Android example source code file (PreferenceCategory.java)

This example Android source code file (PreferenceCategory.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

android, attributeset, cannot, content, illegalargumentexception, override, preferencecategory, preferencegroup, string, tag, util, utilities, utils

The PreferenceCategory.java Android example source code

/*
 * Copyright (C) 2007 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 android.preference;

import java.util.Map;

import android.content.Context;
import android.util.AttributeSet;

/**
 * Used to group {@link Preference} objects
 * and provide a disabled title above the group.
 */
public class PreferenceCategory extends PreferenceGroup {
    private static final String TAG = "PreferenceCategory";
    
    public PreferenceCategory(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    public PreferenceCategory(Context context, AttributeSet attrs) {
        this(context, attrs, com.android.internal.R.attr.preferenceCategoryStyle);
    }

    public PreferenceCategory(Context context) {
        this(context, null);
    }
    
    @Override
    protected boolean onPrepareAddPreference(Preference preference) {
        if (preference instanceof PreferenceCategory) {
            throw new IllegalArgumentException(
                    "Cannot add a " + TAG + " directly to a " + TAG);
        }
        
        return super.onPrepareAddPreference(preference);
    }

    @Override
    public boolean isEnabled() {
        return false;
    }
    
}