Android Open Source - interdroid-swan Seek Bar Preference

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License

The source code is released under:

Copyright (c) 2008-2011 Vrije Universiteit, The Netherlands All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the follo...

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 va2s  .  com*/
 * http://www.apache.org/licenses/LICENSE-2.0
 */
package interdroid.swan.util;

import android.content.Context;
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, mValueText;
  private Context mContext;

  private String mDialogMessage, mSuffix;
  private String mDefault;
  private int mMax, mValue = 0;

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

    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);
    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.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 = Integer.parseInt(getPersistedString(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() ? Integer
          .parseInt(getPersistedString(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())
      persistString("" + value);
    callChangeListener(t + mSuffix);
  }

  public void onStartTrackingTouch(SeekBar seek) {
  }

  public void onStopTrackingTouch(SeekBar seek) {
  }

  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);
  }

  public int getProgress() {
    return mValue;
  }
}

Java Source Code List

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