如何修改CheckBoxPreference title字体

/*
 * 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 android.content.Context;
import android.graphics.Typeface;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

/**
 * A {@link Preference} that provides checkbox widget functionality.
 * <p>
 * This preference will store a boolean into the SharedPreferences.
 * 
 * @attr ref android.R.styleable#CheckBoxPreference_summaryOff
 * @attr ref android.R.styleable#CheckBoxPreference_summaryOn
 * @attr ref android.R.styleable#CheckBoxPreference_disableDependentsState
 */
public class CheckBoxPreferenceFontDefault extends CheckBoxPreference {
    public String DefaultFont = "/system/fonts/DroidSansFallback.ttf";
    
    public CheckBoxPreferenceFontDefault(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    public CheckBoxPreferenceFontDefault(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public CheckBoxPreferenceFontDefault(Context context) {
        super(context);
    }

    @Override
    protected View onCreateView(ViewGroup parent) {
        View view = super.onCreateView(parent);

        TextView titleView = (TextView) view.findViewById(com.android.internal.R.id.title);;
        Typeface tf = Typeface.createFromFile(DefaultFont);
        titleView.setTypeface(tf);

        return view;

    }
}

已上是代码，核心点就是重写onCreateView()函数。

因为只有TextView才可以修改字体，大小等。

参考文档：

关于createFromAsset

Android 自定义CheckBoxPreference的CheckBox复选框 

apply custom theme in android preference

Android中通过typeface设置字体

如何改变CheckBoxPreference组件中title和summary字体的大小