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      1 /*
      2  * Copyright (C) 2007 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.preference;
     18 
     19 import android.content.Context;
     20 import android.content.res.TypedArray;
     21 import android.util.AttributeSet;
     22 import android.view.View;
     23 import android.widget.Checkable;
     24 
     25 /**
     26  * A {@link Preference} that provides checkbox widget
     27  * functionality.
     28  * <p>
     29  * This preference will store a boolean into the SharedPreferences.
     30  *
     31  * @attr ref android.R.styleable#CheckBoxPreference_summaryOff
     32  * @attr ref android.R.styleable#CheckBoxPreference_summaryOn
     33  * @attr ref android.R.styleable#CheckBoxPreference_disableDependentsState
     34  */
     35 public class CheckBoxPreference extends TwoStatePreference {
     36 
     37     public CheckBoxPreference(Context context, AttributeSet attrs, int defStyle) {
     38         super(context, attrs, defStyle);
     39 
     40         TypedArray a = context.obtainStyledAttributes(attrs,
     41                 com.android.internal.R.styleable.CheckBoxPreference, defStyle, 0);
     42         setSummaryOn(a.getString(com.android.internal.R.styleable.CheckBoxPreference_summaryOn));
     43         setSummaryOff(a.getString(com.android.internal.R.styleable.CheckBoxPreference_summaryOff));
     44         setDisableDependentsState(a.getBoolean(
     45                 com.android.internal.R.styleable.CheckBoxPreference_disableDependentsState, false));
     46         a.recycle();
     47     }
     48 
     49     public CheckBoxPreference(Context context, AttributeSet attrs) {
     50         this(context, attrs, com.android.internal.R.attr.checkBoxPreferenceStyle);
     51     }
     52 
     53     public CheckBoxPreference(Context context) {
     54         this(context, null);
     55     }
     56 
     57     @Override
     58     protected void onBindView(View view) {
     59         super.onBindView(view);
     60 
     61         View checkboxView = view.findViewById(com.android.internal.R.id.checkbox);
     62         if (checkboxView != null && checkboxView instanceof Checkable) {
     63             ((Checkable) checkboxView).setChecked(mChecked);
     64             sendAccessibilityEvent(checkboxView);
     65         }
     66 
     67         syncSummaryView(view);
     68     }
     69 }
     70