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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 defStyleAttr) {
     38         this(context, attrs, defStyleAttr, 0);
     39     }
     40 
     41     public CheckBoxPreference(
     42             Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
     43         super(context, attrs, defStyleAttr, defStyleRes);
     44 
     45         final TypedArray a = context.obtainStyledAttributes(attrs,
     46                 com.android.internal.R.styleable.CheckBoxPreference, defStyleAttr, defStyleRes);
     47         setSummaryOn(a.getString(com.android.internal.R.styleable.CheckBoxPreference_summaryOn));
     48         setSummaryOff(a.getString(com.android.internal.R.styleable.CheckBoxPreference_summaryOff));
     49         setDisableDependentsState(a.getBoolean(
     50                 com.android.internal.R.styleable.CheckBoxPreference_disableDependentsState, false));
     51         a.recycle();
     52     }
     53 
     54     public CheckBoxPreference(Context context, AttributeSet attrs) {
     55         this(context, attrs, com.android.internal.R.attr.checkBoxPreferenceStyle);
     56     }
     57 
     58     public CheckBoxPreference(Context context) {
     59         this(context, null);
     60     }
     61 
     62     @Override
     63     protected void onBindView(View view) {
     64         super.onBindView(view);
     65 
     66         View checkboxView = view.findViewById(com.android.internal.R.id.checkbox);
     67         if (checkboxView != null && checkboxView instanceof Checkable) {
     68             ((Checkable) checkboxView).setChecked(mChecked);
     69         }
     70 
     71         syncSummaryView(view);
     72     }
     73 }
     74