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- /*
- * Copyright 2012 Jay Weisskopf
- *
- * Licensed under the MIT License (see LICENSE.txt)
- */
- package net.jayschwa.android.preference;
- import android.content.Context;
- import android.content.res.TypedArray;
- import android.preference.DialogPreference;
- import android.util.AttributeSet;
- import android.util.Log;
- import android.view.View;
- import android.widget.SeekBar;
- import android.widget.TextView;
- import java.math.BigDecimal;
- /**
- * @author Jay Weisskopf
- */
- public class SliderPreference extends DialogPreference {
- private static final String TAG = "SliderPreference";
- protected float mValue, mValueOriginal, mMin, mMax, mResolution, mScale;
- protected String mFormat;
- public SliderPreference(Context context, AttributeSet attrs) {
- super(context, attrs);
- setup(context, attrs);
- }
- public SliderPreference(Context context, AttributeSet attrs, int defStyle) {
- super(context, attrs, defStyle);
- setup(context, attrs);
- }
- private void setup(Context context, AttributeSet attrs) {
- setPersistent(true);
- // shouldPersist();
- //if( getPersistedFloat( -42f ) == -42f ) {
- // persistFloat( 0f );
- //}
- setDialogLayoutResource(R.layout.slider_preference_dialog);
- TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.SliderPreference);
- try {
- mValueOriginal = mValue = 0;
- mMin = 0;
- mMax = 100;
- mResolution = 0.1f;
- mScale = 1;
- mFormat = "%.2f";
- //setSummary(a.getTextArray(R.styleable.SliderPreference_android_summary));
- // a.get
- mFormat = a.getString(R.styleable.SliderPreference_format);
- mMin = a.getFloat(R.styleable.SliderPreference_minn, 0);
- mMax = a.getFloat(R.styleable.SliderPreference_android_max, 100);
- mResolution = a.getFloat(R.styleable.SliderPreference_resolution, 1);
- mScale = a.getFloat(R.styleable.SliderPreference_scales, 1);
- } catch (Exception e) {
- Log.e("SliderPreference", "Error in attributes");
- }
- a.recycle();
- }
- // TODO implement :
- // valueStorageToDialog
- // valueDialogToStorage
- // valueFormat ( currency symbol, precision etc )
- protected String valueFormat( float value ) {
- if( mFormat != null )
- return String.format(mFormat, value);
- else
- return "" + value;
- }
- @Override
- protected Object onGetDefaultValue(TypedArray a, int index) {
- return a.getFloat(index, 0);
- }
- @Override
- protected void onSetInitialValue(boolean restoreValue, Object defaultValue) {
- try {
- mValueOriginal = mValue = restoreValue ? getPersistedFloat( 0 ) / mScale : (float) defaultValue / mScale;
- persistFloat( mValue * mScale );
- }
- catch( Exception e ) {
- Log.e( TAG, "Types do not match:" + this.getKey() );
- }
- }
- @Override
- public CharSequence getSummary() {
- try {
- return String.format( super.getSummary().toString(), valueFormat( mValue /* mScale */ ) );
- }
- catch( Exception e ) {
- Log.e( TAG, "getSummary error, format: '" + this.getKey() + "'" );
- }
- return "";
- }
- protected float getValueFromSeekbar( int progress ) {
- return mMin + progress * mResolution;
- }
- @Override
- protected View onCreateDialogView() {
- // mSeekBarValue = (int) (mValue * SEEKBAR_RESOLUTION);
- final View view = super.onCreateDialogView();
- SeekBar seekbar = (SeekBar) view.findViewById(R.id.slider_preference_seekbar);
- seekbar.setMax( (int) ( ( mMax - mMin ) / mResolution ) );
- mValue = Math.min( mValue, mMax);
- mValue = Math.max( mValue, mMin );
- seekbar.setProgress( (int) ( ( mValue - mMin ) / mResolution ) );
- TextView min, max;
- min = (TextView) view.findViewById( R.id.min );
- max = (TextView) view.findViewById( R.id.max );
- min.setText( valueFormat( mMin ) );
- max.setText( valueFormat( mMax ) );
- TextView value = (TextView) view.findViewById( R.id.value );
- value.setText( valueFormat( mValue ) );
- seekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
- @Override
- public void onStopTrackingTouch(SeekBar seekBar) {
- }
- @Override
- public void onStartTrackingTouch(SeekBar seekBar) {
- }
- @Override
- public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
- if (fromUser) {
- mValue = getValueFromSeekbar( progress );
- TextView value = (TextView) view.findViewById( R.id.value );
- value.setText( valueFormat( mValue ) );
- }
- }
- });
- return view;
- }
- @Override
- protected void onDialogClosed(boolean positiveResult) {
- if ( positiveResult && callChangeListener( mValue * mScale ) ) {
- if( shouldPersist() ) {
- try {
- persistFloat( mValue * mScale );
- }
- catch( ClassCastException e ) {
- getEditor().remove(getKey());
- getEditor().putFloat(getKey(), mValue * mScale);
- getEditor().commit();
- //persistFloat(mValue * mScale);
- }
- }
- if ( mValueOriginal != mValue ) {
- notifyChanged();
- mValueOriginal = mValue;
- }
- }
- super.onDialogClosed(positiveResult);
- }
- }
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