/* The following code was written by Matthew Wiggins
* and is released under the APACHE 2.0 license
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Improvements :
* - save the value on positive button click, not on seekbar change
* - handle @string/... values in xml file
*/
package dudeofawesome.cardboardhome;
import android.app.AlertDialog;
import android.content.Context;
import android.os.Bundle;
import android.preference.DialogPreference;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.SeekBar;
import android.widget.TextView;
public class SeekBarPreference extends DialogPreference implements SeekBar.OnSeekBarChangeListener, OnClickListener
{
// ------------------------------------------------------------------------------------------
// Private attributes :
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 int mDefault, mMax, mValue = 0;
// ------------------------------------------------------------------------------------------
// ------------------------------------------------------------------------------------------
// Constructor :
public SeekBarPreference(Context context, AttributeSet attrs) {
super(context,attrs);
mContext = context;
// Get string value for dialogMessage :
int mDialogMessageId = attrs.getAttributeResourceValue(androidns, "dialogMessage", 0);
if(mDialogMessageId == 0) mDialogMessage = attrs.getAttributeValue(androidns, "dialogMessage");
else mDialogMessage = mContext.getString(mDialogMessageId);
// Get string value for suffix (text attribute in xml file) :
int mSuffixId = attrs.getAttributeResourceValue(androidns, "text", 0);
if(mSuffixId == 0) mSuffix = attrs.getAttributeValue(androidns, "text");
else mSuffix = mContext.getString(mSuffixId);
// Get default and max seekbar values :
mDefault = attrs.getAttributeIntValue(androidns, "defaultValue", 0);
mMax = attrs.getAttributeIntValue(androidns, "max", 100);
}
// ------------------------------------------------------------------------------------------
// ------------------------------------------------------------------------------------------
// DialogPreference methods :
@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.setPadding(30, 10, 30, 10);
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 = 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;
}
// ------------------------------------------------------------------------------------------
// ------------------------------------------------------------------------------------------
// OnSeekBarChangeListener methods :
@Override
public void onProgressChanged(SeekBar seek, int value, boolean fromTouch)
{
String t = String.valueOf(value);
mValueText.setText(mSuffix == null ? t : t.concat(" " + mSuffix));
}
@Override
public void onStartTrackingTouch(SeekBar seek) {}
@Override
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; }
// ------------------------------------------------------------------------------------------
// ------------------------------------------------------------------------------------------
// Set the positive button listener and onClick action :
@Override
public void showDialog(Bundle state) {
super.showDialog(state);
Button positiveButton = ((AlertDialog) getDialog()).getButton(AlertDialog.BUTTON_POSITIVE);
positiveButton.setOnClickListener(this);
}
@Override
public void onClick(View v) {
if (shouldPersist()) {
mValue = mSeekBar.getProgress();
persistInt(mSeekBar.getProgress());
callChangeListener(Integer.valueOf(mSeekBar.getProgress()));
}
((AlertDialog) getDialog()).dismiss();
}
// ------------------------------------------------------------------------------------------
}