(View v)
  {
    super.onBindDialogView(v);
    mSeekBar.setMax(mMax - mMin);
    mSeekBar.setProgress(mValue - mMin);
  }

  @Override
  protected Object onGetDefaultValue(TypedArray a, int index)
  {
    return a.getInteger(index, 0);
  }

  @Override
  protected void onSetInitialValue(boolean restore, Object defaultValue)
  {
    super.onSetInitialValue(restore, defaultValue);

    mValue = (restore ? getPersistedInt(mValue) : ((defaultValue == null) ? mValue : (Integer)defaultValue));

    if (!restore && shouldPersist()) {
      persistInt(mValue);
    }

    setSummary(String.format(mSummary, String.valueOf(mValue), String.valueOf(mMax)));
  }

  public void onProgressChanged(SeekBar seek, int value, boolean fromTouch)
  {
    value += mMin;

    mValueText.setText(String.valueOf(value));
    callChangeListener(new Integer(value));
  }

  @Override
  protected void onDialogClosed(boolean positiveResult)
  {
    if (positiveResult && (mSeekBar != null))
    {
      mValue = mSeekBar.getProgress() + mMin;
      setSummary(String.format(mSummary, String.valueOf(mValue), String.valueOf(mMax)));

      if (shouldPersist()) {
        persistInt(mValue);
      }
    }
  }

  public void onStartTrackingTouch(SeekBar seek) {}
  public void onStopTrackingTouch(SeekBar seek) {}

  public void setMin(int min)
  {
    mMin = min;
  }

  public int getMin()
  {
    return mMin;
  }

  public void setMax(int max)
  {
    mMax = max;
  }

  public int getMax()
  {
    return mMax;
  }

  public void setProgress(int progress)
  {
    mValue = progress;

    if (mSeekBar != null) {
      mSeekBar.setProgress(progress - mMin);
    }
  }

  public int getProgress()
  {
    return mValue;
  }
}

Java Source Code List

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