Android Open Source - android-holo-colors-sample Switch Preference

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License

The source code is released under:

Apache License

Java Source Code

/*
 * This source is part of the//from w  w  w .  j  a va 2s  .  c o m
 *      _____  ___   ____
 *  __ / / _ \/ _ | / __/___  _______ _
 * / // / , _/ __ |/ _/_/ _ \/ __/ _ `/
 * \___/_/|_/_/ |_/_/ (_)___/_/  \_, /
 *                              /___/
 * repository.
 *
 * Copyright (C) 2012 Benoit 'BoD' Lubek (BoD@JRAF.org)
 * Copyright (C) 2012 Intrications (intrications.com)
 * Copyright (C) 2010 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.jraf.android.backport.switchwidget;

import android.content.Context;
import android.content.res.TypedArray;
import android.preference.Preference;
import android.util.AttributeSet;
import android.view.View;
import android.widget.Checkable;
import android.widget.CompoundButton;

/**
 * A {@link Preference} that provides a two-state toggleable option.
 * <p>
 * This preference will store a boolean into the SharedPreferences.
 * 
 * @attr ref android.R.styleable#SwitchPreference_summaryOff
 * @attr ref android.R.styleable#SwitchPreference_summaryOn
 * @attr ref android.R.styleable#SwitchPreference_switchTextOff
 * @attr ref android.R.styleable#SwitchPreference_switchTextOn
 * @attr ref android.R.styleable#SwitchPreference_disableDependentsState
 */
public class SwitchPreference extends TwoStatePreference {
  // Switch text for on and off states
  private CharSequence mSwitchOn;
  private CharSequence mSwitchOff;
  private final Listener mListener = new Listener();

  private class Listener implements CompoundButton.OnCheckedChangeListener {
    @Override
    public void onCheckedChanged(CompoundButton buttonView,
        boolean isChecked) {
      if (!callChangeListener(isChecked)) {
        // Listener didn't like it, change it back.
        // CompoundButton will make sure we don't recurse.
        buttonView.setChecked(!isChecked);
        return;
      }

      SwitchPreference.this.setChecked(isChecked);
    }
  }

  /**
   * Construct a new SwitchPreference with the given style options.
   * 
   * @param context
   *            The Context that will style this preference
   * @param attrs
   *            Style attributes that differ from the default
   * @param defStyle
   *            Theme attribute defining the default style options
   */
  public SwitchPreference(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);

    TypedArray a = context.obtainStyledAttributes(attrs,
        R.styleable.SwitchPreference, R.attr.switchPreferenceStyle, 0);
    setSummaryOn(a.getString(R.styleable.SwitchPreference_summaryOn));
    setSummaryOff(a.getString(R.styleable.SwitchPreference_summaryOff));
    setSwitchTextOn(a.getString(R.styleable.SwitchPreference_switchTextOn));
    setSwitchTextOff(a
        .getString(R.styleable.SwitchPreference_switchTextOff));
    setDisableDependentsState(a.getBoolean(
        R.styleable.SwitchPreference_disableDependentsState, false));
    a.recycle();
  }

  /**
   * Construct a new SwitchPreference with the given style options.
   * 
   * @param context
   *            The Context that will style this preference
   * @param attrs
   *            Style attributes that differ from the default
   */
  public SwitchPreference(Context context, AttributeSet attrs) {
    this(context, attrs, R.attr.switchPreferenceStyle);
  }

  /**
   * Construct a new SwitchPreference with default style options.
   * 
   * @param context
   *            The Context that will style this preference
   */
  public SwitchPreference(Context context) {
    super(context);
  }

  @Override
  protected void onBindView(View view) {
    super.onBindView(view);

    Switch checkableView = (Switch) view.findViewById(R.id.switchWidget);
    if (checkableView != null /* && checkableView instanceof Checkable */) {
      ((Checkable) checkableView).setChecked(mChecked);

      // XXX Was on the Android source, but had to comment it out. --
      // Intrications
      // sendAccessibilityEvent(checkableView);

      // if (checkableView instanceof Switch) {
        final Switch switchView =/* (Switch) */ checkableView;
        switchView.setTextOn(mSwitchOn);
        switchView.setTextOff(mSwitchOff);
        switchView.setOnCheckedChangeListener(mListener);
      // }
    }

    syncSummaryView(view);
  }

  /**
   * Set the text displayed on the switch widget in the on state. This should
   * be a very short string; one word if possible.
   * 
   * @param onText
   *            Text to display in the on state
   */
  public void setSwitchTextOn(CharSequence onText) {
    mSwitchOn = onText;
    notifyChanged();
  }

  /**
   * Set the text displayed on the switch widget in the off state. This should
   * be a very short string; one word if possible.
   * 
   * @param offText
   *            Text to display in the off state
   */
  public void setSwitchTextOff(CharSequence offText) {
    mSwitchOff = offText;
    notifyChanged();
  }

  /**
   * Set the text displayed on the switch widget in the on state. This should
   * be a very short string; one word if possible.
   * 
   * @param resId
   *            The text as a string resource ID
   */
  public void setSwitchTextOn(int resId) {
    setSwitchTextOn(getContext().getString(resId));
  }

  /**
   * Set the text displayed on the switch widget in the off state. This should
   * be a very short string; one word if possible.
   * 
   * @param resId
   *            The text as a string resource ID
   */
  public void setSwitchTextOff(int resId) {
    setSwitchTextOff(getContext().getString(resId));
  }

  /**
   * @return The text that will be displayed on the switch widget in the on
   *         state
   */
  public CharSequence getSwitchTextOn() {
    return mSwitchOn;
  }

  /**
   * @return The text that will be displayed on the switch widget in the off
   *         state
   */
  public CharSequence getSwitchTextOff() {
    return mSwitchOff;
  }
}

Java Source Code List

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