Android改變系統內建ProgressDialog的文字大小

package com.example.ttt;import android.app.Activity;import android.app.ProgressDialog;import android.os.Bundle;import android.view.Window;/** * Demo描述: * 改變系統內建ProgressDialog的文字大小 *  * 改變方式: * 為ProgressDialog設定一個style即可 * 參見styles.xml * */public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);//為此ProgressDialog指定styleProgressDialog dialog = new ProgressDialog(this,R.style.dialog);dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);dialog.setCanceledOnTouchOutside(false);dialog.setMessage("loading");dialog.setCancelable(false);dialog.show();}}

<resources xmlns:android="http://schemas.android.com/apk/res/android">       <style name="AppBaseTheme" parent="android:Theme.Light">           </style>      <style name="AppTheme" parent="AppBaseTheme">    </style>            <style name="dialog" parent="@android:style/Theme.Dialog">        <item name="android:windowFrame">@null</item>        <item name="android:windowIsFloating">true</item>        <item name="android:windowIsTranslucent">true</item>        <item name="android:windowNoTitle">true</item>        <item name="android:windowBackground">@android:color/transparent</item>        <item name="android:backgroundDimEnabled">true</item>        <item name="android:windowContentOverlay">@null</item>        <item name="android:textSize">25sp</item>    </style></resources>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    >    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/hello_world"         android:layout_centerHorizontal="true"     /></RelativeLayout>